Reasons and solutions for Invalid bound statement (not found)

Steps to resolve errors

• What went wrong
• Possible Causes
• Solution

What went wrong

Error screenshot:

//BindingException data binding exception not found cannot be found
org.apache.ibatis.binding.BindingException:
Invalid bound statement (not found): com.kuan.edu.mapper.CourseMapper.getPublishCourseInfo

Possible Causes

Possible reasons for this error:

1. Whether the method names in the mapper file and xml are the same
   
   
   Usually this will not be a problem
2. Problems caused by maven's default loading mechanism
   When maven is loaded, the .java type files in the java folder are compiled, and other types of files will not be loaded
   

Solution

Solution:

1. Copy xml to target directory (not recommended)

2. Put the xml file in the resources directory (not recommended)

3. Implementation through configuration
   (1) Configure in the pom.xml file, let maven load the xml file by default, and then rebuild it

   src/main/java**/*.xmlfalse

After the build, we can see that the xml file appears in the target

(2) Add configuration in the Spring Boot configuration file application.proper (note that the path should be changed to where your xml is located)

#Configure the path of the mapper xml filemybatis-plus.mapper-locations=classpath:com/kuan/edu/mapper/xml/*.xml

The above two steps are indispensable, so the problem is solved.

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