IntelliJ IDEA Cannot resolve method println(java.lang.String)

IDEA常见错误解决
最新推荐文章于 2025-09-23 10:32:14 发布
原创 最新推荐文章于 2025-09-23 10:32:14 发布 · 1.7w 阅读 · 11 ·
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#intellij idea #报错

本文介绍了一个常见的IntelliJ IDEA开发环境中遇到的问题：当代码仅包含一句System.out.println(“HelloWorld!”);时，IDE报告Cannot resolve method println(java.lang.String)错误。文中提供了解决方案：通过清除IDEA的缓存并重启来修复该问题。

问题

代码只有一句 System.out.println( “Hello World!” );
IDEA确报错 Cannot resolve method println(java.lang.String)
不能解析，且不能自动补全
代码无任何问题，一脸懵逼.jpg
重启都不好使
对，就是莫名其妙抽风了

解决

File -> Invalidate Caches / Restart…
清空缓存就可以了

【Java文件报错】Cannot resolve symbol ‘println‘ 【及解决】
weixin_43031313的博客
03-02 2400
语句进行输出，编译器提示“Cannot resolve symbol ‘println’（无法解释关键字）”, println飘红。报错代码及报错截图如下所示。在Java源代码文件中，使用。
java idea 报错cannot resolve method ‘println(java.lang.String)
qq_43570634的博客
08-19 7647
java idea 报错cannot resolve method ‘println(java.lang.String)
IDEA cannot resolve method
09-23 303
依赖并安装插件 ：settings->plugins->安装lombok插件）若方法由注解处理器动态生成（如 Lombok 的。相关依赖已正确配置（如 Lombok 需要添加。、MyBatis 的。
IDEA 中jsp代码out.print爆红，错误信息：Cannot resolve method ‘print(java.lang.String)‘
qq_29605935的博客
03-29 3028
解决方案 1，清理IDEA缓存 2，检查jsp-api.jar依赖是否正确 3，以上两种方法仍然无法解决问题时，查看IDEA 项目结构中 External Libraries 下的jsp-api.jar下的文件，如果只有一个javax文件夹和一个MATA-INF文件夹，并且javax文件夹下没有任何内容，则说明是IDEA导包出现的问题，按照以下边的步骤解决，如果不是这种情况，请继续寻求其他解决方案。 （1）在Modules中导入jar包的时候，选择导入JARs or directories，在选择jar包时
cannot resolve method ‘println()‘
2301_80628159的博客
03-23 763
idea 中 System.out. println()的println()突然爆红。缓存空间满了需要清理。
cannot resolve method ‘println(java.lang.String)
xdg15294969271的博客
11-24 2238
文章目录1、问题描述2、解决方案 1、问题描述 简直无语，今天上设计模式课设的时候，Ide突然不能用了，一直在报错，System.out.println，后面的println变成红色。 2、解决方案 File -> Invalidate Caches -> Invalidate and Restart就行了。 ...
Cannot resolve method 'println(java.lang.String)'
10-30
看起来你遇到了Java IDE（如IntelliJ IDEA）中的编译错误，提示`cannot resolve method 'println(java.lang.String)'`。这通常表示IDE无法识别`System.out.println`这个方法。解决这个问题的方法如下： **1. 检查...
chatMemory.setRole(msg.type().name()) Cannot resolve method 'name()'
07-23
如果在调用 `name()` 方法时出现 `Cannot resolve method 'name()'` 错误，可能的原因及解决方法如下： ### 1. 确保调用对象是枚举实例 `name()` 方法只能在枚举实例上调用，不能在枚举类本身或其他非枚举对象上...
