La quatrième étape du développement de l'API Java WeChat : mise en œuvre du menu personnalisé WeChat

package com.gist.utils;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
 
import javax.net.ssl.HttpsURLConnection;
 
import com.gist.bean.Access_token;
import com.google.gson.Gson;
 
/**
 * @author 高远</n> 邮箱：wgyscsf@163.com</n> 博客 http://blog.csdn.net/wgyscsf</n>
 *   编写时期 2016-4-7 下午5:44:33
 */
public class AccessTokenUtils {
 private static final long MAX_TIME = 7200 * 1000;// 微信允许最长Access_token有效时间（ms）
 private static final String TAG = "WeixinApiTest";// TAG
 private static final String APPID = "wx889b020b3666b0b8";// APPID
 private static final String SECERT = "6da7676bf394f0a9f15fbf06027856bb";// 秘钥
 
 /*
  * 该方法实现获取Access_token、保存并且只保存2小时Access_token。如果超过两个小时重新获取；如果没有超过两个小时，直接获取。该方法依赖
  * ：public static String getAccessToken()；
  * 
  * 思路:将获取到的Access_token和当前时间存储到file里，
  * 取出时判断当前时间和存储里面的记录的时间的时间差，如果大于MAX_TIME,重新获取，并且将获取到的存储到file替换原来的内容
  * ，如果小于MAX_TIME，直接获取。
  */
 // 为了调用不抛异常，这里全部捕捉异常，代码有点长
 public static String getSavedAccess_token() {
  Gson gson = new Gson();// 第三方jar,处理json和bean的转换
  String mAccess_token = null;// 需要获取的Access_token；
  FileOutputStream fos = null;// 输出流
  FileInputStream fis = null;// 输入流
  File file = new File("temp_access_token.temp");// Access_token保存的位置
  try {
   // 如果文件不存在，创建
   if (!file.exists()) {
    file.createNewFile();
   }
  } catch (Exception e1) {
   e1.printStackTrace();
  }
  // 如果文件大小等于0，说明第一次使用，存入Access_token
  if (file.length() == 0) {
   try {
    mAccess_token = getAccessToken();// 获取AccessToken
    Access_token at = new Access_token();
    at.setAccess_token(mAccess_token);
    at.setExpires_in(System.currentTimeMillis() + "");// 设置存入时间
    String json = gson.toJson(at);
    fos = new FileOutputStream(file, false);// 不允许追加
    fos.write((json).getBytes());// 将AccessToken和当前时间存入文件
    fos.close();
    return mAccess_token;
   } catch (Exception e) {
    e.printStackTrace();
   }
  } else {
   // 读取文件内容
   byte[] b = new byte[2048];
   int len = 0;
   try {
    fis = new FileInputStream(file);
    len = fis.read(b);
   } catch (IOException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   }
   String mJsonAccess_token = new String(b, 0, len);// 读取到的文件内容
   Access_token access_token = gson.fromJson(mJsonAccess_token,
     new Access_token().getClass());
   if (access_token.getExpires_in() != null) {
    long saveTime = Long.parseLong(access_token.getExpires_in());
    long nowTime = System.currentTimeMillis();
    long remianTime = nowTime - saveTime;
    // System.out.println(TAG + "时间差：" + remianTime + "ms");
    if (remianTime < MAX_TIME) {
     Access_token at = gson.fromJson(mJsonAccess_token,
       new Access_token().getClass());
     mAccess_token = at.getAccess_token();
     return mAccess_token;
    } else {
     mAccess_token = getAccessToken();
     Access_token at = new Access_token();
     at.setAccess_token(mAccess_token);
     at.setExpires_in(System.currentTimeMillis() + "");
     String json = gson.toJson(at);
     try {
      fos = new FileOutputStream(file, false);// 不允许追加
      fos.write((json).getBytes());
      fos.close();
     } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     }
     return mAccess_token;
    }
 
