Mybatis-plus general mapper call error: Invalid bound statement

After using springboot to integrate mybatis-plus, calling the custom method is normal, and calling the built-in method in BaseMapper reports an error as follows:

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$$FastClassBySpringCGLIB$$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$$EnhancerBySpringCGLIB$$7e12f21b.getOne(<generated>) ~[classes/:na]

Follow up the source code and found that methodProxy.invoke(target, argsToUse) reported an error,

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();
}

When assembling sqlmand in the invoke method, the MappedStatement is not assembled successfully and is always 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);
        }
    }
}
Solution: Replace the sqlSessionFactory of mybatis with MybatisSqlSessionFactoryBean of mybatis-plusd, and add the configuration class 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 paging plugin
     */
    @Bean
    public PaginationInterceptor paginationInterceptor () {
        PaginationInterceptor page PaginationInterceptor = new ();
        page.setDialectType("mysql");
        return page;
    }
    /**
     * All resources that have been automatically loaded by mybatis-autoconfigure are used here. Do not specify manually
     * The configuration file is synchronized with the configuration file of mybatis-boot
     * @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);
        //The database field is designed to name the camel case, the default open camel case to underline will report an error that the field cannot be found
        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;
    }

}
problem solved

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Origin blog.csdn.net/noob9527/article/details/90229837