vue3小案例-信息系统

第一步，拉取或者创建一个含有 axios 插件的 vue3 项目

创建项目教程：vue3项目搭建-1-创建项目-CSDN博客

安装 axios 插件命令：

npm install axios

第二步，mock 模拟后端接口

在根目录创建 mock 文件夹，在文件夹中创建 index.js 文件，文件内容：

javascript">import Mock from "mockjs"
// 使用 Mock 模拟后端数据
const arr = []
for (let i = 0; i < 10; i++) {arr.push({id: Mock.mock("@id"),name: Mock.mock("@cname"),place: Mock.mock("@county(true)"),})
}
export default [{url: "/list",method: "get",response: () => {return arr},},{url: "/del/:id",method: "delete",response: (req) => {const index = arr.findIndex((item) => item.id === req.query.id)if (index > -1) {arr.splice(index, 1)return { success: true }} else {return { success: false }}},},{url: "/edit/:id",method: "patch",response: ({ query, body }) => {const item = arr.find((item) => item.id === query.id)if (item) {item.name = body.nameitem.place = body.placereturn { success: true }} else {return { success: false }}},},
]

vite.config.js:

javascript">import { fileURLToPath, URL } from "node:url"import { defineConfig } from "vite"
import vue from "@vitejs/plugin-vue"
import { viteMockServe } from "vite-plugin-mock"// https://vitejs.dev/config/
export default defineConfig({plugins: [vue(),viteMockServe({mockPath: "mock",localEnabled: true,}),],resolve: {alias: {"@": fileURLToPath(new URL("./src", import.meta.url)),},},
})

第三步，完善前端代码

App.vue:

javascript"><script setup>
import Edit from './components/Edit.vue'
import axios from 'axios'
import { onMounted,ref } from 'vue'// TODO: 列表渲染
//装数据的列表
const list = ref([])
const getList = async () => {//通过发送 /list 请求从后端拿到列表数据const res = await axios.get('/list')list.value = res.data
}
onMounted(() => getList())
// TODO: 删除功能
//获取 id ,删除 记录，更新页面
const onDelete = async (id) => {console.log(id)//将后端中 id 为 {id} 的记录删除,注意这里是左上角 esc 下面的 '`' 符号await axios.delete(`/del/${id}`)//更新getList()
}
// TODO: 编辑功能
//获取 id，修改数据，更新页面const editRef = ref(null)const update = (row) => {editRef.value.open(row)getList()
}
</script><template><div class="app"><el-table :data="list"><el-table-column label="ID" prop="id"></el-table-column><el-table-column label="姓名" prop="name" width="150"></el-table-column><el-table-column label="籍贯" prop="place"></el-table-column><el-table-column label="操作" width="150"><template #default="{ row }"><el-button type="primary" @click="update(row)" link>编辑</el-button><el-button type="danger" @click="onDelete(row.id)" link>删除</el-button></template></el-table-column></el-table></div><!-- 将更新页面的监听给子组件 --><Edit ref="editRef" @on-update="getList"/>
</template><style scoped>
.app {width: 980px;margin: 100px auto 0;
}
</style>

修改数据的弹窗表单组件：

javascript"><script setup>
// TODO: 编辑
import axios from 'axios'
import { onMounted,ref } from 'vue'
// 弹框开关
const dialogVisible = ref(false)
// 表单关联行中的字段
const form = ref({name: '',place: '',id: ''
})
const open = (row) => {console.log(row)form.value.id = row.idform.value.name = row.nameform.value.place = row.placedialogVisible.value = true
}
defineExpose({open
})//拿到父组件的所有标记
const emit = defineEmits(['on-update'])//TODO
const editUpdate = async () => {console.log(form)//将姓名和籍贯带到路径中，并发送请求await axios.patch(`/edit/${form.value.id}`, {name: form.value.name,place: form.value.place,})//关闭弹窗dialogVisible.value = false//触发监听，通知父组件更新列表emit('on-update')
}</script><template><el-dialog v-model="dialogVisible" title="编辑" width="400px"><el-form label-width="50px"><el-form-item label="姓名"><el-input placeholder="请输入姓名" v-model="form.name"/></el-form-item><el-form-item label="籍贯"><el-input placeholder="请输入籍贯" v-model="form.place"/></el-form-item></el-form><template #footer><span class="dialog-footer"><el-button @click="dialogVisible = false">取消</el-button><el-button type="primary" @click="editUpdate">确认</el-button></span></template></el-dialog>
</template><style scoped>
.el-input {width: 290px;
}
</style>