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