update：修改打印的方法

App.vue

@@ -6,6 +6,10 @@ export default {
     plus.screen.lockOrientation('landscape-primary');
     // #endif
   },
+  //把想要全局的数据放在globalData对象里，globalData是uniapp的不可以自定义命名。
+	globalData:{
+    printSocket:null
+	},
   onShow: function () {},
   onHide: function () {}
 };

pages/index/index.vue

@@ -135,6 +135,7 @@ export default {
     };
   },
   created() {
+    this.createSocket()
     uni.$on('switchTab', (indexCode) => {
       this.tabIndex = indexCode;
     });
@@ -238,8 +239,11 @@ export default {
               this.$u.api.getUserPrintInfo().then((res) => {
                 // console.log(res, 'res888')
                 if (res.code === 200) {
-                  this.$u.vuex('vuex_printerHostUrl', 'http://' + res.data.printerIp + ':' + res.data.printerPort);
-                  this.$u.vuex('vuex_printerName', res.data.printerName);
+                  this.$u.vuex('vuex_printerInfo', {
+                    hostUrl:'http://'+ res.data.printerIp +':'+ res.data.printerPort,
+                    printerName: res.data.printerName
+                  });
+                  this.createSocket()
                 }
               });
               this.getPrint();

pages/mes/prodReport/index.vue

@@ -1534,8 +1534,12 @@ export default {
       this.printTemplateData.printTemplate = this.$refs.printTemplateRef.tableSelectData[0].name
       this.printTemplateVisible = false
     },
-    doFeedback() {
+    async doFeedback() {
       // this.reset();
+      if (!this.vuex_printConnect) {
+        this.$u.toast('打印机连接失败');
+        return
+      }
       this.feedbackForms = [];
       this.tableSelectData.forEach((item) => {
         let defQualify = item.quantity-item.quantityQualify-item.quantityUnqualify;

pages/sys/login/login.vue

@@ -86,8 +86,11 @@
 								this.$u.api.getUserPrintInfo().then(res=> {
 									// console.log(res, 'res888')
 									if (res.code === 200) {
-										this.$u.vuex('vuex_printerHostUrl', 'http://'+ res.data.printerIp +':'+ res.data.printerPort);
-										this.$u.vuex('vuex_printerName', res.data.printerName);
+										this.$u.vuex('vuex_printerInfo', {
+                      hostUrl:'http://'+ res.data.printerIp +':'+ res.data.printerPort,
+											printerName: res.data.printerName
+										});
+										this.createSocket()
 									}
 								})
 					  		setTimeout(() => {

store/$u.mixin.js

@@ -26,8 +26,6 @@ module.exports = {
   },
   data() {
     return {
-      pdfSocket: null,
-      socketConnect: false,
     }
   },
   computed: {
@@ -35,66 +33,61 @@ module.exports = {
     ...mapState($uStoreKey)
   },
   methods: {
-    createSocket(params) {
-      this.pdfSocket = io(this.vuex_printerHostUrl, {
+    createSocket() {
+      this.$u.vuex('vuex_printConnect', false)
+      let socket = io(this.vuex_printerInfo.hostUrl, {
         transports: ['websocket'],
         auth: {
           token: 'Bearer ' + this.vuex_token, // 在此处填入你 client 设置的 token，缺省可留空
         },
       });
-      this.pdfSocket.on('connect', () => {
-        this.socketConnect = true;
-        // console.log('连接成功444');
-        this.printPdfSocket(params)
+      
+      socket.on('connect', () => {
+        console.log('连接成功444');
         // TODO: Do something for your project
+        this.$u.vuex('vuex_printConnect', true);
+        // console.log(this.vuex_printConnect, 'vuex_printConnect');
       });
-      this.pdfSocket.on('clients', (clients) => {
-        this.socketConnect = clients;
+      socket.on('clients', (clients) => {
         console.log(clients, 'clients');
       });
-      this.pdfSocket.on('printerList', (printerList) => {
+      socket.on('printerList', (printerList) => {
         // globalThis.printerList = printerList;
         // console.log(printerList, 'printerList');
       });
-      this.pdfSocket.on("success", (res) => {
-        console.log(res, '打印成功')
-      })
-
-      this.pdfSocket.on("error", (res) => {
-        console.log(res, '打印失败')
-      })
-      this.pdfSocket.on("disconnect", () => {
-        this.socketConnect = false;
-        console.log('打印机断开')
-      })
-      setTimeout(() => {
-        if (!this.socketConnect) {
-          console.log('连接失败')
-          this.$u.toast('打印机连接失败')
-        }
-      }, 1000)
-
+      socket.on('success', (res) => {
+        console.log(res, '打印成功');
+      });
 
