spring boot + vue + element-ui全栈开发入门——前端编辑数据对话框

 需求

---

1.点击“添加”按钮，弹出录入数据的对话框窗口，并录入数据，如果数据有误则不允许提交。数据填写完毕后，点击“保存”按钮，调用http协议提交数据，提交完毕刷新页面数据。点击“取消”按钮关闭对话框。

2.点击列表中的“修改”按钮，弹出数据修改对话框窗口，功能同上。

3.点击列表中的“删除”按钮，弹出删除数据的询问窗口，功能以此类推。

一、添加

---

在“src\mock\member.js”中，增加模拟保存数据的方法：

adapters.push(
  (mockAdapter) => mockAdapter.onPost('/api/member/save').reply(req => {
    let promise = new Promise((resolve, reject) => {
      let data = req.data ? JSON.parse(req.data) : {}
      let result = {}
      if (data.name) {
        result.success = true
        result.message = '保存成功'
      } else {
        result.success = false
        result.message = '姓名是必填参数'
      }

      setTimeout(() => {
        resolve([200, result])
      }, 2000)
    })
    return promise
  })
)

在src\pages\Member.vue中编写添加相关的代码：

对话框的布局：

  <!--对话框-->
  <el-dialog :title="form && form.id ? '编辑' : '新增' " :visible.sync="formVisible" :close-on-click-modal="false">
    <el-form :model="form" label-width="100px" :rules="rules" ref="form">
      <el-form-item label="姓名" prop="name">
        <el-input v-model="form.name" />
      </el-form-item>
      <el-form-item label="性别" prop="sex">
        <el-radio-group v-model="form.sex">
          <el-radio :label="1">男</el-radio>
          <el-radio :label="2">女</el-radio>
        </el-radio-group>
      </el-form-item>
    </el-form>
    <div slot="footer" class="dialog-footer">
      <el-button @click.native="formVisible = false">取消</el-button>
      <el-button type="primary" @click.native="handleSubmit" :loading="formLoading">提交</el-button>
    </div>
  </el-dialog>

保存按钮的代码：

let handleSubmit = function() {
  if (this.formLoading)
    return

  this.$refs.form.validate(valid => {
    if (!valid)
      return

    this.formLoading = true

    //调用http协议
    this.$axios.post('/api/member/save', this.form).then(res => {
      this.formLoading = false
      if (!res.data.success) {
        this.$message({
          showClose: true,
          message: res.data.message,
          type: 'error'
        });
        return
      }
      this.$message({
        type: 'success',
        message: '保存成功!'
      })

      //重新载入数据
      this.page = 1
      this.getRows()
      this.formVisible = false
    }).catch(e => this.formLoading = false)
  })
}

二、修改

---

如果完成添加功能，那么修改的功能就非常简单，只需要把handleEdit方法修改为：

let handleEdit = function(index, row) {
  this.form = Object.assign({}, row)
  this.formVisible = true
}

注意的是：千万不要直接给form赋row的值，因为这样做的话，如果修改了数据但没有保存，关闭窗口的时候，列表中的数据会被误修改。Object.assign是克隆row的值，这样，form对象就是一个副本，怎么修改都没问题。

三、删除

---

在“src\mock\member.js”中，增加模拟删除数据的方法：

adapters.push(
  (mockAdapter) => mockAdapter.onGet(/\/api\/member\/remove\/\w+/).reply(req => {
    let promise = new Promise((resolve, reject) => {
      let result = {
        success: true,
        message: '删除成功'
      }
      setTimeout(() => {
        resolve([200, result])
      }, 2000)
    })
    return promise
  })
)

handleDelete的方法修改为：

let handleDelete = function(index, row) {
  if (this.pageLoading)
    return

  this.$confirm('此操作将永久删除该数据, 是否继续?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(() => {
    this.pageLoading = true
    this.$axios.get('/api/member/remove/' + row.id).then(res => {
      this.pageLoading = false
      if (!res.data.success) {
        this.$message({
          type: 'error',
          message: res.data.message
        })
        return
      }
      this.$message({
        type: 'success',
        message: '删除成功!'
      })
      this.page = 1
      this.getRows()
    }).catch(e => this.pageLoading = false)
  }).catch(e => {})
}

完整的代码如下：

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'

Vue.config.productionTip = false

import 'font-awesome/css/font-awesome.min.css'

import ElementUI from 'element-ui'
import './assets/theme/element-#0b0a3e/index.css'
Vue.use(ElementUI)

