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版本聲明：Activiti 5.22.0 通常，由模板發布流程的代碼大致如下：

private Deployment convertModelToProcess(String modelId) throws IOException, UnsupportedEncodingException {Deployment deployment = null;try {Model modelData = repositoryService.getModel(modelId);ObjectNode modelNode = (ObjectNode) new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));byte[] bpmnBytes = null;BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);bpmnBytes = new BpmnXMLConverter().convertToXML(model);String processName = modelData.getName() + ".bpmn20.xml";deployment = repositoryService.createDeployment().name(modelData.getName()).addString(processName, new String(bpmnBytes, "UTF-8")).deploy();} catch (Exception e1) {throw new BizException("流程定義文件存在錯誤，請修改后重新部署！");} return deployment;}

但在此版本的activiti中存在一個bug：由模板轉換的流程定義，其流程圖會丟失連線名稱。 解決辦法：重寫BpmnJsonConverter類：

import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map;import org.activiti.bpmn.model.Activity; import org.activiti.bpmn.model.Artifact; import org.activiti.bpmn.model.BaseElement; import org.activiti.bpmn.model.BoundaryEvent; import org.activiti.bpmn.model.BpmnModel; import org.activiti.bpmn.model.Event; import org.activiti.bpmn.model.EventDefinition; import org.activiti.bpmn.model.ExtensionElement; import org.activiti.bpmn.model.FlowElement; import org.activiti.bpmn.model.FlowElementsContainer; import org.activiti.bpmn.model.FlowNode; import org.activiti.bpmn.model.Gateway; import org.activiti.bpmn.model.GraphicInfo; import org.activiti.bpmn.model.Lane; import org.activiti.bpmn.model.Message; import org.activiti.bpmn.model.MessageEventDefinition; import org.activiti.bpmn.model.MessageFlow; import org.activiti.bpmn.model.Pool; import org.activiti.bpmn.model.Process; import org.activiti.bpmn.model.SequenceFlow; import org.activiti.bpmn.model.Signal; import org.activiti.bpmn.model.SignalEventDefinition; import org.activiti.bpmn.model.SubProcess; import org.activiti.bpmn.model.ValuedDataObject; import org.activiti.editor.constants.EditorJsonConstants; import org.activiti.editor.constants.StencilConstants; import org.activiti.editor.language.json.converter.ActivityProcessor; import org.activiti.editor.language.json.converter.AssociationJsonConverter; import org.activiti.editor.language.json.converter.BaseBpmnJsonConverter; import org.activiti.editor.language.json.converter.BoundaryEventJsonConverter; import org.activiti.editor.language.json.converter.BpmnJsonConverter; import org.activiti.editor.language.json.converter.BpmnJsonConverterUtil; import org.activiti.editor.language.json.converter.BusinessRuleTaskJsonConverter; import org.activiti.editor.language.json.converter.CallActivityJsonConverter; import org.activiti.editor.language.json.converter.CamelTaskJsonConverter; import org.activiti.editor.language.json.converter.CatchEventJsonConverter; import org.activiti.editor.language.json.converter.DataStoreJsonConverter; import org.activiti.editor.language.json.converter.EndEventJsonConverter; import org.activiti.editor.language.json.converter.EventGatewayJsonConverter; import org.activiti.editor.language.json.converter.EventSubProcessJsonConverter; import org.activiti.editor.language.json.converter.ExclusiveGatewayJsonConverter; import org.activiti.editor.language.json.converter.InclusiveGatewayJsonConverter; import org.activiti.editor.language.json.converter.MailTaskJsonConverter; import org.activiti.editor.language.json.converter.ManualTaskJsonConverter; import org.activiti.editor.language.json.converter.MessageFlowJsonConverter; import org.activiti.editor.language.json.converter.MuleTaskJsonConverter; import org.activiti.editor.language.json.converter.ParallelGatewayJsonConverter; import org.activiti.editor.language.json.converter.ReceiveTaskJsonConverter; import org.activiti.editor.language.json.converter.ScriptTaskJsonConverter; import org.activiti.editor.language.json.converter.SendTaskJsonConverter; import org.activiti.editor.language.json.converter.SequenceFlowJsonConverter; import org.activiti.editor.language.json.converter.ServiceTaskJsonConverter; import org.activiti.editor.language.json.converter.StartEventJsonConverter; import org.activiti.editor.language.json.converter.SubProcessJsonConverter; import org.activiti.editor.language.json.converter.TextAnnotationJsonConverter; import org.activiti.editor.language.json.converter.ThrowEventJsonConverter; import org.activiti.editor.language.json.converter.UserTaskJsonConverter; import org.activiti.editor.language.json.converter.util.JsonConverterUtil; import org.apache.commons.collections.CollectionUtils; import org.apache.commons.lang3.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory;import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ArrayNode; import com.fasterxml.jackson.databind.node.ObjectNode;import math.geom2d.Point2D; import math.geom2d.conic.Circle2D; import math.geom2d.curve.AbstractContinuousCurve2D; import math.geom2d.line.Line2D; import math.geom2d.polygon.Polyline2D;/*** @author Tijs Rademakers*/ public class CustomBpmnJsonConverter implements EditorJsonConstants,StencilConstants, ActivityProcessor {protected static final Logger LOGGER = LoggerFactory.getLogger(BpmnJsonConverter.class);protected static Map<Class<? extends BaseElement>, Class<? extends BaseBpmnJsonConverter>> convertersToJsonMap = new HashMap<Class<? extends BaseElement>, Class<? extends BaseBpmnJsonConverter>>();protected static Map<String, Class<? extends BaseBpmnJsonConverter>> convertersToBpmnMap = new HashMap<String, Class<? extends BaseBpmnJsonConverter>>();public static final String MODELER_NAMESPACE = "http://activiti.com/modeler";protected static final DateFormat defaultFormat = new SimpleDateFormat("yyyyMMddHHmmss");protected