JAVA IDEA集成geotools gt-mif gdal讀取.MIF

• • 1. 結論
  • 2. 問題1：gdal maven下載不下來
  • 3. geotools，gt-mif maven配置
  • 4. 源碼
  • 5. 運行結果

1. 結論

gdal maven可以下載下來，讀取MIF報錯；

geotools與gt-mif可以成功讀取mif，源碼下方；

2. 問題1：gdal maven下載不下來

解決： 配置maven repositories

 <dependencies><dependency><groupId>org.gdal</groupId><artifactId>gdal</artifactId><version>1.11.2</version></dependency>
</dependencies>
<repositories><repository><id>osgeo</id><name>OSGeo Release Repository</name><url>https://repo.osgeo.org/repository/release/</url><snapshots><enabled>false</enabled></snapshots><releases><enabled>true</enabled><!--不加如下updatePolicy會報錯：resolution will not be reattempted until the update interval of XXX has elapsed or updates are force--><updatePolicy>always</updatePolicy></releases></repository><repository><id>maven2-repository.dev.java.net</id><name>Java.net repository</name><url>http://download.java.net/maven/2</url></repository><repository><snapshots><enabled>true</enabled></snapshots><id>boundless</id><name>Boundless Maven Repository</name><url>http://repo.boundlessgeo.com/main</url></repository><!--   <repository><id>osgeo</id><name>Open Source Geospatial Foundation Repository</name><url>http://download.osgeo.org/webdav/geotools/</url></repository>-->
</repositories>

3. geotools，gt-mif maven配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.test.mif</groupId><artifactId>mif2json</artifactId><version>1.0-SNAPSHOT</version><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-shade-plugin</artifactId><version>2.3</version><executions><execution><phase>package</phase><goals><goal>shade</goal></goals></execution></executions></plugin></plugins></build><properties><gt-main.version>22.0</gt-main.version><gt-mif.version>2.5.5</gt-mif.version><jts.version>1.13</jts.version><spring.version>4.3.14.RELEASE</spring.version></properties><dependencies><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.75</version></dependency><dependency><groupId>com.vividsolutions</groupId><artifactId>jts</artifactId><version>${jts.version}</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency><dependency><groupId>org.geotools</groupId><artifactId>gt-main</artifactId><version>22-RC</version></dependency><dependency><groupId>org.geotools</groupId><artifactId>gt-mif</artifactId><version>2.5.5</version></dependency></dependencies><repositories><repository><id>osgeo</id><name>OSGeo Release Repository</name><url>https://repo.osgeo.org/repository/release/</url><snapshots><enabled>false</enabled></snapshots><releases><enabled>true</enabled><!--不加如下updatePolicy會報錯：resolution will not be reattempted until the update interval of XXX has elapsed or updates are force--><updatePolicy>always</updatePolicy></releases></repository></repositories>
</project>