//开发模式开启mock.js
if (process.env.NODE_ENV === 'development') {
  require('./mock')
}

import axios from 'axios'
Vue.prototype.$axios = axios

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  components: {
    App
  },
  template: '<App/>'
})

src\main.js

import Mock from 'mockjs'

let adapters = []
adapters.push(
  (mockAdapter) => mockAdapter.onPost('/api/member/loadPage').reply(req => {
    let promise = new Promise((resolve, reject) => {
      let data = req.data ? JSON.parse(req.data) : {
        size: 20
      }
      let result = {
        rows: [],
        total: 10000
      }
      for (let i = 0; i < data.size; i++) {
        let item = Mock.mock({
          id: Mock.Random.guid(),
          name: Mock.Random.cname(),
          sex: Mock.Random.integer(1, 2),
          'age|18-30': 1,
          date: Mock.Random.date(),
          address: Mock.mock('@county(true)'),
        })
        result.rows.push(item)
      }
      setTimeout(() => {
        resolve([200, result])
      }, 2000)
    })
    return promise
  })
)

adapters.push(
  (mockAdapter) => mockAdapter.onPost('/api/member/save').reply(req => {
    let promise = new Promise((resolve, reject) => {
      let data = req.data ? JSON.parse(req.data) : {}
      let result = {}
      if (data.name) {
        result.success = true
        result.message = '保存成功'
      } else {
        result.success = false
        result.message = '姓名是必填参数'
      }

      setTimeout(() => {
        resolve([200, result])
      }, 2000)
    })
    return promise
  })
)

adapters.push(
  (mockAdapter) => mockAdapter.onGet(/\/api\/member\/remove\/\w+/).reply(req => {
    let promise = new Promise((resolve, reject) => {
      let result = {
        success: true,
        message: '删除成功'
      }
      setTimeout(() => {
        resolve([200, result])
      }, 2000)
    })
    return promise
  })
)

export {
  adapters
}

src\mock\member.js

<template>
<section>
  <!--工具条-->
  <el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
    <el-form :inline="true" :model="filters">
      <el-form-item>
        <el-input v-model="filters.query" placeholder="姓名/手机号等条件" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" v-on:click="handleQuery" icon="el-icon-search">查询</el-button>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" v-on:click="handleAdd" icon="el-icon-plus">添加</el-button>
      </el-form-item>
    </el-form>
  </el-col>
  <el-table :data="rows" style="width: 100%;overflow: auto;" :height="clientHeight" stripe border highlight-current-row v-loading="pageLoading">
    <el-table-column label="注册日期" width="180">
      <template slot-scope="scope">
       <i class="el-icon-time"></i>
       <span style="margin-left: 10px">{{ scope.row.date }}</span>
     </template>
    </el-table-column>
    <el-table-column label="姓名" width="180" :show-overflow-tooltip="true">
      <template slot-scope="scope">
       <el-popover trigger="hover" placement="top">
         <p>姓名: {{ scope.row.name }}</p>
         <p>住址: {{ scope.row.address }}</p>
         <div slot="reference" class="name-wrapper">
           <el-tag size="medium">{{ scope.row.name }}</el-tag>
         </div>
       </el-popover>
     </template>
    </el-table-column>
    <el-table-column prop="sex" label="性别" width="100" align="center" :show-overflow-tooltip="true">
      <template slot-scope="scope">
        {{scope.row.sex===1?'男':'女'}}
      </template>
    </el-table-column>
    <el-table-column label="操作">
      <template slot-scope="scope">
       <el-button
         size="mini"
         type="primary"
         @click="handleEdit(scope.$index, scope.row)"><i class="el-icon-edit"></i>编辑</el-button>
       <el-button
         size="mini"
         type="danger"
         @click="handleDelete(scope.$index, scope.row)"><i class="el-icon-delete"></i>删除</el-button>
     </template>
    </el-table-column>
  </el-table>
  <!--底部-->
  <el-col :span="24" class="toolbar">
    <el-pagination layout="prev, pager, next" @current-change="handleCurrentChange" :page-size="20" :total="total" style="float:right;">
    </el-pagination>
  </el-col>

