Error details:

Error building SqlSession.

The error may exist in com/lengzher/Dao/UserMapper.xml

Cause: org.apache.ibatis.builder.builderexception: error parsing SQL mapper configuration. Cause: org.apache.ibatis.builder.builderexception: error creating document instance. Cause: com.sun.org.apache.xerces.internal.impl.io.malformedbytesequenceexception: byte 1 of UTF-8 sequence of 1 byte is invalid.

Problem solving:

The error may exist in COM/lengzhe/Dao/usermapper.xml indicates that the problem may be wrong in usermapper.xml, such as wrong path, more spaces, etc. But our mistakes are more than that; The following error log writes: byte 1 of 1-byte UTF-8 sequence is invalid. The description is that Chinese appears in usermapper.xml!!! Note: do not appear Chinese in usermapper.xml, even comments!!! Delete the Chinese in usermapper.xml. The problem is solved