Table configuration with catalog null, one reason for schema null error

I have the following warning prompt when I am debugging MyBatis:

Generation Warnings occured
Table configuration with catalog null, schema null, and table table name did not resolve to any tables
The Mybatis generator operation did not produce a result.

Find information in many places in my

In the Generatorconfig.xml file:

<jdbcconnection driverclass= "Com.mysql.jdbc.Driver" connectionurl= "jdbc:mysql://localhost:3306/" userid= "username" password= "Password"/>

That's it for you:

<jdbcconnection driverclass= "Com.mysql.jdbc.Driver" connectionurl= "jdbc:mysql://localhost:3306/ library name? Characterencoding=utf8"userid=" username "password=" password "/>

may be helpful to everyone.

Table configuration with catalog null, one reason for schema null error