SpringBoot【问题 03】BindingException\MalformedInputException\Error querying database（sqlite数据库）

怼烎@ 2023-10-12 13:14 15阅读 0赞

## 1.类文件具有错误的版本 61.0, 应为 52.0 ##

# JDK8+SpringBoot3.1.0
    java.lang.UnsupportedClassVersionError: 
    ch/qos/logback/classic/spi/LogbackServiceProvider
     has been compiled by a more recent version of the Java Runtime (class file version 55.0), 
    this version of the Java Runtime only recognizes class file versions up to 52.0  
    
    # JDK8+[SpringBoot3.0.0-SpringBoot3.0.7]
    Error:(3, 47) java: 无法访问org.springframework.web.bind.annotation.RequestMapping
      错误的类文件: /E:/maven-file/org/springframework/spring-web/6.0.9/spring-web-6.0.9.jar!/org/springframework/web/bind/annotation/RequestMapping.class
        类文件具有错误的版本 61.0, 应为 52.0
        请删除该文件或确保该文件位于正确的类路径子目录中。
    
    # JDK8+SpringBoot3.0.7 
    此时能正常启动项目了【JDK8尚能饭否？】

## 2.BindingException ##

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception 
    [Request processing failed; 
    nested exception is org.apache.ibatis.binding.BindingException:
    Invalid bound statement (not found): 
    com.example.demo.web.mapper.CustomMapper.test] with root cause

这个异常需要两步才能解决：  
【Step.1】pom添加指定项目的资源文件的位置。

【Step.2】配置文件内指定 Mapper XML 文件的位置。

mybatis-plus:
      mapper-locations: classpath*:/com/example/demo/**/mapper/xml/*.xml

IDEA插件推荐【MyBatisX】

![在这里插入图片描述][0964df2a29844ce78a20cf05198db067.png_pic_center]  
Maper接口写好之后，可以使用插件生成对应的mapper.xml文件：

![在这里插入图片描述][de9903764fb44ba796ee07eef9bf1156.png_pic_center]  
在接口上右键调用：

![在这里插入图片描述][9147e00edd9e49eb9e4486cdb17d9037.png_pic_center]  
![在这里插入图片描述][84383c80a684414d8df35c5399d416e9.png_pic_center]  
选择生成路径：

![在这里插入图片描述][bb71bf5e2f0a4c6381646b190def6397.png_pic_center]  
生成结果：

![在这里插入图片描述][6c6abfcfa90d4ad1a8340eebdbc679b0.png_pic_center]

## 3.MalformedInputException ##

org.yaml.snakeyaml.error.YAMLException: java.nio.charset.MalformedInputException: Input length = 1

这个报错出现的原因是用`Spring Initializr`生成的配置文件使用的是当前电脑的编码方式`GBK`，执行时使用的是`UTF-8`导致的，删除全部中文也能解决问题。需要保留注释信息的话，需要将文件的编码格式调整为`UTF-8`。

![在这里插入图片描述][28628cebccd746cb989941782c1bc6bb.png_pic_center]

## 4.Error querying database ##

这里使用的是SQLite数据库，配置信息如下：

spring:
      datasource:
        dynamic:
          datasource:
            master:
              driver-class-name: org.sqlite.JDBC
              url: jdbc:sqlite:demo.sqlite3
              username:
              password:

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apache.ibatis.exceptions.PersistenceException: 
    ### Error querying database.  Cause: org.sqlite.SQLiteException: [SQLITE_ERROR] SQL error or missing database (no such table: student)
    ### The error may exist in file [E:\demo\target\classes\com\example\demo\web\mapper\xml\CustomMapper.xml]
    ### The error may involve com.example.demo.web.mapper.CustomMapper.test
    ### The error occurred while executing a query
    ### SQL: select id, name, age from student
    ### Cause: org.sqlite.SQLiteException: [SQLITE_ERROR] SQL error or missing database (no such table: student)] with root cause

![在这里插入图片描述][743f4b783d164622a2ea0a0c66e66371.png_pic_center]

[0964df2a29844ce78a20cf05198db067.png_pic_center]: https://img-blog.csdnimg.cn/0964df2a29844ce78a20cf05198db067.png#pic_center
[de9903764fb44ba796ee07eef9bf1156.png_pic_center]: https://img-blog.csdnimg.cn/de9903764fb44ba796ee07eef9bf1156.png#pic_center
[9147e00edd9e49eb9e4486cdb17d9037.png_pic_center]: https://img-blog.csdnimg.cn/9147e00edd9e49eb9e4486cdb17d9037.png#pic_center
[84383c80a684414d8df35c5399d416e9.png_pic_center]: https://img-blog.csdnimg.cn/84383c80a684414d8df35c5399d416e9.png#pic_center
[bb71bf5e2f0a4c6381646b190def6397.png_pic_center]: https://img-blog.csdnimg.cn/bb71bf5e2f0a4c6381646b190def6397.png#pic_center
[6c6abfcfa90d4ad1a8340eebdbc679b0.png_pic_center]: https://img-blog.csdnimg.cn/6c6abfcfa90d4ad1a8340eebdbc679b0.png#pic_center
[28628cebccd746cb989941782c1bc6bb.png_pic_center]: https://img-blog.csdnimg.cn/28628cebccd746cb989941782c1bc6bb.png#pic_center
[743f4b783d164622a2ea0a0c66e66371.png_pic_center]: https://img-blog.csdnimg.cn/743f4b783d164622a2ea0a0c66e66371.png#pic_center