static final DateFormat entFormat = new SimpleDateFormat("yyyyMMddHHmmssSSS");static {// start and end eventsStartEventJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);EndEventJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// connectorsSequenceFlowJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);MessageFlowJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);AssociationJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// task typesBusinessRuleTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);MailTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);ManualTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);ReceiveTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);ScriptTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);ServiceTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);UserTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);CallActivityJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);CamelTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);MuleTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);SendTaskJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// gatewaysExclusiveGatewayJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);InclusiveGatewayJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);ParallelGatewayJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);EventGatewayJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// scope constructsSubProcessJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);EventSubProcessJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// catch eventsCatchEventJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// throw eventsThrowEventJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// boundary eventsBoundaryEventJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);// artifactsTextAnnotationJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);DataStoreJsonConverter.fillTypes(convertersToBpmnMap,convertersToJsonMap);}private static final List<String> DI_CIRCLES = new ArrayList<String>();private static final List<String> DI_RECTANGLES = new ArrayList<String>();private static final List<String> DI_GATEWAY = new ArrayList<String>();static {DI_CIRCLES.add(STENCIL_EVENT_START_ERROR);DI_CIRCLES.add(STENCIL_EVENT_START_MESSAGE);DI_CIRCLES.add(STENCIL_EVENT_START_NONE);DI_CIRCLES.add(STENCIL_EVENT_START_TIMER);DI_CIRCLES.add(STENCIL_EVENT_START_SIGNAL);DI_CIRCLES.add(STENCIL_EVENT_BOUNDARY_ERROR);DI_CIRCLES.add(STENCIL_EVENT_BOUNDARY_SIGNAL);DI_CIRCLES.add(STENCIL_EVENT_BOUNDARY_TIMER);DI_CIRCLES.add(STENCIL_EVENT_BOUNDARY_MESSAGE);DI_CIRCLES.add(STENCIL_EVENT_BOUNDARY_CANCEL);DI_CIRCLES.add(STENCIL_EVENT_BOUNDARY_COMPENSATION);DI_CIRCLES.add(STENCIL_EVENT_CATCH_MESSAGE);DI_CIRCLES.add(STENCIL_EVENT_CATCH_SIGNAL);DI_CIRCLES.add(STENCIL_EVENT_CATCH_TIMER);DI_CIRCLES.add(STENCIL_EVENT_THROW_NONE);DI_CIRCLES.add(STENCIL_EVENT_THROW_SIGNAL);DI_CIRCLES.add(STENCIL_EVENT_END_NONE);DI_CIRCLES.add(STENCIL_EVENT_END_ERROR);DI_CIRCLES.add(STENCIL_EVENT_END_CANCEL);DI_CIRCLES.add(STENCIL_EVENT_END_TERMINATE);DI_RECTANGLES.add(STENCIL_CALL_ACTIVITY);DI_RECTANGLES.add(STENCIL_SUB_PROCESS);DI_RECTANGLES.add(STENCIL_EVENT_SUB_PROCESS);DI_RECTANGLES.add(STENCIL_TASK_BUSINESS_RULE);DI_RECTANGLES.add(STENCIL_TASK_MAIL);DI_RECTANGLES.add(STENCIL_TASK_MANUAL);DI_RECTANGLES.add(STENCIL_TASK_RECEIVE);DI_RECTANGLES.add(STENCIL_TASK_SCRIPT);DI_RECTANGLES.add(STENCIL_TASK_SEND);DI_RECTANGLES.add(STENCIL_TASK_SERVICE);DI_RECTANGLES.add(STENCIL_TASK_USER);DI_RECTANGLES.add(STENCIL_TASK_CAMEL);DI_RECTANGLES.add(STENCIL_TASK_MULE);DI_RECTANGLES.add(STENCIL_TEXT_ANNOTATION);DI_GATEWAY.add(STENCIL_GATEWAY_EVENT);DI_GATEWAY.add(STENCIL_GATEWAY_EXCLUSIVE);DI_GATEWAY.add(STENCIL_GATEWAY_INCLUSIVE);DI_GATEWAY.add(STENCIL_GATEWAY_PARALLEL);}protected ObjectMapper objectMapper = new ObjectMapper();public ObjectNode convertToJson(BpmnModel model) {ObjectNode modelNode = objectMapper.createObjectNode();double maxX = 0.0;double maxY = 0.0;for (GraphicInfo flowInfo : model.getLocationMap().values()) {if ((flowInfo.getX() + flowInfo.getWidth()) > maxX) {maxX = flowInfo.getX() + flowInfo.getWidth();}if ((flowInfo.getY() + flowInfo.getHeight()) > maxY) {maxY = flowInfo.getY() + flowInfo.getHeight();}}maxX += 50;maxY += 50;if (maxX < 1485) {maxX = 1485;}if (maxY < 700) {maxY = 700;}modelNode.put("bounds",BpmnJsonConverterUtil.createBoundsNode(maxX, maxY, 0, 0));modelNode.put("resourceId", "canvas");ObjectNode stencilNode = objectMapper.createObjectNode();stencilNode.put("id", "BPMNDiagram");modelNode.put("stencil", stencilNode);ObjectNode stencilsetNode = objectMapper.createObjectNode();stencilsetNode.put("namespace", "http://b3mn.org/stencilset/bpmn2.0#");stencilsetNode.put("url", "../editor/stencilsets/bpmn2.0/bpmn2.0.json");modelNode.put("stencilset", stencilsetNode);ArrayNode shapesArrayNode = objectMapper.createArrayNode();Process mainProcess = null;if (model.getPools().size() > 0) {mainProcess = model.getProcess(model.getPools().get(0).getId());} else {mainProcess = model.getMainProcess();}ObjectNode propertiesNode = objectMapper.createObjectNode();if (StringUtils.isNotEmpty(mainProcess.getId())) {propertiesNode.put(PROPERTY_PROCESS_ID, mainProcess.getId());}if (StringUtils.isNotEmpty(mainProcess.getName())) {propertiesNode.put(PROPERTY_NAME, mainProcess.getName());}if (StringUtils.isNotEmpty(mainProcess.getDocumentation())) {propertiesNode.put(PROPERTY_DOCUMENTATION,mainProcess.getDocumentation());}if (mainProcess.isExecutable() == false) {propertiesNode.put(PROPERTY_PROCESS_EXECUTABLE, "No");}if (StringUtils.isNoneEmpty(model.getTargetNamespace())) {propertiesNode.put(PROPERTY_PROCESS_NAMESPACE,model.getTargetNamespace());}BpmnJsonConverterUtil.convertMessagesToJson(model.getMessages(),propertiesNode);BpmnJsonConverterUtil.convertListenersToJson(mainProcess.getExecutionListeners(), true, propertiesNode);BpmnJsonConverterUtil.convertEventListenersToJson(mainProcess.getEventListeners(), propertiesNode);BpmnJsonConverterUtil.convertSignalDefinitionsToJson(model,propertiesNode);BpmnJsonConverterUtil.convertMessagesToJson(model, propertiesNode);if (CollectionUtils.isNotEmpty(mainProcess.getDataObjects())) {BpmnJsonConverterUtil.convertDataPropertiesToJson(mainProcess.getDataObjects(), propertiesNode);}modelNode.put(EDITOR_SHAPE_PROPERTIES, propertiesNode);boolean poolHasDI = false;if (model.getPools().size() > 0) {for (Pool pool : model.getPools()) {GraphicInfo graphicInfo = model.getGraphicInfo(pool.getId());if (graphicInfo != null) {poolHasDI = true;break;}}}if ((model.getPools().size() > 0) && poolHasDI) {for (Pool pool : model.getPools()) {GraphicInfo graphicInfo = model.getGraphicInfo(pool.getId());if (graphicInfo == null) {continue;}ObjectNode poolNode = BpmnJsonConverterUtil.createChildShape(pool.getId(), STENCIL_POOL, graphicInfo.getX()+ graphicInfo.getWidth(), graphicInfo.getY()+ graphicInfo.getHeight(), graphicInfo.getX(),graphicInfo.getY());shapesArrayNode.add(poolNode);ObjectNode poolPropertiesNode = objectMapper.createObjectNode();poolPropertiesNode.put(PROPERTY_OVERRIDE_ID, pool.getId());poolPropertiesNode.put(PROPERTY_PROCESS_ID,pool.getProcessRef());if (pool.isExecutable() == false) {poolPropertiesNode.put(PROPERTY_PROCESS_EXECUTABLE,PROPERTY_VALUE_NO);}if (StringUtils.isNotEmpty(pool.getName())) {poolPropertiesNode.put(PROPERTY_NAME, pool.getName());}poolNode.put(EDITOR_SHAPE_PROPERTIES, poolPropertiesNode);ArrayNode laneShapesArrayNode = objectMapper.createArrayNode();poolNode.put(EDITOR_CHILD_SHAPES, laneShapesArrayNode);ArrayNode outgoingArrayNode = objectMapper.createArrayNode();poolNode.put("outgoing", outgoingArrayNode);Process process = model.getProcess(pool.getId());if (process != null) {Map<String, ArrayNode> laneMap = new HashMap<String, ArrayNode>();for (Lane lane : process.getLanes()) {GraphicInfo laneGraphicInfo = model.getGraphicInfo(lane.getId());if (laneGraphicInfo == null) {continue;}ObjectNode laneNode = BpmnJsonConverterUtil.createChildShape(lane.getId(), STENCIL_LANE,laneGraphicInfo.getX()+ laneGraphicInfo.getWidth(),laneGraphicInfo.getY()+ laneGraphicInfo.getHeight(),laneGraphicInfo.getX(),laneGraphicInfo.getY());laneShapesArrayNode.add(laneNode);ObjectNode lanePropertiesNode = objectMapper.createObjectNode();lanePropertiesNode.put(PROPERTY_OVERRIDE_ID,lane.getId());if (StringUtils.isNotEmpty(lane.getName())) {lanePropertiesNode.put(PROPERTY_NAME,lane.getName());}laneNode.put(EDITOR_SHAPE_PROPERTIES,lanePropertiesNode);ArrayNode elementShapesArrayNode = objectMapper.createArrayNode();laneNode.put(EDITOR_CHILD_SHAPES,elementShapesArrayNode);laneNode.put("outgoing", objectMapper.createArrayNode());laneMap.put(lane.getId(), elementShapesArrayNode);}for (FlowElement flowElement : process.getFlowElements()) {Lane laneForElement = null;GraphicInfo laneGraphicInfo = null;FlowElement lookForElement = null;if (flowElement instanceof SequenceFlow) {SequenceFlow sequenceFlow = (SequenceFlow) flowElement;lookForElement = model.getFlowElement(sequenceFlow.getSourceRef());} else {lookForElement = flowElement;}for (Lane lane : process.getLanes()) {if (lane.getFlowReferences().contains(lookForElement.getId())) {laneGraphicInfo = model.getGraphicInfo(lane.getId());if (laneGraphicInfo != null) {laneForElement = lane;}break;}}if (flowElement instanceof SequenceFlow|| (laneForElement != null)) {processFlowElement(flowElement, process, model,laneMap.get(laneForElement.getId()),laneGraphicInfo.getX(),laneGraphicInfo.getY());}}processArtifacts(process, model, shapesArrayNode, 0.0, 0.0);}for (MessageFlow messageFlow : model.getMessageFlows().values()) {if (messageFlow.getSourceRef().equals(pool.getId())) {outgoingArrayNode.add(BpmnJsonConverterUtil.createResourceNode(messageFlow.getId()));}}}processMessageFlows(model, shapesArrayNode);} else {processFlowElements(model.getMainProcess(), model, shapesArrayNode,0.0, 0.0);processMessageFlows(model, shapesArrayNode);}modelNode.put(EDITOR_CHILD_SHAPES, shapesArrayNode);return modelNode;}public void processFlowElements(FlowElementsContainer container,BpmnModel model, ArrayNode shapesArrayNode, double subProcessX,double subProcessY) {for (FlowElement flowElement : container.getFlowElements()) {processFlowElement(flowElement, container, model, shapesArrayNode,subProcessX, subProcessY);}processArtifacts(container, model, shapesArrayNode, subProcessX,subProcessY);}protected void processFlowElement(FlowElement flowElement,FlowElementsContainer container, BpmnModel model,ArrayNode shapesArrayNode, double containerX, double containerY) {Class<? extends BaseBpmnJsonConverter> converter = convertersToJsonMap.get(flowElement.getClass());if (converter != null) {try {converter.newInstance().convertToJson(flowElement, this, model,container, shapesArrayNode, containerX, containerY);} catch (Exception e) {LOGGER.error("Error converting {}", flowElement, e);}}}protected void processArtifacts(FlowElementsContainer container,BpmnModel model, ArrayNode shapesArrayNode, double containerX,double containerY) {for (Artifact artifact : container.getArtifacts()) {Class<? extends BaseBpmnJsonConverter> converter = convertersToJsonMap.get(artifact.getClass());if (converter != null) {try {converter.newInstance().convertToJson(artifact, this,model, container, shapesArrayNode, containerX,containerY);} catch (Exception e) {LOGGER.error("Error converting {}", artifact, e);}}}}protected void processMessageFlows(BpmnModel model,ArrayNode shapesArrayNode) {for (MessageFlow