feat(Go-StudyExample):2020/12/17: 新增cronTab与go cron的定时任务使用示例

example/cron/Crontab_test.go

@@ -0,0 +1,66 @@
+/*
+ *  @Author : huangzj
+ *  @Time : 2020/12/16 17:10
+ *  @Description：
+ */
+
+package cron
+
+import (
+	"fmt"
+	"github.com/robfig/cron"
+	"log"
+	"testing"
+)
+
+//测试单个定时任务
+func TestCron(t *testing.T) {
+	i := 0
+	c := cron.New()
+	spec := "0 */1 * * * ?" //一分钟运行一次
+	_ = c.AddFunc(spec, func() {
+		i++
+		fmt.Println("cron running:", i)
+	})
+	c.Start()
+
+	select {}
+}
+
+//多个定时任务
+func TestMoreCron(t *testing.T) {
+	i := 0
+	c := cron.New()
+	//AddFunc
+	spec := "*/5 * * * * ?"
+	_ = c.AddFunc(spec, func() {
+		i++
+		log.Println("cron running:", i)
+	})
+
+	//AddJob方法
+	_ = c.AddJob(spec, TestJob{})
+	_ = c.AddJob(spec, Test2Job{})
+
+	//启动计划任务
+	c.Start()
+
+	//关闭着计划任务, 但是不能关闭已经在执行中的任务.
+	defer c.Stop()
+
+	select {}
+}
+
+type TestJob struct {
+}
+
+func (t TestJob) Run() {
+	fmt.Println("testJob1...")
+}
+
+type Test2Job struct {
+}
+
+func (t Test2Job) Run() {
+	fmt.Println("testJob2...")
+}

example/cron/Jasonlvhit_test.go

@@ -0,0 +1,96 @@
+/*
+ *  @Author : huangzj
+ *  @Time : 2020/12/16 17:23
+ *  @Description：
+ */
+
+package cron
+
+import (
+	"fmt"
+	"github.com/jasonlvhit/gocron"
+	"testing"
+	"time"
+)
+
+func TestGoCron(t *testing.T) {
+	s := gocron.NewScheduler()
+	_ = s.Every(1).Seconds().Do(task)
+	_ = s.Every(4).Seconds().Do(superWang)
+
+	sc := s.Start() // keep the channel
+	go test(s, sc)  // wait
+	<-sc            // it will happens if the channel is closed
+}
+
+func task() {
+	fmt.Println("I am runnning task.", time.Now())
+}
+func superWang() {
+	fmt.Println("I am runnning superWang.", time.Now())
+}
+
+func test(s *gocron.Scheduler, sc chan bool) {
+	time.Sleep(8 * time.Second)
+	s.Remove(task) //remove task
+	time.Sleep(8 * time.Second)
+	s.Clear()
+	fmt.Println("All task removed")
+	close(sc) // close the channel
+}
+
+func TestFunc(t *testing.T) {
+	// Do jobs without params
+	_ = gocron.Every(1).Second().Do(task)
+	_ = gocron.Every(2).Seconds().Do(task)
+	_ = gocron.Every(1).Minute().Do(task)
+	_ = gocron.Every(2).Minutes().Do(task)
+	_ = gocron.Every(1).Hour().Do(task)
+	_ = gocron.Every(2).Hours().Do(task)
+	_ = gocron.Every(1).Day().Do(task)
+	_ = gocron.Every(2).Days().Do(task)
+	_ = gocron.Every(1).Week().Do(task)
+	_ = gocron.Every(2).Weeks().Do(task)
+
+	// Do jobs with params
+	_ = gocron.Every(1).Second().Do(taskWithParams, 1, "hello")
+
+	// Do jobs on specific weekday
+	_ = gocron.Every(1).Monday().Do(task)
+	_ = gocron.Every(1).Thursday().Do(task)
+
+	// Do a job at a specific time - 'hour:min:sec' - seconds optional
+	_ = gocron.Every(1).Day().At("10:30").Do(task)
+	_ = gocron.Every(1).Monday().At("18:30").Do(task)
+	_ = gocron.Every(1).Tuesday().At("18:30:59").Do(task)
+
+	// Begin job immediately upon start
+	_ = gocron.Every(1).Hour().From(gocron.NextTick()).Do(task)
+
+	// Begin job at a specific date/time
+	timed := time.Date(2019, time.November, 10, 15, 0, 0, 0, time.Local)
+	_ = gocron.Every(1).Hour().From(&timed).Do(task)
+
+	// NextRun gets the next running time
+	_, time := gocron.NextRun()
+	fmt.Println(time)
+
+	// Remove a specific job
+	gocron.Remove(task)
+
+	// Clear all scheduled jobs
+	gocron.Clear()
+
+	// Start all the pending jobs
+	<-gocron.Start()
+
+	// also, you can create a new scheduler
+	// to run two schedulers concurrently
+	s := gocron.NewScheduler()
+	_ = s.Every(3).Seconds().Do(task)
+	<-s.Start()
+}
+
+func taskWithParams(a int, b string) {
+	fmt.Println(a, b)
+}

example/cron/readme.md

@@ -0,0 +1,10 @@
+cronTab包获取地址：go get -u github.com/robfig/cron
+
+cronTab参考地址：http://www.topgoer.com/%E9%A1%B9%E7%9B%AE/%E5%AE%9A%E6%97%B6%E4%BB%BB%E5%8A%A1/cron.html
+
+
+
+go cron包获取地址：go get -u github.com/jasonlvhit/gocron
+
+go cron参考地址：http://www.topgoer.com/%E9%A1%B9%E7%9B%AE/%E5%AE%9A%E6%97%B6%E4%BB%BB%E5%8A%A1/gocron.html
+

readme.md

@@ -25,6 +25,8 @@ json与struct之间转换处理工具使用示例
 
 2020/12/17：新增yanyiwu中文分词工具使用示例
 
+2020/12/17: 新增cronTab与go cron的定时任务使用示例
+
 # mod vendor模式加载包
 通过go mod的方式加载的github上面的包会有报红的问题，但是包本身是可以运行的，这样就是会有一个问题，如果你想要点击去看方法的内容，没办法做到