公众号开发（二）----基础接口实现（自定义菜单增删改查）

首先，搭建好springBoot框架：

后面在WechatUtil里面调用微信公众平台接口，在IndexController里面写controller接口，自定义controller接口返回值：


package com.demo.wechat.domain;

public class Message {
	
	private Integer code;

	private Object msg;

	public Integer getCode() {
		return code;
	}

	public void setCode(Integer code) {
		this.code = code;
	}

	public Object getMsg() {
		return msg;
	}

	public void setMsg(Object msg) {
		this.msg = msg;
	}

	
	public static Message getSuccessfulRes(Object obj) {
		return new Message(Code.SUCCESS, obj);
	}

	/**
	 * @param code
	 * @param obj
	 */
	public Message(Integer code, Object obj) {
		super();
		this.code = code;
		this.msg = obj;
	}

	
}

微信公众平台的接口都是https请求，所以封装一个Https请求的 util:

package com.demo.wechat.util;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate; 
import javax.net.ssl.X509TrustManager; 
public class MyX509TrustManager implements X509TrustManager {
 
	@Override
	public void checkClientTrusted(X509Certificate[] chain, String authType)
			throws CertificateException {
	}
 
	@Override
	public void checkServerTrusted(X509Certificate[] chain, String authType)
			throws CertificateException {
	}
 
	@Override
	public X509Certificate[] getAcceptedIssuers() {
		return null;
	}
}

package com.demo.wechat.util;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import com.alibaba.fastjson.JSONObject;

public class HttpsUtil {
	/** 
     * 发起https请求并获取结果 增加3秒超时时间
     *  
     * @param requestUrl 请求地址 
     * @param requestMethod 请求方式（GET、POST） 
     * @param outputStr 提交的数据 ,json字符串
     * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) 
     */  
    public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {  
        JSONObject jsonObject = null;  
        StringBuffer buffer = new StringBuffer();  
        try {  
            // 创建SSLContext对象，并使用我们指定的信任管理器初始化  
            TrustManager[] tm = { new MyX509TrustManager() };  
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");  
            sslContext.init(null, tm, new java.security.SecureRandom());  
            // 从上述SSLContext对象中得到SSLSocketFactory对象  
            SSLSocketFactory ssf = sslContext.getSocketFactory();  
  
            URL url = new URL(requestUrl);
            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();  
            httpUrlConn.setSSLSocketFactory(ssf);  
  
            httpUrlConn.setDoOutput(true);  
            httpUrlConn.setDoInput(true);  
            httpUrlConn.setUseCaches(false);
            httpUrlConn.setConnectTimeout(3000);
            httpUrlConn.setReadTimeout(3000);
            // 设置请求方式（GET/POST）  
            httpUrlConn.setRequestMethod(requestMethod);  
  
            if ("GET".equalsIgnoreCase(requestMethod))  
                httpUrlConn.connect();  
  
            // 当有数据需要提交时  
            if (null != outputStr) {  
                OutputStream outputStream = httpUrlConn.getOutputStream();  
                // 注意编码格式，防止中文乱码  
                outputStream.write(outputStr.getBytes("UTF-8"));  
                outputStream.close();  
            }  
  
            // 将返回的输入流转换成字符串  
            InputStream inputStream = httpUrlConn.getInputStream();  
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");  
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);  
  
            String str = null;  
            while ((str = bufferedReader.readLine()) != null) {  
                buffer.append(str);  
            }  
            bufferedReader.close();  
            inputStreamReader.close();  
            // 释放资源  
            inputStream.close();  
            inputStream = null;  
            httpUrlConn.disconnect();  
            jsonObject = JSONObject.parseObject(buffer.toString());  
        } catch (ConnectException ce) {  
           System.out.println("Weixin server connection timed out.");  
        } catch (Exception e) {  
            System.out.println("https request error:{}"+e);  
        }  
        return jsonObject;  
    }
 
}

一、获取微信公众平台全局凭证access_token：

1、根据接口返回结果封装domain：

package com.demo.wechat.domain;
public class AccessToken{
	
	private String accessToken;
	
	private Long expiresIn;

	public String getAccessToken() {
		return accessToken;
	}

	public void setAccessToken(String accessToken) {
		this.accessToken = accessToken;
	}

	public Long getExpiresIn() {
		return expiresIn;
	}

	public void setExpiresIn(Long expiresIn) {
		this.expiresIn = expiresIn;
	}
	
	
}

2、自定义util：


package com.demo.wechat.util;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.demo.wechat.domain.AccessToken;
import com.demo.wechat.domain.WechatMenu;

public class WechatUtil {
	
	//获取access_token
	private static final String ACCESS_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";

	//获取access_token
	public static AccessToken getAccessToken(String appId,String appSecert){
		AccessToken accessToken = new AccessToken();
		String url = ACCESS_TOKEN_URL.replace("APPID", appId).replace("APPSECRET", appSecert);
		JSONObject res = HttpsUtil.httpRequest(url, "GET", null);
		String errcode = (String) res.get("errcode");
	    try{    	
			String token = (String) res.get("access_token");
			accessToken.setAccessToken(token);
			Long expiresIn = res.getLong("expires_in");
			accessToken.setExpiresIn(expiresIn);
		}catch (Exception e) {
			accessToken = null;
		}
		return accessToken;
	}
	
}

3、controller接口测试：


package com.demo.wechat.controller;

import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.alibaba.fastjson.JSON;
import com.demo.wechat.domain.AccessToken;
import com.demo.wechat.domain.Button;
import com.demo.wechat.domain.WechatMenu;
import com.demo.wechat.domain.Message;
import com.demo.wechat.util.WechatUtil;

@RequestMapping("/index")
@RestController
public class IndexController {

	@Value(value="${app.secret}")
	private String appSecert;
	
	@Value(value="${app.id}")
	private String appId;

	
	//获取access_token
	@RequestMapping("/getAccessToken")
	public String getAccessToken(){
		AccessToken accessToken = WechatUtil.getAccessToken(appId, appSecert);
		return JSON.toJSONString(Message.getSuccessfulRes(accessToken.getAccessToken()));
	}
	
}

postman请求成功：

二、自定义菜单创建接口：

1、官方文档数据：

根据数据格式封装domain，[]为数组，{}为对象：

（1）先封装最外面一层，为一个"button"数组：


package com.demo.wechat.domain;

import java.util.List;

public class WechatMenu {

	private List<Button> button;

	public List<Button> getButton() {
		return button;
	}

	public void setButton(List<Button> button) {
		this.button = button;
	}

	@Override
	public String toString() {
		return "WechatMenu [button=" + button + "]";
	}
	
	
}

（2）再封装里面一层，即数组里面的对象：


package com.demo.wechat.domain;

import java.util.List;

public class Button {

	private String type;
	
	private String name;
	
	private String key;
	
	private String url;
	
	private List<Button> sub_button;

    /**
     *省略get、set方法
    */

}

2、封装创建菜单util，WechatUtil添加：

//自定义创建菜单
	private static final String CREATE_MENU = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";

//自定义菜单
	public static  Integer createMenu(String appId,String appSecert,WechatMenu wechatMenu){
		AccessToken accessToken = getAccessToken(appId, appSecert);
		String url = CREATE_MENU.replace("ACCESS_TOKEN", accessToken.getAccessToken());
		
		JSONObject res = HttpsUtil.httpRequest(url, "POST", JSON.toJSONString(wechatMenu));
		return (Integer) res.get("errcode");
	}

3、controller接口：

//自定义菜单
	@RequestMapping("/createMenu")
	public String createMenu(){
		WechatMenu wechatMenu = new WechatMenu();
		List<Button> buttonList = new ArrayList<>();
		Button button1 = new Button();
		button1.setName("wtyy菜单1");		
		List<Button> subButtonList = new ArrayList<>();
		Button subButton1 = new Button();
		subButton1.setName("1的子菜单1");
		subButton1.setType("click");
		subButton1.setKey("key1");
		subButton1.setUrl("http://www.baidu.com");
		subButtonList.add(subButton1);
		button1.setSub_button(subButtonList );
		buttonList.add(button1);
		
		Button button2 = new Button();
		button2.setName("wtyy菜单2");
		button2.setType("click");
		button2.setKey("key2");
		buttonList.add(button2);
		
		wechatMenu.setButton(buttonList);
		System.out.println("菜单"+JSON.toJSONString(wechatMenu));
		Integer res = WechatUtil.createMenu(appId, appSecert, wechatMenu);
		return JSON.toJSONString(Message.getSuccessfulRes(res));
	}

postman调用：

请求成功后，打开微信公众号，可以看到多了几个菜单：

在这之前一直报40017 invalid button type的错误，我是创建两个菜单，一个包含了子菜单，一个不包含，一开始子菜单和父菜单都写了type类型，后来把父菜单的type去掉只保留子菜单的type就成功了。

三、自定义菜单查询接口：

//自定义查询菜单
	private static final String MENU_QUERY = "https://api.weixin.qq.com/cgi-bin/menu/get?access_token=ACCESS_TOKEN";
	
//自定义菜单查询
	public static String queryMenu(String appId,String appSecret){
		AccessToken accessToken = getAccessToken(appId, appSecret);
		String url = MENU_QUERY.replace("ACCESS_TOKEN", accessToken.getAccessToken());	
		JSONObject res = HttpsUtil.httpRequest(url, "GET", null);
		return res.toJSONString();
	}

//查询自定义菜单
	@RequestMapping("/queryMenu")
	public String queryMenu(){
		String res = WechatUtil.queryMenu(appId, appSecert);
		return JSON.toJSONString(Message.getSuccessfulRes(res));
	}

post请求结果：

四、自定义菜单删除接口：

//自定义菜单删除
private static final String MENU_DELETE = "https://api.weixin.qq.com/cgi-bin/menu/delete?access_token=ACCESS_TOKEN";
//自定义菜单删除
public static Integer deleteMenu(String appId,String appSecret){
		AccessToken accessToken = getAccessToken(appId, appSecret);
		String url = MENU_DELETE.replace("ACCESS_TOKEN", accessToken.getAccessToken());	
		JSONObject res = HttpsUtil.httpRequest(url, "GET", null);
		return (Integer) res.get("errcode");
	}

//删除自定义菜单
   @RequestMapping("/deleteMenu")
   public String deleteMenu(){
       Integer res = WechatUtil.deleteMenu(appId, appSecert);
       return JSON.toJSONString(Message.getSuccessfulRes(res));
   }

调用后会删除所有的菜单，删除后调用查询自定义菜单接口，返回结果如下：

公众号开发（二）----基础接口实现（自定义菜单增删改查）

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