messageFlow : model.getMessageFlows().values()) {MessageFlowJsonConverter jsonConverter = new MessageFlowJsonConverter();jsonConverter.convertToJson(messageFlow, this, model, null,shapesArrayNode, 0.0, 0.0);}}public BpmnModel convertToBpmnModel(JsonNode modelNode) {BpmnModel bpmnModel = new BpmnModel();bpmnModel.setTargetNamespace("http://activiti.org/test");Map<String, JsonNode> shapeMap = new HashMap<String, JsonNode>();Map<String, JsonNode> sourceRefMap = new HashMap<String, JsonNode>();Map<String, JsonNode> edgeMap = new HashMap<String, JsonNode>();Map<String, List<JsonNode>> sourceAndTargetMap = new HashMap<String, List<JsonNode>>();readShapeDI(modelNode, 0, 0, shapeMap, sourceRefMap, bpmnModel);filterAllEdges(modelNode, edgeMap, sourceAndTargetMap, shapeMap,sourceRefMap);readEdgeDI(edgeMap, sourceAndTargetMap, bpmnModel);ArrayNode shapesArrayNode = (ArrayNode) modelNode.get(EDITOR_CHILD_SHAPES);if ((shapesArrayNode == null) || (shapesArrayNode.size() == 0)) {return bpmnModel;}boolean nonEmptyPoolFound = false;Map<String, Lane> elementInLaneMap = new HashMap<String, Lane>();// first create the pool structurefor (JsonNode shapeNode : shapesArrayNode) {String stencilId = BpmnJsonConverterUtil.getStencilId(shapeNode);if (STENCIL_POOL.equals(stencilId)) {Pool pool = new Pool();pool.setId(BpmnJsonConverterUtil.getElementId(shapeNode));pool.setName(JsonConverterUtil.getPropertyValueAsString(PROPERTY_NAME, shapeNode));pool.setProcessRef(JsonConverterUtil.getPropertyValueAsString(PROPERTY_PROCESS_ID, shapeNode));pool.setExecutable(JsonConverterUtil.getPropertyValueAsBoolean(PROPERTY_PROCESS_EXECUTABLE, shapeNode, true));bpmnModel.getPools().add(pool);Process process = new Process();process.setId(pool.getProcessRef());process.setName(pool.getName());process.setExecutable(pool.isExecutable());bpmnModel.addProcess(process);ArrayNode laneArrayNode = (ArrayNode) shapeNode.get(EDITOR_CHILD_SHAPES);for (JsonNode laneNode : laneArrayNode) {// should be a lane, but just check to be certainString laneStencilId = BpmnJsonConverterUtil.getStencilId(laneNode);if (STENCIL_LANE.equals(laneStencilId)) {nonEmptyPoolFound = true;Lane lane = new Lane();lane.setId(BpmnJsonConverterUtil.getElementId(laneNode));lane.setName(JsonConverterUtil.getPropertyValueAsString(PROPERTY_NAME,laneNode));lane.setParentProcess(process);process.getLanes().add(lane);processJsonElements(laneNode.get(EDITOR_CHILD_SHAPES),modelNode, lane, shapeMap, bpmnModel);if (CollectionUtils.isNotEmpty(lane.getFlowReferences())) {for (String elementRef : lane.getFlowReferences()) {elementInLaneMap.put(elementRef, lane);}}}}}}// Signal Definitions exist on the root levelJsonNode signalDefinitionNode = BpmnJsonConverterUtil.getProperty(PROPERTY_SIGNAL_DEFINITIONS, modelNode);signalDefinitionNode = BpmnJsonConverterUtil.validateIfNodeIsTextual(signalDefinitionNode);signalDefinitionNode = BpmnJsonConverterUtil.validateIfNodeIsTextual(signalDefinitionNode); // no idea why this needs to be done twice ..if (signalDefinitionNode != null) {if (signalDefinitionNode instanceof ArrayNode) {ArrayNode signalDefinitionArrayNode = (ArrayNode) signalDefinitionNode;Iterator<JsonNode> signalDefinitionIterator = signalDefinitionArrayNode.iterator();while (signalDefinitionIterator.hasNext()) {JsonNode signalDefinitionJsonNode = signalDefinitionIterator.next();String signalId = signalDefinitionJsonNode.get(PROPERTY_SIGNAL_DEFINITION_ID).asText();String signalName = signalDefinitionJsonNode.get(PROPERTY_SIGNAL_DEFINITION_NAME).asText();String signalScope = signalDefinitionJsonNode.get(PROPERTY_SIGNAL_DEFINITION_SCOPE).asText();Signal signal = new Signal();signal.setId(signalId);signal.setName(signalName);signal.setScope((signalScope.toLowerCase().equals("processinstance")) ? Signal.SCOPE_PROCESS_INSTANCE: Signal.SCOPE_GLOBAL);bpmnModel.addSignal(signal);}}}if (nonEmptyPoolFound == false) {Process process = new Process();bpmnModel.getProcesses().add(process);process.setId(BpmnJsonConverterUtil.getPropertyValueAsString(PROPERTY_PROCESS_ID, modelNode));process.setName(BpmnJsonConverterUtil.getPropertyValueAsString(PROPERTY_NAME, modelNode));String namespace = BpmnJsonConverterUtil.getPropertyValueAsString(PROPERTY_PROCESS_NAMESPACE, modelNode);if (StringUtils.isNotEmpty(namespace)) {bpmnModel.setTargetNamespace(namespace);}process.setDocumentation(BpmnJsonConverterUtil.getPropertyValueAsString(PROPERTY_DOCUMENTATION, modelNode));JsonNode processExecutableNode = JsonConverterUtil.getProperty(PROPERTY_PROCESS_EXECUTABLE, modelNode);if ((processExecutableNode != null)&& StringUtils.isNotEmpty(processExecutableNode.asText())) {process.setExecutable(JsonConverterUtil.getPropertyValueAsBoolean(PROPERTY_PROCESS_EXECUTABLE,modelNode));}BpmnJsonConverterUtil.convertJsonToMessages(modelNode, bpmnModel);BpmnJsonConverterUtil.convertJsonToListeners(modelNode, process);JsonNode eventListenersNode = BpmnJsonConverterUtil.getProperty(PROPERTY_EVENT_LISTENERS, modelNode);if (eventListenersNode != null) {eventListenersNode = BpmnJsonConverterUtil.validateIfNodeIsTextual(eventListenersNode);BpmnJsonConverterUtil.parseEventListeners(eventListenersNode.get(PROPERTY_EVENTLISTENER_VALUE),process);}JsonNode processDataPropertiesNode = modelNode.get(EDITOR_SHAPE_PROPERTIES).get(PROPERTY_DATA_PROPERTIES);if (processDataPropertiesNode != null) {List<ValuedDataObject> dataObjects = BpmnJsonConverterUtil.convertJsonToDataProperties(processDataPropertiesNode,process);process.setDataObjects(dataObjects);process.getFlowElements().addAll(dataObjects);}processJsonElements(shapesArrayNode, modelNode, process, shapeMap,bpmnModel);} else {// sequence flows are on root level so need additional parsing for poolsfor (JsonNode shapeNode : shapesArrayNode) {if (STENCIL_SEQUENCE_FLOW.equalsIgnoreCase(BpmnJsonConverterUtil.getStencilId(shapeNode))|| STENCIL_ASSOCIATION.equalsIgnoreCase(BpmnJsonConverterUtil.getStencilId(shapeNode))) {String sourceRef = BpmnJsonConverterUtil.lookForSourceRef(shapeNode.get(EDITOR_SHAPE_ID).asText(),modelNode.get(EDITOR_CHILD_SHAPES));if (sourceRef != null) {Lane lane = elementInLaneMap.get(sourceRef);SequenceFlowJsonConverter flowConverter = new SequenceFlowJsonConverter();if (lane != null) {flowConverter.convertToBpmnModel(shapeNode,modelNode, this, lane, shapeMap, bpmnModel);} else {flowConverter.convertToBpmnModel(shapeNode,modelNode, this, bpmnModel.getProcesses().get(0), shapeMap, bpmnModel);}}}}}// sequence flows are now all on root levelMap<String, SubProcess> subShapesMap = new HashMap<String, SubProcess>();for (Process process : bpmnModel.getProcesses()) {for (FlowElement flowElement : process.findFlowElementsOfType(SubProcess.class)) {SubProcess subProcess = (SubProcess) flowElement;fillSubShapes(subShapesMap, subProcess);}if (subShapesMap.size() > 0) {List<String> removeSubFlowsList = new ArrayList<String>();for (FlowElement flowElement : process.findFlowElementsOfType(SequenceFlow.class)) {SequenceFlow sequenceFlow = (SequenceFlow) flowElement;if (subShapesMap.containsKey(sequenceFlow.getSourceRef())) {SubProcess subProcess = subShapesMap.get(sequenceFlow.getSourceRef());if (subProcess.getFlowElement(sequenceFlow.getId()) == null) {subProcess.addFlowElement(sequenceFlow);removeSubFlowsList.add(sequenceFlow.getId());}}}for (String flowId : removeSubFlowsList) {process.removeFlowElement(flowId);}}}Map<String, FlowWithContainer> allFlowMap = new HashMap<String, FlowWithContainer>();List<Gateway> gatewayWithOrderList = new ArrayList<Gateway>();// post handling of process elementsfor (Process process : bpmnModel.getProcesses()) {postProcessElements(process, process.getFlowElements(), edgeMap,bpmnModel, allFlowMap, gatewayWithOrderList);}// sort the sequence flowsfor (Gateway gateway : gatewayWithOrderList) {List<ExtensionElement> orderList = gateway.getExtensionElements().get("EDITOR_FLOW_ORDER");if (CollectionUtils.isNotEmpty(orderList)) {for (ExtensionElement orderElement : orderList) {String flowValue = orderElement.getElementText();if (StringUtils.isNotEmpty(flowValue)) {if (allFlowMap.containsKey(flowValue)) {FlowWithContainer flowWithContainer = allFlowMap.get(flowValue);flowWithContainer.getFlowContainer().removeFlowElement(flowWithContainer.getSequenceFlow().getId());flowWithContainer.getFlowContainer().addFlowElement(flowWithContainer.getSequenceFlow());}}}}gateway.getExtensionElements().remove("EDITOR_FLOW_ORDER");}return bpmnModel;}public void processJsonElements(JsonNode shapesArrayNode,JsonNode modelNode, BaseElement parentElement,Map<String, JsonNode> shapeMap, BpmnModel bpmnModel) {for (JsonNode shapeNode : shapesArrayNode) {String stencilId = BpmnJsonConverterUtil.getStencilId(shapeNode);Class<? extends BaseBpmnJsonConverter> converter = convertersToBpmnMap.get(stencilId);try {BaseBpmnJsonConverter converterInstance = converter.newInstance();converterInstance.convertToBpmnModel(shapeNode, modelNode,this, parentElement, shapeMap, bpmnModel);} catch (Exception e) {LOGGER.error("Error converting {}",BpmnJsonConverterUtil.getStencilId(shapeNode), e);}}}private void fillSubShapes(Map<String, SubProcess> subShapesMap,SubProcess subProcess) {for (FlowElement flowElement : subProcess.getFlowElements()) {if (flowElement instanceof SubProcess) {SubProcess childSubProcess = (SubProcess) flowElement;subShapesMap.put(childSubProcess.getId(), subProcess);fillSubShapes(subShapesMap, childSubProcess);} else {subShapesMap.put(flowElement.getId(), subProcess);}}}private void postProcessElements(FlowElementsContainer parentContainer,Collection<FlowElement> flowElementList,Map<String, JsonNode> edgeMap, BpmnModel bpmnModel,Map<String, FlowWithContainer> allFlowMap,List<Gateway> gatewayWithOrderList) {for (FlowElement flowElement : flowElementList) {if (flowElement instanceof Event) {Event event = (Event) flowElement;if (CollectionUtils.isNotEmpty(event.getEventDefinitions())) {EventDefinition eventDef = event.getEventDefinitions().get(0);if (eventDef instanceof SignalEventDefinition) {SignalEventDefinition signalEventDef = (SignalEventDefinition) eventDef;if (StringUtils.isNotEmpty(signalEventDef.getSignalRef())) {if (bpmnModel.getSignal(signalEventDef.getSignalRef()) == null) {bpmnModel.addSignal(new Signal(signalEventDef.getSignalRef(), signalEventDef.getSignalRef()));}}} else if (eventDef instanceof MessageEventDefinition) {MessageEventDefinition messageEventDef = (MessageEventDefinition) eventDef;if (StringUtils.isNotEmpty(messageEventDef.getMessageRef())) {if (bpmnModel.getMessage(messageEventDef.getMessageRef()) == null) {bpmnModel.addMessage(new Message(messageEventDef.getMessageRef(),messageEventDef.getMessageRef(), null));}}}}}if (flowElement instanceof BoundaryEvent) {BoundaryEvent boundaryEvent = (BoundaryEvent) flowElement;Activity activity = retrieveAttachedRefObject(boundaryEvent.getAttachedToRefId(),parentContainer.getFlowElements());if (activity == null) {LOGGER.warn("Boundary event " + boundaryEvent.getId()+ " is not attached to any activity");} else {boundaryEvent.setAttachedToRef(activity);activity.getBoundaryEvents().add(boundaryEvent);}} else if (flowElement instanceof Gateway) {if (flowElement.getExtensionElements().containsKey("EDITOR_FLOW_ORDER")) {gatewayWithOrderList.add((Gateway) flowElement);}} else if (flowElement instanceof SubProcess) {SubProcess subProcess = (SubProcess) flowElement;postProcessElements(subProcess, subProcess.getFlowElements(),edgeMap, bpmnModel, allFlowMap, gatewayWithOrderList);} else if (flowElement instanceof SequenceFlow) {SequenceFlow