com.cpp.core.filter;
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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.cpp.core测试数据mon.utils.SQLFormatter;
@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 MybatisInterceptor implements Interceptor {
private static Logger logger = LoggerFactory.getLogger(MybatisInterceptor.class);
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 ;
long start = System.currentTimeMillis();
returnValue = invocation.proceed();
long end = System.currentTimeMillis();
long time = (end - start);
if (time > 1 ) {
String sql = getSql(configuration, boundSql, sqlId, time);
logger.info( "调用的java方法为：\n " +sql.split( ":" )[ 0 ]);
logger.info( "查询sql语句为：\n" +SQLFormatter.format(sql.split( ":" )[ 1 ]) + "\n" + "sql语句执行的时间：" +time+ "\n\n" );
}
return returnValue;
}
public static String getSql (Configuration configuration, BoundSql boundSql, String sqlId, long time) {
String sql = showSql(configuration, boundSql);
StringBuilder str = new StringBuilder( 100 );
str.append(sqlId);
str.append( ":" );
str.append(sql);
str.append( ":" );
str.append(time);
str.append( "ms" );
return str.toString();
}
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;
}
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;
}
}
2、在新建sql格式化工具，格式化sql语句
package com.cpp.core.filter;
import java.util.Properties;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
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.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
@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 SqlStatementInterceptor implements Interceptor {
private Properties properties;
@Override
public Object intercept (Invocation invocation) throws Throwable {
System.out.println( "test" );
return invocation.proceed();
}
@Override
public Object plugin (Object target) {
return Plugin.wrap(target, this );
}
@Override
public void setProperties (Properties properties0) {
this .properties = properties0;
}
}
3、在spring的配置文件中添加
< bean id = "sqlSessionFactory" class = "org.mybatis.spring.SqlSessionFactoryBean" >
< property name = "dataSource" ref = "dataSource" />
<!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
< property name = "typeAliasesPackage" value = "com.cpp.core" />
<!-- 显式指定Mapper文件位置 -->
< property name = "mapperLocations" value = "classpath:/mybatis/*/*Mapper.xml" />
< property name = "plugins" >
< array >
< ref bean = "paginationInterceptor" />
< ref bean = "sqlStatementInterceptor" />
</ array >
</ property >
< property name = "configurationProperties" >
< props >
< prop key = "dialect" > mysql </ prop >
</ props >
</ property >
</ bean >
配置插件
< ref bean = "sqlStatementInterceptor" />
配置注入的内容
< bean id = "sqlStatementInterceptor" class = "com.cpp.core.filter.MybatisInterceptor" > </ bean >
2、如果使用的是Druid来连接的数据库
在web.xml文件中添加下面的信息
< servlet >
< servlet-name > DruidStatView </ servlet-name >
< servlet-class > com.alibaba.druid.support.http.StatViewServlet </ servlet-class >
</ servlet >
< servlet-mapping >
< servlet-name > DruidStatView </ servlet-name >
< url-pattern > /druid/* </ url-pattern >
</ servlet-mapping >
可以通过web的访问的形式进行访问页面：输入：
http://dev.eop.zhc360测试数据:8080/cpp-middleman-api/druid/sql.html
就可以查看到输出的sql语句了
mybatis使用拦截器显示sql,使用druid配置连接信息
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