4. 源碼

package com.mif2json.utils;import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;
import org.apache.commons.io.FileUtils;
import org.geotools.data.FeatureReader;
import org.geotools.data.mif.MIFFile;
import org.opengis.feature.Feature;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;import java.io.*;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/**************************************Class Name: ReadMif2Json*Description: <讀取Mif文件轉為GeoJson格式>*@author: seminar*@since 1.0.0*************************************/
public class ReadMif2Json {public static void main(String[] args) throws ParseException, IOException {String mifPathDir = "E:\\mat\\mif\\";List<Feature> roadLinkMifFeatures = readFeature(mifPathDir + File.separator + "ROAD_LINK.mif");//1、將mif內容加載到內存JSONArray jsonFeatures = new JSONArray();JSONObject resultJson = new JSONObject();for (int i = 0; i < roadLinkMifFeatures.size(); i++) {Feature roadLinkMifFeature = roadLinkMifFeatures.get(i);JSONObject jsonFeature = new JSONObject();// 組裝geometryJSONObject geometry = getRoadLinkGeometry(roadLinkMifFeature);jsonFeature.put("geometry", geometry);//組裝typejsonFeature.put("type", "Feature");//組裝propertiesJSONObject roadLinkProperties = getRoadLinkProperties(roadLinkMifFeature);jsonFeature.put("properties", roadLinkProperties);//組裝id // todo 待定id的值jsonFeature.put("id", i * 2);jsonFeatures.add(jsonFeature);if (i == 0) {testField(roadLinkMifFeature);System.out.println("geojson: " + JSON.toJSONString(jsonFeature));}}resultJson.put("type", "FeatureCollection");resultJson.put("features", jsonFeatures);//將結果json寫入制定目錄writeJson(mifPathDir, resultJson, "roadlink");}/*** 讀取Feature** @param mifPath mif文件路徑* @return List<Feature>*/public static List<Feature> readFeature(String mifPath) throws IOException {Map<String, String> params = new HashMap<String, String>();params.put("version", "300");params.put("charset", "WindowsSimpChinese");params.put("delimiter", ",");params.put("coordsys", "Earth Projection 1, 0");transferEncoding(mifPath);transferEncoding(mifPath.replaceFirst("\\.(mif|MIF)", ".mid"));List<Feature> features = new ArrayList<Feature>();try {MIFFile mifFile = new MIFFile(mifPath, params);FeatureReader<SimpleFeatureType, SimpleFeature> reader = mifFile.getFeatureReader();while (reader.hasNext()) {Feature f = reader.next();features.add(f);}reader.close();} catch (IOException e) {e.printStackTrace();return new ArrayList<Feature>();}return features;}/*** 獲取文件的編碼字符集** @param filePath* @return*/public static String getEncoding(String filePath) throws IOException {String code = "";try {File file = new File(filePath);byte[] head = FileUtils.readFileToByteArray(file);if (head[0] == -1 && head[1] == -2) {code = "UTF-16";System.err.println("文件編碼錯誤: " + file.getName() + " : " + code);} else if (head[0] == -2 && head[1] == -1) {code = "Unicode";System.err.println("文件編碼錯誤: " + file.getName() + " : " + code);} else if (head[0] == -17 && head[1] == -69 && head[2] == -65) {code = "UTF-8";} else {int i = 0;int headSize = head.length;code = "UTF-8 NoBom";while (i < headSize - 2) {if ((head[i] & 0x00FF) < 0x80) {// (10000000)值小于0x80的為ASCII字符i++;continue;} else if ((head[i] & 0x00FF) < 0xC0) {// (11000000)值在0x80和0xC0之間的,不是開頭第一個code = "Not UTF-8";System.err.println("文件編碼錯誤: " + file.getName() + " : " + code + "1000");break;} else if ((head[i] & 0x00FF) < 0xE0) {// (11100000)此范圍內為2字節UTF-8字符if ((head[i + 1] & (0xC0)) != 0x8) {code = "Not UTF-8";System.err.println("文件編碼錯誤: " + file.getName() + " : " + code + "1100");break;} else {i += 2;}} else if ((head[i] & 0x00FF) < 0xF0) {// (11110000)此范圍內為3字節UTF-8字符if ((head[i + 1] & (0xC0)) != 0x80 || (head[i + 2] & (0xC0)) != 0x80) {code = "Not UTF-8";System.err.println("文件編碼錯誤: " + file.getName() + " : " + code + "11100000" + (head[i + 1] & (0xC0)));break;} else {i += 3;}} else {code = "Not UTF-8";System.err.println("文件編碼錯誤: " + file.getName() + " : " + code + "1111");break;}}}} catch (IOException e) {e.printStackTrace();}return code;}/*** 將gbk字符集文件轉換為UTF-8編碼文件** @param filePath*/public static void transferEncoding(String filePath) throws IOException {String encoding = getEncoding(filePath);if (encoding.startsWith("UTF-8")) {return;}List<String> list = new ArrayList<String>();File infile = new File(filePath);try {InputStream inputStream = new FileInputStream(infile);InputStreamReader isReader = new InputStreamReader(inputStream, "GBK");BufferedReader br = new BufferedReader(isReader);String str;// 按行讀取字符串while ((str = br.readLine()) != null) {list.add(str);}br.close();inputStream.close();} catch (IOException e) {e.printStackTrace();}if (!list.isEmpty()) {File outFile = new File(filePath);try {OutputStream outStream = new FileOutputStream(outFile);OutputStreamWriter outWriter = new OutputStreamWriter(outStream, "UTF-8");BufferedWriter bw = new BufferedWriter(outWriter);for (String line : list) {bw.write(line);bw.write("\r\n");}bw.flush();bw.close();outStream.close();} catch (IOException e) {e.printStackTrace();}}}/*** 給定路徑與Json文件，存儲到硬盤** @param path     給定路徑* @param json     json文件內容* @param fileName 文件名*/public static void writeJson(String path, Object json, String