mybatis拦截器打印完整sql并记录数据库

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结合自定义注解

import java.lang.annotation.*;

/**
 * 指定mapper方法中开启sql同步
 *
 * @author zhoumin
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SqlLogs {

    /**
     * 是否同步sql
     */
    boolean hasSqlLog() default false;

}

自定义拦截器中获取bean

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringContextHolder implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Autowired
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextHolder.applicationContext = applicationContext;
    }


    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }


    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean.
     *
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }

}

自定义拦截器

import com.baomidou.mybatisplus.core.toolkit.PluginUtils;
import com.baomidou.mybatisplus.extension.handlers.AbstractSqlParserHandler;
import com.chinadci.fj.entity.Handlerecord;
import com.chinadci.fj.mapper.HandlerecordMapper;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.*;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.SystemMetaObject;
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.stereotype.Component;

import java.lang.reflect.Method;
import java.sql.Connection;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Properties;

/**
 * sql同步
 *
 * @author zhoumin
 */
@Slf4j
@AllArgsConstructor
@Intercepts({
        @Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}),
        @Signature(type = StatementHandler.class, method = "prepare", args = {Connection.class, Integer.class})
})
@Component
public class SqlLogsInterceptor extends AbstractSqlParserHandler implements Interceptor {

    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        Boolean hasSqlLogs = false;
        StatementHandler statementHandler = PluginUtils.realTarget(invocation.getTarget());
        MetaObject metaObject = SystemMetaObject.forObject(statementHandler);
        this.sqlParser(metaObject);
        MappedStatement mappedStatement =
                (MappedStatement) metaObject.getValue("delegate.mappedStatement");
        if (SqlCommandType.SELECT.equals(mappedStatement.getSqlCommandType())) {
            return invocation.proceed();
        }
        //获取执行方法的位置
        String namespace = mappedStatement.getId();
        //获取mapper名称
        String className = namespace.substring(0, namespace.lastIndexOf("."));
        //获取方法名
        String methedName = namespace.substring(namespace.lastIndexOf(".") + 1);
        //获取当前mapper 的方法
        Method[] ms = Class.forName(className).getMethods();
        for (Method m : ms) {
            if (m.getName().equals(methedName)) {
                SqlLogs annotation = m.getAnnotation(SqlLogs.class);
                if (annotation != null) {
                    hasSqlLogs = annotation.hasSqlLog();
                }
            }
        }
        //如果是有注解值为true,便获取sql处理参数
        if (hasSqlLogs) {
            BoundSql boundSql = (BoundSql) metaObject.getValue("delegate.boundSql");
            // 获取sql
            //String sql = formatSql(boundSql, mappedStatement.getConfiguration()).concat(";");
            String sql = formatSql(boundSql, mappedStatement.getConfiguration());
            Handlerecord handlerecord = new Handlerecord();
            handlerecord.setSqlstr(sql);
            handlerecord.setTitle(methedName);
            HandlerecordMapper handlerecordMapper = SpringContextHolder.getBean(HandlerecordMapper.class);
            handlerecordMapper.insert(handlerecord);
        }
        return invocation.proceed();

    }


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

    @Override
    public void setProperties(Properties properties) {

    }


    private static final ThreadLocal<SimpleDateFormat> DATE_FORMAT_THREAD_LOCAL = ThreadLocal.withInitial(() -> new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));

    /**
     * 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) + "'";
                    } else {
                        paramValueStr = value + "";
                    }
                    sql = sql.replaceFirst("\\?", paramValueStr);
                }
            }
        }
        return sql;
    }

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


}

在mapper中使用


   @SqlLogs(hasSqlLog=true)
   void insertOverseer(Overseer overseer);

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