c#的一段代码用java怎么实现？？？？

            WebClient myWebClient = new WebClient();
            WebHeaderCollection myWebHeaderClooection;
            string postDate = "";
            byte[] byteArray;
    myWebClient.Headers.Add("", "");
            myWebClient.Headers.Add("", "");
            myWebClient.Headers.Add("", "");
            myWebHeaderClooection = myWebClient.Headers;
            byteArray = Encoding.Default.GetBytes(postDate);
            myWebClient.UploadData(urlString, "post", byteArray);

解决方案 »

  1.   

    正在下载JAVA参考手册，一会儿给你答案
      

  2.   

    给你段代码吧，我也不想自己写了/**
     *
     * Title:         HttpRequestProxy.java
     * Project:     HP-Common
     * Type:        com.hengpeng.common.web.HttpRequestProxy
     * Author:        benl
     * Create:         2007-7-3 上午03:07:07
     * Copyright:     Copyright (c) 2007
     * Company:
     * 
     */
    package com.hengpeng.ante.http;import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.net.URLEncoder;
    import java.util.HashMap;
    import java.util.Iterator;
    import java.util.Map;
    import java.util.Map.Entry;import org.apache.log4j.Logger;/**
     *
     * HTTP请求代理类
     * 
     * 
     * @author benl
     * @version 1.0, 2007-7-3
     */
    public class HttpRequestProxy
    {
        /**
         * 连接超时
         */
        private static int connectTimeOut = 5000;    /**
         * 读取数据超时
         */
        private static int readTimeOut = 10000;    /**
         * 请求编码
         */
        private static String requestEncoding = "GBK";    private static Logger logger = Logger.getLogger(HttpRequestProxy.class);    /**
         *
         * 发送带参数的GET的HTTP请求
         * 
         * 
         * @param reqUrl HTTP请求URL
         * @param parameters 参数映射表
         * @return HTTP响应的字符串
         */
        public static String doGet(String reqUrl, Map parameters,
                String recvEncoding)
        {
            HttpURLConnection url_con = null;
            String responseContent = null;
            try
            {
                StringBuffer params = new StringBuffer();
                for (Iterator iter = parameters.entrySet().iterator(); iter
                        .hasNext();)
                {
                    Entry element = (Entry) iter.next();
                    params.append(element.getKey().toString());
                    params.append("=");
                    params.append(URLEncoder.encode(element.getValue().toString(),
                            HttpRequestProxy.requestEncoding));
                    params.append("&");
                }            if (params.length() > 0)
                {
                    params = params.deleteCharAt(params.length() - 1);
                }            URL url = new URL(reqUrl);
                url_con = (HttpURLConnection) url.openConnection();
                url_con.setRequestMethod("GET");
                System.setProperty("sun.net.client.defaultConnectTimeout", String
                        .valueOf(HttpRequestProxy.connectTimeOut));// （单位：毫秒）jdk1.4换成这个,连接超时
                System.setProperty("sun.net.client.defaultReadTimeout", String
                        .valueOf(HttpRequestProxy.readTimeOut)); // （单位：毫秒）jdk1.4换成这个,读操作超时
                // url_con.setConnectTimeout(5000);//（单位：毫秒）jdk
                // 1.5换成这个,连接超时
                // url_con.setReadTimeout(5000);//（单位：毫秒）jdk 1.5换成这个,读操作超时
                url_con.setDoOutput(true);
                byte[] b = params.toString().getBytes();
                url_con.getOutputStream().write(b, 0, b.length);
                url_con.getOutputStream().flush();
                url_con.getOutputStream().close();            InputStream in = url_con.getInputStream();
                BufferedReader rd = new BufferedReader(new InputStreamReader(in,
                        recvEncoding));
                String tempLine = rd.readLine();
                StringBuffer temp = new StringBuffer();
                String crlf=System.getProperty("line.separator");
                while (tempLine != null)
                {
                    temp.append(tempLine);
