一、需求描述
前段时间接到一个需求是做一个类似接口文档的显示功能，将一段json数据贴到里面就可以自动解析出json数据的每个字段的类型和层级关系，用element组件的树表格的形式展示，并且可以手动新增、修改和删除某个数据字段。
二、界面展示
功能如下图所示：
1.未贴数据之前：
2.点击右上角的‘导入json'，在打开的弹框中贴入如下json数据：{"name":"lemon","sex":"女","age":18,"hobby":{"hobby1":"敲代码","hobby2":"跳恰恰"},"likeArr":["水果","青菜"]}
3.点击确认后树表格自动展示贴入的json数据，如下图所示；
4.点击每行的最右侧可以进行新增和删除操作；
5.点击tab切换到预览展示效果：
三、代码实现
弹框代码展示，新建一个jsonDialog.vue文件，MonacoEditor是一个json编辑器，实现以下代码：
<template>
<el-dialog
title="导入 json"
:visible.sync="dialogFormVisible"
:close-on-click-modal="false"
:modal-append-to-body="false"
width="35%"
@close="close"
class="my_dialog"
>
<div class="empi_dialog_form">
<!-- 返回 -->
<div v-if="type == 'resp'">
<monaco-editor v-model="jsonData" language="json" :readOnly="false"></monaco-editor>
</div>
</div>
<span slot="footer" class="dialog-footer">
<el-button @click="close">取 消</el-button>
<el-button type="primary" @click="onSubmit()">确认</el-button>
</span>
</el-dialog>
</template>
<script>
export default {
components: {
MonacoEditor: () => import('@/components/MonacoEditor')
},
data() {
return {
dialogFormVisible: false,
jsonData: null, //返回参数
}
},
methods: {
open() {
this.dialogFormVisible = true
},
close() {
this.dialogFormVisible = false
this.jsonData = ''
},
// 提交
onSubmit() {
if (!this.jsonData) return this.$message.error('json数据不能为空')
let flag = this.checkJson(data)
if (flag) {
this.dialogFormVisible = false
this.$emit('getJson', data)
} else {
return this.$message.error('json数据格式不正确')
}
},
// 判断是否是json格式
checkJson(str) {
if (typeof str == 'string') {
try {
let obj = JSON.parse(str)
if (typeof obj == 'object' && obj) {
return true
} else {
return false
}
} catch (e) {
//console.log('error：' + str + '!!!' + e)
return false
}
}
//console.log('It is not a string!')
}
}
}
</script>界面代码展示，新建一个jsonIndex.vue界面，实现以下代码：
<!-- 返回数据设置 -->
<div class="panel-item">
<div class="panel-item-title">返回参数</div>
<el-radio-group v-model="checkRespLabel"
size="mini" class="radio_btn_group">
<el-radio-button label="JSON">
</el-radio-button>
</el-radio-group>
<div class="panel-item-tab">
<div class="blue json-btn" v-show="activeTabName == 'first'" @click="addJsonClick('resp')" > 添加 </div>
<div class="blue json-btn" v-show="activeTabName == 'first'" @click="toJsonClick('resp')"> 导入json </div>
<el-tabs v-model="activeTabName" type="card" class="card-tab">
<el-tab-pane label="模板" name="first">
<el-table
:data="threeStepData.responseParams"
class="json-table"
:show-header="false"
:highlight-current-row="false"
row-key="id" size="medium"
default-expand-all
:tree-props="{children: 'children',hasChildren: 'hasChildren'}">
<el-table-column label="参数名称">
<template slot-scope="scopes">
<el-input placeholder="name" v-model="scopes.row.jsonName">
</el-input>
</template>
</el-table-column>
<el-table-column label="参数类型">
<template slot-scope="scopes">
<el-select v-model="scopes.row.jsonType" placeholder="type">
<el-option
v-for="item in typeData"
:key="item.value"
:label="item.label"
:value="item.value">
</el-option>
</el-select>
</template>
</el-table-column>
<el-table-column label="备注">
<template slot-scope="scopes">
<el-input placeholder="备注" v-model="scopes.row.jsonRemark">
</el-input>
</template>
</el-table-column>
<el-table-column label="操作" width="150">
<template slot-scope="scopes">
<el-tooltip
class="item"
effect="dark"
content="删除节点"
placement="top" :open-delay="500">
<i class="blue el-icon-close" @click="removeJsonClick(scopes.row, 'resp')"></i>
</el-tooltip>
<el-tooltip
class="item"
effect="dark"
content="添加子节点"
placement="top" :open-delay="500">
<i class="blue el-icon-plus" @click="addJsonChildrenClick(scopes.row, 'resp')"></i>
</el-tooltip>
</template>
</el-table-column>
</el-table>
</el-tab-pane>
<el-tab-pane label="预览" name="second">
<div class="panel-item-content">
<el-input type="textarea" disabled :rows="5" v-model="strParams">
