spring-boot - Spring Data JDBC 与 MyBatis 找不到自定义查询

标签 spring-boot mybatis spring-mybatis spring-data-jdbc

我正在尝试将 Spring Data JDBC 与 MyBatis 一起使用。我对使用 CrudRepository 提供的开箱即用的 CRUD 方法以及编写在 MyBatis XML 文件中定义的附加自定义查询感兴趣。

阅读 jdbc.mybatis 的说明听起来我需要做的就是创建一个 Mapper 来实现我想要的方法(遵守规则“语句的名称是通过连接以下的完全限定名称来构造的”使用 Mapper 的实体类型”)并向我的 CrudRepository 添加方法签名。我已经这样做了,但 Spring Data 似乎从未找到我的方法并给出此错误:

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

我也遵循 mybatis-spring-boot-sample 中的示例但对于我来说,没有太多内容可以继续其中的内容。

问题是:

  1. 我可以向 CrudRepository 添加调用 MyBatis 的附加方法吗?如果可以的话可以解释一下我下面缺少的内容吗?
  2. 我假设对于任何附加方法,我可以传递我想要的任何参数,而不是总是必须传递 MyBatisContext

我的 CrudRepository

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

映射器 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(大多数是使用启动器导入的,显示所有内容,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>

最佳答案

您链接到的部分的开头内容为:

For each operation in CrudRepository, Spring Data JDBC runs multiple statements. If there is a SqlSessionFactory in the application context, Spring Data checks, for each step, whether the SessionFactory offers a statement. If one is found, that statement (including its configured mapping to an entity) is used.

这仅适用于 CrudRepository 中的方法。 其他方法不会这样工作。

您可以实现调用 MyBatis 的完整自定义方法实现。

或者,您可以为 MyBatis 支持的命名查询创建一个问题,甚至可能是一个 PR。

关于spring-boot - Spring Data JDBC 与 MyBatis 找不到自定义查询,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55664654/

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