                    temp.append(crlf);
                    tempLine = rd.readLine();
                }
                responseContent = temp.toString();
                rd.close();
                in.close();
            }
            catch (IOException e)
            {
                logger.error("网络故障", e);
            }
            finally
            {
                if (url_con != null)
                {
                    url_con.disconnect();
                }
            }        return responseContent;
        }    /**
         *
         * 发送不带参数的GET的HTTP请求
         * 
         * 
         * @param reqUrl HTTP请求URL
         * @return HTTP响应的字符串
         */
        public static String doGet(String reqUrl, String recvEncoding)
        {
            HttpURLConnection url_con = null;
            String responseContent = null;
            try
            {
                StringBuffer params = new StringBuffer();
                String queryUrl = reqUrl;
                int paramIndex = reqUrl.indexOf("?");            if (paramIndex > 0)
                {
                    queryUrl = reqUrl.substring(0, paramIndex);
                    String parameters = reqUrl.substring(paramIndex + 1, reqUrl
                            .length());
                    String[] paramArray = parameters.split("&");
                    for (int i = 0; i < paramArray.length; i++)
                    {
                        String string = paramArray[i];
                        int index = string.indexOf("=");
                        if (index > 0)
                        {
                            String parameter = string.substring(0, index);
                            String value = string.substring(index + 1, string
                                    .length());
                            params.append(parameter);
                            params.append("=");
                            params.append(URLEncoder.encode(value,
                                    HttpRequestProxy.requestEncoding));
                            params.append("&");
                        }
                    }                params = params.deleteCharAt(params.length() - 1);
                }                   URL url = new URL(queryUrl);
                url_con = (HttpURLConnection) url.openConnection();
                url_con.setRequestMethod("GET");
                System.setProperty("sun.net.client.defaultConnectTimeout", String
                        .valueOf(HttpRequestProxy.connectTimeOut));// （单位：毫秒）jdk1.4换成这个,连接超时
                System.setProperty("sun.net.client.defaultReadTimeout", String
                        .valueOf(HttpRequestProxy.readTimeOut)); // （单位：毫秒）jdk1.4换成这个,读操作超时
                // url_con.setConnectTimeout(5000);//（单位：毫秒）jdk
                // 1.5换成这个,连接超时
    // url_con.setReadTimeout(5000);//（单位：毫秒）jdk 1.5换成这个,读操作超时
                url_con.setDoOutput(true);
                byte[] b = params.toString().getBytes();
                url_con.getOutputStream().write(b, 0, b.length);
                url_con.getOutputStream().flush();
                url_con.getOutputStream().close();
                InputStream in = url_con.getInputStream();
                BufferedReader rd = new BufferedReader(new InputStreamReader(in,
                        recvEncoding));
                String tempLine = rd.readLine();
                StringBuffer temp = new StringBuffer();
                String crlf=System.getProperty("line.separator");
                while (tempLine != null)
                {
                    temp.append(tempLine);
                    temp.append(crlf);
                    tempLine = rd.readLine();
                }
                responseContent = temp.toString();
                rd.close();
                in.close();
            }
            catch (IOException e)
            {
                logger.error("网络故障", e);
            }
            finally
            {
                if (url_con != null)
                {
                    url_con.disconnect();
                }
            }        return responseContent;
        }
      

  3.   

