1. 拦截器
java
package com.xxx.platform.common.interceptor;
import com.baomidou.dynamic.datasource.toolkit.DynamicDataSourceContextHolder;
import com.xxx.platform.common.aop.OLAPQuery;
import com.xxx.platform.constant.CommonConstant;
import com.xxx.platform.util.SQLFormatHelper;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.cache.CacheKey;
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.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;
import java.util.Objects;
import java.util.Properties;
/**
* SQL查询统计拦截器。</p>
*
* @author xxx
* @version 1.0
* @date 2022/10/27 18:21
*/
@Component
@Intercepts(
{
@Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}),
@Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class, CacheKey.class, BoundSql.class}),
}
)
@Slf4j
public class SQLTimerInterceptor implements Interceptor {
@Value("${spring.profiles.active}")
private String profile;
@Override
public Object intercept(Invocation invocation) throws Throwable {
long startTime = System.currentTimeMillis();
OLAPQuery olap = null;
try {
Method method = invocation.getMethod();
olap = method.getAnnotation(OLAPQuery.class);
if (!Objects.isNull(olap)) {
DynamicDataSourceContextHolder.push(CommonConstant.PSS);
}
return invocation.proceed();
} finally {
if (!Objects.isNull(olap)) {
DynamicDataSourceContextHolder.clear();
}
long duration = System.currentTimeMillis() - startTime;
SQLFormatHelper.PrintSQL printSQL = SQLFormatHelper.getFormatSQL(invocation);
String sqlId = printSQL.sqlId;
String sql = printSQL.formatSQL;
int ts = "lmp-sy-dev".equals(profile)?1000:3000;
if (duration >= ts) {
log.warn("{} execute SQL>=5s: {} ms, \nSQL: {}", sqlId, duration, sql);
}
}
}
@Override
public Object plugin(Object target) {
return Plugin.wrap(target, this);
}
@Override
public void setProperties(Properties properties) {
}
}2. 其他工具类
java
package com.xxx.platform.util;
import org.apache.commons.collections.CollectionUtils;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.type.TypeHandlerRegistry;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.regex.Matcher;
/**
* SQL格式化工具类。</p>
* 将mybatis预编译SQL转换为带参数SQL。
*
* @author xxx
* @date 2023/02/01 15:54
*/
public final class SQLFormatHelper {
public static PrintSQL getFormatSQL(Invocation invocation) {
PrintSQL sql = new PrintSQL();
MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
String sqlId = mappedStatement.getId();
sql.sqlId = sqlId;
try {
Object parameter = null;
if (invocation.getArgs().length > 1) {
parameter = invocation.getArgs()[1];
}
BoundSql boundSql = mappedStatement.getBoundSql(parameter);
Configuration configuration = mappedStatement.getConfiguration();
String formatSQL = showSql(configuration, boundSql);
sql.formatSQL = formatSQL;
} catch (Exception e) {
e.printStackTrace();
BoundSql bs = (BoundSql)invocation.getArgs()[5];
sql.formatSQL = bs.getSql();
}
return sql;
}
/**
* 如果参数是String，则添加单引号， 如果是日期，则转换为时间格式器并加单引号；
* 对参数是null和不是null的情况作了处理
*
* @param obj obj
* @return java.lang.String
*/
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);
value = "'" + formatter.format(new Date()) + "'";
} else {
if (obj != null) {
value = obj.toString();
} else {
value = "";
}
}
return value;
}
/**
* 进行？的替换
*
* @param configuration
* @param boundSql
* @return
*/
private static String showSql(Configuration configuration, BoundSql boundSql) {
Object parameterObject = boundSql.getParameterObject();
List<ParameterMapping> parameterMappings = boundSql
.getParameterMappings();
String sql = boundSql.getSql().replaceAll("[\\s]+", " "); // sql语句中多个空格都用一个空格代替
if (!CollectionUtils.isEmpty(parameterMappings) && parameterObject != null) {
// 获取类型处理器注册器，类型处理器的功能是进行java类型和数据库类型的转换<br>// 如果根据parameterObject.getClass(）可以找到对应的类型，则替换
TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(parameterObject)));
} else {
// MetaObject主要是封装了originalObject对象，提供了get和set的方法用于获取和设置originalObject的属性值,主要支持对JavaBean、Collection、Map三种类型对象的操作
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("\\?", Matcher.quoteReplacement(getParameterValue(obj)));
} else if (boundSql.hasAdditionalParameter(propertyName)) {
Object obj = boundSql.getAdditionalParameter(propertyName); // 该分支是动态sql
sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(obj)));
} else {
sql = sql.replaceFirst("\\?", "缺失");
}
}
}
}
return sql;
}
public static class PrintSQL {
public String sqlId;
public String formatSQL;
}
}