Parsed configuration file class path resource Configuration.xml

最新推荐文章于 2024-03-13 16:41:09 发布
最新推荐文章于 2024-03-13 16:41:09 发布
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分类专栏： Mybatis 文章标签： 控制台一直输出日志 mybatis卡死 mybatis解析卡死 resultMap使用
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本文链接：https://blog.youkuaiyun.com/wujian_csdn_csdn/article/details/106253884
本文通过解决一个实际项目中MyBatis配置错误导致的启动问题，深入探讨了resultMap与resultType的使用场景及区别。指出当返回对象需要二次封装时，必须使用resultMap，而非resultType。

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最近开发项目遇到一个小的问题，困扰了我好大一会时间，现象是项目启动的过程中控制台一直输出mybatis的配置文件，但是一直没有结束，不停的输出，导致项目无法正常启动成功！

[org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed configuration file: 'class path resource [mybatisConfiguration.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/AdmisEquelMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/EquBefChangeMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/EqumsIntFormDeMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/EqumsReFormMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetClassiFication/AssetClassMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetMaintenanceRepair/AssetMaintenanceRepairMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetsinventory/AsDetailedFormMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetsinventory/AssetsInventoryMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attach/AfBindTbMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attach/CommonBasePhotosMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attributeChanges/AssetAttributeChangeMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attributeChanges/AsTrafficVolumesMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/billMaterial/BillMaterialMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/change/ChangesMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/common/AsRelMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/common/CommonBaseNameMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/contractProject/ContractProjectMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/earlierstage/EarlierStageMapper.xml]'
  2020-05-21 11:01:23 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/edm2eam/InterfaceMdmBaseDataMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed configuration file: 'class path resource [mybatisConfiguration.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/AdmisEquelMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/EquBefChangeMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/EqumsIntFormDeMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/admis/EqumsReFormMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetClassiFication/AssetClassMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetMaintenanceRepair/AssetMaintenanceRepairMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetsinventory/AsDetailedFormMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/assetsinventory/AssetsInventoryMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attach/AfBindTbMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attach/CommonBasePhotosMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attributeChanges/AssetAttributeChangeMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/attributeChanges/AsTrafficVolumesMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/billMaterial/BillMaterialMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/change/ChangesMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/common/AsRelMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/common/CommonBaseNameMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/contractProject/ContractProjectMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/earlierstage/EarlierStageMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed mapper file: 'URL [jar:file:/F:/apache-tomcat-8.0.33/webapps/eam%23api/WEB-INF/lib/eam-query-1.0-SNAPSHOT.jar!/com/ncic/eam/query/mapper/edm2eam/InterfaceMdmBaseDataMapper.xml]'
  2020-05-21 11:01:24 [org.mybatis.spring.SqlSessionFactoryBean]-[DEBUG] Parsed configuration file: 'class path resource [mybatisConfiguration.xml]'
................................
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搞的我头大，问题在自己刚增加的代码有关系，因为昨天还正常启动，今天改了点东西就这样了，经过仔细检查发现问题。

<resultMap id="queryEquBaseInfoResultMap" type="map">
        <id property="id" column="ID"/>
        <result property="assetNumber" column="ASSET_NUMBER"/>
        <result property="depreciationPeriod" column="DEPRECIATION_PERIOD"/>
        <result property="methodDepreciationId" column="METHOD_DEPRECIATION_ID"/>
        <association property="methodDepreciationName" javaType="map">
        <result property="text" column="METHOD_DEPRECIATION_ID"/>
        <result property="value" column="METHOD_DEPRECIATION_NAME"/>
        </association>
</resultMap>
<select id="queryEquBaseInfoById" parameterType="java.lang.String" resultType="queryEquBaseInfoResultMap">
..........
........
</select>

大家仔细看我上面的mybatis配置有什么问题？对了，问题就出现在resultType，因为queryEquBaseInfoResultMap是我自定义的一个集合对象，必须要使用resultMap才可以！
下面的才是正确的代码：

<select id="queryEquBaseInfoById" parameterType="java.lang.String" resultMap="queryEquBaseInfoResultMap">

总结：resultType 和 parameterType都可以直接定义成map，表示输出和输入的对象全部集合对象，这个没有问题，但一旦我们对返回的集合对象进行二次封装的时候，就必须改成resultMap，可能是因为mybatis在解析的时候，发现如果是resultType的话，自然认为是一种常见的类型或者是自己定义的java实体，不会去找配置文件里的对象吧！
以前面试的时候也有面试官问过这类问题，resultType和resultMap有什么区别，以前用mybatis也没在意这种情况，这种写法也不多见，记录下来这样的小问题，下次遇到面试的话，直接可以甩给面试官！

