HttpClient通过Post上传文件

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 ：http://download.csdn.net/detail/just_szl/4370574

         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");
	}
	
}

服务端代码：

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();
		}


	}

http://blog.csdn.net/Just_szl/article/details/7659347