好家伙,本篇介绍如何实现"改"
我们先来看看效果吧
(这可不是假数据哟,这是真数据哟)
(忘记录鼠标了,这里是点了一下刷新)
我们依旧先来理一下思路:
首先在"管理"页面中,我能看到所有的书本信息,
随后,在每一个信息后都有对应的"修改按钮"
当我点击这个按钮时,我要①拿到这个这条数据的id($router传参)
然后②跳转到"信息修改界面",(这个界面会像书本添加的那个界面一样,有两个输入框,一个提交按钮,一个重置按钮)
这时,我向后端③请求到当前这条"id"的相关数据(举例:{id:1,name:三体1,auther:刘慈欣})
将它展示到"信息修改界面"的输入框中,随后,你可以将这些数据根据你想要的形状进行修改
最后点击修改数据,④发送axios请求到后端提交更新后的数据
思路清晰,开干
目录如下:
这里我们只需用到MyUsers.vue组件(书本管理页)和MyGoods.vue组件(书本修改页),
当然了,我们要先把这个信息修改界面写(CV)出来
MyGoods组件如下
这里我们选择让id只读,不允许修改
MyGoods.vue代码如下:
<!-- 该组件为书本修改功能组件 -->
<template>
<el-form style="width: 60%" :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
<el-form-item label="图书编号" prop="id">
<el-input v-model="ruleForm.id" readonly=""></el-input>
</el-form-item>
<el-form-item label="图书名称" prop="name">
<el-input v-model="ruleForm.name"></el-input>
</el-form-item>
<el-form-item label="作者" prop="author">
<el-input v-model="ruleForm.author"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm('ruleForm')">修改</el-button>
<el-button @click="resetForm('ruleForm')">重置</el-button>
</el-form-item>
</el-form>
</template>
<script>
import axios from 'axios'
export default {
data() {
return {
ruleForm: {
id: '',
name: '',
author: ''
},
rules: {
name: [
{ required: true, message: '图书名称不能为空', trigger: 'blur' }
],
author:[
{ required: true, message: '作者不能为空', trigger: 'blur' }
]
}
};
},
methods: {
submitForm(formName) {
const _this = this
this.$refs[formName].validate((valid) => {
if (valid) {
axios.put('http://localhost:8011/book/update',this.ruleForm).then(function(resp){
if(resp.data == 'success'){
_this.$alert('《'+_this.ruleForm.name+'》修改成功!', '消息', {
confirmButtonText: '确定',
callback: action => {
_this.$router.push('/home/users')
}
})
}
})
} else {
return false;
}
});
},
resetForm(formName) {
this.$refs[formName].resetFields();
}
},
created(){
const _this=this
alert(this.$route.query.id)
axios.get('http://localhost:8011/book/findById/'+this.$route.query.id).then(function(resp){
_this.ruleForm =resp.data
})
}
}
</script>
MyUsers.vue代码如下:
<!-- 该组件为表单主要组件 -->
<template>
<div>
<!-- 标题 -->
<h4 class="text-center">用户管理</h4>
<!-- 用户添加按钮 -->
<el-col :span="4">
<el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
</el-col>
<!-- 用户列表 -->
<el-table :data="tableData" border style="width: 100%">
<el-table-column prop="id" label="序号" width="180">
</el-table-column>
<el-table-column prop="name" label="书名" width="180">
</el-table-column>
<el-table-column prop="author" label="作者" width="180">
</el-table-column>
<el-table-column label="操作" width="180">
<template slot-scope="scope">
<el-button @click="handleClick(scope.row)" type="text" size="small">修改</el-button>
<el-button @click="Bookdelete(scope.row)" type="text" size="small">删除</el-button>
</template>
</el-table-column>
</el-table>
<el-pagination :page-size="6" :pager-count="11" layout="prev, pager, next" :total="total" @current-change="page">
</el-pagination>
<!-- <el-pagination :page-size="20"
:pager-count="11"
layout="prev, pager, next"
:total="18"
@current-change="page" >
</el-pagination> -->
</div>
</template>
<script>
import axios from 'axios'
export default {
name: 'MyUser',
data() {
return {
total: null,
// 用户列表数据
tableData: [
{ id: '1', name: '三体1', author: '大刘' },
{ id: '2', name: '三体2', author: '大刘' },
],
addDialogVisible: false, //控制添加用户对话框的显示与隐藏
addUserForm: {},
//添加表单的验证规则对象
addUserFormRules: {
// username: [{required:true,message:'请输入用户名',trigger:'blur'},
