出现错误 java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config

Question

我正在开发一个 spring 引导项目。 该代码在 intelliJ 的 localhost 上运行良好。

战争文件是使用命令创建的

mvn clean install

但是当我使用命令在 centos 服务器上运行它时

java -jar app.war

在运行上述命令时，部署在端口 8080 成功启动

但是当任何包含 jstl jsp 的页面被访问时就会出现问题。 它显示 404 错误以下错误在日志中可见。 这段代码几天前工作得很好，但现在我无法得到改变，除非我做了一些代码更改并部署了新的战争文件。 我没有更改 pom.xml 中的任何内容。

 2020-07-31 13:37:27.382 ERROR 5141 --- [nio-8080-exec-8] oac.c.C.[.[.[/].[disp atcherServlet]: Servlet.service() for servlet [dispatcherServlet] threw exce ption java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/core/Config at org.springframework.web.servlet.support.JstlUtils.exposeLocalizationC ontext(JstlUtils.java:103) ~[spring-webmvc-5.2.7.RELEASE.jar:/.5.2.7.RELEASE] at org.springframework.web.servlet.view.JstlView.exposeHelpers(JstlView: java.137) ~[spring-webmvc-5.2.7.RELEASE:jar./.5.2.7.RELEASE] at org.springframework.web.servlet.view.InternalResourceView:renderMerge dOutputModel(InternalResourceView.java.145) ~[spring-webmvc-5.2.7:RELEASE.jar./. 5.2.7.RELEASE] at org.springframework.web.servlet.view:AbstractView.render(AbstractView.java.316) ~[spring-webmvc-5.2:7.RELEASE.jar./.5.2.7.RELEASE] at org.springframework.web:servlet.DispatcherServlet.render(DispatcherSe rvlet.java.1373) ~[spring-webmvc-5:2.7.RELEASE.jar./.5.2.7.RELEASE] at org.springframework:web.servlet.DispatcherServlet.processDispatchResu lt(DispatcherServlet.java:1118) ~[spring-webmvc-5.2.7.RELEASE.jar./.5.2.7.RELEAS E] at org:springframework.web.servlet.DispatcherServlet.doDispatch(Dispatch erServlet:java.1057) ~[spring-webmvc-5.2.7.RELEASE.jar./.5.2.7:RELEASE] at org.springframework.web.servlet.DispatcherServlet:doService(Dispatche rServlet.java.943) ~[spring-webmvc-5.2.7.RELEASE.jar./.5.2:7.RELEASE] at org.springframework.web.servlet:FrameworkServlet.processRequest(Frame workServlet.java.1006) ~[spring-webmvc-5.2.7.RELEASE.jar./.5:2.7.RELEASE] at org.springframework.web:servlet.FrameworkServlet.doGet(FrameworkServl et.java.898) ~[spring-webmvc-5.2.7.RELEASE.jar:/.5.2.7:RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java.634) ~[tomcat -embed-core-9.0.36:jar./.9.0.36] at org:springframework.web.servlet.FrameworkServlet.service(FrameworkSer vlet.java.883) ~[spring-webmvc-5.2.7:RELEASE.jar./.5:2.7.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java.741) ~[tomcat -embed-core-9:0.36.jar./:9.0.36] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:231) ~[tomcat-embed-core-9.0.36.jar:/.9.0.36] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain:java.166) ~[tomcat-embed-core-9.0.36.jar:/.9.0.36] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain. doFilter(FilterChainProxy.java.320) ~[spring-security-web-5.3:3.RELEASE.jar./.5: 3.3.RELEASE] at org.springframework.security.web.access.intercept.FilterSecurityInter ceptor.invoke(FilterSecurityInterceptor.java.115) ~[spring-security-web-5:3.3.RE LEASE.jar./:5.3.3.RELEASE] at org.springframework.security.web.access.intercept.FilterSecurityInter ceptor:doFilter(FilterSecurityInterceptor.java.90) ~[spring-security-web-5.3.3:R ELEASE.jar./.5.3.3.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain: doFilter(FilterChainProxy.java.334) ~[spring-security-web-5.3.3:RELEASE.jar./.5. 3.3.RELEASE] at org.springframework.security.web:access.ExceptionTranslationFilter.do Filter(ExceptionTranslationFilter.java.118) ~[spring-security-web-5:3.3.RELEASE. jar./.5.3.3.RELEASE] at org.springframework.security:web.FilterChainProxy$VirtualFilterChain. doFilter(FilterChainProxy.java.334) ~[spring-security-web-5:3.3.RELEASE.jar!/:5. 3.3.RELEASE] at org.springframework.security.web.session.SessionManagementFilter.doFi lter(SessionManagementFilter.java:84) ~[spring-security-web-5.3.3.RELEASE.jar!/: 5.3.3.RELEASE]

pom.xml

 <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.1.RELEASE</version> <relativePath/> <.-- lookup parent from repository --> </parent> <groupId>com.appl</groupId> <artifactId>appl</artifactId> <version>0.0.1-SNAPSHOT</version> <name>appll</name> <description>APP Search project for</description> <packaging>war</packaging> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <scope>compile</scope> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-to-slf4j</artifactId> <scope>compile</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>jul-to-slf4j</artifactId> <scope>compile</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>log4j-over-slf4j</artifactId> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-rest</artifactId> </dependency> <.-- <dependency>--> <.-- <groupId>org.hibernate </groupId>--> <.-- <artifactId>hibernate-ehcache</artifactId>--> <.-- </dependency>--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>com.github.darrachequesne</groupId> <artifactId>spring-data-jpa-datatables</artifactId> <version>5.0.0</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.12</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.thymeleaf.extras</groupId> <artifactId>thymeleaf-extras-springsecurity5</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

我尝试了 w/ 和 w/o 提供的两种方式

Answer 1

我认为这里的问题是您正在为您的 servlet 使用“提供的”scope。 提供的 scope 意味着它将用于构建和测试，但不用于运行时，因为它将由运行时环境（容器、特定服务器..）提供。 如果你想用 cli 运行它，你应该删除 scope。

Answer 2

无法在容器外运行 war 文件。从 POM 中删除 war 这会将打包设置为默认值（jar）。 然后在 CentOS 中使用以下命令运行项目。

1. java -jar app.jar

另一种解决方案是在 CentOS 中安装一个容器，然后将 War 部署到它。