httpClient,JAVA访问http request response

package com;

import java.io.IOException;

import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;



public class HttpClientSimple {
 public static void main(String[] args){
     //构造HttpClient的实例
     HttpClient httpClient = new HttpClient();
     //设置 Http 连接超时为5秒
     httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(5000);
     //创建GET方法的实例
    String url = "http://192.168.1.108:8080/cyberage/Page!test.action";
     GetMethod getMethod = new GetMethod(url);
     
     //设置 get 请求超时为 5 秒
     getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT,5000);
     //使用系统提供的默认的恢复策略
     getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
       new DefaultHttpMethodRetryHandler());
     try{
      //执行getMethod
      int statusCode = httpClient.executeMethod(getMethod);
      if (statusCode != HttpStatus.SC_OK){
       System.err.println("Method failed: "
              + getMethod.getStatusLine());
      }
      
      //读取内容 ,第二种方式获取
      /*String newStr = new String(getMethod.getResponseBodyAsString().getBytes(),"UTF-8");
      System.out.println(newStr);*/
      
      //读取内容 ,第一种方式获取
      byte[] responseBody = getMethod.getResponseBody();
      //处理内容
      System.out.println(new String(responseBody));
     }catch(HttpException e){
      //发生致命的异常，可能是协议不对或者返回的内容有问题
        System.out.println("Please check your provided http address!");
        e.printStackTrace();
     }catch(IOException e){
      //发生网络异常
      e.printStackTrace();
     }finally{
      //释放连接
      getMethod.releaseConnection();
     }
 }

}

 它返回的结果是html的标签的页面代码，然后再在里面进行解析。

如果要想运行上面的代码需要加入下面的“官网的3个jar包.rar” 即可。

commons-codec-1.4.jar   commons-httpclient-3.0.1.jar   commons-logging-1.1.1.jar

评论

2 楼 dandongsoft 2013-04-11  

aaaaaaaaaaaaaaa

1 楼 songwei1024 2011-11-09  

marked