sequenceFlow = (SequenceFlow) flowElement;FlowElement sourceFlowElement = parentContainer.getFlowElement(sequenceFlow.getSourceRef());if ((sourceFlowElement != null)&& sourceFlowElement instanceof FlowNode) {FlowWithContainer flowWithContainer = new FlowWithContainer(sequenceFlow, parentContainer);if ((sequenceFlow.getExtensionElements().get("EDITOR_RESOURCEID") != null)&& (sequenceFlow.getExtensionElements().get("EDITOR_RESOURCEID").size() > 0)) {allFlowMap.put(sequenceFlow.getExtensionElements().get("EDITOR_RESOURCEID").get(0).getElementText(), flowWithContainer);sequenceFlow.getExtensionElements().remove("EDITOR_RESOURCEID");}((FlowNode) sourceFlowElement).getOutgoingFlows().add(sequenceFlow);JsonNode edgeNode = edgeMap.get(sequenceFlow.getId());if (edgeNode != null) {boolean isDefault = JsonConverterUtil.getPropertyValueAsBoolean("defaultflow",edgeNode);if (isDefault) {if (sourceFlowElement instanceof Activity) {((Activity) sourceFlowElement).setDefaultFlow(sequenceFlow.getId());} else if (sourceFlowElement instanceof Gateway) {((Gateway) sourceFlowElement).setDefaultFlow(sequenceFlow.getId());}}}}FlowElement targetFlowElement = parentContainer.getFlowElement(sequenceFlow.getTargetRef());if ((targetFlowElement != null)&& targetFlowElement instanceof FlowNode) {((FlowNode) targetFlowElement).getIncomingFlows().add(sequenceFlow);}}}}private Activity retrieveAttachedRefObject(String attachedToRefId,Collection<FlowElement> flowElementList) {Activity activity = null;if (StringUtils.isNotEmpty(attachedToRefId)) {for (FlowElement flowElement : flowElementList) {if (attachedToRefId.equals(flowElement.getId())) {activity = (Activity) flowElement;break;} else if (flowElement instanceof SubProcess) {SubProcess subProcess = (SubProcess) flowElement;Activity retrievedActivity = retrieveAttachedRefObject(attachedToRefId, subProcess.getFlowElements());if (retrievedActivity != null) {activity = retrievedActivity;break;}}}}return activity;}private void readShapeDI(JsonNode objectNode, double parentX,double parentY, Map<String, JsonNode> shapeMap,Map<String, JsonNode> sourceRefMap, BpmnModel bpmnModel) {if (objectNode.get(EDITOR_CHILD_SHAPES) != null) {for (JsonNode jsonChildNode : objectNode.get(EDITOR_CHILD_SHAPES)) {String stencilId = BpmnJsonConverterUtil.getStencilId(jsonChildNode);if (STENCIL_SEQUENCE_FLOW.equals(stencilId) == false) {GraphicInfo graphicInfo = new GraphicInfo();JsonNode boundsNode = jsonChildNode.get(EDITOR_BOUNDS);ObjectNode upperLeftNode = (ObjectNode) boundsNode.get(EDITOR_BOUNDS_UPPER_LEFT);graphicInfo.setX(upperLeftNode.get(EDITOR_BOUNDS_X).asDouble() + parentX);graphicInfo.setY(upperLeftNode.get(EDITOR_BOUNDS_Y).asDouble() + parentY);ObjectNode lowerRightNode = (ObjectNode) boundsNode.get(EDITOR_BOUNDS_LOWER_RIGHT);graphicInfo.setWidth(lowerRightNode.get(EDITOR_BOUNDS_X).asDouble() - graphicInfo.getX() + parentX);graphicInfo.setHeight(lowerRightNode.get(EDITOR_BOUNDS_Y).asDouble() - graphicInfo.getY() + parentY);String childShapeId = jsonChildNode.get(EDITOR_SHAPE_ID).asText();bpmnModel.addGraphicInfo(BpmnJsonConverterUtil.getElementId(jsonChildNode),graphicInfo);shapeMap.put(childShapeId, jsonChildNode);ArrayNode outgoingNode = (ArrayNode) jsonChildNode.get("outgoing");if ((outgoingNode != null) && (outgoingNode.size() > 0)) {for (JsonNode outgoingChildNode : outgoingNode) {JsonNode resourceNode = outgoingChildNode.get(EDITOR_SHAPE_ID);if (resourceNode != null) {sourceRefMap.put(resourceNode.asText(),jsonChildNode);}}}readShapeDI(jsonChildNode, graphicInfo.getX(),graphicInfo.getY(), shapeMap, sourceRefMap,bpmnModel);}}}}private void filterAllEdges(JsonNode objectNode,Map<String, JsonNode> edgeMap,Map<String, List<JsonNode>> sourceAndTargetMap,Map<String, JsonNode> shapeMap, Map<String, JsonNode> sourceRefMap) {if (objectNode.get(EDITOR_CHILD_SHAPES) != null) {for (JsonNode jsonChildNode : objectNode.get(EDITOR_CHILD_SHAPES)) {ObjectNode childNode = (ObjectNode) jsonChildNode;String stencilId = BpmnJsonConverterUtil.getStencilId(childNode);if (STENCIL_SUB_PROCESS.equals(stencilId)) {filterAllEdges(childNode, edgeMap, sourceAndTargetMap,shapeMap, sourceRefMap);} else if (STENCIL_SEQUENCE_FLOW.equals(stencilId)|| STENCIL_ASSOCIATION.equals(stencilId)) {String childEdgeId = BpmnJsonConverterUtil.getElementId(childNode);JsonNode targetNode = childNode.get("target");if ((targetNode != null) && (targetNode.isNull() == false)) {String targetRefId = targetNode.get(EDITOR_SHAPE_ID).asText();List<JsonNode> sourceAndTargetList = new ArrayList<JsonNode>();sourceAndTargetList.add(sourceRefMap.get(childNode.get(EDITOR_SHAPE_ID).asText()));sourceAndTargetList.add(shapeMap.get(targetRefId));sourceAndTargetMap.put(childEdgeId, sourceAndTargetList);}edgeMap.put(childEdgeId, childNode);}}}}private void readEdgeDI(Map<String, JsonNode> edgeMap,Map<String, List<JsonNode>> sourceAndTargetMap, BpmnModel bpmnModel) {for (String edgeId : edgeMap.keySet()) {JsonNode edgeNode = edgeMap.get(edgeId);List<JsonNode> sourceAndTargetList = sourceAndTargetMap.get(edgeId);JsonNode sourceRefNode = null;JsonNode targetRefNode = null;if ((sourceAndTargetList != null)&& (sourceAndTargetList.size() > 1)) {sourceRefNode = sourceAndTargetList.get(0);targetRefNode = sourceAndTargetList.get(1);}if (sourceRefNode == null) {LOGGER.info("Skipping edge {} because source ref is null",edgeId);continue;}if (targetRefNode == null) {LOGGER.info("Skipping edge {} because target ref is null",edgeId);continue;}JsonNode dockersNode = edgeNode.get(EDITOR_DOCKERS);double sourceDockersX = dockersNode.get(0).get(EDITOR_BOUNDS_X).asDouble();double sourceDockersY = dockersNode.get(0).get(EDITOR_BOUNDS_Y).asDouble();GraphicInfo sourceInfo = bpmnModel.getGraphicInfo(BpmnJsonConverterUtil.getElementId(sourceRefNode));GraphicInfo