java模拟http访问请求

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.nio.charset.Charset;  
import java.util.Map;  
import java.util.Vector;  

/** 
 * HTTP请求对象 
 *  
 * @author YYmmiinngg 
 */  
public class HttpUtils {  
    private String defaultContentEncoding;  

    public HttpUtils() {  
        this.defaultContentEncoding = Charset.defaultCharset().name();  
    }  
    public HttpUtils(String charset) {  
        this.defaultContentEncoding = charset;  
    } 
    /** 
     * 发送GET请求 
     *  
     * @param urlString 
     *            URL地址 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendGet(String urlString) throws IOException {  
        return this.send(urlString, "GET", null, null);  
    }  

    /** 
     * 发送GET请求 
     *  
     * @param urlString 
     *            URL地址 
     * @param params 
     *            参数集合 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendGet(String urlString, Map
 
   params)  
            throws IOException {  
        return this.send(urlString, "GET", params, null);  
    }  

    /** 
     * 发送GET请求 
     *  
     * @param urlString 
     *            URL地址 
     * @param params 
     *            参数集合 
     * @param propertys 
     *            请求属性 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendGet(String urlString, Map
  
    params, Map
   
     propertys) throws IOException { return this.send(urlString, "GET", params, propertys); } /** * 发送POST请求 * * @param urlString * URL地址 * @return 响应对象 * @throws IOException */ public HttpRespons sendPost(String urlString) throws IOException { return this.send(urlString, "POST", null, null); } /** * 发送POST请求 * * @param urlString * URL地址 * @param params * 参数集合 * @return 响应对象 * @throws IOException */ public HttpRespons sendPost(String urlString, Map
    
      params) throws IOException { return this.send(urlString, "POST", params, null); } /** * 发送POST请求 * * @param urlString * URL地址 * @param params * 参数集合 * @param propertys * 请求属性 * @return 响应对象 * @throws IOException */ public HttpRespons sendPost(String urlString, Map
     
       params, Map
      
        propertys) throws IOException { return this.send(urlString, "POST", params, propertys); } /** * 发送HTTP请求 * * @param urlString * @return 响映对象 * @throws IOException */ private HttpRespons send(String urlString, String method, Map
       
         parameters, Map
        
          propertys) throws IOException { HttpURLConnection urlConnection = null; if (method.equalsIgnoreCase("GET") && parameters != null) { StringBuffer param = new StringBuffer(); int i = 0; for (String key : parameters.keySet()) { if (i == 0) param.append("?"); else param.append("&"); param.append(key).append("=").append(parameters.get(key)); i++; } urlString += param; } URL url = new URL(urlString); urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod(method); urlConnection.setDoOutput(true); urlConnection.setDoInput(true); urlConnection.setUseCaches(false); if (propertys != null) for (String key : propertys.keySet()) { urlConnection.addRequestProperty(key, propertys.get(key)); } if (method.equalsIgnoreCase("POST") && parameters != null) { StringBuffer param = new StringBuffer(); for (String key : parameters.keySet()) { param.append("&"); param.append(key).append("=").append(parameters.get(key)); } urlConnection.getOutputStream().write(param.toString().getBytes()); urlConnection.getOutputStream().flush(); urlConnection.getOutputStream().close(); } return this.makeContent(urlString, urlConnection); } /** * 得到响应对象 * * @param urlConnection * @return 响应对象 * @throws IOException */ private HttpRespons makeContent(String urlString, HttpURLConnection urlConnection) throws IOException { HttpRespons httpResponser = new HttpRespons(); try { InputStream in = urlConnection.getInputStream(); BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(in,this.defaultContentEncoding)); httpResponser.contentCollection = new Vector
         
          (); StringBuffer temp = new StringBuffer(); String line = bufferedReader.readLine(); while (line != null) { httpResponser.contentCollection.add(line); temp.append(line).append("\r\n"); line = bufferedReader.readLine(); } bufferedReader.close(); String ecod = urlConnection.getContentEncoding(); if (ecod == null) ecod = this.defaultContentEncoding; httpResponser.urlString = urlString; httpResponser.defaultPort = urlConnection.getURL().getDefaultPort(); httpResponser.file = urlConnection.getURL().getFile(); httpResponser.host = urlConnection.getURL().getHost(); httpResponser.path = urlConnection.getURL().getPath(); httpResponser.port = urlConnection.getURL().getPort(); httpResponser.protocol = urlConnection.getURL().getProtocol(); httpResponser.query = urlConnection.getURL().getQuery(); httpResponser.ref = urlConnection.getURL().getRef(); httpResponser.userInfo = urlConnection.getURL().getUserInfo(); httpResponser.content = temp.toString(); httpResponser.contentEncoding = ecod; httpResponser.code = urlConnection.getResponseCode(); httpResponser.message = urlConnection.getResponseMessage(); httpResponser.contentType = urlConnection.getContentType(); httpResponser.method = urlConnection.getRequestMethod(); httpResponser.connectTimeout = urlConnection.getConnectTimeout(); httpResponser.readTimeout = urlConnection.getReadTimeout(); return httpResponser; } catch (IOException e) { throw e; } finally { if (urlConnection != null) urlConnection.disconnect(); } } /** * 默认的响应字符集 */ public String getDefaultContentEncoding() { return this.defaultContentEncoding; } /** * 设置默认的响应字符集 */ public void setDefaultContentEncoding(String defaultContentEncoding) { this.defaultContentEncoding = defaultContentEncoding; } /** * 响应对象 */ public static class HttpRespons { String urlString; int defaultPort; String file; String host; String path; int port; String protocol; String query; String ref; String userInfo; String contentEncoding; String content; String contentType; int code; String message; String method; int connectTimeout; int readTimeout; Vector
          
            contentCollection; public String getContent() { return content; } public String getContentType() { return contentType; } public int getCode() { return code; } public String getMessage() { return message; } public Vector
           
             getContentCollection() { return contentCollection; } public String getContentEncoding() { return contentEncoding; } public String getMethod() { return method; } public int getConnectTimeout() { return connectTimeout; } public int getReadTimeout() { return readTimeout; } public String getUrlString() { return urlString; } public int getDefaultPort() { return defaultPort; } public String getFile() { return file; } public String getHost() { return host; } public String getPath() { return path; } public int getPort() { return port; } public String getProtocol() { return protocol; } public String getQuery() { return query; } public String getRef() { return ref; } public String getUserInfo() { return userInfo; } } }