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 <a href="mailto:[e-mail]"> Geray</a> * @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 blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {    try {     httpclient.getConnectionManager().shutdown();     } catch (Exception ignore) {        }}}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubHttpPostArgumentTest2 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<FileItem> items = new ArrayList();try {items = upload.parseRequest(request);// 得到所有的文件Iterator<FileItem> 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();}}