• Login.vue元件製作
  • 1.在components資料夾中新建Login.vue，並建立vue預設樣式
  • 2.在router資料夾中的index.js修改路由
  • 3.Login程式碼
  • 4.部分程式碼解釋及元件介紹
    • el-from

Login.vue元件製作

1.在components資料夾中新建Login.vue，並建立vue預設樣式

2.在router資料夾中的index.js修改路由

1. 首先匯入Login元件
   import Login from '../components/Login.vue'
2. 修改路由重定向至Login介面

const routes = [{
  path: '/',
  redirect: '/login',
},{
  path: '/login',
  name: '/login',
  component: Login,
}
]
 

3.Login程式碼

<template>
  <div class="login_bg">
    <div class="login_box">
      <!-- LOGO -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表單 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        class="login_form"
      >
        <!-- 使用者名稱 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="el-icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密碼 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="el-icon-lock"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按鈕 -->
        <el-form-item class="btns">
          <el-button type="primary" plain @click="login">登入</el-button>
          <el-button type="primary" plain @click="resetLoginForm"
            >重置</el-button
          >
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      loginForm: {
        username: "admin",
        password: "admin",
        msg: "", // 接收資料
      },
      loginList: {},
      loginFormRules: {
        // 驗證使用者名稱是否合法
        username: [
          { required: true, message: "請輸入賬號", trigger: "blur" },
          { min: 3, max: 5, message: "長度在 3 到 10 個字元", trigger: "blur" },
        ],
        // 驗證密碼是否合法
        password: [
          { required: true, message: "請輸入密碼", trigger: "blur" },
          { min: 3, max: 5, message: "長度在 3 到 10 個字元", trigger: "blur" },
        ],
      },
    };
  },
  created() {},
  methods: {
    // 點選重置按鈕
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      // 重置Cookie
      this.$cookies.remove("user_id");
      this.$cookies.remove("username");
      this.$cookies.remove("token");
      this.$cookies.remove("role_name");
      this.$cookies.remove("rightsList");
      this.$axios
        .post(this.HOST + "/api/login", {
          username: this.loginForm.username,
          password: this.loginForm.password,
        })
        .then((result) => {
          this.status = result.data.status;
          if (this.status === 200) {
            this.$message.success("登入成功！");
            this.loginList = result.data.data;
            this.$cookies.set("user_id", result.data.user_id, {
              expires: 7,
            });
            this.$cookies.set("username", result.data.username, {
              expires: 7,
            });
            this.$cookies.set("token", result.data.token, {
              expires: 7,
            });
            this.$cookies.set("role_name", result.data.role_name, {
              expires: 7,
            });
            this.addUserLogin();
            this.$router.push("/home");
          } else if(this.status === 404){
            this.$message.error("無此使用者！");
          } else if(this.status === 403){
            this.$message.error("該使用者被禁用！");
          } else {
            this.$message.error("密碼錯誤！");
          }
        })
        .catch((err) => {
          console.log(err);
        });
    },
    // 記錄使用者登入時間
    addUserLogin() {
      this.user_id = this.$cookies.get("user_id");
      this.$axios
        .post(this.HOST + "/api/addUserLogin", {
          user_id: this.user_id,
        })
        .then((result) => {
          this.status = result.data.status;
          if (this.status === 200) {
            this.$message.success("記錄使用者登入時間成功");
          } else {
            this.$message.error("記錄使用者登入時間失敗");
          }
        })
        .catch((error) => {
          console.log(error);
        });
    },
  },
};
</script>

<style lang="less" scoped>
.login_bg {
  background: url('../assets/bg.jpg')  fixed 100%;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
 

4.部分程式碼解釋及元件介紹

el-from

<el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        class="login_form"
      >
</el-form>

• ref 繫結控制元件，$refs 獲取控制元件,methods 裡就可以用
  this.refs.loginFormRef.validate((valid) => {}
• :model 動態繫結loginForm表單
• :rules 動態繫結驗證規則,通過loginFormRules屬性傳入約定的驗證規則
• class 繫結樣式