D:\桌面\apache-tomcat-9.0.106\bin\catalina.bat run [2025-07-01 04:36:23,779] 工件 test1:war exploded: 正在等待服务器连接以启动工件部署… Using CATALINA_BASE: "C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2025.1\tomcat\9af9a62d-8cc4-48aa-b9a7-b9fd6acf1959" Using CATALINA_HOME: "D:\����\apache-tomcat-9.0.106" Using CATALINA_TMPDIR: "D:\����\apache-tomcat-9.0.106\temp" Using JRE_HOME: "C:\Program Files\Java\jdk-21" Using CLASSPATH: "D:\����\apache-tomcat-9.0.106\bin\bootstrap.jar;D:\����\apache-tomcat-9.0.106\bin\tomcat-juli.jar" Using CATALINA_OPTS: "" NOTE: Picked up JDK_JAVA_OPTIONS: --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED 01-Jul-2025 16:36:24.942 警告 [main] org.apache.catalina.startup.ClassLoaderFactory.validateFile Problem with directory [D:\桌面\apache-tomcat-9.0.106\lib], exists: [false], isDirectory: [false], canRead: [false] 01-Jul-2025 16:36:24.945 警告 [main] org.apache.catalina.startup.ClassLoaderFactory.validateFile Problem with directory [D:\桌面\apache-tomcat-9.0.106\lib], exists: [false], isDirectory: [false], canRead: [false] 01-Jul-2025 16:36:27.111 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server.服务器版本: Apache Tomcat/9.0.106 01-Jul-2025 16:36:27.111 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 服务器构建: Jun 5 2025 19:02:30 UTC 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 服务器版本号: 9.0.106.0 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 操作系统名称: Windows 11 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log OS.版本: 10.0 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 架构: amd64 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Java 环境变量: C:\Program Files\Java\jdk-21 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Java虚拟机版本: 21.0.7+8-LTS-245 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM.供应商: Oracle Corporation 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2025.1\tomcat\9af9a62d-8cc4-48aa-b9a7-b9fd6acf1959 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: D:\桌面\apache-tomcat-9.0.106 01-Jul-2025 16:36:27.112 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.base/java.lang=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.base/java.lang.invoke=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.base/java.lang.reflect=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.base/java.io=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.base/java.util=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.base/java.util.concurrent=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Djava.util.logging.config.file=C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2025.1\tomcat\9af9a62d-8cc4-48aa-b9a7-b9fd6acf1959\conf\logging.properties 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 01-Jul-2025 16:36:27.113 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcom.sun.management.jmxremote= 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcom.sun.management.jmxremote.port=1099 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcom.sun.management.jmxremote.ssl=false 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcom.sun.management.jmxremote.password.file=C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2025.1\tomcat\9af9a62d-8cc4-48aa-b9a7-b9fd6acf1959\jmxremote.password 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcom.sun.management.jmxremote.access.file=C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2025.1\tomcat\9af9a62d-8cc4-48aa-b9a7-b9fd6acf1959\jmxremote.access 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Djava.rmi.server.hostname=127.0.0.1 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Djdk.tls.ephemeralDHKeySize=2048 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Djava.protocol.handler.pkgs=org.apache.catalina.webresources 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dsun.io.useCanonCaches=false 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dignore.endorsed.dirs= 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcatalina.base=C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2025.1\tomcat\9af9a62d-8cc4-48aa-b9a7-b9fd6acf1959 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Dcatalina.home=D:\桌面\apache-tomcat-9.0.106 01-Jul-2025 16:36:27.114 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log 命令行参数： -Djava.io.tmpdir=D:\桌面\apache-tomcat-9.0.106\temp 01-Jul-2025 16:36:27.246 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent 使用APR版本[1.7.4]加载了基于APR的Apache Tomcat本机库[1.3.1]。 01-Jul-2025 16:36:27.246 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR功能：IPv6[true]、sendfile[true]、accept filters[false]、random[true]、UDS [true]。 