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文章目录
  1. 1. 简单介绍
  2. 2. 实例

简单介绍

在Android中，通常需要网络通信，HTTP协议通信比较常见，经常通过HttpURLConnection和HttpClient接口来实现，本篇先介绍在Android中使用HttpURLConnection来进行网络通信。

实例

进行网络多线程操作使用AsyncTask异步类更好，但这里主要介绍HttpURlConnection的使用就通过Thread线程来简单操作，不要忘了加允许联网的权限。还是以湖南文理学院班级课表为例，以下是简单实现的源代码

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package com.carlos.httpurlconnection;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		// 开启线程
		thread.start();
	}

	// 创建线程，里面调用下面写的get和post方法
	Thread thread = new Thread() {
		public void run() {
			get();
			post();
		};
	};

	// HttpURLConnection之get方法
	void get() {
		URL url;
		try {
			url = new URL("http://www.huas.cn:83/jwweb/ZNPK/KBFB_ClassSel.aspx");
			HttpURLConnection connection = (HttpURLConnection) url
					.openConnection();
			connection.setConnectTimeout(10 * 000);// 设置连接超时时间
			connection.connect();
			// 通过InputStreamReader读取流，设置编码防止中文乱码
			InputStreamReader isr = new InputStreamReader(
					connection.getInputStream(), "GBK");
			BufferedReader reader = new BufferedReader(isr);
			String inputLine = null;
			String resultData = "";
			while ((inputLine = reader.readLine()) != null) {
				resultData += inputLine;
			}
			Log.i("Http通信之HttpURLConnection", "get方法\n" + resultData);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// HttpURLConnection之post方法
	void post() {
		URL url;
		try {
			url = new URL("http://www.huas.cn:83/jwweb/ZNPK/KBFB_ClassSel_rpt.aspx");
			// 使用HttpURLConnection打开连接
			HttpURLConnection connection = (HttpURLConnection) url.openConnection();
			connection.setDoOutput(true);
			connection.setDoInput(true);
			// 设置请求方法为POST
			connection.setRequestMethod("POST");
			// 请求不能使用缓存
			connection.setUseCaches(false);
			connection.setInstanceFollowRedirects(true);
			// 配置请求的Content-type
			connection.setRequestProperty("Content-type","application/x-www-form-urlencoded");
			// 连接
			connection.connect();
			DataOutputStream dos = new DataOutputStream(
					connection.getOutputStream());

			// 需要post的参数
			StringBuffer buffer = new StringBuffer();
			buffer.append("chkrxkc=1").append("&").append("Sel_XNXQ=20141")
					.append("&").append("Sel_XZBJ=2013120402").append("&")
					.append("Submit01=????").append("&").append("txtxzbj=")
					.append("&").append("type=2");

			byte[] bytes = buffer.toString().getBytes();
			dos.write(bytes);
			dos.flush();
			dos.close();

			InputStream is = connection.getInputStream();
			InputStreamReader isr = new InputStreamReader(is, "GBK");
			BufferedReader reader = new BufferedReader(isr);
			String temp;
			StringBuffer sb = new StringBuffer();
			while ((temp = reader.readLine()) != null) {
				sb.append(temp);
			}
			is.close();
			connection.disconnect();
			String result = sb.toString();
			Log.i("Http通信之HttpURLConnection", "post方法\n" + result);

		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

Logcat日志中打印出的结果

文章目录
  1. 1. 简单介绍
  2. 2. 实例