Django和ECharts异步请求示例

前提条件

创建django项目，安装配置过程这里就不讲述了。

后端url

http://127.0.0.1:8000/echarts/demo/

view视图函数

from django.http import HttpResponse
import jsondef EchartsDemo(request):data = {}categories = ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]values = [5, 20, 36, 10, 10, 20]data['categories'] = categoriesdata['values'] = valuesreturn HttpResponse(json.dumps(data), content_type="application/json")

前端页面

需要分别引入jquery、echarts，顺序jquery在前

<!DOCTYPE html>
<html><head><meta charset="utf-8"><title>echarts示例</title>		<script src="jquery.min.js"></script><script type = "text/javascript" src = "echarts.min.js" ></script>		</head><body>				<div id="main" style="width: 800px;height:600px;"></div><script type="text/javascript">var myChart = echarts.init(document.getElementById('main'));$.get('api/echarts/demo/').done(function(data) {// data 的结构:// {//     categories: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"],//     values: [5, 20, 36, 10, 10, 20]// }myChart.setOption({title: {text: '异步数据加载示例'},tooltip: {},legend: {},xAxis: {data: data.categories},yAxis: {},series: [{name: '销量',type: 'bar',data: data.values}]});});</script></body>
</html>

跨域问题

html浏览器不支持跨域请求，这里采用nginx。

server {listen       80;server_name  localhost;#charset koi8-r;#access_log  logs/host.access.log  main;location / {root   html;index  index.html index.htm;}location /api {rewrite  ^.+api/?(.*)$ /$1 break;proxy_pass  http://127.0.0.1:8000;}}

演示效果：