java.sql.SQLException: Access denied for user 'root'@'10.1.0.2' (using password: YES)

java.sql.SQLException: Access denied for user 'root'@'10.1.0.2' (using password: YES)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:835)
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:455)
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240)
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at com.baomidou.mybatisplus.generator.config.DataSourceConfig.getConn(DataSourceConfig.java:183)
    at com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder.handlerDataSource(ConfigBuilder.java:270)
    at com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder.<init>(ConfigBuilder.java:136)
    at com.baomidou.mybatisplus.generator.AutoGenerator.execute(AutoGenerator.java:92)
    at com.qingmu.mybaitsplus.code.CodeGenerator.main(CodeGenerator.java:139)
Exception in thread "main" java.lang.NullPointerException
    at com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder.getTablesInfo(ConfigBuilder.java:442)
    at com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder.handlerStrategy(ConfigBuilder.java:282)
    at com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder.<init>(ConfigBuilder.java:143)
    at com.baomidou.mybatisplus.generator.AutoGenerator.execute(AutoGenerator.java:92)
    at com.qingmu.mybaitsplus.code.CodeGenerator.main(CodeGenerator.java:139)

修改一下配置文件中的ip地址就可以.

来源：https://www.cnblogs.com/qingmuchuanqi48/p/11877377.html