Hiytunes的博客

从struts标签转jstl标签，没有if else的解决办法： <c:choose>         <c:when test="a == 1"> ${a}</c:when>      //当a==1时         <c:otherwise>${b}</c:otherwise>      //其他... </c:cho..

实体类实现Comparator 接口的compare方法 如： @Override public int compare(Object o1, Object o2) { PersonInfo p1 = (PersonInfo)o1; PersonInfo p2 = (PersonInfo)o2; return p1.getUserType().compareTo(p...

首先将所有实体类都继承BaseEntity:BaseEntity:package org.ty.cloudCourse.entity; import java.util.HashMap; import java.util.Map; /** * @author kangtaiyang * @date 2018/7/3 */ public abstract class BaseEntity ...

redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool...异常体...Caused by: redis.clients.jedis.exceptions.JedisDataException: ERR Client sent AUTH, but no passw...

Stream操作分两种，惰性求值和及早求值 返回值是Stream的是惰性求值，返回其他或返回空的则是及早求值 惰性求值的例子： list.stream().filter(x -> { System.out.println(x); return x.getClazz().equals("会计"); }); 该例只是刻画了stream，并没有做任何操作，所以并不会有打印...