DuplicateKeyException异常处理:java向数据库插入数据异常

朴灿烈づ我的快乐病毒、 2022-05-15 01:05 378阅读 0赞

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3.  [org.springframework.dao.DataIntegrityViolationException][]
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9.  [Springboot The temporary upload location is not valid][]

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**文章目录：**

问题描述：

问题报错:

解决方法:

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### 问题描述： ###

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`向数据库中插入数据发生异常`

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### **`问题报错:`** ###

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.DuplicateKeyException: 
    ### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '7' for key 'PRIMARY'
    ### The error may involve cn.itcast.ssm.mapper.ItemsMapper.addItems-Inline
    ### The error occurred while setting parameters
    ### SQL: insert into items(id,name,price,pic,createtime,detail)values(?,?,?,?,?,?)
    ### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '7' for key 'PRIMARY'
    ; SQL []; Duplicate entry '7' for key 'PRIMARY'; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '7' for key 'PRIMARY'
    	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:927)
    	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)
    	javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
    	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)
    	javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107

### **解决方法:** ###

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出现以下异常，**com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '7' for key 'PRIMARY'；说明在数据库中这一列，它是关键字！这个关键字数据库中有，所以出现下面异常；就需要把关键字换成数据库表中没有存在的字。**

[github]: https://github.com/zhangyu345293721
[DuplicateKeyException_java]: https://blog.csdn.net/zy345293721/article/details/81948054
[springboot_UnsatisfiedDependencyException]: https://blog.csdn.net/zy345293721/article/details/101208836
[org.springframework.dao.DataIntegrityViolationException]: https://blog.csdn.net/zy345293721/article/details/98873214
[com.mysql.jdbc.MysqlDataTruncation_ Data truncation_ Data too long for column _current_state]: https://blog.csdn.net/zy345293721/article/details/95996834
[java_ _error_ _Internal Server Error]: https://blog.csdn.net/zy345293721/article/details/95981023
[The Tomcat connector configured to listen on port 8888 failed to start]: https://blog.csdn.net/zy345293721/article/details/93177838
[java.nio.charset.MalformedInputException]: https://blog.csdn.net/zy345293721/article/details/90764384
[org.apache.ibatis.binding.BindingException_ Invalid bound statement _not found_ com.geekplus.dao]: https://blog.csdn.net/zy345293721/article/details/89486862
[Springboot The temporary upload location is not valid]: https://blog.csdn.net/zy345293721/article/details/110916289