定时任务支持在线生成cron表达式

ruoyi-quartz/src/main/java/com/ruoyi/quartz/controller/SysJobController.java

@@ -11,6 +11,7 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 import com.ruoyi.common.annotation.Log;
 import com.ruoyi.common.constant.Constants;
@@ -189,4 +190,31 @@ public class SysJobController extends BaseController
     {
         return jobService.checkCronExpressionIsValid(job.getCronExpression());
     }
+
+    /**
+     * Cron表达式在线生成
+     */
+    @GetMapping("/cron")
+    public String cron()
+    {
+        return prefix + "/cron";
+    }
+
+    /**
+     * 查询cron表达式近5次的执行时间
+     */
+    @GetMapping("/queryCronExpression")
+    @ResponseBody
+    public AjaxResult queryCronExpression(@RequestParam(value = "cronExpression", required = false) String cronExpression)
+    {
+        if (jobService.checkCronExpressionIsValid(cronExpression))
+        {
+            List<String> dateList = CronUtils.getRecentTriggerTime(cronExpression);
+            return success(dateList);
+        }
+        else
+        {
+            return error("表达式无效");
+        }
+    }
 }