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在之前一段的项目中，使用Java模仿Http Post方式发送参数以及文件，单纯的传递参数或者文件可以使用URLConnection进行相应的处理。

          但是项目中涉及到既要传递普通参数，也要传递多个文件（不是单纯的传递XML文件）。在网上寻找之后，发现是使用HttClient来进行响应的操作，起初尝试多次依然不能传递参数和传递文件，后来发现时因为当使用HttpClient时，不能使用request.getParameter()对普通参数进行获取，而要在服务器端使用Upload来进行操作。

          HttpClient4.2 jar下载 ：

         客户端代码：

import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import java.io.InputStream;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.ParseException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.mime.MultipartEntity;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;/** *  * @author  Geray * @version 1.0,2012-6-12  */public class HttpPostArgumentTest2 {	//file1与file2在同一个文件夹下 filepath是该文件夹指定的路径		public void SubmitPost(String url,String filename1,String filename2, String filepath){				HttpClient httpclient = new DefaultHttpClient();				try {				HttpPost httppost = new HttpPost(url);					    FileBody bin = new FileBody(new File(filepath + File.separator + filename1));			  		    FileBody bin2 = new FileBody(new File(filepath + File.separator + filename2));		    		    StringBody comment = new StringBody(filename1);		    MultipartEntity reqEntity = new MultipartEntity();		    		    reqEntity.addPart("file1", bin);//file1为请求后台的File upload;属性    		     reqEntity.addPart("file2", bin2);//file2为请求后台的File upload;属性		     reqEntity.addPart("filename1", comment);//filename1为请求后台的普通参数;属性			    httppost.setEntity(reqEntity);		    		    HttpResponse response = httpclient.execute(httppost);		    			    		    int statusCode = response.getStatusLine().getStatusCode();		    			    			if(statusCode == HttpStatus.SC_OK){			    					System.out.println("服务器正常响应.....");						    	HttpEntity resEntity = response.getEntity();			    		    			    	System.out.println(EntityUtils.toString(resEntity));//httpclient自带的工具类读取返回数据			    		    			    			    	System.out.println(resEntity.getContent());   		    	EntityUtils.consume(resEntity);		    }			    			} catch (ParseException e) {				// TODO Auto-generated catch block				e.printStackTrace();			} catch (IOException e) {				// TODO Auto-generated catch block				e.printStackTrace();			} finally {			    try { 			    	httpclient.getConnectionManager().shutdown(); 			    } catch (Exception ignore) {			    				    }			}		}			/**	 * @param args	 */	public static void main(String[] args) {		// TODO Auto-generated method stub				HttpPostArgumentTest2 httpPostArgumentTest2 = new HttpPostArgumentTest2();				httpPostArgumentTest2.SubmitPost("http://127.0.0.1:8080/demo/receiveData.do",				"test.xml","test.zip","D://test");	}	}

public void receiveData(HttpServletRequest request, HttpServletResponse response) throws AppException{		PrintWriter out = null;		response.setContentType("text/html;charset=UTF-8");				Map map = new HashMap();		FileItemFactory factory = new DiskFileItemFactory();		ServletFileUpload upload = new ServletFileUpload(factory);		File directory = null;  		List
   
     items = new ArrayList();		try {			items = upload.parseRequest(request);			// 得到所有的文件			Iterator
    
      it = items.iterator();			while (it.hasNext()) {				FileItem fItem = (FileItem) it.next();				String fName = "";				Object fValue = null;				if (fItem.isFormField()) { // 普通文本框的值					fName = fItem.getFieldName();//					fValue = fItem.getString();					fValue = fItem.getString("UTF-8");					map.put(fName, fValue);				} else { // 获取上传文件的值					fName = fItem.getFieldName();					fValue = fItem.getInputStream();					map.put(fName, fValue);					String name = fItem.getName();					if(name != null && !("".equals(name))) {						name = name.substring(name.lastIndexOf(File.separator) + 1);						//						String stamp = StringUtils.getFormattedCurrDateNumberString();						String timestamp_Str = TimeUtils.getCurrYearYYYY();						directory = new File("d://test");  			           		 directory.mkdirs();			            						String filePath = ("d://test")+ timestamp_Str+ File.separator + name;						map.put(fName + "FilePath", filePath);												InputStream is = fItem.getInputStream();						FileOutputStream fos = new FileOutputStream(filePath);						byte[] buffer = new byte[1024];						while (is.read(buffer) > 0) {							fos.write(buffer, 0, buffer.length);						}						fos.flush();						fos.close();						map.put(fName + "FileName", name);					}				}			}		} catch (Exception e) {			System.out.println("读取http请求属性值出错!");//			e.printStackTrace();			logger.error("读取http请求属性值出错");		}				// 数据处理										try {			out = response.getWriter();			out.print("{success:true, msg:'接收成功'}");			out.close();		} catch (IOException e) {			e.printStackTrace();		}	}
    
   

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