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;

/**

*

* Mybatis SQL拦截器

*

*

* @author nicky

* @version 1.00.00

*

* 修改记录

* 修改后版本: 修改人： 修改日期: 修改内容:

*

*/

@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);

@Override

public Object intercept(Invocation invocation) throws Throwable {

// 拦截sql

Object[] 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();

}

@Override

public Object plugin(Object obj) {

return Plugin.wrap(obj, this);

}

@Override

public 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.*;

/**

*

* Mybatis配置类

*

*

* @author nicky

* @version 1.00.00

*

* 修改记录

* 修改后版本: 修改人： 修改日期: 修改内容:

*

*/

@MapperScan(

basePackages = MAPPER_PACKAGES,

annotationClass = MybatisRepository.class,

sqlSessionFactoryRef = SQL_SESSION_FACTORY

)

@ComponentScan

@EnableTransactionManagement

@Configuration

public class MybatisConfig {

@Autowired

MybatisSqlInterceptor mybatisSqlInterceptor;

TypeAliasesPackageScanner packageScanner = new TypeAliasesPackageScanner();

@Bean(name = DATA_SOURCE_NAME)

@ConfigurationProperties(prefix = DATA_SOURCE_PROPERTIES)

@Primary

public 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);

}

}