解决mybatis-plus通用mapper调用报错:Invalid bound statement

目录

• mybatis-plus通用mapper调用报错
• 解决方法

mybatis-plus通用mapper调用报错

使用springboot整合mybatis-plus后，调用自定义的方法正常，调用BaseMapper中自带的方法报错如下：

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): cn.rkang.enterprise.mapper.EmployeeInfoMapper.selectOne
    at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:227) ~[mybatis-3.4.6.jar:3.4.6]
    at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:49) ~[mybatis-3.4.6.jar:3.4.6]
    at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65) ~[mybatis-3.4.6.jar:3.4.6]
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) ~[mybatis-3.4.6.jar:3.4.6]
    at com.sun.proxy.$Proxy70.selectOne(Unknown Source) ~[na:na]
    at com.baomidou.mybatisplus.extension.service.impl.ServiceImpl.getOne(ServiceImpl.java:259) ~[mybatis-plus-extension-3.1.1.jar:3.1.1]
    at com.baomidou.mybatisplus.extension.service.IService.getOne(IService.java:192) ~[mybatis-plus-extension-3.1.1.jar:3.1.1]
    at com.baomidou.mybatisplus.extension.service.IService
FastClassBySpringCGLIB
FastClassBySpringCGLIB
f8525d18.invoke(<generated>) ~[mybatis-plus-extension-3.1.1.jar:3.1.1]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684) ~[spring-aop-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at cn.rkang.enterprise.local.service.EmployeeInfoService
EnhancerBySpringCGLIB
EnhancerBySpringCGLIB
7e12f21b.getOne(<generated>) ~[classes/:na]

跟进源码发现是methodProxy.invoke(target, argsToUse)报错

if (chain.isEmpty() && Modifier.isPublic(method.getModifiers())) {
    Object[] argsToUse = AopProxyUtils.adaptArgumentsIfNecessary(method, args);
    retVal = methodProxy.invoke(target, argsToUse);
} else {
    retVal = (new CglibAopProxy.CglibMethodInvocation(proxy, target, method, args, targetClass, chain, methodProxy)).proceed();
}

在invoke方法组装sqlmand的时候，MappedStatement没有组装成功，始终是null

public SqlCommand(Configuration configuration, Class<?> mapperInterface, Method method) {
    String methodName = method.getName();
    Class<?> declaringClass = method.getDeclaringClass();
    MappedStatement ms = this.resolveMappedStatement(mapperInterface, methodName, declaringClass, configuration);
    if (ms == null) {
        if (method.getAnnotation(Flush.class) == null) {
            throw new BindingException("Invalid bound statement (not found): " + mapperInterface.getName() + "." + methodName);
        }

        this.name = null;
        this.type = SqlCommandType.FLUSH;
    } else {
        this.name = ms.getId();
        this.type = ms.getSqlCommandType();
        if (this.type == SqlCommandType.UNKNOWN) {
            throw new BindingException("Unknown execution method for: " + this.name);
        }
    }
}

解决方法

将mybatis的sqlSessionFactory替换成mybatis-plusd的MybatisSqlSessionFactoryBean，添加配置类MybatisPlusConfig

package cn.rkang.enterprise.common.config;
import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.core.MybatisXMLLanguageDriver;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.mapping.DatabaseIdProvider;
import org.apache.ibatis.plugin.Interceptor;
import org.mybatis.spring.boot.autoconfigure.MybatisProperties;
import org.mybatis.spring.boot.autoconfigure.SpringBootVFS;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.ResourceLoader;
import org.springframework.util.StringUtils;
import javax.sql.DataSource;

@Configuration
public class MybatisPlusConfig {

    @Autowired
    private DataSource dataSource;

    @Autowired
    private MybatisProperties properties;

    @Autowired
    private ResourceLoader resourceLoader = new DefaultResourceLoader();

    @Autowired(required = false)
    private Interceptor[] interceptors;

    @Autowired(required = false)
    private DatabaseIdProvider databaseIdProvider;

    /**
     *   mybatis-plus分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor page = new PaginationInterceptor();
        page.setDialectType("mysql");
        return page;
    }
    /**
     * 这里全部使用mybatis-autoconfigure 已经自动加载的资源。不手动指定
     * 配置文件和mybatis-boot的配置文件同步
     * @return
     */
    @Bean
    public MybatisSqlSessionFactoryBean mybatisSqlSessionFactoryBean() {
        MybatisSqlSessionFactoryBean mybatisPlus = new MybatisSqlSessionFactoryBean();
        mybatisPlus.setDataSource(dataSource);
        mybatisPlus.setVfs(SpringBootVFS.class);
        if (StringUtils.hasText(this.properties.getConfigLocation())) {
            mybatisPlus.setConfigLocation(this.resourceLoader.getResource(this.properties.getConfigLocation()));
        }
        if (!ObjectUtils.isEmpty(this.interceptors)) {
            mybatisPlus.setPlugins(this.interceptors);
        }
        MybatisConfiguration mc = new MybatisConfiguration();
        mc.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
        //数据库字段设计为驼峰命名，默认开启的驼峰转下划线会报错字段找不到
        mc.setMapUnderscoreToCamelCase(false);
        mybatisPlus.setConfiguration(mc);
        if (this.databaseIdProvider != null) {
            mybatisPlus.setDatabaseIdProvider(this.databaseIdProvider);
        }
        if (StringUtils.hasLength(this.properties.getTypeAliasesPackage())) {
            mybatisPlus.setTypeAliasesPackage(this.properties.getTypeAliasesPackage());
        }
        if (StringUtils.hasLength(this.properties.getTypeHandlersPackage())) {
            mybatisPlus.setTypeHandlersPackage(this.properties.getTypeHandlersPackage());
        }
        if (!ObjectUtils.isEmpty(this.properties.resolveMapperLocations())) {
            mybatisPlus.setMapperLocations(this.properties.resolveMapperLocations());
        }
        return mybatisPlus;
    }
}

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