HttpClient中的client和server相互调用的两个例子

package com.zl.http.test1; 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.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.params.HttpMethodParams; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * * @author zenglong * * @Description: 以get/post的方式发送数据到指定的http接口---利用httpclient.jar包---HTTP接口的调用 * */ public class HttpClient1 { private static final Log log = LogFactory .getLog(HttpClient1.class); /** * get方式 * @param param1 * @param param2 * @return */ public static String getHttp(String param1,String param2){ String responseMsg = ""; // 1.构造HttpClient的实例 HttpClient httpClient = new HttpClient(); // 用于测试的http接口的url String url="http://localhost:8080/UpDown/httpServer?param1="+param1+"&param2="+param2; // 2.创建GetMethod的实例 GetMethod getMethod = new GetMethod(url); // 使用系统系统的默认的恢复策略 getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); try { //3.执行getMethod,调用http接口 httpClient.executeMethod(getMethod); //4.读取内容 byte[] responseBody = getMethod.getResponseBody(); //5.处理返回的内容 responseMsg = new String(responseBody); log.info(responseMsg); } catch (HttpException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ //6.释放连接 getMethod.releaseConnection(); } return responseMsg; } /** * post方式 * @param param1 * @param param2 * @return */ public static String postHttp(String param1,String param2) { String responseMsg = ""; //1.构造HttpClient的实例 HttpClient httpClient=new HttpClient(); httpClient.getParams().setContentCharset("GBK"); String url="http://localhost:8080/http/httpServer"; //2.构造PostMethod的实例 PostMethod postMethod=new PostMethod(url); //3.把参数值放入到PostMethod对象中 //方式1： /* NameValuePair[] data = { new NameValuePair("param1", param1), new NameValuePair("param2", param2) }; postMethod.setRequestBody(data);*/ //方式2： postMethod.addParameter("param1", param1); postMethod.addParameter("param2", param2); try { // 4.执行postMethod,调用http接口 httpClient.executeMethod(postMethod);//200 //5.读取内容 responseMsg = postMethod.getResponseBodyAsString().trim(); log.info(responseMsg); //6.处理返回的内容 } catch (HttpException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { //7.释放连接 postMethod.releaseConnection(); } return responseMsg; } /** * 测试的main方法 * @param args */ public static void main(String[] args) { String param1="111"; String param2="222"; //get // System.out.println("get方式调用http接口\n"+getHttp(param1, param2)); //post System.out.println("post方式调用http接口\n"+postHttp(param1,param2)); } }