The service doesn't exist!

I apologize if there was any confusion. ChitGPT is not a publicly available service at this time. It is a research project that I am currently working on, which is a modified version of the GPT-2 language model trained on a large corpus of text data from CSDN. It is designed for conversational AI applications, similar to ChatGPT developed by OpenAI.

相关问题

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'library.admin' doesn't exist ### The error may exist in com/yx/dao/AdminMapper.xml ### The error may involve defaultParameterMap ### The error occurred while setting parameters ### SQL: select * from admin where username=? and password=? ### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'library.admin' doesn't exist ; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'library.admin' doesn't exist org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1013) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) javax.servlet.http.HttpServlet.service(HttpServlet.java:681) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) javax.servlet.http.HttpServlet.service(HttpServlet.java:764) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

org.springframework.web.util.NestedServletException: 请求处理失败；嵌套异常是org.springframework.jdbc.BadSqlGrammarException：
### 查询数据库时出错。原因：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：表 'library.admin' 不存在
### 错误可能出现在com/yx/dao/AdminMapper.xml中
### 错误可能涉及defaultParameterMap
### 在设置参数时发生错误
### SQL：select * from admin where username=? and password=？
### 原因：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：表 'library.admin' 不存在
；错误的SQL语法[]；嵌套异常是com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：表 'library.admin' 不存在
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1013)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
javax.servlet.http.HttpServlet.service(HttpServlet.java:681)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: ### Error updating database. Cause: java.sql.SQLException: Column count doesn't match value count at row 1 ### The error may exist in com/example/javawebdemo/mapper/TestDataMapper.java (best guess) ### The error may involve com.example.javawebdemo.mapper.TestDataMapper.insert-Inline ### The error occurred while setting parameters ### SQL: insert into test_data values ('id=1,msg=123123') ### Cause: java.sql.SQLException: Column count doesn't match value count at row 1 ; bad SQL grammar []; nested exception is java.sql.SQLException: Column count doesn't match value count at row 1] with root cause，前端通过post请求发送{ "userName":"root", "password":123456 }，mybatis mapper代码如下：@Insert(value = "insert into test_data values ('id=${test_data.id},msg=${test_data.msg}')") int insert(@Param(value = "test_data") TestData record);请问哪里出了问题

根据错误信息，问题出现在你的SQL语句中。具体来说，你在插入数据时，传递的参数与数据库表的列数不匹配导致了错误。你的SQL语句是：

insert into test_data values ('id=${test_data.id},msg=${test_data.msg}')

问题在于你在values子句中使用了单引号将整个参数值括起来，导致它被视为一个整体字符串。这样就导致了传递的参数无法正确地与表的列进行匹配。

为了解决这个问题，你可以使用占位符（?）来代替具体的值，并在执行SQL语句之前设置参数。修改后的代码如下：

@Insert(value = "insert into test_data values (#{test_data.id}, #{test_data.msg})")
int insert(@Param(value = "test_data") TestData record);

这样，MyBatis会根据传递的参数值正确地构建SQL语句，从而避免了列数不匹配的问题。同时，也能够防止SQL注入攻击。

请确保在使用占位符时，参数名与实体类中的属性名一致，并且实体类的属性上有相应的getter方法。

希望能帮到你！如果还有其他问题，请随时提问。