Question

我正在尝试将Spring Data JDBC与MyBatis结合使用。我对使用CrudRepository提供的现成的CRUD方法以及编写在MyBatis XML文件中定义的其他自定义查询感兴趣。

通过阅读jdbc.mybatis中的说明，听起来我需要做的就是创建一个实现我想要的方法的Mapper（遵循规则“ 语句是通过将实体类型的完全限定名称与Mapper “连接在一起并向我的CrudRepository添加方法签名来构造的。我已经做到了，但是Spring Data似乎从未找到我的方法并给出了此错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fooApplication': Invocation of init method failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: No query specified on findByChangeOwnerId; nested exception is java.lang.IllegalStateException: No query specified on findByChangeOwnerId
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1778) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:849) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at com.xxx.fooApplication.main(fooApplication.java:42) [classes/:na]
Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: No query specified on findByChangeOwnerId; nested exception is java.lang.IllegalStateException: No query specified on findByChangeOwnerId

我也按照mybatis-spring-boot-sample中的示例进行操作，但是对于其中的内容我没有太多要继续。

问题是：

我可以将其他方法添加到将调用MyBatis的CrudRepository吗？如果可以的话，可以在下面解释我的缺失吗？
我假设对于任何其他方法，我都可以传递我想要的任何参数，而不必总是传递MyBatisContext？

我的Crud系统信息库

package com.xxx.repository.jdbc;

import com.xxx.model.Foo;
import org.springframework.data.repository.CrudRepository;
import org.springframework.data.repository.query.Param;

import java.util.List;

public interface FooBmtRepository extends CrudRepository<Foo, String> {  
  List<Foo> findByChangeOwnerId(@Param("id") String id);
}

src / main / resources / application.yml

mybatis:
  mapper-locations: classpath:/mapper/**/*.xml
  configuration:
    map-underscore-to-camel-case: true

地图XML

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.xxx.model.ItsmMapper">
    <!--<select id="findByChangeOwnerId" resultType="com.xxx.model.Itsm" parameterType="org.springframework.data.jdbc.mybatis.MyBatisContext">-->
    <!--where change_owner_id=#{changeOwnerId}-->
    <select id="findByChangeOwnerId" resultMap="itsmResultMap" parameterType="String">
        select *
        from [myschema].[tbl_itsms_bmt]
        where change_owner_id=#{id}
    </select>

    <resultMap id="itsmResultMap" type="com.xxx.model.Itsm">
        <result property="changeNumber" column="change_number"/>
        <result property="itsmUrl" column="itsm_url"/>
        <result property="changeTitle" column="change_title"/>
        <result property="category" column="category"/>
        <result property="status" column="status"/>
        <result property="createdDate" column="created_date"/>
    </resultMap>

</mapper>

依赖项（大多数依赖项是通过入门导入的，显示了所有拼写，因为我无法正确显示mvn dependency:tree）

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-jdbc</artifactId>
    <version>1.0.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-commons</artifactId>
    <version>2.1.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.1.6.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.1.6.RELEASE</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot</artifactId>
    <version>2.1.3.RELEASE</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.0.0</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.0</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>2.0.0</version>
</dependency>
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-autoconfigure</artifactId>
    <version>2.0.0</version>
</dependency>
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.0.0</version>
</dependency>

Answer 1

您链接到的部分的开头是：

对于CrudRepository 中的每个操作，Spring Data JDBC运行多个语句。如果应用程序上下文中有一个SqlSessionFactory，Spring Data将为每一步检查SessionFactory是否提供一条语句。如果找到一个，则使用该语句（包括其配置的到实体的映射）。

这仅适用于CrudRepository中的方法。其他方法不能像这样工作。

您可以实现一个完整的自定义方法实现，以调用MyBatis。

或者，您可以为MyBatis支持的命名查询创建问题，甚至可能创建PR。

带有MyBatis的Spring Data JDBC找不到自定义查询

1 个答案: