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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});

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@Configurationpublic 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);    }}

项目执行之后，在控制台就可以看到打印的sql，sql执行被拦截下来

2018-12-17 10:43:10.728  INFO 4428 --- [nio-8081-exec-1] c.m.t.c.c.d.c.MybatisSqlInterceptor      : 获取到的SQL：{} SELECT     id,        category_name as categoryName,        sjid,        last_modify_time as lastModifyTime,        create_time as createTime        FROM item_category t

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