我有一个问题。试图更改版本(如网上所说)，但无济于事。我已经阅读了那些答案 Correct the classpath of your application so that it contains a single, compatible version of org.springframework.plugin.core.PluginRegistry但它也没有帮助。

问题:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter

控制台:

***************************
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.http.HttpMessageConverters.configurePartConverters(HttpMessageConverters.java:140)

The following method did not exist:

    'java.util.List org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter.getPartConverters()'

The method's class, org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter, is available from the following locations:

    jar:file:/C:/Users/1/.m2/repository/org/springframework/spring-web/5.2.8.RELEASE/spring-web-5.2.8.RELEASE.jar!/org/springframework/http/converter/support/AllEncompassingFormHttpMessageConverter.class

The class hierarchy was loaded from the following locations:

    org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter: file:/C:/Users/1/.m2/repository/org/springframework/spring-web/5.2.8.RELEASE/spring-web-5.2.8.RELEASE.jar
    org.springframework.http.converter.FormHttpMessageConverter: file:/C:/Users/1/.m2/repository/org/springframework/spring-web/5.2.8.RELEASE/spring-web-5.2.8.RELEASE.jar

Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter

我的 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>2.4.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example.alpha</groupId>
    <artifactId>bank</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>bank</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</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.2.3.RELEASE</version>
        </dependency>

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

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

            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>2.11.3</version>
            </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

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

    </dependencies>

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

</project>

最佳答案

由于 Maven 为我们管理来自指定父项目 spring-boot-starter-parent 的正确依赖层次结构，我们不需要再为子项目指定版本信息，例如 <version>5.2.3.RELEASE</version>对于您的情况下的以下依赖项:

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.2.3.RELEASE</version>
</dependency>

https://stackoverflow.com/questions/65572936/