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java.lang.NoClassDefFoundError:org/springframework/web/util/UriTemplateHandler_Java_Spring Boot - Fatal编程技术网

java.lang.NoClassDefFoundError:org/springframework/web/util/UriTemplateHandler

java.lang.NoClassDefFoundError:org/springframework/web/util/UriTemplateHandler,java,spring-boot,Java,Spring Boot,我有一个使用Spring初始值设定项创建的基本SpringBoot应用程序。当我尝试启动SpringBoot服务器(使用maven插件(SpringBoot:start))时,会出现以下错误 java.lang.NoClassDefFoundError: org/springframework/web/util/UriTemplateHandler位于 java.lang.Class.getDeclaredConstructors0(本机方法)~[na:1.8.0_60] 位于java.lang

我有一个使用Spring初始值设定项创建的基本SpringBoot应用程序。当我尝试启动SpringBoot服务器(使用maven插件(SpringBoot:start))时,会出现以下错误

java.lang.NoClassDefFoundError: org/springframework/web/util/UriTemplateHandler位于 java.lang.Class.getDeclaredConstructors0(本机方法)~[na:1.8.0_60] 位于java.lang.Class.privateGetDeclaredConstructors(Class.java:2671) ~(na:1.8.060)at getDeclaredConstructors(Class.java:2020) ~(na:1.8.060)at org.springframework.boot.context.properties.ConfigurationPropertiesBindConstructorProvider.findConstructorBindingAnnotatedConstructor(ConfigurationPropertiesBindConstructorProvider.java:62) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]位于 org.springframework.boot.context.properties.ConfigurationPropertiesBindConstructorProvider.getBindConstructor(ConfigurationPropertiesBindConstructorProvider.java:48) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]位于 org.springframework.boot.context.properties.ConfigurationPropertiesBean$BindMethod.forType(ConfigurationPropertiesBean.java:311) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]位于 org.springframework.boot.context.properties.ConfigurationPropertiesBeanDefinitionValidator.validate(ConfigurationPropertiesBeanDefinitionValidator.java:63) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]位于 org.springframework.boot.context.properties.ConfigurationPropertiesBeanDefinitionValidator.postProcessBeanFactory(ConfigurationPropertiesBeanDefinitionValidator.java:45) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]位于 org.springframework.context.support.postprocessorregistrationlegate.invokeBeanFactoryPostProcessors(postprocessorregistrationlegate.java:286) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]at org.springframework.context.support.postprocessorregistrationlegate.invokeBeanFactoryPostProcessors(postprocessorregistrationlegate.java:174) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]

这是我的pom文件

    <?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>2.2.4.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.cgtm</groupId>
    <artifactId>validator</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>validator</name>
    <description>Validator</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.1.6.RELEASE</version>
        </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>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.2</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Spring boot的版本是2.2.4,它需要Spring 5(基本上它附带了一个预定义的Spring版本)

另一方面,您使用的是“硬编码”SpringWeb4.1.4,这是错误的:

 <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>4.1.6.RELEASE</version>
 </dependency>
最后一件事,您使用的是lombok,这当然很好(我的意思是spring可以很好地使用lombok),但是spring boot maven插件仍然会将其打包到工件中,尽管提供了
范围。如果您希望将其从最终工件中排除,您必须配置spring boot maven插件本身来实现这一点


阅读了解更多信息

您是否在
eclipse上运行
?如果您在eclipse上运行,请打开项目的属性(例如,在项目浏览器中右键单击项目名称并选择“属性”)。选择“部署程序集”。单击右边空白处的“添加…”按钮。选择“Java构建路径条目”从指令类型菜单中,单击“下一步”。从Java构建路径条目菜单中选择“Maven依赖项”,然后单击“完成”。您应该看到添加到Web部署程序集定义中的“Maven依赖项”。
 <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>4.1.6.RELEASE</version>
 </dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
  <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
  </dependency>