java遍歷實體類的屬性和值

代碼如下：

實體類：

public class User implements Serializable {

    private static final long serialVersionUID = 1L;

    private String pkid;
    
    private String userName;
    
    private String passWord;
    
    private String roleID;
}

遍歷：

public class test {

        public static void main(String[] args) throws Exception{  
            User e = new User();  
            reflect(e);  
        }
        
        public static void reflect(User e) throws Exception{  
            Class cls = e.getClass();  
            Field[] fields = cls.getDeclaredFields();  
            for(int i=0; i<fields.length; i++){  
                Field f = fields[i];  
                f.setAccessible(true);  
                System.out.println("屬性名:" + f.getName() + " 屬性值:" + f.get(e));  
            }   
        } 
}

輸出：