http发送http报文

package com.lkt.jdk;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class GetHttp {

    public static String getWebContent()throws IOException{

        //创建URL，协议、ip、端口、访问的页面
        URL url=new URL("HTTP","192.168.22.209",7001,"/Request_USER_LOGIN");
        //创建HttpURLConnection 对象
        HttpURLConnection conn=(HttpURLConnection)url.openConnection();
        //设置请求方式POST
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/xml");
        conn.setRequestProperty("Connection", "Keep-Alive");

        //请求的数据
        String xml="<?xml version=\"1.0\" encoding=\"UTF-8\"?> "+
        "<HTTP_XML EventType=\"Request_USER_LOGIN\" TargetSyscode=\"\" RequestId=\"\" TransactionId=\"\">"+
        "   <Item Name=\"admin\"  Password=\"670b14728ad9902aecba32e22fa4f6bd\" UserIp=\"\" Port=\"\" BusinessSysCode=\"\"/>"+
        "</HTTP_XML>";
        //数据长度
        conn.setRequestProperty("Content-Length",xml.length()+"");
        //设置输入和输出流
        conn.setDoOutput(true);
        conn.setDoInput(true);
        //将参数输出到连接
        //使用这种方式，我在本地执行没有问题，在weblogic下出现过错误
        //java.net.ProtocolException: Did not meet stated content length of OutputStream:  you wrote 0 bytes and I was expecting  you to write exactly 241 bytes!!!
        //我使用第二中方法就可以了
        /*方法一
        conn.getOutputStream().write(xml.getBytes("UTF-8"));
        conn.getOutputStream().flush();
        conn.getOutputStream().close();
        */
        /*
         * 方法二 */
        DataOutputStream dos=new DataOutputStream(conn.getOutputStream());
        dos.writeBytes(xml);
        dos.flush();
        dos.close();
        //得到HTTP响应码
        int code=conn.getResponseCode();
        InputStream is=conn.getInputStream();

        //获取返回报文
        BufferedReader bis=new BufferedReader(new InputStreamReader(is));
        StringBuffer sb=new StringBuffer();
        String temp="";
        while((temp=bis.readLine())!=null){
            sb.append(temp+"\n");
        }
        return null;

    }
    public static void main(String[] args)throws Exception {
        getWebContent();
    }
}