MySQL server version for the right syntax to use near ''

1.配置不对，一直提示'' 

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_121]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_121]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_121]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_121]
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.48.jar:5.1.48]
    at com.mysql.jdbc.Util.getInstance(Util.java:408) ~[mysql-connector-java-5.1.48.jar:5.1.48]

2.生成mapper的代码

用mysql-connector-java-5.1.48-bin.jar 去生成代码Mapper代码，一直会报上面的错误。

查看数据库的基本信息为：

Server version: 8.0.18 MySQL Community Server - GPL 版本

最后的提示为：需要设置默认值，如果为非空的情况；修改一下sql语句，是是数据库设计的问题

要处理一下default的缺省值，不要缺省为null值，需要缺省一个如字符串为’‘，数值就可以一个不用数值

 

 


PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">






































 

3.生成的代码

INFO] Introspecting table t_user
log4j:WARN No appenders could be found for logger (org.mybatis.generator.internal.db.DatabaseIntrospector).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[INFO] Generating Record class for table t_user
[INFO] Generating Mapper Interface for table t_user
[INFO] Generating SQL Map for table t_user
[INFO] Saving file UserMapper.xml
[INFO] Saving file User.java
[INFO] Saving file UserMapper.java
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.427 s
[INFO] Finished at: 2020-01-14T14:58:23+08:00
[INFO] ------------------------------------------------------------------------