本博客介绍的是继承Mybatis提供的Interface接口，自定义拦截器，然后将项目中的sql拦截一下，打印到控制台。
先自定义一个拦截器
package com.muses.taoshop.common.core.database.config;import org.apache.commons.lang3.StringUtils;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;import java.util.Properties;/*** <pre>* Mybatis SQL拦截器* </pre>** @author nicky* @version 1.00.00* <pre>* 修改记录* 修改后版本: 修改人： 修改日期: 修改内容:* </pre>*/
@Component
@Intercepts(@Signature(type = Executor.class, method = "query",args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}))
public class MybatisSqlInterceptor implements Interceptor {Logger LOGGER = LoggerFactory.getLogger(MybatisSqlInterceptor.class);@Overridepublic Object intercept(Invocation invocation) throws Throwable {// 拦截sqlObject[] args = invocation.getArgs();MappedStatement statement = (MappedStatement) args[0];Object parameterObject = args[1];BoundSql boundSql = statement.getBoundSql(parameterObject);String sql = boundSql.getSql();LOGGER.info("获取到的SQL：{}"+sql);if (StringUtils.isBlank(sql)) {return invocation.proceed();}// 返回return invocation.proceed();}@Overridepublic Object plugin(Object obj) {return Plugin.wrap(obj, this);}@Overridepublic void setProperties(Properties arg0) {}}然后在SqlSessionFactoryBean进行配置，主要代码factoryBean.setPlugins(new Interceptor[]{mybatisSqlInterceptor});
下面是我的Mybatis配置类，是基于SpringBoot做的，仅供参考
package com.muses.taoshop.common.core.database.config;import com.muses.taoshop.common.core.database.annotation.MybatisRepository;
import com.muses.taoshop.common.core.database.annotation.TypeAliasesPackageScanner;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.boot.autoconfigure.SpringBootVFS;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.*;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.sql.DataSource;import static com.muses.taoshop.common.core.database.config.BaseConfig.*;/*** <pre>* Mybatis配置类* </pre>** @author nicky* @version 1.00.00* <pre>* 修改记录* 修改后版本: 修改人： 修改日期: 修改内容:* </pre>*/
@MapperScan(basePackages = MAPPER_PACKAGES,annotationClass = MybatisRepository.class,sqlSessionFactoryRef = SQL_SESSION_FACTORY
)
@ComponentScan
@EnableTransactionManagement
@Configuration
public class MybatisConfig {@AutowiredMybatisSqlInterceptor mybatisSqlInterceptor;TypeAliasesPackageScanner packageScanner = new TypeAliasesPackageScanner();@Bean(name = DATA_SOURCE_NAME)@ConfigurationProperties(prefix = DATA_SOURCE_PROPERTIES)@Primarypublic DataSource dataSource(){return DataSourceBuilder.create().build();}@Primary@Bean(name = SQL_SESSION_FACTORY)public SqlSessionFactory sqlSessionFactory(@Qualifier(DATA_SOURCE_NAME)DataSource dataSource)throws Exception{//SpringBoot默认使用DefaultVFS进行扫描，但是没有扫描到jar里的实体类VFS.addImplClass(SpringBootVFS.class);SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();factoryBean.setPlugins(new Interceptor[]{mybatisSqlInterceptor});factoryBean.setDataSource(dataSource);//factoryBean.setConfigLocation(new ClassPathResource("mybatis-config.xml"));ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();try{factoryBean.setMapperLocations(resolver.getResources("classpath*:/mybatis/*Mapper.xml"));String typeAliasesPackage = packageScanner.getTypeAliasesPackages();factoryBean.setTypeAliasesPackage(typeAliasesPackage);SqlSessionFactory sqlSessionFactory = factoryBean.getObject();return sqlSessionFactory;}catch (Exception e){e.printStackTrace();throw new RuntimeException();}}@Bean(name = MYBATIS_TRANSACTION_MANAGER)public DataSourceTransactionManager transactionManager(@Qualifier(DATA_SOURCE_NAME)DataSource dataSource) {return new DataSourceTransactionManager(dataSource);}}
