How to solve the problem of program startup jam caused by Mybatis error
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Program startup jam caused by Mybatis error
Troubleshooting method for program startup jam caused by mybatis xml error (without any error message, console jam)
Solution.
Raise the log level to debug to see if there is any abnormal information in the log.
Create a new class, inherit the org.mybatis.spring.SqlSessionFactoryBean class, overload the buildSqlSessionFactory method, catch the NestedIOException exception, and print the exception, as follows:
Public class MySqlSessionFactoryBean extends SqlSessionFactoryBean {protected SqlSessionFactory buildSqlSessionFactory () throws IOException {try {return super.buildSqlSessionFactory ();} catch (NestedIOException e) {/ /-XML prints exception e.printStackTrace (); throw new NestedIOException ("Failed to parse mapping resource:" + e);}
Modify the mybatis configuration file to replace org.mybatis.spring.SqlSessionFactoryBean with the newly created class, and start it again to output mybatis exception information in the console.
Cause analysis
When Spring parses the mapper.xml file and executes SqlSessionFactoryBean.buildSqlSessionFactory () to the breakpoint, the exception thrown is handled by spring, but no log information is output
Mybatis startup error
There was an error message while reviewing the basics of mybatis today.
The specific error reports are as follows
Exception in thread "main" org.apache.ibatis.binding.BindingException: Type interface com.hxb.mapper.AccountMapper is not known to the MapperRegistry.
At org.apache.ibatis.binding.MapperRegistry.getMapper (MapperRegistry.java:47)
At org.apache.ibatis.session.Configuration.getMapper (Configuration.java:745)
At org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper (DefaultSqlSession.java:292)
At com.hxb.test.test1.main (test1.java:22)
The main content is that the interface cannot be found, and there may be two problems.
1. The mapper file is not registered in the resource file.
2. Another kind of error is the miswriting of the namespace file in the mapper.xml file.
/ / incorrect writing / / correct writing
To sum up, use "." when you don't need a suffix, use / when you need a suffix.
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