fileName) {BufferedWriter writer = null;File dir = new File(path);if (!dir.exists()) {dir.mkdirs();}File file = new File(dir, fileName);//如果文件不存在，則新建一個if (!file.exists()) {try {file.createNewFile();} catch (IOException e) {e.printStackTrace();}} else {file.delete();try {file.createNewFile();} catch (IOException e) {e.printStackTrace();}}//寫入try {writer = new BufferedWriter(new FileWriter(file));writer.write(json.toString());} catch (IOException e) {e.printStackTrace();} finally {try {if (writer != null) {writer.close();}} catch (IOException e) {e.printStackTrace();}}System.out.println(Thread.currentThread().getName() + "文件寫入成功！");}/*** 根據單個roadLink的要素和Z要素生成對應的Geometry對象** @return*/private static JSONObject getRoadLinkGeometry(Feature roadLinkMifFeature) throws ParseException {//從linkmif中解析出xyz坐標JSONObject geometry = new JSONObject();geometry.put("type", "LineString");String xY = roadLinkMifFeature.getProperty("the_geom").getValue().toString();WKTReader reader = new WKTReader();Geometry xYGeo = reader.read(xY);//從geo對象中解析出坐標Coordinate[] coordinates = xYGeo.getCoordinates();//合并xyz坐標，形成新的Coordinate數組List<List<Double>> coordinatesList = new ArrayList<List<Double>>();for (int i = 0; i < coordinates.length; i++) {List<Double> coordinateList = new ArrayList<Double>();coordinateList.add(coordinates[i].x);coordinateList.add(coordinates[i].y);coordinateList.add(coordinates[i].z);coordinatesList.add(coordinateList);}geometry.put("coordinates", coordinatesList);return geometry;}public static void testField(Feature feature) {Field[] fields = feature.getClass().getDeclaredFields();for (Field field : fields) {//設置是否允許訪問，不是修改原來的訪問權限修飾詞field.setAccessible(true);//獲取字段名，和字段的值try {System.out.println("key: " + field.getName() + " value: " + field.get(feature));} catch (IllegalAccessException e) {e.printStackTrace();}}}/*** 根據單個roadLink的要素和Z要素生成對應的Geometry對象* 傳入roadLink mif對象和Z mif對象** @return*/private static JSONObject getRoadLinkGeometry(Feature roadLinkMifFeature, List<Feature> roadLinkZMifFeatures) throws ParseException {//從linkmif中解析出xy坐標//從zmif中解析出z坐標JSONObject geometry = new JSONObject();geometry.put("type", "LineString");String xY = roadLinkMifFeature.getProperty("the_geom").getValue().toString();WKTReader reader = new WKTReader();Geometry xYGeo = reader.read(xY);//從geo對象中解析出坐標Coordinate[] coordinates = xYGeo.getCoordinates();//合并xyz坐標，形成新的Coordinate數組List<List<Double>> coordinatesList = new ArrayList<List<Double>>();for (int i = 0; i < coordinates.length; i++) {List<Double> coordinateList = new ArrayList<Double>();Double z = Double.parseDouble(roadLinkZMifFeatures.remove(0).getProperty("Z").getValue().toString());coordinates[i].setOrdinate(2, z / 100.0);coordinateList.add(coordinates[i].x);coordinateList.add(coordinates[i].y);coordinateList.add(coordinates[i].z);coordinatesList.add(coordinateList);}geometry.put("coordinates", coordinatesList);return geometry;}/*** 拼裝一個properties對象，并且返回** @param mifFeature* @return*/private static JSONObject getRoadLinkProperties(Feature mifFeature) {JSONObject properties = new JSONObject();//挨個字段注入properties.put("BRIDGE_TYPE", Integer.parseInt(mifFeature.getProperty("BridgeFlag").getValue().toString()));properties.put("DIRECT", Integer.parseInt(mifFeature.getProperty("Direction").getValue().toString()));properties.put("PROVINCE_CODE_RIGHT", Integer.parseInt(mifFeature.getProperty("ProvAdminR").getValue().toString()));properties.put("LINK_PID", Integer.parseInt(mifFeature.getProperty("LinkID").getValue().toString()));properties.put("ACCESS_CHARACTERISTIC", mifFeature.getProperty("Accessible_By").getValue());//todo 待定properties.put("GUID", "to be determinated");properties.put("KIND", Integer.parseInt(mifFeature.getProperty("Kind").getValue().toString()));properties.put("VRU", Integer.parseInt(mifFeature.getProperty("VRU").getValue().toString()));properties.put("E_NODE_PID", Integer.parseInt(mifFeature.getProperty("EnodeID").getValue().toString()));properties.put("IS_VARIABLE_SPEED", Integer.parseInt(mifFeature.getProperty("VarSpeedLimit").getValue().toString()));//todo 待定properties.put("MEMO", "");//todo 待定properties.put("LEFT_NUM", 1);properties.put("MESH", mifFeature.getProperty("Mesh").getValue());properties.put("PROVINCE_CODE_LEFT", Integer.parseInt(mifFeature.getProperty("ProvAdminL").getValue().toString()));//todoproperties.put("IS_REFLINE", 1);//todoproperties.put("TRAFFIC_SIGNAL", 0);String LaneNumS2E = mifFeature.getProperty("LaneNumS2E").getValue().toString();if (LaneNumS2E.equals("N")) {LaneNumS2E = "0";}properties.put("S_NODE_PID", Integer.parseInt(mifFeature.getProperty("SnodeID").getValue().toString()));properties.put("LANE_NUM", Integer.parseInt(LaneNumS2E));properties.put("MULTI_DIGITIZED", Integer.parseInt(mifFeature.getProperty("IsMultiDZ").getValue().toString()));//todoproperties.put("LENGTH", 0);properties.put("TRANTYPE", Integer.parseInt(mifFeature.getProperty("TranFlag").getValue().toString()));properties.put("OVERHEAD_OBSTRUCTION", Integer.parseInt(mifFeature.getProperty("Obstruction").getValue().toString()));return properties;}
}

5. 運行結果

總結

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