更新提取接口参数，完善流程与测试代码逻辑

cmd/playground/main.go

@@ -1,10 +1,9 @@
 package main
 
-import (
-	"fmt"
-	"time"
-)
-
 func main() {
-	fmt.Printf("%v\n", time.Now())
+	println('|')
+	println(':')
+	println('\t')
+	println('\r')
+	println('\n')
 }