Spring boot集成activiti时，启动报错问题

我用的activiti版本是5.22

<dependency>
   <groupId>org.activiti</groupId>
   <artifactId>activiti-spring-boot-starter-basic</artifactId>
   <version>5.22.0</version>
</dependency>

启动报错：

nested exception is java.io.FileNotFoundException: class path resource [org/springframework/security/config/annotation/authentication/configurers/GlobalAuthenticationConfigurerAdapter.class] cannot be opened because it does not exist

原因：

SpringBoot 2.0的start中默认有一个"spring-boot-autoconfigure-2.0..RELEASE.jar"，如果你还引用了activiti的"activiti-spring-boot-starter-rest-api.jar"包，需要将两个包中的 SecurityAutoConfiguration.class 都排除。

解决方法：

@SpringBootApplication注解后面改成这样

@SpringBootApplication(exclude={
  org.activiti.spring.boot.SecurityAutoConfiguration.class,
  SecurityAutoConfiguration.class
})