How to use ECharts and Java interfaces to implement statistical analysis based on sales performance
@RestController @RequestMapping("/sales") public class SalesController { @GetMapping("/performance") public List<Performance> getSalesPerformance() { // 从数据库或其他数据源获取销售业绩数据,并返回一个List<Performance>对象 } }
In the above code, we use the @GetMapping
annotation to define a GET request interface with the path /sales /performance
. This interface will return a List
@GetMapping("/performance/chart") public String getSalesPerformanceChart() { List<Performance> performanceList = getSalesPerformance(); // 构建ECharts所需的数据结构 JSONArray data = new JSONArray(); for (Performance performance : performanceList) { JSONObject item = new JSONObject(); item.put("name", performance.getName()); item.put("value", performance.getValue()); data.add(item); } JSONObject result = new JSONObject(); result.put("legend", new JSONArray()); result.put("data", data); return result.toJSONString(); }
In the above code, we construct a JSON object result and encapsulate the legend and data fields in it. In the data field, use loop traversal to convert each Performance object into a JSON object and add it to the data array.
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>销售业绩统计分析</title> <script src="https://cdn.staticfile.org/echarts/4.2.1/echarts.min.js"></script> </head> <body> <div id="chart" style="width: 800px; height: 600px;"></div> <script> // 使用Ajax请求后端接口获取数据 var xhr = new XMLHttpRequest(); xhr.open('GET', '/sales/performance/chart', true); xhr.onreadystatechange = function () { if (xhr.readyState === 4 && xhr.status === 200) { var data = JSON.parse(xhr.responseText); // 使用ECharts库绘制图表 var chart = echarts.init(document.getElementById('chart')); var option = { series: [{ type: 'pie', name: '销售业绩', data: data.data }] }; chart.setOption(option); } }; xhr.send(); </script> </body> </html>
In the above code, we use Ajax to request the backend interface /sales/performance/chart
to obtain data and convert it into a JSON object data. Then, we use the ECharts library to draw a pie chart, using data as the data of the chart.
Note: The above is just a simple sample code, which may need to be adjusted and optimized according to specific needs in actual applications.
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