【问题标题】:Spring Boot throws NoSuchMethodError org.springframework.util.StringUtils.isEmpty on external tomcat deploymentSpring Boot 在外部 tomcat 部署中抛出 NoSuchMethodError org.springframework.util.StringUtils.isEmpty
【发布时间】:2016-02-13 00:15:54
【问题描述】:

我使用 spring-boot 将 spring rest 服务部署为外部 tomcat 上的 war 文件。

引起:java.lang.NoSuchMethodError: org.springframework.util.StringUtils.isEmpty(Ljava/lang/Object;)Z

spring 版本由 maven 中的 spring-boot-starter-parent 管理,但我总是遇到不兼容的 spring 版本的典型异常。我测试:

  • spring-boot-starter-parent v*1.2.7.RELEASE* 和 v*1.3.0.BUILD-SNAPSHOT*

  • tomcat v8.0.3 和 8.0.28

奇怪的是我也部署为无错误的可运行 jar 文件。我也反编译了war文件,在\WEB-INF\lib\spring-core-4.1.8.RELEASE中找到了org.springframework.util.StringUtils.isEmpty

我还检查了 maven 调试输出,发现只有一个具有正确版本 (4.1.8.RELEASE) 的 spring-core 工件。

可能tomcat内部也使用spring-core,有冲突吗?

Tomcat 日志文件中的异常部署:

Caused by: java.lang.NoSuchMethodError: org.springframework.util.StringUtils.isEmpty(Ljava/lang/Object;)Z
    at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLogger(LogbackLoggingSystem.java:159)
    at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:91)
    at org.springframework.boot.logging.LoggingApplicationListener.onApplicationStartedEvent(LoggingApplicationListener.java:155)
    at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:141)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:151)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:128)
    at org.springframework.boot.context.event.EventPublishingRunListener.publishEvent(EventPublishingRunListener.java:100)
    at org.springframework.boot.context.event.EventPublishingRunListener.started(EventPublishingRunListener.java:54)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:278)
    at org.springframework.boot.context.web.SpringBootServletInitializer.run(SpringBootServletInitializer.java:134)
    at org.springframework.boot.context.web.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:125)
    at org.springframework.boot.context.web.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:81)
    at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:175)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5170)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    ... 45 more

我的 pom.xml:

...
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.7.RELEASE</version>
</parent>
<properties>
    <java.version>1.8</java.version>
</properties>
<dependencies>
        <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jms</artifactId>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>de.cherrypit</groupId>
        <artifactId>lisa</artifactId>
        <version>0.1.1-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.0.2.Final</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.activemq</groupId>
        <artifactId>activemq-broker</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>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>
<repositories>
    <repository>
        <id>spring-releases</id>
        <url>https://repo.spring.io/libs-release</url>
    </repository>
</repositories>
<pluginRepositories>
    <pluginRepository>
        <id>spring-releases</id>
        <url>https://repo.spring.io/libs-release</url>
    </pluginRepository>
</pluginRepositories>
<packaging>war</packaging>
...

【问题讨论】:

  • 考虑将 ${spring.version} 添加到您的 Spring 依赖项中。
  • 啊,是的!你是对的。它是一个弹簧类方法:)
  • @JustinKSU 如果我添加 spring.version 我会变成这个警告:This expression evaluates to 4.1.8.RELEASE The property is defined in org.springframework.boot:spring-boot-dependencies:1.2.7.RELEASE
  • @JustinKSU 我得到了与 ${spring.version} 相同的异常
  • 如果你得到一个 NoSuchMethod,很可能这个类已经在不同的版本中加载了。找出答案的最佳方法是检查依赖项,例如:mvn dependency:tree &gt; c:\dep.txt

标签: java spring tomcat spring-boot nosuchmethoderror


【解决方案1】:

我发现了我的错误。我还会在我的项目共享库中添加 spring-android-core lisa

不要在类路径中使用 spring-android-corespring-core

【讨论】:

    猜你喜欢
    • 2016-03-28
    • 2016-12-29
    • 2017-11-23
    • 1970-01-01
    • 1970-01-01
    • 1970-01-01
    • 2021-05-14
    • 2018-06-26
    • 1970-01-01
    相关资源
    最近更新 更多