废话不多说,直接上代码:
package org.changneng.framework.frameworkweb.utils;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.InputStreamReader;import .HttpURLConnection;import .URL;import .URLEncoder;public class HttpURLConnectionTest {public static final String GET_URL = "/v3/geocode/geo?key=389880a06e3f893ea46036f030c94700&s=rsv3&city=35"+ "&address=平凉市庄浪县朱店镇柳李村三社";public static final String POST_URL = "/v3/geocode/geo?key=389880a06e3f893ea46036f030c94700&s=rsv3&city=35"+ "&address=平凉市庄浪县朱店镇柳李村三社";/*** 接口调用 GET*/public static void httpURLConectionGET() {try {URL url = new URL(GET_URL); // 把字符串转换为URL请求地址HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 打开连接connection.connect();// 连接会话// 获取输入流BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));String line;StringBuilder sb = new StringBuilder();while ((line = br.readLine()) != null) {// 循环读取流sb.append(line);}br.close();// 关闭流connection.disconnect();// 断开连接System.out.println("Get=="+sb.toString());} catch (Exception e) {e.printStackTrace();System.out.println("失败!");}}/*** 接口调用 POST*/public static void httpURLConnectionPOST () {try {URL url = new URL(POST_URL);// 将url 以 open方法返回的urlConnection 连接强转为HttpURLConnection连接 (标识一个url所引用的远程对象连接)HttpURLConnection connection = (HttpURLConnection) url.openConnection();// 此时cnnection只是为一个连接对象,待连接中// 设置连接输出流为true,默认false (post 请求是以流的方式隐式的传递参数)connection.setDoOutput(true);// 设置连接输入流为trueconnection.setDoInput(true);// 设置请求方式为postconnection.setRequestMethod("POST");// post请求缓存设为falseconnection.setUseCaches(false);// 设置该HttpURLConnection实例是否自动执行重定向connection.setInstanceFollowRedirects(true);// 设置请求头里面的各个属性 (以下为设置内容的类型,设置为经过urlEncoded编码过的from参数)// application/x-javascript text/xml->xml数据 //application/x-javascript->json对象 //application/x-www-form-urlencoded->表单数据//这是重点^_^connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");// 建立连接 (请求未开始,直到connection.getInputStream()方法调用时才发起,以上各个参数设置需在此方法之前进行)connection.connect();// 创建输入输出流,用于往连接里面输出携带的参数,(输出内容为?后面的内容)DataOutputStream dataout = new DataOutputStream(connection.getOutputStream());String parm = "storeId=" + URLEncoder.encode("32", "utf-8"); //URLEncoder.encode()方法 为字符串进行编码// 将参数输出到连接dataout.writeBytes(parm);// 输出完成后刷新并关闭流dataout.flush();dataout.close(); // 重要且易忽略步骤 (关闭流,切记!) System.out.println(connection.getResponseCode());// 连接发起请求,处理服务器响应 (从连接获取到输入流并包装为bufferedReader)BufferedReader bf = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line;StringBuilder sb = new StringBuilder(); // 用来存储响应数据// 循环读取流,若不到结尾处while ((line = bf.readLine()) != null) {sb.append(bf.readLine());}bf.close(); // 重要且易忽略步骤 (关闭流,切记!) connection.disconnect(); // 销毁连接System.out.println("Post=="+sb.toString());} catch (Exception e) {e.printStackTrace();}}public static void main(String[] args) {// httpURLConectionGET();httpURLConectionGET();httpURLConnectionPOST();}}
