let news = [{     id: '1234560',     title: '秋收秋种天气预报(第五期)',     poster: '1',     content: '一、天气预报 预计未来七天受冷空气影响，气温下降，高温缓解，天气前期以多云为主，局部有小雨，后期以晴天多云为主。具体预报如下： 7多云间阴；8日多云；9日阴天多云，部分有阵雨；10～13日晴天多云。 7日气温20～30℃；8日气温19～31℃；9～13日气温14～27℃。 二、农用天气预报     农用天气预报（1级为适宜，2级为较适宜，3级为不适宜）显示：病虫防控、农田施肥、水稻收获气象等级以1～2级为主，油菜播种气象等级以2～3级为主。',     add_date: '2022-10-06',     collect: 0   },  ]; 上面定义一个变量， /* 读新闻数据库 */   Getnews2: function() {     var that = this;     let news2 = [{       id: '',       title: '',       poster: '',       content: '123',       add_date: '',       collect: 0     }];           this.getDBPromise({        db_name: 'articel',       entity: {                    }     }).then(res => {       if (res.data.length > 0) { ｝ 从数据库读出值，赋值于 news news=res.data会出错，是什么原因？

var data10= new Array();  wx.getFileSystemManager().readFile({   //读取文件       filePath: res.tempFilePath,       encoding: 'utf-8',       success: res => {          console.log(res.data)         var temp_data10=res.data.split(",")         for (let i =0; i < 10; i++) {              data10[i]=temp_data10[i]                }    /*         that.setData({           temp_data: res.data.split(",")         })   */             },       fail: console.error     })  全局变量data10怎么读不到值？这个要怎么出来

[图片]   1、获取公众号信息，如上图显示“获取失败” //index.js //获取应用实例 const app = getApp() Page({   data: {     buttonDisabled: false,     modalHidden: true,     userInfo: {},     hasUserInfo: false,     canIUse: wx.canIUse('button.open-type.getUserInfo'),     gongMessage: [], //存储公众号所有信息     inputContent: '',     inputContentxml: '',     id:'',     lock: false,   },   //事件处理函数 登录日志   bindViewTap: function() {     wx.navigateTo({            })   },   //跳转文章页面   to_articel_list: function (event) {     //检查锁     if (this.data.lock) {       return;     }     var that = this;     var index = event.currentTarget.dataset.index;     var g_id = that.data.gongMessage[index].id     console.log("公众号id为:" + g_id)     wx.navigateTo({       url: '../../pages/artical/artical?g_id=' + g_id     })   },   touchend: function () {     var that = this;     if (that.data.lock) {       //开锁       console.log("离开")       that.setData({          lock: false        });     }   },   // 长按复制公众号名称   copy: function (event) {     //锁住     this.setData({ lock: true });     var that = this;     var index = event.currentTarget.dataset.index;     console.log(event);     wx.setClipboardData({       data: that.data.gongMessage[index].name,       success: function (res) {         wx.showToast({           title: '复制成功',         });       }     });   },   onLoad: function () {     var that = this;     // 如果获取到用户信息就存储     if (app.globalData.userInfo) {       this.setData({         userInfo: app.globalData.userInfo,         hasUserInfo: true       })       wx.setStorageSync('username', that.data.userInfo.nickName)       wx.setStorageSync('headpath', that.data.userInfo.avatarUrl)       console.log("在index页面全局app1中获取到的用户信息为：" + that.data.userInfo.nickName + " " + that.data.userInfo.avatarUrl);     } else if (this.data.canIUse){       // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回       // 所以此处加入 callback 以防止这种情况       app.userInfoReadyCallback = res => {         // console.log("用户名2：" + res.userInfo.nickName + " " + res.userInfo.avatarUrl)         // wx.setStorageSync('username', res.userInfo.nickName)         // wx.setStorageSync('headpath', res.userInfo.avatarUrl)         this.setData({           userInfo: res.userInfo,           hasUserInfo: true         })         wx.setStorageSync('username', that.data.userInfo.nickName)         wx.setStorageSync('headpath', that.data.userInfo.avatarUrl)         console.log("在index页面全局app2中获取到的用户信息为：" + that.data.userInfo.nickName + " " + that.data.userInfo.avatarUrl);       }     } else {       // 没有获取到用户信息就发起授权窗口       wx.getUserInfo({         success: res => {           // console.log("用户名3：" + res.userInfo.nickName + " " + res.userInfo.avatarUrl)           app.globalData.userInfo = res.userInfo           this.setData({             userInfo: res.userInfo,             hasUserInfo: true           })           wx.setStorageSync('username', that.data.userInfo.nickName)           wx.setStorageSync('headpath', that.data.userInfo.avatarUrl)           console.log("在index页面全局app3中获取到的用户信息为：" + that.data.userInfo.nickName + " " + that.data.userInfo.avatarUrl);         },       })     }   //   wx.setStorageSync('username', that.data.userInfo.nickName)   //   wx.setStorageSync('headpath', that.data.userInfo.avatarUrl)    //获取公众号信息     that.getGongInfo();   },   //点击按钮授权   getUserInfo: function (e) {     var that = this;     if (e.detail.userInfo) {       console.log(e)       app.globalData.userInfo = e.detail.userInfo       