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
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