这篇文章将为大家详细讲解有关HttpURLConnection怎么在Java项目中使用，文章内容质量较高，因此小编分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。
包括使用HttpURLConnection执行get/post请求
package com.cn.testproject;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.URL;public class HttpConnectionUrlDemo { public static void main(String[] args) throws Exception { //get(); post(); } public static void get() throws Exception { String path = "http://www.baidu.com"; URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(5 * 1000); conn.setRequestMethod("GET"); InputStream inStream = conn.getInputStream(); byte[] data = toByteArray(inStream); String result = new String(data, "UTF-8"); System.out.println(result); } public static void post() throws Exception { String encoding = "UTF-8"; //post的form参数(json兼职对) String params = "[{\"addTime\":\"2011-09-19 14:23:02\"[],\"iccid\":\"1111\",\"id\":0,\"imei\":\"2222\",\"imsi\":\"3333\",\"phoneType\":\"4444\",\"remark\":\"aaaa\",\"tel\":\"5555\"}]"; String path = "http://www.baidu.com"; byte[] data = params.getBytes(encoding); URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setDoOutput(true); conn.setRequestProperty("Content-Type", "application/x-javascript; charset=" + encoding); conn.setRequestProperty("Content-Length", String.valueOf(data.length)); conn.setConnectTimeout(5 * 1000); OutputStream outStream = conn.getOutputStream(); outStream.write(data); outStream.flush(); outStream.close(); System.out.println(conn.getResponseCode()); // 响应代码 200表示成功 if (conn.getResponseCode() == 200) { InputStream inStream = conn.getInputStream(); String result = new String(toByteArray(inStream), "UTF-8"); System.out.println(result); // 响应代码 200表示成功 } } private static byte[] toByteArray(InputStream input) throws IOException { ByteArrayOutputStream output = new ByteArrayOutputStream(); byte[] buffer = new byte[4096]; int n = 0; while (-1 != (n = input.read(buffer))) { output.write(buffer, 0, n); } return output.toByteArray(); }}关于HttpURLConnection怎么在Java项目中使用就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
