http形式的webservice

 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.HashMap;
 import java.util.Map;

 import com.google.gson.Gson;
 /**
  * http格式的webservice主要工具类
  * @author Administrator
  *
  */
 public class HttpWebServiceUtils {

     /*
      * params 填写的URL的参数 encode 字节编码
      */
     public static String sendPostMessage(Map<String, String> params,String encode,String path) {
         URL url = null;
         try {
             url = new URL(path);
         } catch (MalformedURLException e1) {
             e1.printStackTrace();
             return "";
         };

         StringBuffer stringBuffer = new StringBuffer();

         if (params != null && !params.isEmpty()) {
             for (Map.Entry<String, String> entry : params.entrySet()) {
                 try {
                     stringBuffer
                             .append(entry.getKey())
                             .append("=")
                             .append(URLEncoder.encode(entry.getValue(), encode))
                             .append("&");
                 } catch (UnsupportedEncodingException e) {
                     e.printStackTrace();
                     return "";
                 }
             }
             //删掉最后一个 & 字符
             stringBuffer.deleteCharAt(stringBuffer.length() - 1);
             System.out.println("传递的所有参数信息：" + stringBuffer.toString());
             HttpURLConnection httpURLConnection = null;
             try {
                 httpURLConnection = (HttpURLConnection) url.openConnection();
                 httpURLConnection.setConnectTimeout(3000);
                 httpURLConnection.setDoInput(true);// 从服务器获取数据
                 httpURLConnection.setDoOutput(true);// 向服务器写入数据

                 //获得上传信息的字节大小及长度
                 byte[] mydata = stringBuffer.toString().getBytes();
                 //设置请求体的类型
                 httpURLConnection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
                 httpURLConnection.setRequestProperty("Content-Lenth",String.valueOf(mydata.length));

                 //获得输出流，向服务器输出数据
                 OutputStream outputStream = (OutputStream) httpURLConnection.getOutputStream();
                 outputStream.write(mydata);
                 outputStream.flush();// 强制把缓冲区的数据写入到文件并清空缓冲区
                 outputStream.close();// 关闭连接
                 //获得服务器响应的结果和状态码
                 int responseCode = httpURLConnection.getResponseCode();
                 if (responseCode == 200) {
                     //获得输入流，从服务器端获得数据
                     InputStream inputStream = (InputStream) httpURLConnection.getInputStream();
                     return (changeInputStream(inputStream, encode));
                 }
             } catch (IOException e) {
                 e.printStackTrace();
                 return "";
             } finally {
                 if (httpURLConnection != null) {
                     httpURLConnection.disconnect();
                 }
             }
         }
         return "";
     }

     /*
      *把从输入流InputStream按指定编码格式encode变成字符串String
      */
     public static String changeInputStream(InputStream inputStream,String encode) {

         // ByteArrayOutputStream 一般叫做内存流
         ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
         byte[] data = new byte[1024];
         int len = 0;
         String result = "";
         if (inputStream != null) {

             try {
                 while ((len = inputStream.read(data)) != -1) {
                     byteArrayOutputStream.write(data, 0, len);
                 }
                 result = new String(byteArrayOutputStream.toByteArray(), encode);

             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
         return result;
     }

     public static void main(String[] args) {
         //http://localhost:8088/online.video/account/account!httpAddAccount.do
         //?account.userId=123&account.password=2&account.name=2&account.sex=1&account.type=0&account.phone=2
         //params是请求的参数的map形式
         Map<String, String> params = new HashMap<String, String>();
         params.put("account.userId", "1234");
         params.put("account.password", "123");
         params.put("account.name", "张三");
         params.put("account.sex", "0");
         params.put("account.type", "0");
         params.put("account.phone", "13888888888");
         //发送请求，得到响应结果
         String result = HttpWebServiceUtils.sendPostMessage(params, "UTF-8",
                 "http://localhost:8088/online.video/account/account!httpAddAccount.do");
         System.out.println(result);
         Gson gson = new Gson();

         /*
          * 下面是对json格式的结果做json解析，用的是gson
          */

         /*GsonResult gsonResult = gson.fromJson(result, GsonResult.class);
         System.out.println(gsonResult.getSuccess());*/
     }
 }

仿main方法的调用就可以了，接口方法就是在Controller里写一个这个请求的方法