01-Jul-2025 16:36:27.246 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL配置：useAprConnector[false]，useOpenSSL[true] 01-Jul-2025 16:36:27.252 信息 [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL成功初始化 [OpenSSL 3.0.14 4 Jun 2024] 01-Jul-2025 16:36:27.420 信息 [main] org.apache.coyote.AbstractProtocol.init 初始化协议处理器 ["http-nio-8080"] 01-Jul-2025 16:36:27.439 信息 [main] org.apache.catalina.startup.Catalina.load 服务器在[466]毫秒内初始化 01-Jul-2025 16:36:27.534 信息 [main] org.apache.catalina.core.StandardService.startInternal 正在启动服务[Catalina] 01-Jul-2025 16:36:27.535 信息 [main] org.apache.catalina.core.StandardEngine.startInternal 正在启动 Servlet 引擎：[Apache Tomcat/9.0.106] 01-Jul-2025 16:36:27.559 信息 [main] org.apache.coyote.AbstractProtocol.start 开始协议处理句柄["http-nio-8080"] 01-Jul-2025 16:36:27.626 信息 [main] org.apache.catalina.startup.Catalina.start [186]毫秒后服务器启动 已连接到服务器 [2025-07-01 04:36:27,906] 工件 test1:war exploded: 正在部署工件，请稍候… 01-Jul-2025 16:36:30.206 信息 [RMI TCP Connection(4)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJars 至少有一个JAR被扫描用于TLD但尚未包含TLD。 为此记录器启用调试日志记录，以获取已扫描但未在其中找到TLD的完整JAR列表。 在扫描期间跳过不需要的JAR可以缩短启动时间和JSP编译时间。 01-Jul-2025 16:36:30.328 信息 [RMI TCP Connection(4)-127.0.0.1] org.springframework.web.context.ContextLoader.initWebApplicationContext Root WebApplicationContext: initialization started Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary. 01-Jul-2025 16:36:31.054 警告 [RMI TCP Connection(4)-127.0.0.1] org.springframework.context.support.AbstractApplicationContext.refresh Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerServiceImpl': Unsatisfied dependency expressed through field 'customerMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerMapper' defined in file [D:\test5\test1\target\ssm-demo\WEB-INF\classes\com\example\mapper\CustomerMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist 01-Jul-2025 16:36:31.056 严重 [RMI TCP Connection(4)-127.0.0.1] org.springframework.web.context.ContextLoader.initWebApplicationContext Context initialization failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerServiceImpl': Unsatisfied dependency expressed through field 'customerMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerMapper' defined in file [D:\test5\test1\target\ssm-demo\WEB-INF\classes\com\example\mapper\CustomerMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:659) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:953) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:401) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:292) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4059) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4501) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:599) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:571) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:603) at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1746) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:252) at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:803) at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:802) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:449) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:403) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:252) at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:803) at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:802) at java.management/com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:472) at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1472) at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1310) at java.base/java.security.AccessController.doPrivileged(AccessController.java:714) at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1412) at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360) at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200) at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197) at java.base/java.security.AccessController.doPrivileged(AccessController.java:714) at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196) at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:598) at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:844) at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:721) at java.base/java.security.AccessController.doPrivileged(AccessController.java:400) at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:720) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerMapper' defined in file [D:\test5\test1\target\ssm-demo\WEB-INF\classes\com\example\mapper\CustomerMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1534) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1417) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1389) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1309) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656) ... 