2-2 access_token的获取（上）

https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140183

 

 

到 https://mp.weixin.qq.com/advanced/advanced?action=dev&t=advanced/dev&token=1470128375&lang=zh_CN

获取：AppID AppSecret

点击 启用

会跳出：

 

手机扫码确认

 

 

 

电脑端有要干什么？

 

 

当执行 /Weixin/src/com/imooc/test/WeixinTest.java

获取票据的时候，一定要把开发电脑的ip添加到白名单 ，不然就报错

 

 

/Weixin/src/com/imooc/po/AccessToken.java

package com.imooc.po;

public class AccessToken {
	private String token;
	private int expiresIn;
	public String getToken() {
		return token;
	}
	public void setToken(String token) {
		this.token = token;
	}
	public int getExpiresIn() {
		return expiresIn;
	}
	public void setExpiresIn(int expiresIn) {
		this.expiresIn = expiresIn;
	}
	
	
}

/Weixin/src/com/imooc/util/WeixinUtil.java

package com.imooc.util;

import java.io.IOException;


import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import com.imooc.po.AccessToken;

import net.sf.json.JSONObject;

public class WeixinUtil {

	private static final String APPID = "wx3041db7fcb232fd7";
	private static final String APPSECRET = "b2e7836bb3362339bd168d66d436cb7";
	private static final String ACCESS_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
	
	
	public static JSONObject doGetStr(String url){
		DefaultHttpClient httpClient = new DefaultHttpClient();
		HttpGet httpGet = new HttpGet(url);
		JSONObject jsonObject = null;
		
		 try {
			 
			HttpResponse response = httpClient.execute(httpGet);
			HttpEntity entity = response.getEntity();
			
			if(entity != null){
				String result = EntityUtils.toString(entity,"UTF-8");
				jsonObject  = JSONObject.fromObject(result);
			}
		 
		 } catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		 return jsonObject;
	}
	
	
	public static JSONObject doPostStr(String url,String outStr){
		DefaultHttpClient httpClient = new DefaultHttpClient();
		HttpPost httpPost = new HttpPost(url);
		JSONObject jsonObject = null;
		
		try {
			 httpPost.setEntity(new StringEntity(outStr,"UTF-8"));
			 HttpResponse response = httpClient.execute(httpPost);
			 String result = EntityUtils.toString(response.getEntity(),"UTF-8");
			 jsonObject = JSONObject.fromObject(result);

		} catch (Exception e) {
			e.printStackTrace();
		}
		return jsonObject;
	}
	
	/**
	 * 获取 access_token
	 * @return
	 */
	public static AccessToken getAccessToken(){
		AccessToken token = new AccessToken();
		String url = ACCESS_TOKEN_URL.replace("APPID", APPID).replace("APPSECRET", APPSECRET);
		JSONObject jsonObject = doGetStr(url);
		if(jsonObject != null){
			token.setToken(jsonObject.getString("access_token"));
			token.setExpiresIn(jsonObject.getInt("expires_in"));
		}
		return token;
	}
	
}

 

/Weixin/src/com/imooc/test/WeixinTest.java

package com.imooc.test;

import com.imooc.po.AccessToken;
import com.imooc.util.WeixinUtil;

public class WeixinTest {

	public static void main(String[] args) {
		AccessToken token = WeixinUtil.getAccessToken();
		System.out.println("票据："+token.getToken());
		System.out.println("有效时间："+token.getExpiresIn());
	}
}

// 第一次获取的
//票据：12_kFXPkJ3GTDemDskOwVe2EX-qoDztAUl4sTNRI5sxbEmS-TkpJ7Z80lTJueFnXb3xRDpqSNd6jeKTyBecdHGOveGtHnihS3zULr8i7DQXH9TwVrDAvoM-WYyd3njM8J_Tbf1-VWeOBYk6qpjhHOCiAFAXE
//有效时间：7200