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IDEA Maven配置 https://blog.csdn.net/qq_32588349/article/details/51461182 阅读全文
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Several ports (8005, 8080, 8009) required by Tomcat v8.0 Server at localhost are already in use. The server may already be running in another process, 阅读全文
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Mapped Statements collection does not contain value for后面是什么类什么方法之类的： 错误原因有几种： 1、mapper.xml中没有加入namespace 2、mapper.xml中的方法和接口mapper的方法不对应 3、mapper.xml 阅读全文