java实现httpclient服务端客户端代码例子

package httpcall; import java.io.IOException; import javax.xml.ws.http.HTTPException; import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.params.HttpMethodParams; /** * @Module HttpClientUtil * @Description 客户端 * @Author zhangweigang * @Date 2015-11-16 */ public class HttpClientUtil { 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); } catch (HttpException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ //6.释放连接 getMethod.releaseConnection(); } return responseMsg; } 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/UpDown/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); // 4.执行postMethod,调用http接口 try { httpClient.executeMethod(postMethod); //5.读取内容 responseMsg = postMethod.getResponseBodyAsString().trim(); //6.处理返回的内容 } catch (HttpException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ postMethod.releaseConnection(); } return responseMsg; } public static void main(String[] args) { String param1="111"; String param2="222"; // System.out.println("get方式调用http接口\n"+getHttp(param1, param2)); System.out.println("post方式调用http接口\n"+postHttp(param1,param2)); } }