1. 报错

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.security.oauth2.server.servlet.OAuth2AuthorizationServerPropertiesMapper.asAuthorizationServerSettings(OAuth2AuthorizationServerPropertiesMapper.java:55)

The following method did not exist:

    'org.springframework.security.oauth2.server.authorization.settings.AuthorizationServerSettings$Builder org.springframework.security.oauth2.server.authorization.settings.AuthorizationServerSettings$Builder.multipleIssuersAllowed(boolean)'

The calling method's class, org.springframework.boot.autoconfigure.security.oauth2.server.servlet.OAuth2AuthorizationServerPropertiesMapper, was loaded from the following location:

    jar:file:/C:/../.m2/repository/org/springframework/boot/spring-boot-autoconfigure/3.3.4/spring-boot-autoconfigure-3.3.4.jar!/org/springframework/boot/autoconfigure/security/oauth2/server/servlet/OAuth2AuthorizationServerPropertiesMapper.class

The called method's class, org.springframework.security.oauth2.server.authorization.settings.AuthorizationServerSettings$Builder, is available from the following locations:

    jar:file:/C:/../.m2/repository/org/springframework/security/spring-security-oauth2-authorization-server/1.1.2/spring-security-oauth2-authorization-server-1.1.2.jar!/org/springframework/security/oauth2/server/authorization/settings/AuthorizationServerSettings$Builder.class

The called method's class hierarchy was loaded from the following locations:

    org.springframework.security.oauth2.server.authorization.settings.AuthorizationServerSettings.Builder: file:/C:/../.m2/repository/org/springframework/security/spring-security-oauth2-authorization-server/1.1.2/spring-security-oauth2-authorization-server-1.1.2.jar
    org.springframework.security.oauth2.server.authorization.settings.AbstractSettings.AbstractBuilder: file:/C:/../.m2/repository/org/springframework/security/spring-security-oauth2-authorization-server/1.1.2/spring-security-oauth2-authorization-server-1.1.2.jar


Action:

Correct the classpath of your application so that it contains compatible versions of the classes org.springframework.boot.autoconfigure.security.oauth2.server.servlet.OAuth2AuthorizationServerPropertiesMapper and org.springframework.security.oauth2.server.authorization.settings.AuthorizationServerSettings$Builder

Disconnected from the target VM, address: '127.0.0.1:51495', transport: 'socket'

Process finished with exit code 1

2. 原因

日志第一行即指出，系统试图调用一个不存在的方法（An attempt was made to call a method that does not exist.）。

接着的 The following method did not exist、The calling method's class、The called method's class 分别告诉开发人员以下信息：

• 不存在的方法是 AuthorizationServerSettings.Builder.multipleIssuersAllowed(boolean)。
• 调用该方法的类是 org.springframework.boot 的 OAuth2AuthorizationServerPropertiesMapper，版本是 3.3.4。
• 被调用的类是 org.springframework.security 的 AuthorizationServerSettings$Builder，版本是 1.1.2。

结合 Action 可以知道，报错的原因是 org.springframework.boot 和 org.springframework.security 的版本不匹配。

具体是，系统使用了 Spring Boot 3.3.4，并尝试调用 AuthorizationServerSettings.Builder.multipleIssuersAllowed(boolean) 方法，而它使用的 Spring Authorization Server 版本中还没有这个方法。

3. 解决方案

方案一

保持 Spring Boot 3.3.4 的版本不变，将 org.springframework.security 的版本升级。

如下：

• 修改前的 pom.xml

 <dependency>
     <groupId>org.springframework.security</groupId>
     <artifactId>spring-security-oauth2-authorization-server</artifactId>
     <version>1.1.2</version>
 </dependency>

• 修改后的 pom.xml

<!-- 去掉 version 标签，由 Spring Boot 自动引入匹配的版本 -->
 <dependency>
     <groupId>org.springframework.security</groupId>
     <artifactId>spring-security-oauth2-authorization-server</artifactId>
 </dependency>

方案二

保持 org.springframework.security 的版本不变，将 Spring Boot 3.3.4 的版本降级。