this.setData({         userInfo: e.detail.userInfo,         hasUserInfo: true       })       wx.setStorageSync('username', that.data.userInfo.nickName)       wx.setStorageSync('headpath', that.data.userInfo.avatarUrl)       console.log("在index页面临时授权中获取到的用户信息为：" + that.data.userInfo.nickName + " " + that.data.userInfo.avatarUrl);     } else {       console.log('用户取消授权');       return;     }   },   //获取公众号信息   getGongInfo: function () {     var that = this;     wx.request({      url: 'http://localhost:8080/my/index.jsp', // url: '自己服务器API', //获取公众号信息       data: {       },       header: {         'content-type': 'application/json' // 数据格式（默认值）       },       method: 'post', //上传方式       success: function (res) {   //回调成功         console.log(res.data.result)         if (res.statusCode == 200) {           if (res.data.result == '1') {             var posts_content = res.data;             console.log(posts_content)             that.setData({               gongMessage: res.data.content,             })           } else {             wx.showToast({               title: '获取失败',               icon: 'none',             })           }         } else {           wx.showModal({             title: '服务器错误',             content: 'none',           })         }       },       //回调失败       fail: function (res) {         console.log(res.errMsg)         wx.showToast({           title: '联网失败',           icon: 'fail',         })       },     })   },   //弹出回复框   showModal: function (event) {     this.setData({       modalHidden: !this.data.modalHidden,     })   },   // 获取弹出框密码   getInputContent: function (e) {     console.log(e.detail.value)     this.setData({       inputContent: e.detail.value     })   },   //确定   modalBindaconfirm: function () {     var that = this;     console.log(that.data.inputContent)     if (that.data.inputContent == "") {       wx.showToast({         title: '秘钥不能为空！',         icon: 'none',       })     } else {       //通过秘钥换取公众号 id       that.getIdentifyId();     }   },      //取消   modalBindcancel: function () {     this.setData({       modalHidden: !this.data.modalHidden,     })   },   //通过后台秘钥获取公众号 id   getIdentifyId: function () {     var that = this;     wx.request({       url: 'http://localhost:8080/my/index.jsp', //url: '自己服务器API', //获取公众号信息       data: {         password: that.data.inputContent //登录后台密码       },       header: {         'content-type': 'application/json' // 数据格式（默认值）       },       method: 'post', //上传方式       success: function (res) {   //回调成功         console.log(res.data)         if (res.statusCode == 200) {           if (res.data.result == '1') {               //弹出框消失               that.setData({                 modalHidden: !that.data.modalHidden,                 buttonDisabled: !that.data.buttonDisabled,                 id: res.data.content[0].id,               })             //上传openid               // that.postOpenid();              //跳转后台管理界面               wx.navigateTo({                 url: '../../pages/select/select?id=' + that.data.id + "&avatarUrl=" + that.data.userInfo.avatarUrl + "&nickName=" + that.data.userInfo.nickName + "&headpath=" + res.data.content[0].headpath + "&name=" + res.data.content[0].name + "&describe=" + res.data.content[0].describes               })           } else {             wx.showToast({               title: '你不是管理员或者密码错误',               icon: 'none',             })           }         } else {           wx.showModal({             title: '服务器错误',             content: 'none',           })         }       },       //回调失败       fail: function (res) {         console.log(res.errMsg)         wx.showToast({           title: '联网失败',           icon: 'fail',         })       },     })   },   // 上传管理员openid   postOpenid: function () {     var that = this;     wx.request({       url: 'http://localhost:8080/my/index.jsp', //url: '自己服务器API', //获取公众号信息       data: {         openid: wx.getStorageSync('openid'),         id: that.data.id       },       header: {         'content-type': 'application/json' // 数据格式（默认值）       },       method: 'post', //上传方式       success: function (res) {   //回调成功         console.log(res.data.result)         if (res.statusCode == 200) {           if (res.data.result == '1') {             console.log("openid加入成功！")           } else {             console.log("openid加入失败！")           }         } else {           wx.showModal({             title: '服务器错误',             content: 'none',           })         }       },       //回调失败       fail: function (res) {         console.log(res.errMsg)         wx.showToast({           title: '联网失败',           icon: 'fail',         })       },     })   },   //下拉刷新   onPullDownRefresh: function () {     var that = this;     //在标题栏中显示加载图标      wx.showNavigationBarLoading();      //获取公众号信息     that.getGongInfo();     //完成停止加载     wx.hideNavigationBarLoading();          //停止下拉刷新      wx.stopPullDownRefresh();              },   //wx.showNavigationBarLoading(); //在标题栏中显示加载图标    // wx.hideNavigationBarLoading();          //完成停止加载    // 动态设置导航条标题    // wx.stopPullDownRefresh();            //停止下拉刷新    //后天切换到前台调用 onShow   onShow:function () {      } }) app.js //app.js App({   onLaunch: function () {     // 展示本地存储能力     var logs = wx.getStorageSync('logs') || []     logs.unshift(Date.now())     wx.setStorageSync('logs', logs)     // 登录     //获取openid     var user = wx.getStorageSync('user') || {};     if (!user.openid || (user.expires_in || Date.now()) < (Date.now() + 600)) { //不要在30天后才更换openid-尽量提前 10 分钟更新       wx.login({         success: function (res) {           // success           // var d = that.globalData.wxData;//这里存储了appid、secret、token串           // var l = 'https://api.weixin.qq.com/sns/jscode2session?appid=' + d.appId + '&secret=' + d.appSecret + '&js_code=' + res.code + '&grant_type=authorization_code';http://192.168.43.205:8080           wx.request({             url: 'http://localhost:8080/my/index.jsp', //url: '自己服务器API',//获取唯一标识 openId             data: {               code: res.code             },             header: {               'content-type': 'application/json' // 数据格式（默认值）             },             method: 'post', //上传方式             success: function (res) {               console.log(res.data)               wx.setStorageSync('token', res.data.token)//消息模板会用到               wx.setStorageSync('openid', res.data.openid);//存储openid             }           });         }       });     } else {       wx.showToast({         title: '登录失败',         icon: 'none',       })       console.log(user);       return;     }     //查看当前用户是否已经授权     wx.getSetting({       success: res => {         if (res.authSetting['scope.userInfo']) {           // 已经授权，可以直接调用 getUserInfo 获取头像昵称，不会弹框           wx.getUserInfo({             success: res => {               // 授权成功后，直接将信息传到全局变量中               this.globalData.userInfo = res.userInfo               // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回               // 所以此处加入 callback 以防止这种情况               if (this.userInfoReadyCallback) {                 this.userInfoReadyCallback(res)               }             }           })         }else{           return;         }       }     })   },   globalData: {     userInfo: null   } }) 第二个bug见下图： [图片] 后台的代码见： AppIDCodeServlet.java package com.xiaolu.servlet; import java.io.BufferedReader; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.xiaolu.ThreadGetdata.TokenThread; import com.xiaolu.dao.Tools; import com.xiaolu.util.AccessTokenUtil; import net.sf.json.JSONObject; /**  * 功能:获取小程序的AppID和Code  * @author Boy Baby  *  */ @WebServlet("/AppIDCodeServlet") public class AppIDCodeServlet extends HttpServlet { private static final long serialVersionUID = 1L; public static final String appID = "wx1110d4dd4fdaddb92b"; // 填写你小程序的 APPid public static final String appScret = "4cc6811127335ae83325c4d40a75c1c3ab3";// 你小程序的 AppScret（微信小程序官网获取） public static String  openid = "";  public static String  token = "";              public AppIDCodeServlet() {         super();     } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //解决乱码 request.setCharacterEncoding("utf-8"); response.setContentType("text/html;charset=utf-8"); //启动定时获取access_token的线程 // new Thread(new TokenThread()).start();  //接受数据 StringBuffer sbJson = new StringBuffer(); String line = ""; try{ //读取网络传输过来的数据 BufferedReader br = request.getReader(); //遍历数据并拼接 while((line = br.readLine())!= null){ //如果读到数据,把他添加到字符流中   sbJson.append(line); } }catch (Exception e) { e.printStackTrace(); } System.out.println("client json data =" + sbJson);   // 功能:把读取到的数据封装 JSON System.out.println("JSON = "+ sbJson.toString()); JSONObject jsonobject = JSONObject.fromObject(sbJson.toString()); String code = jsonobject.getString("code");//js_code openid = AccessTokenUtil.getOpenid(appID, appScret,code);  token = TokenThread.access_token.getAccess_token(); System.out.println("微信API-openid:"+openid+ "token:" + token); if(!token.equals("")&&!openid.equals("")){ JSONObject jsonObject2 = new JSONObject(); jsonObject2.put("result", "1"); jsonObject2.put("openid", openid); jsonObject2.put("token", token); String str = jsonObject2.toString(); System.out.print("openid"+openid); response.getWriter().write(str); }else{ JSONObject jsonObject2 = new JSONObject(); jsonObject2.put("result", "0"); String str = jsonObject2.toString(); response.getWriter().write(str); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); }    }