- package com.hongyuan.test;
- import java.io.BufferedReader;
- import java.io.IOException;
- import java.io.InputStreamReader;
- import java.io.PrintWriter;
- import java.net.HttpURLConnection;
- import java.net.URL;
- public class HttpClient {
- //发送一个GET请求
- public static String get(String path) throws Exception{
- HttpURLConnection httpConn=null;
- BufferedReader in=null;
- try {
- URL url=new URL(path);
- httpConn=(HttpURLConnection)url.openConnection();
- //读取响应
- if(httpConn.getResponseCode()==HttpURLConnection.HTTP_OK){
- StringBuffer content=new StringBuffer();
- String tempStr="";
- in=new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
- while((tempStr=in.readLine())!=null){
- content.append(tempStr);
- }
- return content.toString();
- }else{
- throw new Exception("请求出现了问题!");
- }
- } catch (IOException e) {
- e.printStackTrace();
- }finally{
- in.close();
- httpConn.disconnect();
- }
- return null;
- }
- //发送一个GET请求,参数形式key1=value1&key2=value2...
- public static String post(String path,String params) throws Exception{
- HttpURLConnection httpConn=null;
- BufferedReader in=null;
- PrintWriter out=null;
- try {
- URL url=new URL(path);
- httpConn=(HttpURLConnection)url.openConnection();
- httpConn.setRequestMethod("POST");
- httpConn.setDoInput(true);
- httpConn.setDoOutput(true);
- //发送post请求参数
- out=new PrintWriter(httpConn.getOutputStream());
- out.println(params);
- out.flush();
- //读取响应
- if(httpConn.getResponseCode()==HttpURLConnection.HTTP_OK){
- StringBuffer content=new StringBuffer();
- String tempStr="";
- in=new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
- while((tempStr=in.readLine())!=null){
- content.append(tempStr);
- }
- return content.toString();
- }else{
- throw new Exception("请求出现了问题!");
- }
- } catch (IOException e) {
- e.printStackTrace();
- }finally{
- in.close();
- out.close();
- httpConn.disconnect();
- }
- return null;
- }
- public static void main(String[] args) throws Exception {
- //String resMessage=HttpClient.get("http://localhost:3000/hello?hello=hello get");
- String resMessage=HttpClient.post("http://localhost:3000/hello", "hello=hello post");
- System.out.println(resMessage);
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/2404201512431.html
来源: http://www.codesnippet.cn/detail/2404201512431.html