插件类

import java.lang.reflect.Field;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Properties;

import org.apache.commons.lang.StringUtils;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.mapping.ParameterMode;
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.scripting.defaults.DefaultParameterHandler;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.Ordered;
import org.springframework.util.ReflectionUtils;


@Intercepts({
        @Signature(type = StatementHandler.class, method = "query", args = { Statement.class, ResultHandler.class }),
        @Signature(type = StatementHandler.class, method = "update", args = { Statement.class }),
        @Signature(type = StatementHandler.class, method = "batch", args = { Statement.class }) })
public class MybatisSqlPrintIntercepter implements Interceptor, Ordered {
    private static final Logger logger = LoggerFactory.getLogger(MybatisSqlPrintIntercepter.class);
    private Configuration configuration = null;

    private static final ThreadLocal<SimpleDateFormat> DATE_FORMAT_THREAD_LOCAL = new ThreadLocal<SimpleDateFormat>() {
        @Override
        protected SimpleDateFormat initialValue() {
            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        }
    };

    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        Object target = invocation.getTarget();
        long startTime = System.currentTimeMillis();
        try {
            return invocation.proceed();
        } finally {
            try {
                long endTime = System.currentTimeMillis();
                long sqlCost = endTime - startTime;
                StatementHandler statementHandler = (StatementHandler) target;
                BoundSql boundSql = statementHandler.getBoundSql();
                if (configuration == null) {
                    final DefaultParameterHandler parameterHandler = (DefaultParameterHandler) statementHandler
                            .getParameterHandler();
                    Field configurationField = ReflectionUtils.findField(parameterHandler.getClass(), "configuration");
                    ReflectionUtils.makeAccessible(configurationField);
                    this.configuration = (Configuration) configurationField.get(parameterHandler);
                }
                // 替换参数格式化Sql语句，去除换行符
                String sql = formatSql(boundSql, configuration).concat(";");
                String  warning = "";
                if(sqlCost > 100) {
                    warning  = "[耗时过长]";
                }
                logger.info("SQL==> {}    执行耗时:{} ms {}", sql, sqlCost,warning);

            } catch (Exception e) {
                logger.error("==> 打印sql 日志异常 {}",e);
            }
        }
    }

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

    @Override
    public void setProperties(Properties properties) {

    }

    /**
     * 获取完整的sql实体的信息
     *
     * @param boundSql
     * @return
     */
    private String formatSql(BoundSql boundSql, Configuration configuration) {
        String sql = boundSql.getSql();
        List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
        Object parameterObject = boundSql.getParameterObject();
        // 输入sql字符串空判断
        if (StringUtils.isBlank(sql)) {
            return "";
        }
        if (configuration == null) {
            return "";
        }
        TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
        sql = beautifySql(sql);
        // 参考mybatis 源码 DefaultParameterHandler
        if (parameterMappings != null) {
            for (ParameterMapping parameterMapping : parameterMappings) {
                if (parameterMapping.getMode() != ParameterMode.OUT) {
                    Object value;
                    String propertyName = parameterMapping.getProperty();
                    if (boundSql.hasAdditionalParameter(propertyName)) {
                        value = boundSql.getAdditionalParameter(propertyName);
                    } else if (parameterObject == null) {
                        value = null;
                    } else if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
                        value = parameterObject;
                    } else {
                        MetaObject metaObject = configuration.newMetaObject(parameterObject);
                        value = metaObject.getValue(propertyName);
                    }
                    String paramValueStr = "";
                    if (value instanceof String) {
                        paramValueStr = "'" + value + "'";
                    } else if (value instanceof Date) {
                        paramValueStr = "'" + DATE_FORMAT_THREAD_LOCAL.get().format(value) + "'";
                        DATE_FORMAT_THREAD_LOCAL.remove();
                    } else {
                        paramValueStr = value + "";
                    }
                    sql = sql.replaceFirst("\\?", paramValueStr);


                }
            }
        }
        return sql;
    }

    private String beautifySql(String sql) {
        sql = sql.replaceAll("[\\s\n ]+", " ");
        return sql;
    }

    @Override
    public int getOrder() {
        return Ordered.HIGHEST_PRECEDENCE;
    }

}

注入

import com.baomidou.mybatisplus.autoconfigure.ConfigurationCustomizer;
import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
 * @Description
 * @Author
 * @Date
 */
@Configuration
public class MybatisPlusConfig {
    /**
     *   mybatis-plus分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor page = new PaginationInterceptor();
        page.setDialectType("mysql");
        return page;
    }

    @Bean
    public MybatisSqlPrintIntercepter mybatisSqlPrintIntercepter() {
        return new MybatisSqlPrintIntercepter();
    }


}