安卓基础之Get方式发送http请求

一、在android用Get方式发送http请求，使用的是java标准类。

主要步骤：

1.构造URL

URL url = new URL(String path);

2.设置连接

httpURLConnection = (HttpURLConnection) url.openConnection();
//设置超时时间
httpURLConnection.setConnectTimeout(3000);
//设置请求使用GET方式
httpURLConnection.setRequestMethod("GET");
int responsecode = httpURLConnection.getResponseCode();//返回至为响应编号，如：HTTP_OK表示连接成功。

3.获取返回数据

if(responsecode == HttpURLConnection.HTTP_OK){
inputStream = httpURLConnection.getInputStream();
}   
new InputStreamReader(inputStream,"utf-8")

4.关闭连接

void disconnect()

二、在Eclipse中创建Demo实现get方式的请求的逻辑代码：

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

public class HttpUtils {

    private static String URL_PATH="http://www.baidu.com";

    private static HttpURLConnection httpURLConnection = null;

    public HttpUtils(){}

    public static void main(String[] args){

        shuchu();

    }

     public static void shuchu(){

        InputStream inputStream = getInputStream();

        String result;

        try {

            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream,"utf-8"));

            result = "";

            String line = "";

       try {

            while((line = reader.readLine())!= null){

                   result = result+ line;

               }

     } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

   }

          System.out.println(result);

          httpURLConnection.disconnect();

        } catch (UnsupportedEncodingException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

    /**

     * 获取服务端的数据，以InputStream返回

     * @return

     */

    public static InputStream getInputStream(){

        InputStream inputStream = null;

        try {

            URL url = new URL(URL_PATH);

            if(url != null){

                try {

                    httpURLConnection = (HttpURLConnection) url.openConnection();

                    //设置超时时间

                    httpURLConnection.setConnectTimeout(3000);

                    //设置请求方式

                    httpURLConnection.setRequestMethod("GET");

                    int responsecode = httpURLConnection.getResponseCode();

                    if(responsecode == HttpURLConnection.HTTP_OK){

                        inputStream = httpURLConnection.getInputStream();

                    }

                } catch (IOException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

        } catch (MalformedURLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return inputStream;

    }

}