首页 文章

mybatis-spring-boot,org.apache.ibatis.binding.BindingException:无效的绑定语句

提问于
浏览
1

mybatis-spring-boot-sample

我通过@Autowired添加了一个服务来获取CityMapper,但它失败了 . 我改变了一些内容,如下所示:

@SpringBootApplication
public class SampleMybatisApplication implements CommandLineRunner {

    @Autowired
    private CityService cityService;

    public static void main(String[] args) {
        SpringApplication.run(SampleMybatisApplication.class, args);
    }

    @Override
    public void run(String... args) throws Exception {
        System.out.println(this.cityService.getCityById(1L));
    }

}

添加服务:

public interface CityService {
    City getCityById(Long id);
}

它的实施:

@Service
public class CityServiceImpl implements CityService {

    @Autowired
    private CityMapper cityMapper;

    @Override
    public City getCityById(Long id) {
        City city = null;
        try{
            city = cityMapper.selectCityById(id);
            // maybe, I want to do something else over here.
        }catch (Exception e) {
            e.printStackTrace();
        }
        return city;
    }

}

和CityMapper:

@Repository
public class CityMapper {

    @Autowired
    private SqlSessionTemplate sqlSessionTemplate;

    public City selectCityById(long id) {
        return this.sqlSessionTemplate.selectOne("selectCityById", id);
    }

}

并且错误显示:

2016-04-09 16:38:47.400 ERROR 2017 --- [           main] o.s.boot.SpringApplication               : Application startup failed

java.lang.IllegalStateException: Failed to execute CommandLineRunner
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:795) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:776) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:763) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:356) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1112) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1101) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
    at sample.mybatis.SampleMybatisApplication.main(SampleMybatisApplication.java:35) [classes/:na]
Caused by: org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): sample.mybatis.service.CityService.getCityById
    at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:196) ~[mybatis-3.3.0.jar:3.3.0]
    at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:44) ~[mybatis-3.3.0.jar:3.3.0]
    at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:59) ~[mybatis-3.3.0.jar:3.3.0]
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) ~[mybatis-3.3.0.jar:3.3.0]
    at com.sun.proxy.$Proxy35.getCityById(Unknown Source) ~[na:na]
    at sample.mybatis.SampleMybatisApplication.run(SampleMybatisApplication.java:40) [classes/:na]
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:792) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]

4 回答

  • 0

    您的实施有什么特别的原因吗?

    该错误表明您缺少通常以下列方式之一完成的映射器:

    public interface CityMapper {
        @Select("your sql statement")
        public City selectCityById(long id);
    }
    

    要么

    public interface CityMapper{
        public City selectCityById(long id);
    }
    

    CityMapper.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="CityMapper">
        <select id="findById" resultType="City"></select>
    </mapper>
    
  • 0

    这是mybatis-spring-boot-starter中的一个错误 . 您的界面CityMapper已自动注册为映射器,但不应该 . 1.1.0解决了这个问题 .

  • 0

    在我的例子中,我使用mybatis-generator生成一个mapper.xml,

    重点是,我将此文件移动到另一个包:com.xxx.cust.mapper到com.xxx.frame.mapper,所以 <mapper namespace="com.xxx.cust.mapper.XXXMapper"> 是错误的 .

  • 0

    在我的情况下,这完全不同我有2个JARS,并且错误地两个JARS在相同的命名空间中具有相同的XML文件

    这使得问题来来去去,因为错误取决于tomcat中jar的加载顺序

相关问题