摘要：运行环境: Intellij idea 14 在改了项目名称. 运行时候出现了 The APR based Apache Tomcat Native library which allows optimal performance in production environments was not 阅读全文

摘要：1.Java代码: 1.1 entity类: User.java public class User { private int userId; private String userName; private String password; private String comment; //这 阅读全文