vue利用CodeMirrorr+json-lint实现可编辑可自动格式化的Json-Editor组件

Json-Editor is base on CodeMirrorr. Lint base on json-lint.

老规矩先来张效果图
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下面捋一下实现步骤

CodeMirrorrjsonlint_7">1、安装CodeMirrorr、jsonlint

npm install codemirror
npm install jsonlint

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2、编写Json-Editor组件

在如下位置新建JsonEditor文件夹及index文件
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index文件全部内容如下：

<template>
  <div class="json-editor">
    <textarea ref="textarea" />
  </div>
</template>

<script>
import CodeMirror from 'codemirror'
import 'codemirror/addon/lint/lint.css'
import 'codemirror/lib/codemirror.css'
import 'codemirror/theme/rubyblue.css'
require('script-loader!jsonlint')
import 'codemirror/mode/javascript/javascript'
import 'codemirror/addon/lint/lint'
import 'codemirror/addon/lint/json-lint'

export default {
  name: 'JsonEditor',
  /* eslint-disable vue/require-prop-types */
  props: ['value'],
  data() {
    return {
      jsonEditor: false
    }
  },
  watch: {
    value(value) {
      const editorValue = this.jsonEditor.getValue()
      if (value !== editorValue) {
        this.jsonEditor.setValue(JSON.stringify(this.value, null, 2))
      }
    }
  },
  mounted() {
    // CodeMirror.fromTextArea()中第一个参数是DOM元素，而且必须是textarea元素；第二个参数是可选配置项
    this.jsonEditor = CodeMirror.fromTextArea(this.$refs.textarea, {
      lineNumbers: true,
      mode: 'application/json',
      gutters: ['CodeMirror-lint-markers'],
      theme: 'rubyblue',
      lint: true
    })

    this.jsonEditor.setValue(JSON.stringify(this.value, null, 2))
    this.jsonEditor.on('change', cm => {
      this.$emit('changed', cm.getValue())
      this.$emit('input', cm.getValue())
    })
  },
  methods: {
    getValue() {
      return this.jsonEditor.getValue()
    },
  }
}
</script>

<style scoped>
.json-editor{
  height: 100%;
  position: relative;
}
.json-editor >>> .CodeMirror {
  height: auto;
  min-height: 300px;
}
.json-editor >>> .CodeMirror-scroll{
  min-height: 300px;
}
.json-editor >>> .cm-s-rubyblue span.cm-string {
  color: #F08047;
}
.addbtn{
  margin-bottom: 15px;
  margin-left: 30px;
}
</style>

3、利用json-editor组件实现自己的逻辑，我就不放自己的业务代码了，下面是一个小demo可以参考

<template>
  <div class="components-container">
    <div class="editor-container">
      <json-editor ref="jsonEditor" v-model="value" />
    </div>
  </div>
</template>

<script>
import JsonEditor from '@/components/JsonEditor'

const jsonData = '[{"items":[{"market_type":"forexdata","symbol":"XAUUSD"},{"market_type":"forexdata","symbol":"UKOIL"},{"market_type":"forexdata","symbol":"CORN"}],"name":""},{"items":[{"market_type":"forexdata","symbol":"XAUUSD"},{"market_type":"forexdata","symbol":"XAGUSD"},{"market_type":"forexdata","symbol":"AUTD"},{"market_type":"forexdata","symbol":"AGTD"}],"name":"贵金属"},{"items":[{"market_type":"forexdata","symbol":"CORN"},{"market_type":"forexdata","symbol":"WHEAT"},{"market_type":"forexdata","symbol":"SOYBEAN"},{"market_type":"forexdata","symbol":"SUGAR"}],"name":"农产品"},{"items":[{"market_type":"forexdata","symbol":"UKOIL"},{"market_type":"forexdata","symbol":"USOIL"},{"market_type":"forexdata","symbol":"NGAS"}],"name":"能源化工"}]'

export default {
  name: 'JsonEditorDemo',
  components: { JsonEditor },
  data() {
    return {
      value: JSON.parse(jsonData)
    }
  }
}
</script>

<style scoped>
.editor-container{
  position: relative;
  height: 100%;
}
</style>