56 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:628) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1389) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1309) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1519) ... 67 more Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:600) at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:609) at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:219) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1756) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1712) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1452) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ... 76 more Caused by: java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist at org.springframework.core.io.support.ResourceArrayPropertyEditor.setAsText(ResourceArrayPropertyEditor.java:121) at org.springframework.beans.TypeConverterDelegate.doConvertTextValue(TypeConverterDelegate.java:429) at org.springframework.beans.TypeConverterDelegate.doConvertValue(TypeConverterDelegate.java:402) at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:155) at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:590) ... 82 more 01-Jul-2025 16:36:31.057 严重 [RMI TCP Connection(4)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal 一个或多个listeners启动失败，更多详细信息查看对应的容器日志文件 01-Jul-2025 16:36:31.062 严重 [RMI TCP Connection(4)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal 由于之前的错误，Context[/test1_war_exploded]启动失败 01-Jul-2025 16:36:31.069 警告 [RMI TCP Connection(4)-127.0.0.1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc Web应用程序 [test1_war_exploded] 注册了JDBC驱动程序 [com.mysql.cj.jdbc.Driver]，但在Web应用程序停止时无法注销它。 为防止内存泄漏，JDBC驱动程序已被强制取消注册。 [2025-07-01 04:36:31,078] 工件 test1:war exploded: 部署工件时出错。请参阅服务器日志了解详细信息。 01-Jul-2025 16:36:36.025 信息 [mysql-cj-abandoned-connection-cleanup] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading 非法访问：此Web应用程序实例已停止。无法加载[]。为了调试以及终止导致非法访问的线程，将抛出以下堆栈跟踪。 java.lang.IllegalStateException: 非法访问：此Web应用程序实例已停止。无法加载[]。为了调试以及终止导致非法访问的线程，将抛出以下堆栈跟踪。 at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1374) at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:997) at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.checkThreadContextClassLoader(AbandonedConnectionCleanupThread.java:123) at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:90) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) 01-Jul-2025 16:36:37.576 信息 [Catalina-utility-2] org.apache.catalina.startup.HostConfig.deployDirectory 把web 应用程序部署到目录 [D:\桌面\apache-tomcat-9.0.106\webapps\manager] 01-Jul-2025 16:36:37.641 信息 [Catalina-utility-2] org.apache.catalina.startup.HostConfig.deployDirectory Web应用程序目录[D:\桌面\apache-tomcat-9.0.106\webapps\manager]的部署已在[64]毫秒内完成
07-02
Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist ``` ### **错误分析** 1. **根本原因** - 在`...
package mobileshop; import org.apache.catalina.Context; import org.apache.catalina.startup.Tomcat; import org.apache.commons.lang3.StringUtils; import org.springframework.web.servlet.DispatcherServlet; import javax.servlet.ServletRegistration; import java.io.File; import java.net.URL; public class Application { private int port = 8082; private String contextPath = ""; public void start() throws Exception { Tomcat tomcat = new Tomcat(); URL url = getClass().getClassLoader().getResource("spring-mvc.xml"); System.out.println("URL path:" + url.getPath()); String pwd = StringUtils.substringBefore(url.getPath(), "/target/classes"); System.out.println("BaseDir:" + pwd); tomcat.setBaseDir(pwd); tomcat.setPort(port); StringBuilder webAppBuilder = new StringBuilder(); webAppBuilder.append(pwd).append(File.separator).append("target/mobileshop"); String webapp = webAppBuilder.toString(); // 关键：将 addWebapp 的返回值赋值给 ctx 变量 Context ctx = tomcat.addWebapp(contextPath, webapp); tomcat.enableNaming(); // 现在可以使用 ctx 注册 Servlet 了 DispatcherServlet dispatcher = new DispatcherServlet(); ServletRegistration.Dynamic servlet = ctx.addServlet("dispatcher", dispatcher); servlet.setLoadOnStartup(1); servlet.addMapping("/"); ctx.setInitParameter("contextConfigLocation", "classpath:spring-mvc.xml"); tomcat.start(); tomcat.getServer().await(); } public static void main(String[] args) throws Exception { Application starter = new Application(); starter.start(); } }Cannot resolve method 'addServlet' in 'Context'
最新发布
11-11
在 Java 代码中使用 `Context` 对象调用 `addServlet` 方法时出现 `Cannot resolve method 'addServlet' in 'Context'` 错误，可按以下方法解决： ### 检查导入的包 确保正确导入了 `Context` 类和 `addServlet` ...
