今天遇到一个问题,原来是mapper.xml文件出了问题,是使用MyBatis最常见的一种错误 报错的结果是这样的: A query was run and no Result Maps were found for the Mapped Statement 'cn.zrgk.dao.RoleMapper.getRoleList'. It's likely that neither a Result Type nor a Result Map was specified. org.apache.
打印出三位水仙花数方法及解释 num = 100while num <= 999: #这里num 小于等于999 则运行 填1000也可以 a = num % 10 #num对10取余 b = num // 10 % 10 #num对10取整在取余 c = num // 100 #num对100取整 if num == a**3 + b**3 + c**3: #如果num等于 a b c 的三次方则打印 print(num) #打印 num += 1 #最终计算完num加1 调试输出:15337
javap可以打印出java的字节码: -c Prints out disassembled code, i.e., the instructions that comprise the Java bytecodes, for each of the methods in the class. These are documented in the Java Virtual Machine Specification @ http://do