Invalid bound statement (not found) solution summary

One 、 After the project is compiled , Check *mapper.xml Whether to build into the project , Please check out target Under the folder *mapper.xml Whether these exist , If there is no , Please rebuild .

Two 、 Check scan xml Of locations Whether it is right

      mybatis-plus.mapper-locations=classpath*:/mybatis/mapper/*.xml

for example ：1)resource The directory under the directory is mappers, Configuration file mapper

          2)*mapper.xml Misplaced

3、 ... and 、 Check *mapper.xml Of documents namespace Whether it is right

Four 、*mapper.xml in sql Of the statement id and namespace Medium mapper.java Whether the class method names are the same

5、 ... and 、 If it is confirmed that there are no above problems , Please modify the corresponding *mapper.xml file , for example ： Delete an empty line