Java Spring启动应用程序启动后失败-尝试调用不存在的方法。尝试从以下位置进行

我是Spring Boot的新手，我正在尝试用REST Api构建一个简单的应用程序，在启动应用程序时，我立即遇到了这个错误：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-01-24 20:08:19.505 ERROR 11344 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

    org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.requestMappingHandlerAdapter(WebMvcAutoConfiguration.java:369)

The following method did not exist:

    'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.requestMappingHandlerAdapter(org.springframework.web.accept.ContentNegotiationManager, org.springframework.format.support.FormattingConversionService, org.springframework.validation.Validator)'

The method's class, org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration, is available from the following locations:

    jar:file:/C:/Users/user/.m2/repository/org/springframework/spring-webmvc/5.1.3.RELEASE/spring-webmvc-5.1.3.RELEASE.jar!/org/springframework/web/servlet/config/annotation/DelegatingWebMvcConfiguration.class

The class hierarchy was loaded from the following locations:

    org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration: file:/C:/Users/user/.m2/repository/org/springframework/spring-webmvc/5.1.3.RELEASE/spring-webmvc-5.1.3.RELEASE.jar
    org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport: file:/C:/Users/user/.m2/repository/org/springframework/spring-webmvc/5.1.3.RELEASE/spring-webmvc-5.1.3.RELEASE.jar


Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration


Process finished with exit code 0

我还没有完成应用程序的开发，但由于这个错误，我无法继续

到目前为止，我的课程有：

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>2.4.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>micro1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>micro1</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</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-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
<!--            <version>1.4.200</version>-->
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
    </dependencies>


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




            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.19.1</version>
            </plugin>
        </plugins>
    </build>

</project>

服务：

package com.example.micro1.services;


import com.example.micro1.entities.User;
import com.example.micro1.repositories.Repository;
import lombok.Data;

@org.springframework.stereotype.Service
@Data
public class Service {
    private final Repository repository;

    public User add(User user){
        return repository.save(user);
    }
}

存储库：

package com.example.micro1.repositories;

import com.example.micro1.entities.User;
import org.springframework.data.jpa.repository.JpaRepository;

@org.springframework.stereotype.Repository
public interface Repository extends JpaRepository<User, Integer> {
    @Override
    <S extends User> S save(S s);
}

application.properties：

#h2
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.h2.console.enabled=true

应用程序类：

package com.example.micro1;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Micro1Application {

    public static void main(String[] args) {
        SpringApplication.run(Micro1Application.class, args);
    }

}

请告诉我，如果还有什么我应该写在这里。。。

---

谢谢

starter

spring boot starter web

本身包含这些依赖项

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-web</artifactId>
  <version>5.3.3</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>5.3.3</version>
  <scope>compile</scope>
</dependency>

org.springframework
弹簧网
5.3.3
编译
org.springframework
SpringWebMVC
5.3.3
编译

此外，在pom.xml中添加以下内容：

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.1.3.RELEASE</version>
    </dependency>

org.springframework
SpringWebMVC
5.1.3.1发布

因此，在启动应用程序时，类路径不明确。我想这是你问题的原因。 Spring引导启动器省去了显式指定declare依赖项的麻烦。

---

尝试删除spring webmvc的依赖项。

我在运行spring Web启动应用程序时遇到了同样的问题。但我收到了以下错误消息：

***************************
应用程序无法启动
***************************
说明：
试图调用不存在的方法。从以下位置进行了尝试：
org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$enablewbmvcconfiguration.configureHandlerExceptionResolver（WebMvcAutoConfiguration.java:519）
以下方法不存在：
org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.addDefaultHandlerExceptionResolver（Ljava/util/List；）V
该方法的类org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration可从以下位置获得：
jar:file:/Users/itzhouq/dev/mavne_repository/org/springframework/boot/springboot autoconfigure/2.1.6.RELEASE/spring-boot-autoconfigure-2.1.6.RELEASE.jar/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class
它是从以下位置加载的：
文件：/Users/itzhouq/dev/mavne_repository/org/springframework/boot/springboot autoconfigure/2.1.6.RELEASE/spring-boot-autoconfigure-2.1.6.RELEASE.jar
行动：
请更正应用程序的类路径，使其包含org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration的单个兼容版本

这可能是spring boot autoconfigure的异常。因此，我检查了它的依赖关系

org.springframework.boot:spring-boot-web:2.2.1.RELEASE

-->

org.springframework.boot:spring-boot-starter:2.2.1.RELEASE

-->

org.springframework.boot:springboot自动配置：2.2.1.RELEASE（因与2.1.6.RELEASE冲突而省略）

。显然，

自动配置

由于版本冲突而丢失。为了解决此问题，我添加了以下依赖项：

org.springframework.boot
弹簧靴自动配置
2.2.1.发布

确认此依赖项已添加到模块中，并重新运行应用程序

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-web</artifactId>
  <version>5.3.3</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>5.3.3</version>
  <scope>compile</scope>
</dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.1.3.RELEASE</version>
    </dependency>