google-http-java-client(android学习篇)

package com.example.android;

import java.io.IOException; import java.util.HashMap;

import android.app.Activity; import android.content.Intent;

import android.os.Bundle; import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button; import com.google.api.client.http.GenericUrl;

import com.google.api.client.http.HttpRequest;

import com.google.api.client.http.HttpRequestFactory;

import com.google.api.client.http.HttpRequestInitializer;

import com.google.api.client.http.HttpResponse;

import com.google.api.client.http.HttpTransport;

import com.google.api.client.http.UrlEncodedContent;

import com.google.api.client.http.javanet.NetHttpTransport;

import com.google.api.client.json.JsonFactory;

import com.google.api.client.json.JsonObjectParser;

import com.google.api.client.json.jackson.JacksonFactory;

import com.google.api.client.util.Key;

public class MainActivity extends Activity {  

public static Result result =null;    

public static class Result {   

@Key("Code") 

 private int code;  

 @Key("Data")  

 private ProductData data;

 public int getCode() {   

      return code;   }  

 public ProductData getData() {   

     return data;  

 }

 }  

 public static class ProductData {

  @Key("Total")  

   private int total;

  @Key("List")  

   private Product[] list;   

  public int getTotal() {    

     return total;   }  

 public Product[] getList() {   

     return list;  

 }  

}

 public static class Product {  

 @Key("id")   

private int id;

  @Key("title")   

private String title;   

  public int getId() {  

  return id;   }   

public String getTitle() {   

 return title;   }  }    

   Button btn = null;    

static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();// For Java: NetHttpTransport(HttpURLConnection ); For Android: AndroidHttp.  static final JsonFactory JSON_FACTORY = new JacksonFactory(); // For JSON converting.    

@Override    

public void onCreate(Bundle savedInstanceState) {        

super.onCreate(savedInstanceState);        

setContentView(R.layout.activity_main);        

btn = (Button)this.findViewById(R.id.btnacq);        

btn.setOnClickListener(new OnClickListener() {   

 @Override    

public void onClick(View v) {  

  test();   

  Intent intent = new Intent();   

 intent.setClass(MainActivity.this, Show.class);  

 intent.putExtra("code", result.getCode());//向下一个activity传入数值   

 intent.putExtra("data", result.getData().total); 

 intent.putExtra("list", result.getData().list);  

  startActivity(intent);    }   });     }    

public static void test() {   HttpRequestFactory requestFactory = HTTP_TRANSPORT.createRequestFactory(new HttpRequestInitializer() {

   @Override    

public void initialize(HttpRequest request) throws IOException {     request.setParser(new JsonObjectParser(JSON_FACTORY));    }       });   

  GenericUrl url = new GenericUrl("url"); // ps=20&pi=0&t=8&ti=1&catetag=[]&custag=[]&favtag=[]&name=   

HashMap<String, String> params = new HashMap<String, String>();  

 params.put("ps", "20");//ajax代码写的   params.put("pi", "0");  

 params.put("t", "8");   params.put("ti", "1");   params.put("catetag", "[]");  

 params.put("custag", "[]");   params.put("favtag", "[]");   params.put("name", "");  

 try {    HttpRequest request = requestFactory.buildPostRequest(url, new UrlEncodedContent(params));//请用post请求    

HttpResponse response = request.execute();      

result = response.parseAs(Result.class);//根据自己定义的的对象的get方法获取里面的值      

System.out.println(result);   

 System.out.println(result.getCode()+"-------"+result.getData());    System.out.println(result.getData().total+"----"+result.getData().list);   }

catch (IOException e) {    System.out.println("代码出错");   }

 }

}