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第一步：在mybatis-config.xml中配置延迟加载。 &lt;?xml version="1.0" encoding="UTF-8" ?&gt; &lt;!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3...
【springboot】class path resource [mybatis/mybatis-config.xml] cannot be opened because it does not ex
Mrerlou的博客
10-12 1万+
问题描述 使用springboot 加载mybatis 配置文件，报错找不到该配置文件。 报错内容： Caused by: java.io.FileNotFoundException: class path resource [mybatis/mybatis-config.xml] cannot be opened because it does not ex at org.springframework.core.io.ClassPathResource.getInputStream(ClassPa
[DEBUG]-[org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:...
maxchenBug的博客
04-01 2144
[DEBUG]-[org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:431)] 一直在创建sqlsession工厂原因 今天在做开发项目的时候出现一直在控台输出创建sqlsessionfactory'这个代码, ...
logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter. Parsed mapper file: 'file
04-27
### MyBatis 日志初始化过程及 StdOutImpl 适配器解析 MyBatis 的日志功能通过 `org.apache.ibatis.logging` 包中的实现完成，其中 `StdOutImpl` 是一种简单的标准输出日志适配器。当配置文件中指定 `log-impl: org.apache.ibatis.logging.stdout.StdOutImpl`[^1] 后，MyBatis 将使用该适配器打印 SQL 执行的日志信息。 #### 日志初始化流程 在 MyBatis 初始化过程中，会加载全局配置并设置日志工厂 (`LogFactory`)。以下是具体步骤： 1. **读取配置** 当 MyBatis 解析 XML 配置文件时，如果发现 `<settings>` 中存在 `logImpl` 属性，则将其映射为对应的日志实现类[^3]。例如，在 YAML 文件中： ```yaml mybatis: configuration: log-impl: org.apache.ibatis.logging.stdout.StdOutImpl ``` 2. **创建 Log 实例** 在 MyBatis 内部，`BaseExecutor` 和其他组件会调用 `LogFactory.getLog(Class<?> clazz)` 创建具体的日志实例。对于 `StdOutImpl`，它会在控制台直接输出调试信息。 3. **执行 SQL 并记录日志** 每次执行查询或更新操作时，MyBatis 使用当前绑定的 `Log` 对象记录 SQL 文本及其参数值。这使得开发者可以轻松跟踪数据库交互细节。 #### Parsed Mapper File (Mapper 文件解析) MyBatis 在启动阶段会对所有的 Mapper 映射文件进行扫描和注册。这一过程涉及以下几个核心环节： 1. **定位 Mapper 资源路径** - 如果在 Spring Boot 应用程序中启用了 MyBatis 支持，则可以通过如下方式指明 Mapper 文件的位置： ```yaml mybatis: mapper-locations: classpath:mapper/*.xml ``` - 若未提供此属性，可能会触发警告消息 `"Property 'mapperLocations' was not specified"`[^4]。 2. **构建 SqlSessionFactory** - FactoryBean 类型的对象（如 `MapperFactoryBean`）负责动态代理目标 Mapper 接口，并关联底层 Session 工作流[^2]。 - 关键方法 `getObject()` 返回由 MyBatis 提供的实际 Mapper 实现对象。 3. **验证 Mapper 定义的有效性** - MyBatis 自动校验每个 XML 文件内的语句节点 (<select>, <insert> 等)，并与 Java Interface 方法签名匹配。 - 错误通常源于命名冲突、SQL 片段缺失或其他语法违规情况。 --- ### 示例代码片段展示如何启用日志与解析 Mapper 文件 以下是一个完整的 Spring Boot + MyBatis 集成案例，演示了如何正确配置日志以及处理 Mapper 文件位置。 ```java // Application Configuration @Configuration @MapperScan(basePackages = "com.example.mapper", sqlSessionFactoryRef = "sqlSessionFactory") public class MyBatisConfig { @Bean public DataSource dataSource() { DriverManagerDataSource dataSource = new DriverManagerDataSource(); dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver"); dataSource.setUrl("jdbc:mysql://localhost:3306/testdb"); dataSource.setUsername("root"); dataSource.setPassword("password"); return dataSource; } @Bean public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception { SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean(); factoryBean.setDataSource(dataSource); factoryBean.setTypeAliasesPackage("com.example.model"); // 设置实体别名包 factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver() .getResources("classpath*:mapper/**/*.xml")); // 加载 Mapper 文件 return factoryBean.getObject(); } } ``` YAML 配置部分可补充如下内容以便增强可观测性： ```yaml logging: level: com.example.mapper: DEBUG # 开启特定 Mapper 的 Debug 输出 mybatis: configuration: log-impl: org.apache.ibatis.logging.stdout.StdOutImpl ``` --- ###
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