package cn.com.ajava.util;import java.io.File;import java.io.Serializable;import java.util.Iterator;import java.util.LinkedHashMap;import java.util.Map;import java.util.Map.Entry;import org.apache.http.Consts;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.ContentType;import org.apache.http.entity.mime.MultipartEntityBuilder;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.entity.mime.content.StringBody;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;/** * HttpClient工具類(lèi) *  * @author 曾繁添 * @version 1.0 */public class HttpClientUtil{ public final static String Method_POST = "POST"; public final static String Method_GET = "GET"; /** * multipart/form-data類(lèi)型的表單提交 *  * @param form *  表單數(shù)據(jù) */ public static String submitForm(MultipartForm form) { // 返回字符串 String responseStr = ""; // 創(chuàng)建HttpClient實(shí)例 HttpClient httpClient = new DefaultHttpClient(); try {  // 實(shí)例化提交請(qǐng)求  HttpPost httpPost = new HttpPost(form.getAction());  // 創(chuàng)建MultipartEntityBuilder  MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();  // 追加普通表單字段  Map<String, String> normalFieldMap = form.getNormalField();  for (Iterator<Entry<String, String>> iterator = normalFieldMap.entrySet().iterator(); iterator.hasNext();)  {  Entry<String, String> entity = iterator.next();  entityBuilder.addPart(entity.getKey(), new StringBody(entity.getValue(), ContentType.create("text/plain", Consts.UTF_8)));  }  // 追加文件字段  Map<String, File> fileFieldMap = form.getFileField();  for (Iterator<Entry<String, File>> iterator = fileFieldMap.entrySet().iterator(); iterator.hasNext();)  {  Entry<String, File> entity = iterator.next();  entityBuilder.addPart(entity.getKey(), new FileBody(entity.getValue()));  }  // 設(shè)置請(qǐng)求實(shí)體  httpPost.setEntity(entityBuilder.build());  // 發(fā)送請(qǐng)求  HttpResponse response = httpClient.execute(httpPost);  int statusCode = response.getStatusLine().getStatusCode();  // 取得響應(yīng)數(shù)據(jù)  HttpEntity resEntity = response.getEntity();  if (200 == statusCode)  {  if (resEntity != null)  {   responseStr = EntityUtils.toString(resEntity);  }  } } catch (Exception e) {  System.out.println("提交表單失敗，原因：" + e.getMessage()); } finally {  httpClient.getConnectionManager().shutdown(); } return responseStr; } /** 表單字段Bean */ public class MultipartForm implements Serializable { /** 序列號(hào) */ private static final long serialVersionUID = -2138044819190537198L; /** 提交URL **/ private String action = ""; /** 提交方式：POST/GET **/ private String method = "POST"; /** 普通表單字段 **/ private Map<String, String> normalField = new LinkedHashMap<String, String>(); /** 文件字段 **/ private Map<String, File> fileField = new LinkedHashMap<String, File>(); public String getAction() {  return action; } public void setAction(String action) {  this.action = action; } public String getMethod() {  return method; } public void setMethod(String method) {  this.method = method; } public Map<String, String> getNormalField() {  return normalField; } public void setNormalField(Map<String, String> normalField) {  this.normalField = normalField; } public Map<String, File> getFileField() {  return fileField; } public void setFileField(Map<String, File> fileField) {  this.fileField = fileField; } public void addFileField(String key, File value) {  fileField.put(key, value); } public void addNormalField(String key, String value) {  normalField.put(key, value); } }}

package cn.com.ajava.servlet;import java.io.File;import java.io.IOException;import java.io.PrintWriter;import java.util.Enumeration;import java.util.Iterator;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.FileItem;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;/** * 文件上傳Servlet * @author 曾繁添 */public class ServletUploadFile extends HttpServlet{ private static final long serialVersionUID = 1L; // 限制文件的上傳大小 1G private int maxPostSize = 1000 * 1024 * 10; public ServletUploadFile() { super(); } @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { PrintWriter out = response.getWriter(); String contextPath = request.getSession().getServletContext().getRealPath("/"); String webDir = "uploadfile" + File.separator + "images" + File.separator; String systemPath = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()+ systemPath + "/"; request.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); try { DiskFileItemFactory factory = new DiskFileItemFactory(); factory.setSizeThreshold(1024 * 4); // 設(shè)置寫(xiě)入大小 ServletFileUpload upload = new ServletFileUpload(factory); upload.setSizeMax(maxPostSize); // 設(shè)置文件上傳最大大小 System.out.println(request.getContentType()); //獲取action后面拼接的參數(shù)(如：http://www.baidu.com?q=android) Enumeration enumList = request.getParameterNames(); while(enumList.hasMoreElements()){ String key = (String)enumList.nextElement(); String value = request.getParameter(key); System.out.println(key+"="+value); } //獲取提交表單項(xiàng)目 List listItems = upload.parseRequest(request); Iterator iterator = listItems.iterator(); while (iterator.hasNext()) { FileItem item = (FileItem) iterator.next(); //非普通表單項(xiàng)目 if (!item.isFormField()) {  //獲取擴(kuò)展名  String ext = item.getName().substring(item.getName().lastIndexOf("."), item.getName().length());  String fileName = System.currentTimeMillis() + ext;  File dirFile = new File(contextPath + webDir + fileName);  if (!dirFile.exists())  {  dirFile.getParentFile().mkdirs();  }  item.write(dirFile);  System.out.println("fileName：" + item.getName() + "=====" + item.getFieldName() + " size： "+ item.getSize());  System.out.println("文件已保存到： " + contextPath + webDir + fileName);  //響應(yīng)客戶(hù)端請(qǐng)求  out.print(basePath + webDir.replace("http://", "/") + fileName);  out.flush(); }else{  //普通表單項(xiàng)目  System.out.println("表單普通項(xiàng)目："+item.getFieldName()+"=" + item.getString("UTF-8"));// 顯示表單內(nèi)容。item.getString("UTF-8")可以保證中文內(nèi)容不亂碼 } } } catch (Exception e) { e.printStackTrace(); } finally { out.close(); } }}

//創(chuàng)建HttpClientUtil實(shí)例HttpClientUtil httpClient = new HttpClientUtil();MultipartForm form = httpClient.new MultipartForm();//設(shè)置form屬性、參數(shù)form.setAction("http://192.168.1.7:8080/UploadFileDemo/cn/com/ajava/servlet/ServletUploadFile");File photoFile = new File(sddCardPath+"http://data//me.jpg");form.addFileField("photo", photoFile);form.addNormalField("name", "曾繁添");form.addNormalField("tel", "15122946685");//提交表單HttpClientUtil.submitForm(form);