   } else {
    return null;
   }
  }
 
  return mAccess_token;
 }
 
 /*
  * 获取微信服务器AccessToken。该部分和getAccess_token() 一致，不再加注释
  */
 public static String getAccessToken() {
  String urlString = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="
    + APPID + "&secret=" + SECERT;
  String reslut = null;
  try {
   URL reqURL = new URL(urlString);
   HttpsURLConnection httpsConn = (HttpsURLConnection) reqURL
     .openConnection();
   InputStreamReader isr = new InputStreamReader(
     httpsConn.getInputStream());
   char[] chars = new char[1024];
   reslut = "";
   int len;
   while ((len = isr.read(chars)) != -1) {
    reslut += new String(chars, 0, len);
   }
   isr.close();
  } catch (IOException e) {
 
   e.printStackTrace();
  }
  Gson gson = new Gson();
  Access_token access_token = gson.fromJson(reslut,
    new Access_token().getClass());
  if (access_token.getAccess_token() != null) {
   return access_token.getAccess_token();
  } else {
   return null;
  }
 }
}

{
 "button":[
 { 
  "type":"click",
  "name":"今日歌曲",
  "key":"V1001_TODAY_MUSIC"
 },
 {
  "name":"菜单",
  "sub_button":[
  { 
   "type":"view",
   "name":"搜索",
   "url":"http://www.soso.com/"
  },
  {
   "type":"view",
   "name":"视频",
   "url":"http://v.qq.com/"
  },
  {
   "type":"click",
   "name":"赞一下我们",
   "key":"V1001_GOOD"
  }]
 }]
}

//按钮基类
public class BaseButton {
 private String type;
 private String name;
 private String key;
 private String url;
 private String media_id;
} 
//子按钮
public class SonButton extends BaseButton {
 private String sub_button;
}
//父按钮
public class FatherButton extends BaseButton {
private String button;//可能直接一个父按钮做响应
@SerializedName("sub_button")//为了保证Gson解析后子按钮的名字是“sub_button”，具体用法请搜索
private List<SonButton> sonButtons;//可能有多个子按钮
}
 
public class Menu {
@SerializedName("button")
private List<FatherButton> fatherButtons;
}

//匹配的json对应的json
public class MatchRule {
private String group_id;
private String sex;
private String client_platform_type;
private String country;
private String province;
private String city;
private String language;
}
 
//修改Menu.java
public class Menu {
@SerializedName("button")
private List<FatherButton> fatherButtons;
private MatchRule matchrule;
}

/*
 * 创建自定义菜单。
 */
@Test
public void createCommMenu() {
 String ACCESS_TOKEN = AccessTokenUtils.getAccessToken();// 获取AccessToken，AccessTokenUtils是封装好的类
 // 拼接api要求的httpsurl链接
 String urlString = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token="
   + ACCESS_TOKEN;
 try {
  // 创建一个url
  URL reqURL = new URL(urlString);
  // 拿取链接
  HttpsURLConnection httpsConn = (HttpsURLConnection) reqURL
    .openConnection();
  httpsConn.setDoOutput(true);
  // 取得该连接的输出流，以读取响应内容
  OutputStreamWriter osr = new OutputStreamWriter(
    httpsConn.getOutputStream());
  osr.write(getMenuJson());// 使用本类外部方法getMenuJson()
  osr.close();
 
  // 返回结果
  InputStreamReader isr = new InputStreamReader(
    httpsConn.getInputStream());
  // 读取服务器的响应内容并显示
  char[] chars = new char[1024];
  String reslut = "";
  int len;
  while ((len = isr.read(chars)) != -1) {
   reslut += new String(chars, 0, len);
  }
  System.out.println("返回结果:" + reslut);
  isr.close();
 } catch (IOException e) {
  e.printStackTrace();
 }
}
 
public String getMenuJson() {
 Gson gson = new Gson();// json处理工具
 
 Menu menu = new Menu();// 菜单类
 List<FatherButton> fatherButtons = new ArrayList<FatherButton>();// 菜单中的父按钮集合
 // -----------
 // 父按钮1
 FatherButton fb1 = new FatherButton();
 fb1.setName("click");
 fb1.setType("click");
 fb1.setKey("10");
 // -------------
 // 父按钮2
 FatherButton fb2 = new FatherButton();
 fb2.setName("父按钮2");
 List<SonButton> sonButtons2 = new ArrayList<SonButton>();// 子按钮的集合
 