+      socket.on('error', (res) => {
+        console.log(res, '打印失败');
+      });
+      socket.on('disconnect', () => {
+        console.log('打印机断开');
+        this.$u.vuex('vuex_printConnect', false);
+      });
+      getApp().globalData.printSocket = socket
     },
-    printPdfSocket(params) {
-      // console.log(this.pdfSocket, 'pdfSocket')
-      if (!this.socketConnect) {
-        this.createSocket(params)
-        return
+    async printPdfSocket(params) {
+      if (!this.vuex_printerInfo.hostUrl) {
+        this.$u.toast('请绑定打印机');
+        return;
       }
-      this.$u.api
-        .getPrintDown(params)
-        .then((res) => {
+      if (this.vuex_printConnect) {
+        this.$u.api.getPrintDown(params).then((res) => {
           if (res.code === 200) {
-            this.pdfSocket.emit('news', {
+            getApp().globalData.printSocket.emit('news', {
               client: null,
-              printer: this.vuex_printerName,
+              printer: this.vuex_printerInfo.printerName,
               type: 'url_pdf',
               // pdf_path: 'http://192.168.3.91:8082/static/123.pdf',
               pdf_path: res.fileUrl,
             });
           }
         });
+      } else {
+        this.$u.toast('打印机连接失败');
+      }
     }
   }
 }
\ No newline at end of file

store/index.js

@@ -16,8 +16,16 @@ try {
 }
 
 // 需要永久存储，且下次APP启动需要取出的，在state中的变量名
-let saveStateKeys = ['vuex_user', 'vuex_token', 'vuex_remember', 'vuex_locale', 'vuex_isAgent', 'vuex_workstation',
-  'vuex_task', 'vuex_printerHostUrl', 'vuex_printerName'
+let saveStateKeys = [
+  'vuex_user',
+  'vuex_token',
+  'vuex_remember',
+  'vuex_locale',
+  'vuex_isAgent',
+  'vuex_workstation',
+  'vuex_task',
+  'vuex_printerInfo',
+  'vuex_printConnect',
 ];
 
 // 保存变量到本地存储中
@@ -38,9 +46,11 @@ const store = new Vuex.Store({
   state: {
     // 如果上面从本地获取的lifeData对象下有对应的属性，就赋值给state中对应的变量
     // 加上vuex_前缀，是防止变量名冲突，也让人一目了然
-    vuex_user: lifeData.vuex_user ? lifeData.vuex_user : {
-      userName: 'Aidex'
-    },
+    vuex_user: lifeData.vuex_user
+      ? lifeData.vuex_user
+      : {
+          userName: 'Aidex',
+        },
     vuex_token: lifeData.vuex_token ? lifeData.vuex_token : '',
     vuex_remember: lifeData.vuex_remember ? lifeData.vuex_remember : '',
     vuex_locale: lifeData.vuex_locale ? lifeData.vuex_locale : '',
@@ -53,10 +63,14 @@ const store = new Vuex.Store({
     vuex_workunit: null,
     //当前工作站正在进行的生产任务
     vuex_task: null,
-    // 打印机服务器地址
-    vuex_printerHostUrl: lifeData.vuex_printerHostUrl ? lifeData.vuex_printerHostUrl : '',
-    // 打印机名称s
-    vuex_printerName: lifeData.vuex_printerName ? lifeData.vuex_printerName : '',
+    // 打印机服务器信息
+    vuex_printerInfo: lifeData.vuex_printerInfo
+      ? lifeData.vuex_printerInfo
+      : '',
+    // 存打印状态
+    vuex_printConnect: lifeData.vuex_printConnect
+      ? lifeData.vuex_printConnect
+      : '',
 
     // 自定义tabbar数据
     // vuex_tabbar: [{
@@ -99,9 +113,9 @@ const store = new Vuex.Store({
         saveKey = payload.name;
       }
       // 保存变量到本地，见顶部函数定义
-      saveLifeData(saveKey, state[saveKey])
-    }
-  }
-})
+      saveLifeData(saveKey, state[saveKey]);
+    },
+  },
+});
 
 export default store
\ No newline at end of file