mybatis 控制台打印sql
开发时调试使用
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <property name="dataSource"> <ref bean="dataSource" /> </property> <!-- 自动到mappers包下面去搜索mybatis的映射文件 --> <property name="mapperLocations" value="classpath:com/a/*/**/mapping/*.xml" /> <property name="typeAliasesPackage" value="com.a" /> </bean>
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <plugins> <plugin interceptor="com.a.ab.mybatis.interceptor.SqlInterceptor"> </plugin> </plugins> </configuration>
package com.cares.asis.mybatis.interceptor; import java.text.DateFormat; import java.util.Date; import java.util.List; import java.util.Locale; import java.util.Properties; import org.apache.ibatis.executor.Executor; import org.apache.ibatis.mapping.BoundSql; import org.apache.ibatis.mapping.MappedStatement; import org.apache.ibatis.mapping.ParameterMapping; import org.apache.ibatis.plugin.Interceptor; import org.apache.ibatis.plugin.Intercepts; import org.apache.ibatis.plugin.Invocation; import org.apache.ibatis.plugin.Plugin; import org.apache.ibatis.plugin.Signature; import org.apache.ibatis.reflection.MetaObject; import org.apache.ibatis.session.Configuration; import org.apache.ibatis.session.ResultHandler; import org.apache.ibatis.session.RowBounds; import org.apache.ibatis.type.TypeHandlerRegistry; /** * mybatis打印sql 用于在后台打印执行的sql,在applicationContext.xml中的<bean * id="sqlSessionFactory" 标签中添加:<property name="configLocation" * value="classpath:mybatis-config.xml" /> 即可打印sql语句 此方法仅用于开发调试,配置之后请勿提交 */ @Intercepts( { @Signature(type = Executor.class, method = "update", args = { MappedStatement.class, Object.class }), @Signature(type = Executor.class, method = "query", args = { MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class }) }) public class SqlInterceptor implements Interceptor { private Properties properties; public Object intercept(Invocation invocation) throws Throwable { MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0]; Object parameter = null; if (invocation.getArgs().length > 1) { parameter = invocation.getArgs()[1]; } String sqlId = mappedStatement.getId(); BoundSql boundSql = mappedStatement.getBoundSql(parameter); Configuration configuration = mappedStatement.getConfiguration(); Object returnValue = null; returnValue = invocation.proceed(); String sql = getSql(configuration, boundSql, sqlId); System.err.println("ASIS_Print:" + sql); return returnValue; } /** * sql执行的具体位置与sql的拼接 * */ public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId) { String sql = showSql(configuration, boundSql); StringBuilder str = new StringBuilder(600); str.append(sqlId); str.append(":"); str.append(sql); return str.toString(); } /** * 拼接sql中的所有参数 * */ private static String getParameterValue(Object obj) { String value = null; if (obj instanceof String) { value = "'" + obj.toString() + "'"; } else if (obj instanceof Date) { DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.CHINA); value = "'" + formatter.format(new Date()) + "'"; } else { if (obj != null) { value = obj.toString(); } else { value = ""; } } return value; } /** * 解析sql * */ public static String showSql(Configuration configuration, BoundSql boundSql) { Object parameterObject = boundSql.getParameterObject(); List<ParameterMapping> parameterMappings = boundSql.getParameterMappings(); String sql = boundSql.getSql().replaceAll("[\\s]+", " "); if (parameterMappings.size() > 0 && parameterObject != null) { TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry(); if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) { sql = sql.replaceFirst("\\?", getParameterValue(parameterObject)); } else { MetaObject metaObject = configuration.newMetaObject(parameterObject); for (ParameterMapping parameterMapping : parameterMappings) { String propertyName = parameterMapping.getProperty(); if (metaObject.hasGetter(propertyName)) { Object obj = metaObject.getValue(propertyName); sql = sql.replaceFirst("\\?", getParameterValue(obj)); } else if (boundSql.hasAdditionalParameter(propertyName)) { Object obj = boundSql.getAdditionalParameter(propertyName); sql = sql.replaceFirst("\\?", getParameterValue(obj)); } } } } return sql; } public Object plugin(Object target) { return Plugin.wrap(target, this); } public void setProperties(Properties properties0) { this.properties = properties0; } }