1、受Springboot版本升级影响的包
- springboot 1.5.21.RELEASE
- spring-boot-starter
- spring-boot-starter-web
- spring-boot-starter-test
- spring-boot-devtools
- spring-boot-starter-cache
- spring-boot-starter-security
- spring-boot-starter-aop
- activiti 5.22.0
- activiti-spring-boot-starter-basic
- activiti-modeler
- activiti-diagram-rest
- druid-spring-boot-starter 1.1.6
- jasypt-spring-boot-starter 1.13
- google-gson 2.2.4
2、处理更新至2.1.7.RELEASE后项目爆红部分
2.1. 启动类SpringBootServletInitializer标红报错
import org.springframework.boot.web.support.SpringBootServletInitializer 过期
解决方式：import org.springframework.boot.web.servlet.support.SpringBootServletInitializer
2.2 @Order(SecurityProperties.ACCESS_OVERRIDE_ORDER) 找不到变量
解决方式：SecurityProperties no longer defines the ACCESS_OVERRIDE_ORDER constant for the @Order annotation. However, Spring Boot no longer defines any security details if the application does, so we do not need the @Order annotation on the security @Configuration class and can be removed.
3、启动项目报错
3.1 java.lang.IllegalStateException: Failed to introspect Class [com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure] from ClassLoader
解决方式：将druid升级至1.1.18
3.2 Failed to instantiate [org.springframework.validation.beanvalidation.MethodValidationPostProcessor]: Factory method 'methodValidationPostProcessor' threw exception; nested exception is java.lang.StackOverflowError
解决方式：将jasypt升级至2.1.1
3.3 The following method did not exist: com.google.gson.GsonBuilder.setLenient()Lcom/google/gson/GsonBuilder
解决方式：将google.gson升级至2.8.5
3.4 java.io.FileNotFoundException: class path resource [org/springframework/security/config/annotation/authentication/configurers/GlobalAuthenticationConfigurerAdapter.class] cannot be opened because it does not exist
解决方式：启动类增加注解
@SpringBootApplication(exclude = {org.activiti.spring.boot.SecurityAutoConfiguration.class})
4、项目运行中功能出现兼容问题
4.1 SpringBoot2.0 从mysql 查询timestamp类型的字段时，会自动转换为UTC格式，并非之前的时间戳
解决方式：配置文件增加spring.jackson.serialization.write-dates-as-timestamps= true
4.2 文件上传大小配置更换，原配置方式：spring.http.multipart
解决方式：修改为spring.servlet.multipart
4.3 如果使用外置Tomcat，建议使用Tomcat 8.x以上版本，实际使用8.5.35运行正常