[英]Maven Spring Boot application stuck
I have created a sample Spring Boot application which i can Run with Run as Spring Boot App option in STS. 我创建了一个示例Spring Boot应用程序,该应用程序可以与STS中的“以Spring Boot App运行”选项一起运行。 I can also run Junit tests with Run as Junit Option without any issue.
我也可以使用“以Junit选项运行”来运行Junit测试,而不会出现任何问题。
But when i try to package my application with Maven using Run as Maven Build option, application just stuck at some point always. 但是,当我尝试使用“以Maven生成方式运行”选项将应用程序与Maven打包时,应用程序总是停留在某个时刻。
I have below piece of code at starting level. 我在入门级下面有一段代码。
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
public void run(String... args) throws Exception {
Scanner scan = new Scanner(System.in);
String name = scan.next();// It just stuck here especially when i use run as maven build
Double balance = scan.nextDouble();
Card card = new Card(name, balance);
scan.close();
My console looks like stuck here 我的控制台看起来像卡在这里
2018-03-11 00:39:58.619 INFO 22835 --- [ main] c.a.o.t.daoImpl.test.JourneyDAOImplTest : Starting JourneyDAOImplTest on localhost.localdomain with PID 22835 (started by root in /root/Documents/workspace-sts-3.9.0.RELEASE/oystercard)
2018-03-11 00:39:58.629 INFO 22835 --- [ main] c.a.o.t.daoImpl.test.JourneyDAOImplTest : No active profile set, falling back to default profiles: default
2018-03-11 00:39:58.931 INFO 22835 --- [ main] o.s.w.c.s.GenericWebApplicationContext : Refreshing org.springframework.web.context.support.GenericWebApplicationContext@6c1a5b54: startup date [Sun Mar 11 00:39:58 IST 2018]; root of context hierarchy
2018-03-11 00:40:04.630 INFO 22835 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.web.context.support.GenericWebApplicationContext@6c1a5b54: startup date [Sun Mar 11 00:39:58 IST 2018]; root of context hierarchy
2018-03-11 00:40:04.991 INFO 22835 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-03-11 00:40:04.995 INFO 22835 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-03-11 00:40:05.155 INFO 22835 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-11 00:40:05.177 INFO 22835 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-11 00:40:05.427 INFO 22835 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-11 00:40:05.942 INFO 22835 --- [ main] c.a.o.t.daoImpl.test.JourneyDAOImplTest : Started JourneyDAOImplTest in 8.48 seconds (JVM running for 12.679)
I am only expecting two values from Scan
. 我只期望
Scan
两个值。 where i Have given many values to just show the application stuck at this point. 在这里我给出了很多值,只是表明应用程序在这一点上卡住了。
2018-03-11 08:00:50.876 INFO 18520 --- [ main] c.a.o.t.daoImpl.test.JourneyDAOImplTest : Starting JourneyDAOImplTest on localhost.localdomain with PID 18520 (started by root in /root/Documents/workspace-sts-3.9.0.RELEASE/oystercard)
2018-03-11 08:00:50.880 INFO 18520 --- [ main] c.a.o.t.daoImpl.test.JourneyDAOImplTest : No active profile set, falling back to default profiles: default
2018-03-11 08:00:51.105 INFO 18520 --- [ main] o.s.w.c.s.GenericWebApplicationContext : Refreshing org.springframework.web.context.support.GenericWebApplicationContext@6c1a5b54: startup date [Sun Mar 11 08:00:51 IST 2018]; root of context hierarchy
2018-03-11 08:00:59.383 INFO 18520 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.web.context.support.GenericWebApplicationContext@6c1a5b54: startup date [Sun Mar 11 08:00:51 IST 2018]; root of context hierarchy
2018-03-11 08:00:59.739 INFO 18520 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-03-11 08:00:59.742 INFO 18520 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-03-11 08:00:59.880 INFO 18520 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-11 08:00:59.881 INFO 18520 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-11 08:01:00.053 INFO 18520 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-03-11 08:01:02.014 INFO 18520 --- [ main] c.a.o.t.daoImpl.test.JourneyDAOImplTest : Started JourneyDAOImplTest in 12.566 seconds (JVM running for 18.154)
**Rajesh
30.0
30.0
Rajesh
Rajesh
30.0
fdsfdsfdsjfds
46548768672**
UPDATE: When i ran mvn spring-boot:run
, It works fine. 更新:当我运行
mvn spring-boot:run
,它工作正常。 But If i ran using mvn clean install spring-boot:run
, it stuck in the middle Any Help? 但是,如果我使用
mvn clean install spring-boot:run
,它停在中间有帮助吗?
The application is stuck because it is waiting for input data in scan.next()
method call. 该应用程序被阻塞,因为它正在等待
scan.next()
方法调用中的输入数据。
As per Java documentation : 根据Java文档 :
This method may block while waiting for input to scan, even if a previous invocation of hasNext() returned true.
即使先前调用hasNext()返回true,此方法也可能在等待输入扫描时阻塞。
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