【工具】 MyBatis Plus的SQL攔截器自動翻譯替換"?"符號為真實數值

使用MyBatis的配置如下所示：

mybatis-plus:configuration:log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

調用接口，sql日志打印如下：

參數和sql語句不在同一行顯示，需要自己代入思考，不夠直觀。

實現"?"的自動翻譯，步驟如下：

1)編寫sql語句攔截器：

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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Properties;@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, CacheKey.class, BoundSql.class})})
public class SqlStatementInterceptor implements Interceptor {public static final Logger log = LoggerFactory.getLogger("sys-sql");@Overridepublic Object intercept(Invocation invocation) throws Throwable {long startTime = System.currentTimeMillis();try {return invocation.proceed();} finally {long timeConsuming = System.currentTimeMillis() - startTime;log.info("執行SQL:{}ms", timeConsuming);if (timeConsuming > 999 && timeConsuming < 5000) {log.info("執行SQL大于1s:{}ms", timeConsuming);} else if (timeConsuming >= 5000 && timeConsuming < 10000) {log.info("執行SQL大于5s:{}ms", timeConsuming);} else if (timeConsuming >= 10000) {log.info("執行SQL大于10s:{}ms", timeConsuming);}}}@Overridepublic Object plugin(Object target) {return Plugin.wrap(target, this);}@Overridepublic void setProperties(Properties properties) {}
}

2）編寫MyBatisPlus日志攔截器：

import com.baomidou.mybatisplus.extension.plugins.inner.InnerInterceptor;
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.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 org.springframework.util.CollectionUtils;import java.sql.SQLException;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.regex.Matcher;public class MybatisPlusAllSqlLog implements InnerInterceptor {public static final Logger log = LoggerFactory.getLogger("sys-sql");@Overridepublic void beforeQuery(Executor executor, MappedStatement ms, Object parameter, RowBounds rowBounds, ResultHandler resultHandler, BoundSql boundSql) throws SQLException {logInfo(boundSql, ms, parameter);}@Overridepublic void beforeUpdate(Executor executor, MappedStatement ms, Object parameter) throws SQLException {BoundSql boundSql = ms.getBoundSql(parameter);logInfo(boundSql, ms, parameter);}private static void logInfo(BoundSql boundSql, MappedStatement ms, Object parameter) {try {log.info("parameter = " + parameter);// 獲取到節點的id,即sql語句的idString sqlId = ms.getId();log.info("sqlId = " + sqlId);// 獲取節點的配置Configuration configuration = ms.getConfiguration();// 獲取到最終的sql語句String sql = getSql(configuration, boundSql, sqlId);log.info("完整的sql:{}", sql);} catch (Exception e) {log.error("異常:{}", e.getLocalizedMessage(), e);}}// 封裝了一下sql語句，使得結果返回完整xml路徑下的sql語句節點id + sql語句public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId) {return sqlId + ":" + showSql(configuration, boundSql);}// 進行？的替換public static String showSql(Configuration configuration, BoundSql boundSql) {// 獲取參數Object parameterObject = boundSql.getParameterObject();List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();// sql語句中多個空格都用一個空格代替String sql = boundSql.getSql().replaceAll("[\\s]+", " ");if (!CollectionUtils.isEmpty(parameterMappings) && parameterObject != null) {// 獲取類型處理器注冊器，類型處理器的功能是進行java類型和數據庫類型的轉換TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();// 如果根據parameterObject.getClass(）可以找到對應的類型，則替換if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {sql = sql.replaceFirst("\\?",Matcher.quoteReplacement(getParameterValue(parameterObject)));} else {// MetaObject主要是封裝了originalObject對象，提供了get和set的方法用于獲取和設置originalObject的屬性值,主要支持對JavaBean、Collection、Map三種類型對象的操作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)) {// 該分支是動態sqlObject obj = boundSql.getAdditionalParameter(propertyName);sql = sql.replaceFirst("\\?",Matcher.quoteReplacement(getParameterValue(obj)));} else {// 打印出缺失，提醒該參數缺失并防止錯位sql = sql.replaceFirst("\\?", "缺失");}}}}return sql;}// 如果參數是String，則添加單引號， 如果是日期，則轉換為時間格式器并加單引號； 對參數是null和不是null的情況作了處理private static String getParameterValue(Object obj) {String value;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;}}

3）編寫MyBatisPlus配置：

@Configuration
public class MybatisConfiguration {@Beanpublic MybatisPlusInterceptor mybatisPlusInterceptor() {MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();mybatisPlusInterceptor.addInnerInterceptor(new MybatisPlusAllSqlLog());return mybatisPlusInterceptor;}}

測試：

調用接口，sql日志如下所示：