Java HttpURLConnection使用方法详解

Java HttpURLConnection使用方法详解

本文实例为大家分享了java HttpURLConnection使用，供大家参考，具体内容如下

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.InputStrhttp://eam;

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://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://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.setConnechttp://tTimeout(5 * 1000);

OutputStream outStream = conn.getOutputStream();

outStream.write(data);

outStream.flush();

outStream.close();

System.out.println(conn.getResponRJbeutzWseCode()); // 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();

}

}

github：https://github.com/taz372436

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