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文章目录
  1. 1. 简单介绍
  2. 2. 实例

简单介绍

本篇介绍使用Android中自带的Apache的HttpClient接口进行HTTP操作，为了方便，这里还是使用Thread来简单操作。

实例

以下是通过HttpClient的Get方法和Post方法获取湖南文理学院班级课表的有关信息的源码

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package com.carlos.httpclient;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

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);
        
        thread.start();
    }
    
    Thread thread=new Thread(){
    	public void run() {
    		get();
    		post();
    	};
    };
    
    void get(){
    	String url="http://www.huas.cn:83/jwweb/ZNPK/KBFB_ClassSel.aspx";
    	//HttpGet连接对象
    	HttpGet get=new HttpGet(url);
    	//取得HttpClient对象
    	HttpClient client=new DefaultHttpClient();
    	//设置连接超时
    	HttpConnectionParams.setConnectionTimeout(client.getParams(), 10*000);
    	//设置读取时间超时
    	HttpConnectionParams.setSoTimeout(client.getParams(), 10*000);
    	//设置从连接池中取连接超时
    	ConnManagerParams.setTimeout(client.getParams(), 10*000);
    	//请求HttpClient，取得HttpResponse
    	try {
			HttpResponse response=client.execute(get);
			if (response.getStatusLine().getStatusCode()==200) {
				//取得返回的字符串
				String result=EntityUtils.toString(response.getEntity());
				Log.i("Http通信之HttpClient", "get方法"+result);
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
    }
    
    void post(){
    	String url="http://www.huas.cn:83/jwweb/ZNPK/KBFB_ClassSel_rpt.aspx";
    	//取得HttpClient对象
    	HttpClient client=new DefaultHttpClient();
    	//HttpPost连接对象
    	HttpPost post=new HttpPost(url);
    	//使用BasicNameValuePair来保存要传递的Post参数
    	List<BasicNameValuePair> pairs=new ArrayList<BasicNameValuePair>();
    	pairs.add(new BasicNameValuePair("chkrxkc", "1"));
    	pairs.add(new BasicNameValuePair("Sel_XNXQ", "20141"));
    	pairs.add(new BasicNameValuePair("Sel_XZBJ", "2013120402"));
    	pairs.add(new BasicNameValuePair("Submit01", "????"));
    	pairs.add(new BasicNameValuePair("txtxzbj", ""));
    	pairs.add(new BasicNameValuePair("type", "2"));
    	//设置连接超时
    	HttpConnectionParams.setConnectionTimeout(client.getParams(), 10*000);
    	
		try {
			//设置字符集
			HttpEntity entity = new UrlEncodedFormEntity(pairs,HTTP.UTF_8);
			post.setEntity(entity);
			HttpResponse response=client.execute(post);
			if (response.getStatusLine().getStatusCode()==HttpStatus.SC_OK) {
				String result=EntityUtils.toString(response.getEntity());
				Log.i("Http通信之HttpClient", "post方法"+result);
			}
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (ClientProtocolException 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