一、一個例子查詢歷史的今天發生的事件

  1.去聚合資料或者阿凡達 申請歷史的今天的APPkey

  2.檢視介面使用規範：

 3.根據獲取的資料：請求結果為:{"total":18,"result":[{"year":2003,"month":4,"day":9,"title":"著名劇作家吳祖光逝世","type":1},{"year":2002,"month":4,"day":9,"title":"中國出版集團在京成立","type":1},{"year":1998,"month":4,"day":9,"title":"麥加朝覲慘劇","type":1},{"year":1997,"month":4,"day":9,"title":"吳作人逝世","type":1},{"year":1997,"month":4,"day":9,"title":"國際商會三十二屆世界大會在滬舉行","type":1}],"error_code":0,"reason":"Succes"}    建立相應的javabean類。

二、程式碼部分

MainActivity.java類

<span style="font-size:18px;">package com.example.t22_09_jsontwo;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.google.gson.Gson;

public class MainActivity extends Activity {
	private HttpResponse httpResponse = null;
	private HttpEntity httpEntity = null;
	private Button bt;
	private EditText et1,et2;
	private TextView showtv;
	String sp;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);				
		bt=(Button) findViewById(R.id.subb);
		et1=(EditText) findViewById(R.id.yue);
		et2=(EditText) findViewById(R.id.ri);
		showtv=(TextView) findViewById(R.id.show);
		sp=GetStringURL();
		bt.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				new Thread(networkTask).start();	
				
			}
		});	
	}
	
	private String GetStringURL() {
		// TODO Auto-generated method stub
		String s="http://api.avatardata.cn/HistoryToday/LookUp?key=c43bdd056d034bf6be97e12993bf8362";
		String p="&type=1&page=1&rows=5";
		String n="&yue="+et1.getText().toString();
		String m="&ri="+et2.getText().toString();
		return s+n+m+p;
	}

	Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);
			Bundle data = msg.getData();
			String val = data.getString("value");								
			Log.i("mylog", "請求結果為:" + val);		
			Gson gson = new Gson();
			Aaa w = gson.fromJson(val, Aaa.class);	
			List<Bbb> bs=new ArrayList<Bbb>();
			bs=w.result;
			StringBuffer temp=new StringBuffer();
			for(int i=0;i<bs.size();i++)
			{   String s=bs.get(i).year+"年"+bs.get(i).month+"月 "+bs.get(i).day+"日 "+" 事件："+bs.get(i).title+"\n";
			   temp.append(s);
				//System.out.println(bs.get(i).month+"月 "+bs.get(i).day+"日 "+" 事件："+bs.get(i).title);
			}
			showtv.setText(temp);
		}
	};	
	Runnable networkTask = new Runnable() {
		@Override
		public void run() {					
			URI r=null;
		     sp=GetStringURL();		
				 try {
					r=new URI(sp);
				} catch (URISyntaxException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
			
			HttpGet httpGet = new HttpGet(r);
			// 生成一個Http客戶端物件
			HttpClient httpClient = new DefaultHttpClient();
			// 使用Http客戶端傳送請求物件
			InputStream inputStream = null;
			try {
				// 返回給我們的響應
				httpResponse = httpClient.execute(httpGet);
				// 發給我們的響應的內容
				httpEntity = httpResponse.getEntity();			
				inputStream = httpEntity.getContent();
				BufferedReader reader = new BufferedReader(
						new InputStreamReader(inputStream));
				String result = "";
				String line = "";
				while ((line = reader.readLine()) != null) {
					result = result + line;
				}				
				Message msg = new Message();
				Bundle data = new Bundle();
				data.putString("value", result);
				msg.setData(data);
				handler.sendMessage(msg);
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				try {
					inputStream.close();
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}
		
	};
}
</span>
 

<span style="font-size:18px;">package com.example.t22_09_jsontwo;

import java.util.List;

public class Aaa {
int total;
List<Bbb> result;
int error_code;
String reason;
}
</span>

<span style="font-size:18px;">package com.example.t22_09_jsontwo;

public class Bbb {
int year;
int month;
int day;
String title;
@Override
	public String toString() {
		// TODO Auto-generated method stub
		return year+"-"+month+"-"+title;
	}
}
</span>
 

<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <EditText
        android:id="@+id/yue"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="請輸入月份"
        android:inputType="text"       
        />
   <EditText
        android:id="@+id/ri"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="請輸入幾號"
        android:inputType="text"
        
        />
    <Button
        android:id="@+id/subb"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="獲取資料" />
 <TextView
     android:id="@+id/show"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:textColor="#FFA07A"
     android:textSize="20sp"
     android:layout_margin="10dp"
     />
</LinearLayout></span>

程式碼有點簡單粗暴  嘻嘻