</el-input>
</div>
</el-tab-pane>
</el-tabs>
</div>
</div>
//弹框
<jsonDialog ref="jsonDialog" @getJson="getJson"></jsonDialog>展示界面的功能代码，对导入json的展示及相关操作的实现：
<script>
export default {
components: {
MonacoEditor: () => import('@/components/MonacoEditor'),
jsonDialog: () => import('./../dialog/jsonDialog')
},
data() {
return {
threeStepData: {
responseParams: [
// {
// id: 1,
// jsonName: 'root',
// jsonType: 'object',
// jsonRemark: '备注',
// pid: 0,
// children: []
// }
]
},
checkRespLabel: 'JSON',
activeTabName: 'first',
typeData: [
{ label: 'string', value: 'string' },
{ label: 'number', value: 'number' },
{ label: 'array', value: 'array' },
{ label: 'object', value: 'object' },
{ label: 'boolean', value: 'boolean' }
]
}
},
computed: {
strParams() {
return this.threeStepData?.responseParams
? JSON.stringify(this.threeStepData.responseParams)
: '-'
},
},
methods: {
open(data) {
this.threeStepData = data
},
// 导入json
toJsonClick(type) {
this.$refs.jsonDialog.open(type)
},
// 生成唯一id
guid() {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(
/[xy]/g,
function (c) {
let r = (Math.random() * 16) | 0,
v = c == 'x' ? r : (r & 0x3) | 0x8
return v.toString(16)
}
)
},
// 获取json导入数据
getJson(data, type) {
let _data = JSON.parse(data)
let _type = this.getJsonType(_data)
let arr = []
if (_type === 'object') {
arr = this.handleJson(_data)
}
if (type == 'resq') {
this.threeStepData.responseParams = arr
// this.threeStepData.responseParams[0].children = arr
}
},
// json导入数据转换
handleJson(data) {
let arr = []
Object.keys(data).map((key) => {
let _type = this.getJsonType(data[key])
if (_type && _type == 'object') {
let children = this.handleJson(data[key])
arr.push({
id: this.guid(),
pid: data.id,
jsonName: key,
jsonType: _type,
jsonRemark: '',
children
})
} else {
arr.push({
id: this.guid(),
jsonName: key,
jsonType: _type,
jsonRemark: ''
})
}
})
return arr
},
// 判断数据类型
getJsonType(data) {
let type = Object.prototype.toString.call(data)
if (type === '[object String]') {
type = 'string'
} else if (type === '[object Number]') {
type = 'number'
} else if (type === '[object Null]') {
type = 'null'
} else if (type === '[object Boolean]') {
type = 'boolean'
} else if (type === '[object Array]') {
type = 'array'
} else if (type === '[object Object]') {
type = 'object'
} else {
type = '未进行判断的类型:' + type
}
return type
},
// 新增json数据
addJsonClick(type) {
if(type=='resp'){
// if(this.threeStepData.responseParams?.length==1){
// this.$message.closeAll();
// this.$message.error('请勿重复添加根节点！');
// return;
// }
let obj = {
id: this.guid(),
jsonName: '',
jsonType: 'object',
jsonRemark: '',
// pid: 0,
children: []
}
this.threeStepData.responseParams.push(obj)
}
},
//添加子节点
addJsonChildrenClick(data, type) {
let obj = {
id: this.guid(),
jsonName: '',
jsonType: 'string',
jsonRemark: '',
pid: data.id
}
let node = this.addNode(this.threeStepData.responseParams, data.id, obj)
if (type === 'resp') {
this.threeStepData.responseParams = JSON.parse(JSON.stringify(node))
}
},
addNode(list, pid, obj) {
list.forEach((e) => {
if (e.id == pid) {
e.children ? e.children.push(obj) : (e.children = [obj])
} else {
if (e.children && e.children.length > 0) {
this.addNode(e.children, pid, obj)
}
}
})
return list
},
// 移除json数据
removeJsonClick(data, type) {
let objMap = {
resp: this.threeStepData.responseParams,
}
let node = this.removeItem(objMap[type], data.id)
if (type === 'resp') {
this.threeStepData.responseParams = JSON.parse(JSON.stringify(node))
}
},
removeItem(root, id) {
root.forEach((e, i) => {
if (e.id === id) {
root.splice(i, 1)
} else if (e.children && e.children.length > 0) {
this.removeItem(e.children, id)
}
})
return root
}
}
}
</script>综上所述，已经完成了json数据的展示、修改和新增删除都已经完成，可能有些错误，欢迎大家指正~
原文地址：https://blog.csdn.net/weixin_47978760/article/details/128718910
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