Merge pull request 'fix:判断图表为0的时候的情况；' (#329) from yangws into main

Reviewed-on: #329

src/renderer/src/views/classTask/container/classOverview/distribution/echarts.vue

@@ -74,7 +74,7 @@ function initChart() {
         position: 'top',
         formatter: params => {
           const value = dataList.value[params.dataIndex].value;
-          const percentage = ((value / total) * 100).toFixed(); // 计算百分比并保留两位小数
+          const percentage = value ? ((value / total) * 100).toFixed() : 0; // 计算百分比并保留两位小数
           return `${value}人 ${percentage}%`; // 显示为百分比形式
         },
         color: '#333',