com.mysql.jdbc.exceptions.jdb

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:

MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last p

mysql

server

数据库

网络应用

failure

转载精选

ykppingfan

2014-04-02 13:06:29

678阅读

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:

分析，出现这种异常的原因是：MySQL服务器默认的“wait_timeout”是8小时，也就是说一个connection空间超过8个小时，mysql将自动

connection

超时

MySQLNonTransientCon

jsbc

exceptions

原创

wx6419609e20dfa

2023-03-22 01:49:26

167阅读

com.mysql.cj.jdbc.exceptions.CommunicationsException

The last packet successfully received from the server was 1,001,822 milliseconds ago. The last packet sent successfully to the server was 1,001,822 mi ...

html

ide

转载

mb5fd86d34c044c

2021-07-22 11:21:00

480阅读

2评论

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxError Exception

1、错误描述com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxError Exception：You have an error in your SQL syntax chec...

sql

mysql

创建数据库

MySQL

转载

mb5fe18fccaee95

2015-02-11 21:59:00

160阅读

2评论

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

错误报错如下：Error querying database. Cause: : com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'temp.a...

sql

mysql

字段

原创

三分恶在51CTO

2021-12-29 15:22:20

514阅读

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

由于我的sql语句是使用逆向工程生成的,然后sql语句拼写错误,就可以省略, 找到的原因是在页面想后端发送数据的时候,是以json格式进行传输的,然后没有解析,想直接存入到数据库中, 报出来的sql语句异常

java

mysql

sql

spring

apache

转载

mob604756fc5b03

2019-04-08 16:04:00

248阅读

2评论

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

错误报错如下：Error querying database. Cause: : com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'temp.appl

sql

mysql

字段

原创

三分恶在51CTO

2022-04-18 16:32:05

572阅读

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException 异常解决

环境JDK1.8Mysql 8.0.20<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version></dependency>db.driver=com.mysql.jdbc.Driver

jdbc

mysql

java

编程

java编程

原创

陈皮的JavaLib

2021-07-12 14:35:56

2961阅读

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException 异常解决

环境JDK1.8Mysql 8.0.20<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId>

jdbc

mysql

java

sql

原创

陈皮的JavaLib

2022-02-08 17:27:04

639阅读

Mysql连接问题：com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejecte

MySQL

JDBC

Hibernate

Tomcat

框架

原创

wx637b589aee69c

2022-11-22 00:18:04

497阅读

Mysql连接问题：com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many

经验

mysql

原创

shamo8899

2021-07-20 14:05:23

1682阅读

com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Unknown column

看看sql语句和数据库中的字段是否对应。一般都是因为粗心大意写错了数据库字段名造成的。

数据库

字段名

字段

sql语句

it

转载

mob604757006a49

2010-11-28 18:45:00

73阅读

2评论

62-com.mysql.cj.jdbc.exceptions.PacketTooBigException

MySQL报错:Cause: com.mysql.cj.jdbc.exceptions.PacketTooBigException 出现的原因: MySQL会根据配置文件限制server接收的数据包大小在执行比较大数据插入或者更新的时候，会根据配置文件”max_allowed_packet “参数

数据库

MySQL

原创

liqiangbk

2021-07-30 09:50:51

303阅读

mysql连接com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link

omcat程序连接服务器mysql数据库，报com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet sent successfully to the server was 0 milliseconds ago. The driverhas not rece

mysql

服务器

转载精选

yunlielai

2013-03-14 16:15:26

10000+阅读

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Query was empty

1、错误描述[ERROR:]2015-07-15 20:22:55,599 [插入失败] org.hibernate.exception.SQLGrammarException: error executing ...

java

apache

spring

sql

mysql

转载

mb5fdb1266ce6df

2015-07-20 18:12:00

162阅读

2评论

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Query was empty

1 错误描述at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMe...

java

apache

spring

mysql

sql

转载

mb5fe18fccaee95

2015-06-24 19:12:00

145阅读

2评论

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureLast packet sent to the server

mybatis

mysql

java

apache

eclipse

原创

渭城朝雨浥轻尘

2022-06-24 18:35:32

530阅读

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to

折腾了好久，后来发现是版本问题，驱动和数据库不匹配导致。原来用的是5.1.37的驱动。数据库是mysql5.7，可以连接成功。就在我把数据库换成了8.0之后，所有的买点啥都报标题里的错误了。换成了下边这个驱动就OK了。解决方法:在pom.xml里面重新添加<groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.13&l

数据库

mysql

java

maven

右键

原创

Maynor学长

2021-08-26 11:14:04

465阅读

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to

折腾了好久，后来发现是版本问题，驱动和数据库不匹配导致。原来用的是5.1.37的驱动。数据库是mysql5.7，可以连接成功。就在我把数据库换成了8.0之后，所有的买点啥都报标题里的错误了。换成了下边这个驱动就OK了。解决方法:在pom.xml里面重新添加<groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.13&l

数据库

mysql

java

其他

原创

Maynor学长

2022-03-04 18:23:07

135阅读

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

IP address or hostname in JDBC URL is wrong. Hostname in JDBC URL is not recognized by local DNS server.Port number is missing or wrong in JDBC URL.DB server is down.DB server doesn't accept TCP/

java

原创

木子的昼夜

2022-03-01 13:37:40

107阅读

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com.mysql.jdbc.exceptions.jdb

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:

com.mysql.cj.jdbc.exceptions.CommunicationsException

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxError Exception

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException 异常解决

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException 异常解决

Mysql连接问题：com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException

Mysql连接问题：com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException

com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Unknown column

62-com.mysql.cj.jdbc.exceptions.PacketTooBigException

mysql连接com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Query was empty

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Query was empty

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'smvch'

FAQ（72）：### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '2147483

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate ent原因

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'user'