java postdata_java发送post请求,使用multipart form-data的方式传递参数,可实现服务器间文件上传功能...
/*** 測試上傳圖片
**/
public static voidtestUploadImage(){
String url= "http://xxxtest/Api/testUploadModelBaking";
String fileName= "e:/username/textures/antimap_0017.png";
Map textMap = new HashMap();//可以設置多個input的name,value
textMap.put("name", "testname");
textMap.put("type", "2");//設置file的name,路徑
Map fileMap = new HashMap();
fileMap.put("upfile", fileName);
String contentType= "";//image/png
String ret =formUpload(url, textMap, fileMap,contentType);
System.out.println(ret);//{"status":"0","message":"add succeed","baking_url":"group1\/M00\/00\/A8\/CgACJ1Zo-LuAN207AAQA3nlGY5k151.png"}
}/*** 上傳圖片
*@paramurlStr
*@paramtextMap
*@paramfileMap
*@paramcontentType 沒有傳入文件類型默認采用application/octet-stream
* contentType非空采用filename匹配默認的圖片類型
*@return返回response數據*/@SuppressWarnings("rawtypes")public static String formUpload(String urlStr, MaptextMap,
MapfileMap,String contentType) {
String res= "";
HttpURLConnection conn= null;//boundary就是request頭和上傳文件內容的分隔符
String BOUNDARY = "---------------------------123821742118716";try{
URL url= newURL(urlStr);
conn=(HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(30000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");//conn.setRequestProperty("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
conn.setRequestProperty("Content-Type","multipart/form-data; boundary=" +BOUNDARY);
OutputStream out= newDataOutputStream(conn.getOutputStream());//text
if (textMap != null) {
StringBuffer strBuf= newStringBuffer();
Iterator iter=textMap.entrySet().iterator();while(iter.hasNext()) {
Map.Entry entry=(Map.Entry) iter.next();
String inputName=(String) entry.getKey();
String inputValue=(String) entry.getValue();if (inputValue == null) {continue;
}
strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n");
strBuf.append(inputValue);
}
out.write(strBuf.toString().getBytes());
}//file
if (fileMap != null) {
Iterator iter=fileMap.entrySet().iterator();while(iter.hasNext()) {
Map.Entry entry=(Map.Entry) iter.next();
String inputName=(String) entry.getKey();
String inputValue=(String) entry.getValue();if (inputValue == null) {continue;
}
File file= newFile(inputValue);
String filename=file.getName();//沒有傳入文件類型,同時根據文件獲取不到類型,默認采用application/octet-stream
contentType = newMimetypesFileTypeMap().getContentType(file);//contentType非空采用filename匹配默認的圖片類型
if(!"".equals(contentType)){if (filename.endsWith(".png")) {
contentType= "image/png";
}else if (filename.endsWith(".jpg") || filename.endsWith(".jpeg") || filename.endsWith(".jpe")) {
contentType= "image/jpeg";
}else if (filename.endsWith(".gif")) {
contentType= "image/gif";
}else if (filename.endsWith(".ico")) {
contentType= "image/image/x-icon";
}
}if (contentType == null || "".equals(contentType)) {
contentType= "application/octet-stream";
}
StringBuffer strBuf= newStringBuffer();
strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"; filename=\"" + filename + "\"\r\n");
strBuf.append("Content-Type:" + contentType + "\r\n\r\n");
out.write(strBuf.toString().getBytes());
DataInputStream in= new DataInputStream(newFileInputStream(file));int bytes = 0;byte[] bufferOut = new byte[1024];while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut,0, bytes);
}
in.close();
}
}byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
out.write(endData);
out.flush();
out.close();//讀取返回數據
StringBuffer strBuf = newStringBuffer();
BufferedReader reader= new BufferedReader(newInputStreamReader(conn.getInputStream()));
String line= null;while ((line = reader.readLine()) != null) {
strBuf.append(line).append("\n");
}
res=strBuf.toString();
reader.close();
reader= null;
}catch(Exception e) {
System.out.println("發送POST請求出錯。" +urlStr);
e.printStackTrace();
}finally{if (conn != null) {
conn.disconnect();
conn= null;
}
}returnres;
}
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