Tag Archives: Start error

[Solved] SpringBoot Project Startup Error: Field userMapper in com.demo.controller.MemberController required a bean of type ‘c

Error:
SpringBoot Project Startup Error: ‘com.xxx.mapper.XxxxMapper’ that could not be found

*************************** APPLICATION FAILED TO START

Description:
Field userMapper in com.demo.controller.MemberController required a
bean of type ‘com.demo.mapper.UserMapper’ that could not be found.
Action:
Consider defining a bean of type ‘com.demo.mapper.UserMapper’ in your
configuration.
Process finished with exit code 1

Reason: Cound not scan to find the mapper

Solution: Add @MapperScan("com.demo.mapper") in startup

When using idea to start a project, an error is reported: Error:java : Compilation failed: internal java compiler error

When using idea to start a project, an error is reported: Error:java : Compilation failed: internal java compiler error

(1) Error reason: the setting in Java compiler is inconsistent with the Java version used in the current project.

(2) Solution: if Java 1.8 is used in the project, it should be set to 1.8 in Java compiler.

The settings are as follows:

References: Click to open the link

Error running ‘xxxapplication’: no JDK for module ‘xxx’

When I was running the project today, I suddenly found that the project that had been well before could not be started. An error was reported

Error running ‘XXXApplication’: No jdk for module ‘XXX’

Normally, JDK is set in file – & gt; project structure, and there is no problem after checking

Later, after several twists and turns, through a direct search of JDK in settings, we found that there was such a place

The arrow points to the current state. Change this to the normal 1.8, and the project can run happily