// {min:3,max:10,message:'用户名长度在3~10个字符',trigger:'blur'}],
// password: [{required:true,message:'请输入密码',trigger:'blur'},
// {min:6,max:15,message:'密码长度在6~15个字符',trigger:'blur'}],
// email: [{required:true,message:'请输入邮箱',trigger:'blur'}],
// mobile: [{required:true,message:'请输入手机号',trigger:'blur'}]
}
}
},
methods: {
//书本删除方法
Bookdelete(row) {
const _this = this
axios.delete('http://localhost:8011/book/deleteById/' + row.id).then(() => {
_this.$alert('《' + row.name + '》删除成功!', '消息', {
confirmButtonText: '确定',
callback: action => {
window.location.reload()
}
})
})
},
//页面点击修改按钮
handleClick(row) {
console.log(row);
this.$router.push({
path: "goods",
query: {
id: row.id
}
})
},
//分页方法
page(currentPage) {
const _this = this;
axios.get('http://localhost:8011/book/findAll/' + currentPage + '/6').then(function (resp) {
_this.tableData = resp.data.content
_this.total = resp.data.totalElements
console.log(resp.data)
})
}
},
created() {
const _this = this;
axios.get('http://localhost:8011/book/findAll/1/6').then(function (resp) {
_this.tableData = resp.data.content
_this.total = resp.data.totalElements
console.log(resp.data)
})
}
}
</script>
<style lang="less" scoped>
</style>
(别忘了配路由,你已经是个成熟的cv程序员了,要学会自己配路由)
后端的接口:
package com.example.demo2.controller;
import com.example.demo2.entity.Book;
import com.example.demo2.repository.BookRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/book")
public class BookHandler {
@Autowired
private BookRepository bookRepository;
@GetMapping("/findAll/{page}/{size}")
public Page<Book> findAll(@PathVariable("page") Integer page, @PathVariable("size") Integer size){
PageRequest request = PageRequest.of(page-1,size);
return bookRepository.findAll(request);
}
@PostMapping("/save")
public String save(@RequestBody Book book){
Book result = bookRepository.save(book);
if(result != null){
return "success";
}else{
return "error";
}
}
@GetMapping("/findById/{id}")
public Book findById(@PathVariable("id") Integer id){
return bookRepository.findById(id).get();
}
@PutMapping("/update")
public String update(@RequestBody Book book){
Book result = bookRepository.save(book);
if(result != null){
return "success";
}else{
return "error";
}
}
@DeleteMapping("/deleteById/{id}")
public void deleteById(@PathVariable("id") Integer id){
bookRepository.deleteById(id);
}
}
来吧
1.拿到这个这条数据的id
<template slot-scope="scope">
<el-button @click="handleClick(scope.row)" type="text" size="small">修改</el-button>
<el-button @click="Bookdelete(scope.row)" type="text" size="small">删除</el-button>
</template>
对应方法:
//页面点击修改按钮
handleClick(row) {
console.log(row);
this.$router.push({
path: "goods",
query: {
id: row.id
}
})
},
2.跳转到"信息修改界面"
this.$router.push({
path: "goods",
query: {
id: row.id
}
})
query:用来传参的一个属性
3.请求到当前这条"id"的相关数据,并将它展示到"信息修改界面"的输入框中
created(){
const _this=this
alert(this.$route.query.id)
axios.get('http://localhost:8011/book/findById/'+this.$route.query.id).then(function(resp){
_this.ruleForm =resp.data
})
}
4.发送axios请求到后端提交更新后的数据
submitForm(formName) {
const _this = this
this.$refs[formName].validate((valid) => {
if (valid) {
axios.put('http://localhost:8011/book/update',this.ruleForm).then(function(resp){
if(resp.data == 'success'){
_this.$alert('《'+_this.ruleForm.name+'》修改成功!', '消息', {
confirmButtonText: '确定',
callback: action => {
_this.$router.push('/home/users')
}
})
}
})
} else {
return false;
}
});
},
注意此处用的是put请求
搞定啦!(激动)