    下面开始是用Post方法提交数据
        /**
         *     * 发送带参数的POST的HTTP请求     *      * 
         * @param reqUrl HTTP请求URL
         * @param parameters 参数映射表
         * @return HTTP响应的字符串
         */
        public static String doPost(String reqUrl, Map parameters,
                String recvEncoding)
        {
            HttpURLConnection url_con = null;
            String responseContent = null;
            try
            {
                StringBuffer params = new StringBuffer();
                for (Iterator iter = parameters.entrySet().iterator(); iter
                        .hasNext();)
                {
                    Entry element = (Entry) iter.next();
                    params.append(element.getKey().toString());
                    params.append("=");
                    params.append(URLEncoder.encode(element.getValue().toString(),
                            HttpRequestProxy.requestEncoding));
                    params.append("&");
                }            if (params.length() > 0)
                {
                    params = params.deleteCharAt(params.length() - 1);
                }            URL url = new URL(reqUrl);
                url_con = (HttpURLConnection) url.openConnection();
                url_con.setRequestMethod("POST");
                System.setProperty("sun.net.client.defaultConnectTimeout", String
                        .valueOf(HttpRequestProxy.connectTimeOut));// （单位：毫秒）jdk1.4换成这个,连接超时
                System.setProperty("sun.net.client.defaultReadTimeout", String
                        .valueOf(HttpRequestProxy.readTimeOut)); // （单位：毫秒）jdk1.4换成这个,读操作超时
                // url_con.setConnectTimeout(5000);//（单位：毫秒）jdk
                // 1.5换成这个,连接超时
                // url_con.setReadTimeout(5000);//（单位：毫秒）jdk 1.5换成这个,读操作超时
                url_con.setDoOutput(true);
                byte[] b = params.toString().getBytes();
                url_con.getOutputStream().write(b, 0, b.length);
                url_con.getOutputStream().flush();
                url_con.getOutputStream().close();            InputStream in = url_con.getInputStream();
                BufferedReader rd = new BufferedReader(new InputStreamReader(in,
                        recvEncoding));
                String tempLine = rd.readLine();
                StringBuffer tempStr = new StringBuffer();
                String crlf=System.getProperty("line.separator");
                while (tempLine != null)
                {
                    tempStr.append(tempLine);
                    tempStr.append(crlf);
                    tempLine = rd.readLine();
                }
                responseContent = tempStr.toString();
                rd.close();
                in.close();
            }
            catch (IOException e)
            {
                logger.error("网络故障", e);
            }
            finally
            {
                if (url_con != null)
                {
                    url_con.disconnect();
                }
            }
            return responseContent;
        }    /**
         * @return 连接超时(毫秒)
         * @see com.hengpeng.common.web.HttpRequestProxy#connectTimeOut
         */
        public static int getConnectTimeOut()
        {
            return HttpRequestProxy.connectTimeOut;
        }    /**
         * @return 读取数据超时(毫秒)
         * @see com.hengpeng.common.web.HttpRequestProxy#readTimeOut
         */
        public static int getReadTimeOut()
        {
            return HttpRequestProxy.readTimeOut;
        }    /**
         * @return 请求编码
         * @see com.hengpeng.common.web.HttpRequestProxy#requestEncoding
         */
        public static String getRequestEncoding()
        {
            return requestEncoding;
        }    /**
         * @param connectTimeOut 连接超时(毫秒)
         * @see com.hengpeng.common.web.HttpRequestProxy#connectTimeOut
         */
        public static void setConnectTimeOut(int connectTimeOut)
        {
            HttpRequestProxy.connectTimeOut = connectTimeOut;
        }    /**
         * @param readTimeOut 读取数据超时(毫秒)
         * @see com.hengpeng.common.web.HttpRequestProxy#readTimeOut
         */
        public static void setReadTimeOut(int readTimeOut)
        {
            HttpRequestProxy.readTimeOut = readTimeOut;
        }    /**
         * @param requestEncoding 请求编码
         * @see com.hengpeng.common.web.HttpRequestProxy#requestEncoding
         */
        public static void setRequestEncoding(String requestEncoding)
        {
            HttpRequestProxy.requestEncoding = requestEncoding;
        }
        
        public static void main(String[] args)
        {
            Map map = new HashMap();
            map.put("actionType", "1");
    //        map.put("issueId", "33");
            String temp = HttpRequestProxy.doPost("http://192.168.0.99/AgentPortal/autoHandler", map, "GBK");
            System.out.println("返回的消息是:"+temp);
            
        }
    }