  <!--对话框-->
  <el-dialog :title="form && form.id ? '编辑' : '新增' " :visible.sync="formVisible" :close-on-click-modal="false">
    <el-form :model="form" label-width="100px" :rules="rules" ref="form">
      <el-form-item label="姓名" prop="name">
        <el-input v-model="form.name" />
      </el-form-item>
      <el-form-item label="性别" prop="sex">
        <el-radio-group v-model="form.sex">
          <el-radio :label="1">男</el-radio>
          <el-radio :label="2">女</el-radio>
        </el-radio-group>
      </el-form-item>
    </el-form>
    <div slot="footer" class="dialog-footer">
      <el-button @click.native="formVisible = false">取消</el-button>
      <el-button type="primary" @click.native="handleSubmit" :loading="formLoading">提交</el-button>
    </div>
  </el-dialog>

</section>
</template>

<script>
const rules = {
  name: [{
    required: true,
    message: '请输入姓名',
    trigger: 'blur'
  }],
  sex: [{
    required: true,
    message: '请选择性别',
    trigger: 'change'
  }]
}

let data = () => {
  return {
    //页码
    page: 1,
    //每页数量
    size: 20,
    //总数
    total: 0,
    //查询条件
    filters: {},
    //页面数据
    rows: [],
    //页面载入状态
    pageLoading: false,
    //列表高度
    clientHeight: '100%',
    //表单数据
    form: {},
    //验证规则
    rules: rules,
    //对话框隐藏状态
    formVisible: false,
    //表单提交状态
    formLoading: false
  }
}

let handleAdd = function() {
  this.form = {}
  this.form.sex = 1
  this.formVisible = true
}

let handleEdit = function(index, row) {
  this.form = Object.assign({}, row)
  this.formVisible = true
}

let handleDelete = function(index, row) {
  if (this.pageLoading)
    return

  this.$confirm('此操作将永久删除该数据, 是否继续?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(() => {
    this.pageLoading = true
    this.$axios.get('/api/member/remove/' + row.id).then(res => {
      this.pageLoading = false
      if (!res.data.success) {
        this.$message({
          type: 'error',
          message: res.data.message
        })
        return
      }
      this.$message({
        type: 'success',
        message: '删除成功!'
      })
      this.page = 1
      this.getRows()
    }).catch(e => this.pageLoading = false)
  }).catch(e => {})
}

let getRows = function() {
  if (this.pageLoading)
    return
  this.pageLoading = true

  let params = {
    page: this.page,
    size: this.size,
    query: this.filters.query
  }
  //调用post请求
  this.$axios.post('/api/member/loadPage', params).then(res => {
    this.pageLoading = false
    if (!res.data || !res.data.rows)
      return
    //总数赋值
    this.total = res.data.total
    this.page++;
    //页面元素赋值
    this.rows = res.data.rows
  }).catch(e => this.pageLoading = false)
}

let handleSubmit = function() {
  if (this.formLoading)
    return

  this.$refs.form.validate(valid => {
    if (!valid)
      return

    this.formLoading = true

    //调用http协议
    this.$axios.post('/api/member/save', this.form).then(res => {
      this.formLoading = false
      if (!res.data.success) {
        this.$message({
          showClose: true,
          message: res.data.message,
          type: 'error'
        });
        return
      }
      this.$message({
        type: 'success',
        message: '保存成功!'
      })

      //重新载入数据
      this.page = 1
      this.getRows()
      this.formVisible = false
    }).catch(e => this.formLoading = false)
  })
}

let handleQuery = function() {
  this.page = 1
  this.getRows()
}

let handleCurrentChange = function(val) {
  this.page = val
  this.getRows()
}

let initHeight = function() {
  this.clientHeight = (document.documentElement.clientHeight - 258) + 'px'
}

export default {
  data: data,
  methods: {
    //查询
    handleQuery,
    //添加
    handleAdd,
    //修改
    handleEdit,
    //删除
    handleDelete,
    //页数改变
    handleCurrentChange,
    //获取分页
    getRows,
    //初始化高度
    initHeight,
    //提交数据
    handleSubmit
  },
  mounted: function() {
    window.addEventListener('resize', this.initHeight)
    this.initHeight()
    this.getRows()
  }
}
</script>

<style scoped>
</style>

src\pages\Member.vue

运行效果如下图所示：

好了，到这里，整个前端的开发就结束了，请我们期待一起完成后端的开发。

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git代码地址：https://github.com/carter659/spring-boot-vue-element.git

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