 // 子按钮2-1
 SonButton sb21 = new SonButton();
 sb21.setName("view");
 sb21.setUrl("http://www.baidu.com");
 sb21.setType("view");
 // 子按钮2-2
 SonButton sb22 = new SonButton();
 sb22.setName("scancode_push");
 sb22.setType("scancode_push");
 sb22.setKey("22");
 // 子按钮2-3
 SonButton sb23 = new SonButton();
 sb23.setName("scancode_waitmsg");
 sb23.setType("scancode_waitmsg");
 sb23.setKey("23");
 // 子按钮2-4
 SonButton sb24 = new SonButton();
 sb24.setName("pic_sysphoto");
 sb24.setType("pic_sysphoto");
 sb24.setKey("24");
 // 子按钮2-5
 SonButton sb25 = new SonButton();
 sb25.setName("pic_photo_or_album");
 sb25.setType("pic_photo_or_album");
 sb25.setKey("25");
 
 // 添加子按钮到子按钮集合
 sonButtons2.add(sb21);
 sonButtons2.add(sb22);
 sonButtons2.add(sb23);
 sonButtons2.add(sb24);
 sonButtons2.add(sb25);
 
 // 将子按钮放到2-0父按钮集合
 fb2.setSonButtons(sonButtons2);
 
 // ------------------
 // 父按钮3
 FatherButton fb3 = new FatherButton();
 fb3.setName("父按钮3");
 List<SonButton> sonButtons3 = new ArrayList<SonButton>();
 
 // 子按钮3-1
 SonButton sb31 = new SonButton();
 sb31.setName("pic_weixin");
 sb31.setType("pic_weixin");
 sb31.setKey("31");
 // 子按钮3-2
 SonButton sb32 = new SonButton();
 sb32.setName("locatselect");
 sb32.setType("location_select");
 sb32.setKey("32");
 // // 子按钮3-3-->测试不了，因为要media_id。这需要调用素材id.
 // SonButton sb33 = new SonButton();
 // sb33.setName("media_id");
 // sb33.setType("media_id");
 // sb33.setMedia_id("???");
 // // 子按钮3-4-->测试不了，因为要media_id。这需要调用素材id.
 // SonButton sb34 = new SonButton();
 // sb34.setName("view_limited");
 // sb34.setType("view_limited");
 // sb34.setMedia_id("???");
 
 // 添加子按钮到子按钮队列
 sonButtons3.add(sb31);
 sonButtons3.add(sb32);
 // sonButtons3.add(sb33);
 // sonButtons3.add(sb34);
 
 // 将子按钮放到3-0父按钮队列
 fb3.setSonButtons(sonButtons3);
 // ---------------------
 
 // 将父按钮加入到父按钮集合
 fatherButtons.add(fb1);
 fatherButtons.add(fb2);
 fatherButtons.add(fb3);
 
 // 将父按钮队列加入到菜单栏
 menu.setFatherButtons(fatherButtons);
 String json = gson.toJson(menu);
 System.out.println(json);// 测试输出
 return json;
 
}

// 拼接api要求的httpsurl链接
String urlString = "https://api.weixin.qq.com/cgi-bin/menu/addconditional?access_token="
   + ACCESS_TOKEN;

// -----
// 从此处开始设置个性菜单
MatchRule matchrule = new MatchRule();
matchrule.setSex("2");// 男生
menu.setMatchrule(matchrule);
// ----