java客户端post与get请求

来源：互联网发布：2014年网络歌曲编辑：程序博客网时间：2024/05/22 23:08

使用httpclient工具包commons-httpclient-3.1.jar，依赖commons-logging-1.0.4.jar和commons-codec-1.3.jar

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.util.Map;import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.HttpMethod;import org.apache.commons.httpclient.HttpStatus;import org.apache.commons.httpclient.URIException;import org.apache.commons.httpclient.methods.GetMethod;import org.apache.commons.httpclient.methods.PostMethod;import org.apache.commons.httpclient.params.HttpMethodParams;import org.apache.commons.httpclient.util.URIUtil;/** *  *  * <p>Title:HttpTookitEnhance</p> * <p>Description: httpclient模拟http请求，解决返回内容乱码问题</p> * <p>Copyright: Copyright (c) 2010</p> * <p>Company: </p> * @author libin * @version 1.0.0 */public class HttpTookitEnhance{      /**        * 执行一个HTTP GET请求，返回请求响应的HTML        *        * @param url                 请求的URL地址        * @param queryString 请求的查询参数,可以为null        * @param charset         字符集        * @param pretty            是否美化        * @return 返回请求响应的HTML        */      public static String doGet ( String url, String queryString, String charset, boolean pretty )      {            StringBuffer response = new StringBuffer();            HttpClient client = new HttpClient();            HttpMethod method = new GetMethod(url);            try            {                  if ( queryString != null && !queryString.equals("") )                        //对get请求参数做了http请求默认编码，好像没有任何问题，汉字编码后，就成为%式样的字符串                         method.setQueryString(URIUtil.encodeQuery(queryString));                  client.executeMethod(method);                  if ( method.getStatusCode() == HttpStatus.SC_OK )                  {                        BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));                        String line;                        while ( ( line = reader.readLine() ) != null )                        {                              if ( pretty )                                    response.append(line).append(System.getProperty("line.separator"));                              else                                    response.append(line);                        }                        reader.close();                  }            }            catch ( URIException e )            {            }            catch ( IOException e )            {            }            finally            {                  method.releaseConnection();            }            return response.toString();      }      /**        * 执行一个HTTP POST请求，返回请求响应的HTML        *        * @param url         请求的URL地址        * @param params    请求的查询参数,可以为null        * @param charset 字符集        * @param pretty    是否美化        * @return 返回请求响应的HTML        */      public static String doPost ( String url, Map<String, String> params, String charset, boolean pretty )      {            StringBuffer response = new StringBuffer();            HttpClient client = new HttpClient();            HttpMethod method = new PostMethod(url);            //设置Http Post数据             if ( params != null )            {                  HttpMethodParams p = new HttpMethodParams();                  for ( Map.Entry<String, String> entry : params.entrySet() )                  {                        p.setParameter(entry.getKey(), entry.getValue());                  }                  method.setParams(p);            }            try            {                  client.executeMethod(method);                  if ( method.getStatusCode() == HttpStatus.SC_OK )                  {                        BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));                        String line;                        while ( ( line = reader.readLine() ) != null )                        {                              if ( pretty )                                    response.append(line).append(System.getProperty("line.separator"));                              else                                    response.append(line);                        }                        reader.close();                  }            }            catch ( IOException e )            {            }            finally            {                  method.releaseConnection();            }            return response.toString();      }      public static void main ( String [] args )      {            String y = doGet("http://video.sina.com.cn/life/tips.html", null, "GBK", true);            System.out.println(y);      }}

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