完成前后端框架搭建，完成聊天页面布局

web/src/utils/http.js

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+import axios from 'axios'
+import JSONBigInt from 'json-bigint'
+import qs from 'qs'
+
+import { ElMessageBox } from 'element-plus'
+
+axios.defaults.timeout = 5000
+axios.defaults.baseURL = process.env.VUE_APP_API_SECURE === true ? 'https://' + process.env.VUE_APP_API_HOST : 'http://' + process.env.VUE_APP_API_HOST
+axios.defaults.withCredentials = true
+axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'
+axios.defaults.transformResponse = [(data, headers) => {
+  if (headers['content-type'].indexOf('application/json') !== -1) {
+    try {
+      data = JSONBigInt.parse(data)
+    } catch (e) { /* Ignore */ }
+  }
+  return data
+}]
+
+
+// HTTP拦截器
+axios.interceptors.request.use(
+  config => {
+    // set session-name
+    config.headers['Session-Name'] = "xwebssh-sess-token"
+    return config
+  }, error => {
+    return Promise.reject(error)
+  })
+axios.interceptors.response.use(
+  response => {
+    if (response.data.code == 0) {
+      return response
+    } else {
+      return Promise.reject(response.data)
+    }
+  }, error => {
+    if (error.response.status === 401) {
+      ElMessageBox.alert('您未登录或者登录已退出，请先登录再操作。', '登录提醒', {
+        confirmButtonText: '确定',
+        callback: () => {
+          // TODO: goto login page
+        },
+      })
+    }
+
+    if (error.response.status === 400) {
+      return Promise.reject(error.response.data)
+    }
+    return Promise.reject(error)
+  })
+
+
+// send a http get request
+export function httpGet (url, params = {}) {
+  return new Promise((resolve, reject) => {
+    axios.get(url, {
+      params: params
+    }).then(response => {
+      resolve(response.data)
+    }).catch(err => {
+      reject(err)
+    })
+  })
+}
+
+
+// send a http post request
+export function httpPost (url, data = {}, options = {}) {
+  return new Promise((resolve, reject) => {
+    axios.post(url, qs.stringify(data), options).then(response => {
+      resolve(response.data)
+    }).catch(err => {
+      reject(err)
+    })
+  })
+}

web/src/utils/libs.js

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+/**
+ * Util lib functions
+ */
+
+// generate a random string
+export function randString(length) {
+    const str = "0123456789abcdefghijklmnopqrstuvwxyz"
+    const size = str.length
+    let buf = []
+    for (let i = 0; i < length; i++) {
+        const rand = Math.random() * size
+        buf.push(str.charAt(rand))
+    }
+    return buf.join("")
+}

web/src/utils/prototype.js

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+// add prototype method for array to insert item
+Array.prototype.insert = function (index, item) {
+  this.splice(index, 0, item)
+}
+
+Array.prototype.remove = function (index) {
+  this.splice(index, 1)
+}

web/src/utils/storage.js

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+/* eslint-disable no-constant-condition */
+/**
+ * storage handler
+ */
+// import Storage from 'good-storage'
+
+