targetInfo = bpmnModel.getGraphicInfo(BpmnJsonConverterUtil.getElementId(targetRefNode));double sourceRefLineX = sourceInfo.getX() + sourceDockersX;double sourceRefLineY = sourceInfo.getY() + sourceDockersY;double nextPointInLineX;double nextPointInLineY;nextPointInLineX = dockersNode.get(1).get(EDITOR_BOUNDS_X).asDouble();nextPointInLineY = dockersNode.get(1).get(EDITOR_BOUNDS_Y).asDouble();if (dockersNode.size() == 2) {nextPointInLineX += targetInfo.getX();nextPointInLineY += targetInfo.getY();}Line2D firstLine = new Line2D(sourceRefLineX, sourceRefLineY,nextPointInLineX, nextPointInLineY);String sourceRefStencilId = BpmnJsonConverterUtil.getStencilId(sourceRefNode);String targetRefStencilId = BpmnJsonConverterUtil.getStencilId(targetRefNode);List<GraphicInfo> graphicInfoList = new ArrayList<GraphicInfo>();AbstractContinuousCurve2D source2D = null;if (DI_CIRCLES.contains(sourceRefStencilId)) {source2D = new Circle2D(sourceInfo.getX() + sourceDockersX,sourceInfo.getY() + sourceDockersY, sourceDockersX);} else if (DI_RECTANGLES.contains(sourceRefStencilId)) {source2D = createRectangle(sourceInfo);} else if (DI_GATEWAY.contains(sourceRefStencilId)) {source2D = createGateway(sourceInfo);}if (source2D != null) {Collection<Point2D> intersections = source2D.intersections(firstLine);if ((intersections != null) && (intersections.size() > 0)) {Point2D intersection = intersections.iterator().next();graphicInfoList.add(createGraphicInfo(intersection.x(),intersection.y()));} else {graphicInfoList.add(createGraphicInfo(sourceRefLineX,sourceRefLineY));}}Line2D lastLine = null;if (dockersNode.size() > 2) {for (int i = 1; i < (dockersNode.size() - 1); i++) {double x = dockersNode.get(i).get(EDITOR_BOUNDS_X).asDouble();double y = dockersNode.get(i).get(EDITOR_BOUNDS_Y).asDouble();graphicInfoList.add(createGraphicInfo(x, y));}double startLastLineX = dockersNode.get(dockersNode.size() - 2).get(EDITOR_BOUNDS_X).asDouble();double startLastLineY = dockersNode.get(dockersNode.size() - 2).get(EDITOR_BOUNDS_Y).asDouble();double endLastLineX = dockersNode.get(dockersNode.size() - 1).get(EDITOR_BOUNDS_X).asDouble();double endLastLineY = dockersNode.get(dockersNode.size() - 1).get(EDITOR_BOUNDS_Y).asDouble();endLastLineX += targetInfo.getX();endLastLineY += targetInfo.getY();lastLine = new Line2D(startLastLineX, startLastLineY,endLastLineX, endLastLineY);} else {lastLine = firstLine;}AbstractContinuousCurve2D target2D = null;if (DI_RECTANGLES.contains(targetRefStencilId)) {target2D = createRectangle(targetInfo);} else if (DI_CIRCLES.contains(targetRefStencilId)) {double targetDockersX = dockersNode.get(dockersNode.size() - 1).get(EDITOR_BOUNDS_X).asDouble();double targetDockersY = dockersNode.get(dockersNode.size() - 1).get(EDITOR_BOUNDS_Y).asDouble();target2D = new Circle2D(targetInfo.getX() + targetDockersX,targetInfo.getY() + targetDockersY, targetDockersX);} else if (DI_GATEWAY.contains(targetRefStencilId)) {target2D = createGateway(targetInfo);}if (target2D != null) {Collection<Point2D> intersections = target2D.intersections(lastLine);if ((intersections != null) && (intersections.size() > 0)) {Point2D intersection = intersections.iterator().next();graphicInfoList.add(createGraphicInfo(intersection.x(),intersection.y()));} else {graphicInfoList.add(createGraphicInfo(lastLine.getPoint2().x(), lastLine.getPoint2().y()));}}bpmnModel.addFlowGraphicInfoList(edgeId, graphicInfoList);// if sequence has a name, just add a label graphic infoif (!"".equals(edgeNode.get("properties").get("name"))) {bpmnModel.addLabelGraphicInfo(edgeId,createGraphicInfo(graphicInfoList.get(0).getX(),graphicInfoList.get(0).getY()));}}}private Polyline2D createRectangle(GraphicInfo graphicInfo) {Polyline2D rectangle = new Polyline2D(new Point2D(graphicInfo.getX(),graphicInfo.getY()), new Point2D(graphicInfo.getX()+ graphicInfo.getWidth(), graphicInfo.getY()), new Point2D(graphicInfo.getX() + graphicInfo.getWidth(), graphicInfo.getY()+ graphicInfo.getHeight()), new Point2D(graphicInfo.getX(), graphicInfo.getY()+ graphicInfo.getHeight()), new Point2D(graphicInfo.getX(), graphicInfo.getY()));return rectangle;}private Polyline2D createGateway(GraphicInfo graphicInfo) {double middleX = graphicInfo.getX() + (graphicInfo.getWidth() / 2);double middleY = graphicInfo.getY() + (graphicInfo.getHeight() / 2);Polyline2D gatewayRectangle = new Polyline2D(new Point2D(graphicInfo.getX(), middleY), new Point2D(middleX,graphicInfo.getY()), new Point2D(graphicInfo.getX()+ graphicInfo.getWidth(), middleY), new Point2D(middleX,graphicInfo.getY() + graphicInfo.getHeight()), new Point2D(graphicInfo.getX(), middleY));return gatewayRectangle;}private GraphicInfo createGraphicInfo(double x, double y) {GraphicInfo graphicInfo = new GraphicInfo();graphicInfo.setX(x);graphicInfo.setY(y);return graphicInfo;}class FlowWithContainer {protected SequenceFlow sequenceFlow;protected FlowElementsContainer flowContainer;public FlowWithContainer(SequenceFlow sequenceFlow,FlowElementsContainer flowContainer) {this.sequenceFlow = sequenceFlow;this.flowContainer = flowContainer;}public SequenceFlow getSequenceFlow() {return sequenceFlow;}public void setSequenceFlow(SequenceFlow sequenceFlow) {this.sequenceFlow = sequenceFlow;}public FlowElementsContainer getFlowContainer() {return flowContainer;}public void setFlowContainer(FlowElementsContainer flowContainer) {this.flowContainer = flowContainer;}} }

重新轉換模板再查看流程圖進行驗證。 注：這樣解決雖然能顯示連線名稱了，但是會出現連線名稱顯示位置不準確的問題。解決辦法：重寫DefaultProcessDiagramGenerator類的generateProcessDiagram方法：