PS D:\web\VSCodeWeb\实训\webdemo> ^C PS D:\web\VSCodeWeb\实训\webdemo> PS D:\web\VSCodeWeb\实训\webdemo> d:; cd 'd:\web\VSCodeWeb\实训\webdemo'; & 'D:\nvware-dtap\nvware\jdk\bin\java.exe' '-cp' 'C:\Users\32285\AppData\Local\Temp\cp_6rg3wu2cre4f63ek1zn1u3wm0.jar' 'com.hnkj.webdemo.WebdemoApplication' . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.7.15) 2025-06-06 08:25:50.549 INFO 37204 --- [ main] com.hnkj.webdemo.WebdemoApplication : Starting WebdemoApplication using Java 1.8.0_112 on DQR with PID 37204 (D:\web\VSCodeWeb\实训\webdemo\target\classes started by 32285 in D:\web\VSCodeWeb\实训\webdemo) 2025-06-06 08:25:50.551 INFO 37204 --- [ main] com.hnkj.webdemo.WebdemoApplication : No active profile set, falling back to 1 default profile: "default" 2025-06-06 08:25:50.982 INFO 37204 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2025-06-06 08:25:50.996 INFO 37204 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 5 ms. Found 0 JPA repository interfaces. 2025-06-06 08:25:51.556 INFO 37204 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2025-06-06 08:25:51.565 INFO 37204 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2025-06-06 08:25:51.565 INFO 37204 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.79] 2025-06-06 08:25:51.642 INFO 37204 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2025-06-06 08:25:51.642 INFO 37204 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1048 ms 2025-06-06 08:25:51.693 WARN 37204 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Cannot load driver class: com.mysql.cj.jdbc.Driver 2025-06-06 08:25:51.695 INFO 37204 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2025-06-06 08:25:51.707 INFO 37204 --- [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2025-06-06 08:25:51.723 ERROR 37204 --- [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1157) ~[spring-context-5.3.29.jar:5.3.29] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:911) ~[spring-context-5.3.29.jar:5.3.29] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.29.jar:5.3.29] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.15.jar:2.7.15] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731) [spring-boot-2.7.15.jar:2.7.15] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) [spring-boot-2.7.15.jar:2.7.15] at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-2.7.15.jar:2.7.15] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303) [spring-boot-2.7.15.jar:2.7.15] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292) [spring-boot-2.7.15.jar:2.7.15] at com.hnkj.webdemo.WebdemoApplication.main(WebdemoApplication.java:10) [classes/:na] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.29.jar:5.3.29] ... 21 common frames omitted Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.29.jar:5.3.29] at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.29.jar:5.3.29] ... 35 common frames omitted Caused by: java.lang.IllegalStateException: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.util.Assert.state(Assert.java:97) ~[spring-core-5.3.29.jar:5.3.29] at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.determineDriverClassName(DataSourceProperties.java:175) ~[spring-boot-autoconfigure-2.7.15.jar:2.7.15] at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.initializeDataSourceBuilder(DataSourceProperties.java:125) ~[spring-boot-autoconfigure-2.7.15.jar:2.7.15] at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.createDataSource(DataSourceConfiguration.java:48) ~[spring-boot-autoconfigure-2.7.15.jar:2.7.15] at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Hikari.dataSource(DataSourceConfiguration.java:90) ~[spring-boot-autoconfigure-2.7.15.jar:2.7.15] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_112] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_112] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_112] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.29.jar:5.3.29] ... 36 common frames omitted PS D:\web\VSCodeWeb\实训\webdemo> 分析这个问题并给出详细的解决方法
06-07
8.**清理IDE缓存并重启**：-在IDE中（如IntelliJIDEA）执行以下操作：-清理项目：`mvnclean`-刷新Maven依赖：在IDE中点击Maven工具的刷新按钮-重启IDE：文件→无效缓存并重启###根本原因分析：错误`...
Cannot resolve method println(java.lang.String)
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Intellij Idea下Maven项目下出现cannot resolve method 'print(java.lang.String)'
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