无法让我的spring boot应用程序使用jsp

Question

我的Spring启动Web应用程序有问题。它使用嵌入式jetty（必须是jetty-而不是tomcat），并且使用jsp视图。但似乎没有办法让嵌入式jetty与jsp视图一起工作。实际上，当我运行mu应用程序时，服务器启动成功，但当我尝试访问我的Web应用程序的任何url时，我收到错误消息：

org.apache.jasper.JasperException: java.lang.IllegalStateException: No Java compiler available
    at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:591) ~[apache-jsp-8.0.27.jar:2.3]
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:397) ~[apache-jsp-8.0.27.jar:2.3]
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) ~[apache-jsp-8.0.27.jar:2.3]
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) ~[apache-jsp-8.0.27.jar:2.3]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812) ~[jetty-servlet-9.2.17.v20160517.jar:9.2.17.v20160517]
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) ~[jetty-servlet-9.2.17.v20160517.jar:9.2.17.v20160517]
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) ~[spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ~[jetty-servlet-9.2.17.v20160517.jar:9.2.17.v20160517]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:108) ~[spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
......................
Caused by: java.lang.IllegalStateException: No Java compiler available
at org.apache.jasper.JspCompilationContext.createCompiler(JspCompilationContext.java:231) ~[apache-jsp-8.0.27.jar:2.3]
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:577) ~[apache-jsp-8.0.27.jar:2.3]
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363) ~[apache-jsp-8.0.27.jar:2.3]

我如何能使它工作？有什么办法吗？如果用spring boot是不可能的，那么有什么替代方法可以让我的应用在带有jsp的嵌入式jetty上工作呢？

这是我在github上的项目链接。请看它并帮助我！如果您尝试在IDE中运行它（建议使用IntelliJ IDEA）并找到问题的原因，那就太好了。

更新1（15.07.2016）

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [sample.jetty.jsp.SampleJettyJspApplication]; nested exception is java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:187) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:321) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:243) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:98) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:523) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RC1.jar:1.4.0.RC1]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RC1.jar:1.4.0.RC1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RC1.jar:1.4.0.RC1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.0.RC1.jar:1.4.0.RC1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.0.RC1.jar:1.4.0.RC1]
    at sample.jetty.jsp.SampleJettyJspApplication.main(SampleJettyJspApplication.java:33) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_65]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_65]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_65]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_65]
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) [idea_rt.jar:na]
Caused by: java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer
    at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:163) ~[spring-core-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:300) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:237) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:204) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:173) ~[spring-context-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    ... 17 common frames omitted
Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContext
    at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_65]
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_65]
    at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_65]
    at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:152) ~[spring-core-4.3.1.RELEASE.jar:4.3.1.RELEASE]
    ... 21 common frames omitted
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_65]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_65]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_65]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_65]
    ... 25 common frames omitted

Answer 1

您正在使用Spring Boot 1.3.6，在留档的JSP限制部分，它说：

Jetty 目前不能用作带有 JSP 的嵌入式容器。

Spring Boot 1.4中有一个增强功能，这意味着只要您使用war打包，JSP就可以与嵌入式Jetty一起使用。如果您不想等待1.4.0发布，增强功能在1.4.0.RC1中，可从https://repo.spring.io/libs-milestone.还有一个可能感兴趣的新示例应用程序。