SpringBoot升级全纪录之项目启动
- [1、错误: java.nio.charset.MalformedInputException: Input length = 1](#1、错误: java.nio.charset.MalformedInputException: Input length = 1)
- [2、java.lang.NoClassDefFoundError: ch/qos/logback/core/util/StatusPrinter2](#2、java.lang.NoClassDefFoundError: ch/qos/logback/core/util/StatusPrinter2)
- [3、Logging system failed to initialize using configuration from 'null'](#3、Logging system failed to initialize using configuration from 'null')
- [4、java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ser/std/ToStringSerializerBase](#4、java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ser/std/ToStringSerializerBase)
- [5、Caused by: java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required](#5、Caused by: java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required)
- 6、程序包com.baomidou.mybatisplus.generator不存在
- [7、Invalid value type for attribute 'factoryBeanObjectType': java.lang.String](#7、Invalid value type for attribute 'factoryBeanObjectType': java.lang.String)
- [8、Bean named 'redisTemplate' is expected to be of type 'org.springframework.data.redis.core.StringRedisTemplate' but was actually of type 'org.springframework.data.redis.core.RedisTemplate'](#8、Bean named ‘redisTemplate’ is expected to be of type ‘org.springframework.data.redis.core.StringRedisTemplate’ but was actually of type ‘org.springframework.data.redis.core.RedisTemplate’)
- [9、No data sources are configured to run this SQL and provide advanced code assistance. Disable this inspection via problem menu (Alt+Enter).](#9、No data sources are configured to run this SQL and provide advanced code assistance. Disable this inspection via problem menu (Alt+Enter).)
- [10、org.apache.catalina.core.StandardService stopInternal](#10、org.apache.catalina.core.StandardService stopInternal)
- [11、Initialization Sequence datacenterId:16 workerId:17](#11、Initialization Sequence datacenterId:16 workerId:17)
- [12、 Bean named 'ddlApplicationRunner' is expected to be of type 'org.springframework.boot.Runner' but was actually of type 'org.springframework.beans.factory.support.NullBean'](#12、 Bean named 'ddlApplicationRunner' is expected to be of type 'org.springframework.boot.Runner' but was actually of type 'org.springframework.beans.factory.support.NullBean')
- [13、Access denied for user 'root'@'127.0.0.1' (using password: YES)](#13、Access denied for user ‘root‘@‘127.0.0.1‘ (using password: YES))
- END
1、错误: java.nio.charset.MalformedInputException: Input length = 1
原因：项目编码问题
解决：https://blog.csdn.net/qq_38254635/article/details/141018793
2、java.lang.NoClassDefFoundError: ch/qos/logback/core/util/StatusPrinter2
原因：Maven包冲突
解决：https://blog.csdn.net/qq_38254635/article/details/141019735
3、Logging system failed to initialize using configuration from 'null'
原因：缺少 logback-spring.xml 配置文件
解决：https://blog.csdn.net/qq_38254635/article/details/141021782
4、java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ser/std/ToStringSerializerBase
原因：Maven包版本有误，类不存在，升级至2.17.1
解决：https://blog.csdn.net/qq_38254635/article/details/141024403
5、Caused by: java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required
原因：升级mybatis-plus-boot-starter由2.3至3.5.3.2
解决：https://blog.csdn.net/qq_38254635/article/details/141159153
6、程序包com.baomidou.mybatisplus.generator不存在
原因：mybatis-plus-generator版本不兼容
解决：https://blog.csdn.net/qq_38254635/article/details/141166324
7、Invalid value type for attribute 'factoryBeanObjectType': java.lang.String
原因：mybatis-plus-generator版本不兼容
解决：https://blog.csdn.net/qq_38254635/article/details/141167883
8、Bean named 'redisTemplate' is expected to be of type 'org.springframework.data.redis.core.StringRedisTemplate' but was actually of type 'org.springframework.data.redis.core.RedisTemplate'
原因：bean未识别，注解需替换为 @Resource
解决：https://blog.csdn.net/qq_38254635/article/details/141725820
9、No data sources are configured to run this SQL and provide advanced code assistance. Disable this inspection via problem menu (Alt+Enter).
原因：需要配置Database
解决：https://blog.csdn.net/qq_38254635/article/details/141726108
10、org.apache.catalina.core.StandardService stopInternal
原因：由于Java EE已经变更为Jakarta EE，包名以javax开头的需要改为jakarta
解决：https://blog.csdn.net/qq_38254635/article/details/142137747
11、Initialization Sequence datacenterId:16 workerId:17
原因：启动类增加 @EnableAutoConfiguration
解决：https://blog.csdn.net/qq_38254635/article/details/143887970
12、 Bean named 'ddlApplicationRunner' is expected to be of type 'org.springframework.boot.Runner' but was actually of type 'org.springframework.beans.factory.support.NullBean'
原因：mybatis-plus-boot-starter版本与当前项目不兼容
解决：https://blog.csdn.net/qq_38254635/article/details/143888315
13、Access denied for user 'root'@'127.0.0.1' (using password: YES)
原因：Mysql的密码错了，修改一下密码即可。
解决：https://blog.csdn.net/qq_38254635/article/details/143888615
END
从目前的报错来看，直接从JAVA8往JAVA17/21去升级，一定是困难重重的，而且很多的组件都会出现不适配的情况。
所以，结合目前的情况，建议放弃直接改造。
而是使用JAVA17直接搭建一套空白脚手架，然后将业务代码分类填充，就会方便很多，而且会更快。
空白脚手架注意内容：拦截器，过滤器，事务控制，跨域，加解密，加签验签，权限，session控制，通用异常处理机制，数据库驱动，Mybatis组件，定时任务quartz，日志管理，redis组件，配置文件jasypt加密，RABC，工具类等等。
OK，就这些吧。
有什么不对的还望指正，书写不易，觉得有帮助就点个赞吧！☺☺☺