怎么在springboot中将sql语句打印到控制台

本篇文章为大家展示了怎么在springboot中将sql语句打印到控制台，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

1.简介

每当写完持久化语句时肯定免不了要查漏补缺一波。这里就可以将执行的sql打印到控制台来检查sql语句哪里出了问题。

2.配置

配置非常简单，只需要在配置文件中设置下mapper日志级别就可以了

3.代码

application-test.properties
#logging.level.mapper的路径=异常级别
logging.level.com.shuhe360.auth.auth_main_car_api.mapper.CarConsumeRecordMapper=DEBUG

4.jpa

如果操作数据库用的jpa也可以来手动开启打印语句到控制台的

5.jpa开启

# JPA 相关配置
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
#这里开启sql打印
spring.jpa.show-sql=false
#程序启动时删除并创建实体类对应的那个表（危险）
spring.jpa.hibernate.ddl-auto=none

springboot 打印sql 语句

在配置文件中 application.yml 配置如下其一即可

方式一：

logging:
    level:
      com.xxx.com.dao.mapper: DEBUG //包路径为mapper文件包路径

打印出来的形式如下：

2019-01-24 08:02:14.245 [http-nio-8060-exec-2] DEBUG c.s.a.m.m.U.getUsernameExistSet 159 - ==> Preparing: SELECT username FROM user_info WHERE username in ( ? , ? , ? )
2019-01-24 08:02:14.245 [http-nio-8060-exec-2] DEBUG c.s.a.m.m.U.getUsernameExistSet 159 - ==> Parameters: nike16(String), nike14(String), nike15(String)
2019-01-24 08:02:14.307 [http-nio-8060-exec-2] DEBUG c.s.a.m.m.U.getUsernameExistSet 159 - <== Total: 0
2019-01-24 08:02:14.323 [http-nio-8060-exec-2] DEBUG c.s.a.m.mapper.UserMapper.saveBatch 159 - ==> Preparing: INSERT INTO user_info ( username, password, email, telphone, birthday, createTime, updateTime ) values ( ?, ?, ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ?, ?, ? )
2019-01-24 08:02:14.323 [http-nio-8060-exec-2] DEBUG c.s.a.m.mapper.UserMapper.saveBatch 159 - ==> Parameters: nike14(String), 4f757a334d69b32b586f3694fbaaa9a9869aee184f98e009b6e02b170f92eb9f(String), hgaha@qq.com(String), null, 2018-03-02 02:01:02.0(Timestamp), 2019-01-24 08:02:14.307(Timestamp), 2019-01-24 08:02:14.307(Timestamp), nike15(String), 18a1c9f3e7a69e3f72ab5d80caea96e5c90f5fada8f9a7e92238dc4242ba03f8(String), hgaha@qq.com(String), null, 2018-03-02 02:01:02.0(Timestamp), 2019-01-24 08:02:14.307(Timestamp), 2019-01-24 08:02:14.307(Timestamp), nike16(String), 5912bd4ff3ae134b15347610b64d9f352dd3c89dd2fb5c495cf4699683b33271(String), hgaha@qq.com(String), null, 2018-03-02 02:01:02.0(Timestamp), 2019-01-24 08:02:14.307(Timestamp), 2019-01-24 08:02:14.307(Timestamp)
2019-01-24 08:02:14.338 [http-nio-8060-exec-2] DEBUG c.s.a.m.mapper.UserMapper.saveBatch 159 - <== Updates: 3

方式二：

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

打印出来的形式如下

Creating a new SqlSession
Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e943ddb]
JDBC Connection [HikariProxyConnection@898692052 wrapping com.mysql.jdbc.JDBC4Connection@6a0c5a04] will be managed by Spring
==> Preparing: DELETE FROM user_info WHERE uid in ( ? , ? , ? )
==> Parameters: 44(Long), 45(Long), 46(Long)
<== Updates: 0
Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e943ddb]
Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e943ddb]
Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e943ddb]
Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e943ddb]

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