Spring Boot常见问题Unable to start embedded container; nested exception is java.lang.NoSuchMethodErro(代码

Posted 2020-10-06 百撕妳

问题描述：通过Spring Boot官方提供的方式，写出如下HelloWorld代码。

@Controller
@EnableAutoConfiguration
public class HelloWorld {
    @RequestMapping("/wu")
    @ResponseBody
    String home() {
        return "Hello World!";
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(HelloWorld.class, args);
    }
}

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　　在运行main()方法时，抛出如下异常。

org.springframework.context.ApplicationContextException: Unable to start embedded container; 
　　 nested exception is java.lang.NoSuchMethodError: org.apache.tomcat.util.scan.StandardJarScanner.setJarScanFilter(Lorg/apache/tomcat/JarScanFilter;)V
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) ~[spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at dolphin.springboot.controller.HelloWorld.main(HelloWorld.java:30) [classes/:na]
Caused by: java.lang.NoSuchMethodError: org.apache.tomcat.util.scan.StandardJarScanner.setJarScanFilter(Lorg/apache/tomcat/JarScanFilter;)V
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner$Tomcat8TldSkipSetter.setSkipPattern(SkipPatternJarScanner.java:106) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner.setPatternToTomcat8SkipFilter(SkipPatternJarScanner.java:61) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner.<init>(SkipPatternJarScanner.java:56) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.SkipPatternJarScanner.apply(SkipPatternJarScanner.java:87) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.prepareContext(TomcatEmbeddedServletContainerFactory.java:209) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:178) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:164) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:134) ~[spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE]
    ... 8 common frames omitted

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　　经检查，在org.apache.tomcat.util.scan.StandardJarScanner类中存在setJarScanFilter(Lorg/apache/tomcat/JarScanFilter;)方法，并且亲自测试，可以正常使用。而抛出异常却说没有此方法。

分析原因：1.存在重复的jar包。2.版本调整带来的影响。

　　经排查，发现MyEclipse Tomcat v7.0 Runtime Libraries包，和Maven Dependencies包中均包含org.apache.tomcat.util.scan.StandardJarScanner类。

　　

　　于是，取消MyEclipse Tomcat v7.0 Runtime Libraries包，运行正常。

  .   ____          _            __ _ _
 /\\\\ / ___\'_ __ _ _(_)_ __  __ _ \\ \\ \\ \\
( ( )\\___ | \'_ | \'_| | \'_ \\/ _` | \\ \\ \\ \\
 \\\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  \'  |____| .__|_| |_|_| |_\\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.6.RELEASE)

2017-09-09 09:27:03.646  INFO 6400 --- [           main] d.springboot.controller.HelloWorld       : Starting HelloWorld on DESKTOP-N8HPR69 with PID 6400 (started by wushuai in C:\\Users\\wushuai\\Workspaces\\MyEclipse for Spring 2014\\springboot Maven Webapp)
2017-09-09 09:27:03.648  INFO 6400 --- [           main] d.springboot.controller.HelloWorld       : No active profile set, falling back to default profiles: default
2017-09-09 09:27:03.679  INFO 6400 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5680a576: startup date [Sat Sep 09 09:27:03 CST 2017]; root of context hierarchy
2017-09-09 09:27:04.734  INFO 6400 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-09-09 09:27:04.743  INFO 6400 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2017-09-09 09:27:04.744  INFO 6400 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.16
2017-09-09 09:27:04.820  INFO 6400 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-09-09 09:27:04.820  INFO 6400 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1143 ms
2017-09-09 09:27:04.952  INFO 6400 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: \'dispatcherServlet\' to [/]
2017-09-09 09:27:04.956  INFO 6400 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: \'characterEncodingFilter\' to: [/*]
2017-09-09 09:27:04.956  INFO 6400 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: \'hiddenHttpMethodFilter\' to: [/*]
2017-09-09 09:27:04.956  INFO 6400 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: \'httpPutFormContentFilter\' to: [/*]
2017-09-09 09:27:04.956  INFO 6400 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: \'requestContextFilter\' to: [/*]
2017-09-09 09:27:05.266  INFO 6400 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5680a576: startup date [Sat Sep 09 09:27:03 CST 2017]; root of context hierarchy
2017-09-09 09:27:05.324  INFO 6400 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/wu]}" onto java.lang.String dolphin.springboot.controller.HelloWorld.home()
2017-09-09 09:27:05.327  INFO 6400 --- [           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.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2017-09-09 09:27:05.328  INFO 6400 --- [           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.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2017-09-09 09:27:05.356  INFO 6400 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-09 09:27:05.356  INFO 6400 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-09 09:27:05.398  INFO 6400 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-09 09:27:05.580  INFO 6400 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2017-09-09 09:27:05.650  INFO 6400 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-09-09 09:27:05.655  INFO 6400 --- [           main] d.springboot.controller.HelloWorld       : Started HelloWorld in 2.298 seconds (JVM running for 2.534)

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解决办法：查看报错文件所在的包，移除重复部分。