SpringBoot项目版本升级：从1.5.3升级到2.1.8版本

SpringBoot项目版本升级：从1.5.3升级到2.1.8版本 前言

简单记录一次本人在自己的SpringBoot项目project-template中，把1.5.3版本升级到2.1.8版本时升级的步骤，及遇到的问题。

提升parent版本号

更改pom文件中parent的版本号

<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.8.RELEASE</version> <relativePath /> </parent> 修改yml文件中的部分配置

在1.5版本中，部分配置与2.1版本有些不同

应用名及上下文

1.5版本

server: application-display-name: ProjectTemplate-Web context-path: /project

2.1版本

server: servlet: application-display-name: ProjectTemplate-Web context-path: /project 文件上传

1.5版本

spring: http: multipart: location: E:/dev/Project/work/project_data/projettemplate/temp/dev #文件临时目录 max-request-size: 40MB max-file-size: 40MB

2.1版本

spring: servlet: multipart: location: E:/dev/Project/work/project_data/projettemplate/temp/dev # 文件临时目录 max-request-size: 40MB max-file-size: 40MB mysql连接

1.5版本

spring: datasource: url: jdbc:mysql://localhost:3306/projettemplate?useUnicode=true&useSSL=false&characterEncoding=utf-8&autoReconnect=true&serverTimezone=GMT username: root password: root type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.cj.jdbc.Driver

2.1版本

spring: datasource: druid: url: jdbc:mysql://localhost:3306/projettemplate?useUnicode=true&useSSL=false&characterEncoding=utf-8&autoReconnect=true&serverTimezone=GMT username: root password: root db-type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.cj.jdbc.Driver redis配置

1.5版本

spring: redis: # REDIS (RedisProperties) database: 0 host: 127.0.0.1 port: 6379 timeout: 2000 pool: max-active: 8 max-wait: -1 max-idle: 8 min-idle: 0

2.1版本

spring: redis: # REDIS (RedisProperties) database: 0 host: 127.0.0.1 port: 6379 timeout: 2000 jedis: pool: max-idle: 8 max-wait: -1 启动项目遇到的问题 druid-spring-boot-starter版本过低报异常

当版本为1.1.6时，报异常：

... ... Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] ... ... Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/autoconfigure/jdbc/metadata/DataSourcePoolMetadataProvider ... ... java.lang.IllegalStateException: Failed to introspect Class [com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] ... ... Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/autoconfigure/jdbc/metadata/DataSourcePoolMetadataProvider ... ... Caused by: java.lang.ClassNotFoundException: org.springframework.boot.autoconfigure.jdbc.metadata.DataSourcePoolMetadataProvider

升级为1.1.10版本即可

<dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> SpringSecurity的AuthenticationManager启动报异常

当报异常：

A component required a bean of type 'org.springframework.security.authentication.AuthenticationManager' that could not be found

在SpringSecurity文件中重写即可

@Bean(name = BeanIds.AUTHENTICATION_MANAGER) @Override public AuthenticationManager authenticationManagerBean() throws Exception { return super.authenticationManagerBean(); } 其他

当报以下异常：

The bean 'userDetailsServiceImpl', defined in class path resource [com/itmacy/dev/auth/security/SecurityConfig.class], could not be registered. A bean with that name has already been defined in file [/Users/chenmeixuan/macy/dev/project/study/webBack/project-template/target/project-template-1.0.0-SNAPSHOT_20200215-1336/classes/com/itmacy/dev/auth/security/UserDetailsServiceImpl.class] and overriding is disabled.

在yml文件中添加以下配置即可

spring: main: allow-bean-definition-overriding: true

完结，撒花。。。