public CustomProcessDiagramCanvas generateProcessDiagram(BpmnModel bpmnModel, String imageType,List<String> highLightedActivities, List<String> highLightedFlows, String activityFontName,String labelFontName, String annotationFontName, ClassLoader customClassLoader, double scaleFactor,Color [] colors) {prepareBpmnModel(bpmnModel);CustomProcessDiagramCanvas processDiagramCanvas = initProcessDiagramCanvas(bpmnModel, imageType, activityFontName, labelFontName, annotationFontName, customClassLoader);// Draw pool shape, if process is participant in collaborationfor (Pool pool : bpmnModel.getPools()) {GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(pool.getId());processDiagramCanvas.drawPoolOrLane(pool.getName(), graphicInfo);}// Draw lanesfor (Process process : bpmnModel.getProcesses()) {for (Lane lane : process.getLanes()) {GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(lane.getId());processDiagramCanvas.drawPoolOrLane(lane.getName(), graphicInfo);}}// Draw activities and their sequence-flowsfor (Process process: bpmnModel.getProcesses()) {List<FlowNode> flowNodeList= process.findFlowElementsOfType(FlowNode.class);for (FlowNode flowNode : flowNodeList) {drawActivity(processDiagramCanvas, bpmnModel, flowNode, highLightedActivities, highLightedFlows, scaleFactor, colors);}}// Draw artifactsfor (Process process : bpmnModel.getProcesses()) {for (Artifact artifact : process.getArtifacts()) {drawArtifact(processDiagramCanvas, bpmnModel, artifact);}List<SubProcess> subProcesses = process.findFlowElementsOfType(SubProcess.class, true);if (subProcesses != null) {for (SubProcess subProcess : subProcesses) {for (Artifact subProcessArtifact : subProcess.getArtifacts()) {drawArtifact(processDiagramCanvas, bpmnModel, subProcessArtifact);}}}}return processDiagramCanvas;}protected void drawActivity(CustomProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode,List<String> highLightedActivities, List<String> highLightedFlows, double scaleFactor, Color[] colors) {ActivityDrawInstruction drawInstruction = activityDrawInstructions.get(flowNode.getClass());if (drawInstruction != null) {drawInstruction.draw(processDiagramCanvas, bpmnModel, flowNode);// Gather info on the multi instance markerboolean multiInstanceSequential = false, multiInstanceParallel = false, collapsed = false;if (flowNode instanceof Activity) {Activity activity = (Activity) flowNode;MultiInstanceLoopCharacteristics multiInstanceLoopCharacteristics = activity.getLoopCharacteristics();if (multiInstanceLoopCharacteristics != null) {multiInstanceSequential = multiInstanceLoopCharacteristics.isSequential();multiInstanceParallel = !multiInstanceSequential;}}// Gather info on the collapsed markerGraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId()); if (flowNode instanceof SubProcess) {collapsed = graphicInfo.getExpanded() != null && !graphicInfo.getExpanded();} else if (flowNode instanceof CallActivity) {collapsed = true;}if (scaleFactor == 1.0) {// Actually draw the markersprocessDiagramCanvas.drawActivityMarkers((int) graphicInfo.getX(), (int) graphicInfo.getY(),(int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), multiInstanceSequential, multiInstanceParallel, collapsed);}// Draw highlighted activitiesif (highLightedActivities.contains(flowNode.getId())) {if(flowNode.getId().equals(highLightedActivities.get(highLightedActivities.size()-1))&& !(flowNode instanceof EndEvent)) {//非結束節點，并且是當前節點 drawHighLight((flowNode instanceof StartEvent), processDiagramCanvas, bpmnModel.getGraphicInfo(flowNode.getId()), colors[1]); }else {//普通節點drawHighLight((flowNode instanceof StartEvent)||(flowNode instanceof EndEvent),processDiagramCanvas, bpmnModel.getGraphicInfo(flowNode.getId()), colors[0]);} }}// Outgoing transitions of activityfor (SequenceFlow sequenceFlow : flowNode.getOutgoingFlows()) {boolean highLighted = (highLightedFlows.contains(sequenceFlow.getId()));String defaultFlow = null;if (flowNode instanceof Activity) {defaultFlow = ((Activity) flowNode).getDefaultFlow();} else if (flowNode instanceof Gateway) {defaultFlow = ((Gateway) flowNode).getDefaultFlow();}boolean isDefault = false;if (defaultFlow != null && defaultFlow.equalsIgnoreCase(sequenceFlow.getId())) {isDefault = true;} // boolean drawConditionalIndicator = sequenceFlow.getConditionExpression() != null && !(flowNode instanceof Gateway);String sourceRef = sequenceFlow.getSourceRef();String targetRef = sequenceFlow.getTargetRef();FlowElement sourceElement = bpmnModel.getFlowElement(sourceRef);FlowElement targetElement = bpmnModel.getFlowElement(targetRef);List<GraphicInfo> graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(sequenceFlow.getId());if (graphicInfoList != null && graphicInfoList.size() > 0) {graphicInfoList = connectionPerfectionizer(processDiagramCanvas, bpmnModel, sourceElement, targetElement, graphicInfoList);int xPoints[]= new int[graphicInfoList.size()];int yPoints[]= new int[graphicInfoList.size()];for (int i=1; i<graphicInfoList.size(); i++) {GraphicInfo graphicInfo = graphicInfoList.get(i);GraphicInfo previousGraphicInfo = graphicInfoList.get(i-1);if (i == 1) {xPoints[0] = (int) previousGraphicInfo.getX();yPoints[0] = (int) previousGraphicInfo.getY();}xPoints[i] = (int) graphicInfo.getX();yPoints[i] = (int) graphicInfo.getY();}//畫高亮線processDiagramCanvas.drawSequenceflow(xPoints, yPoints, false, isDefault, highLighted, scaleFactor, colors[0]);// Draw sequenceflow label // GraphicInfo labelGraphicInfo = bpmnModel.getLabelGraphicInfo(sequenceFlow.getId()); // if (labelGraphicInfo != null) { // processDiagramCanvas.drawLabel(sequenceFlow.getName(), labelGraphicInfo, false); // }else {//解決流程圖連線名稱不顯示的BUGGraphicInfo lineCenter = getLineCenter(graphicInfoList);processDiagramCanvas.drawLabel(highLighted, sequenceFlow.getName(), lineCenter, Math.abs(xPoints[1]-xPoints[0]) >= 5); // }}}

重點修改之處在注釋的幾行代碼上，請讀者自己查看思考。

轉載于:https://my.oschina.net/u/180480/blog/2248964

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