mybatis-plus打印完整sql

 

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.mapping.ParameterMapping;
import org.apache.ibatis.plugin.*;
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.springframework.util.CollectionUtils;

import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Properties;
import java.util.regex.Matcher;

/**
 * @author 公众号: SimpleMemory
 * @version 1.0.0
 * @ClassName FullSQLInterceptor.java
 * @Description TODO
 * @createTime 2022年10月14日 18:39:00
 */
@Slf4j
@Intercepts(value = {
        @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}),
        @Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class})})
public class MybatisSqlLoggerInterceptor implements Interceptor {

    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        try {
            // 获取xml中的一个select/update/insert/delete节点，主要描述的是一条SQL语句
            MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
            Object parameter = null;
            // 获取参数，if语句成立，表示sql语句有参数，参数格式是map形式
            if (invocation.getArgs().length > 1) {
                parameter = invocation.getArgs()[1];
                log.error("sql-param:{}", parameter);
            }
           /* if (SqlCommandType.SELECT.equals(mappedStatement.getSqlCommandType())) {
            }*/
            // 获取到节点的id,即sql语句的id
            String sqlId = mappedStatement.getId();
            // BoundSql就是封装myBatis最终产生的sql类
            BoundSql boundSql = mappedStatement.getBoundSql(parameter);
            // 获取节点的配置
            Configuration configuration = mappedStatement.getConfiguration();
            // 获取到最终的sql语句
            String sql = getSql(configuration, boundSql, sqlId);
            log.info("sql->{}", sql);
        } catch (Exception e) {
        }
        // 执行完上面的任务后，不改变原有的sql执行过程
        return invocation.proceed();
    }

    /**
     * 封装了一下sql语句，使得结果返回完整xml路径下的sql语句节点id + sql语句
     *
     * @param configuration configuration
     * @param boundSql      boundSql
     * @param sqlId         sqlId
     * @return java.lang.String
     */
    public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId) {
        String sql = showSql(configuration, boundSql);
        StringBuilder str = new StringBuilder(100);
        str.append(sqlId);
        str.append(":");
        str.append(sql);
        return str.toString();
    }

    /**
     * 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, Locale.CHINA);
            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
     */
    public static String showSql(Configuration configuration, BoundSql boundSql) {
        Object parameterObject = boundSql.getParameterObject();  // 获取参数
        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) {
            TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry(); // 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
            if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
                sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(parameterObject)));

            } else {
                MetaObject metaObject = configuration.newMetaObject(parameterObject);// 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
                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");
                    }//打印出缺失，提醒该参数缺失并防止错位
                }
            }
        }
        return sql;
    }

    @Override
    public Object plugin(Object target) {
        return Plugin.wrap(target, this);
    }

    @Override
    public void setProperties(Properties properties) {

    }
}

 

SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();

MybatisSqlLoggerInterceptor printSqlInterceptor = new MybatisSqlLoggerInterceptor();
sessionFactory.addPlugins(printSqlInterceptor);