1. 创建json文件，路径为 ..\public\data.json
{
"categories": ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"],
"data": [5, 20, 36, 10, 10, 20]
}
2. webpack.dev.conf.js 中增加如下代码
const express = require('express')
const app = express()
var appData = require('../src/public/data.json')
var apiRoutes = express.Router()
app.use('/api', apiRoutes)
devServer下增加如下代码
before(app) {
app.get('/api/data', (req, res) => {
res.json({
errno: 0,
data: appData
})
})
}
可以通过http://localhost:8080/api/data 获取数据
然后在index.vue中增加代码如下:
<template>
<div>
<div id='mainpie' style='width: 600px;height:400px;'></div>
</div>
</template>
<script>
export default {
name: 'index',
data() {
return {};
},
methods: {
drawpie() {
var myChart = this.$echarts.init(document.getElementById('mainpie'));
myChart.setOption({
title: {
text: '异步数据加载示例'
},
tooltip: {},
legend: {
data: ['销量']
},
xAxis: {
data: []
},
yAxis: {},
series: [
{
name: '销量',
type: 'bar',
data: []
}
]
});
$.ajax({
type: 'GET',
url: '/api/data',
dataType: 'json',
success: function(data) {
debugger;
myChart.setOption({
xAxis: {
data: data.data.categories
},
series: [
{
name: '销量',
data: data.data.data
}
]
});
}
});
}
},
mounted() {
this.drawpie();
}
};
</script>
实现效果如下：
