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原创 时间date工具
package com.gzlp.core.util; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.*; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * @author:Neptune * @Description:DateUtil 提供一些常用的时间想法的方法 */ public
2020-09-27 18:44:48
249
原创 安装redis
1.安装C语言环境 yum install gcc-c++ 2.下载redis 2.1解压 tar zxvf redis-3.0.0.tar.gz 3.移动redis mv 文件 路径(usr)如:mv redis-4.0.11 usr 4.查看目录 ll 5.进入目录 cd usr 6.安装redis make install PREFIX=安装路径 如:make install P...
2019-11-06 20:19:49
173
原创 实现成功的状态代码封装类
package com.zyq.pojo; import java.util.HashMap; import java.util.Map; /** * * 状态信息返回类 * * * */ public class Mag { private int code; private String msg; private Map<String...
2019-10-25 16:28:17
231
原创 冒泡排序
冒泡排序 两个相邻的元素进行比较,一共有两个循环,外面的循环比较的次数是数组长度-1,里面的是长度-1-外面的变量。两个循环都是从0开始遍历 public class hello { public static void main(String[] args) { int[] a=new int[]{5,4,2,3,9,8};//创建数组,需要new 存放在堆内存中 for(int...
2019-10-23 19:15:14
189
原创 ajax返回数据的遍历$.each(json,function(index,item)
$.each(json,function(index,item) 里面的index代表当前循环到第几个索引, item表示遍历后的当前对象, 比如json数据为: [{“name”:“a”},{“name”:“b”},{“name”:“c”}] 使用foreach遍历后, index,item 依次为, 0,{“name”:“a”} 1,{“name”:“b”} 2,{“name”:“c”} ...
2019-10-16 08:49:37
962
原创 没有连接数据库
*************************** APPLICATION FAILED TO START *************************** Description: Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be ...
2019-09-09 23:57:05
433
原创 mapper路径配置错误
Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured. Reason: Failed to determine a suitable driver class Action: Consider the following: I...
2019-09-08 17:52:10
543
原创 springboot+mybatis+thymeleaf,在如果出现下面的错误
This application has no explicit mapping for /error, so you are seeing this as a fallback. Sun Sep 08 14:30:22 CST 2019 There was an unexpected error (type=Internal Server Error, status=500). Error re...
2019-09-08 14:42:46
340
原创 在springboot整合mybatis时,出现错误
he method’s class, org.apache.ibatis.builder.xml.XMLConfigBuilder, is available from the following locations:* 把依赖 <!--<dependency> <groupId>org.apache.ibatis</groupI...
2019-09-08 10:33:15
631
原创 NoSuchMethodException: com.zyq.pojo.User.<init>()
NoSuchMethodException: com.zyq.pojo.User.()## 标题 实体类没有空的构造方法
2019-09-06 19:19:56
221
原创 处理Mybatis框架的时候,出现下面错误时Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Sta
Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for mapper.UserMapper.selAll ### Cause: java.lang.IllegalArgumentException: Mapp...
2019-09-04 19:29:52
11891
原创 spring的aop,配置通知的时候出现but was actually of type 'com.sun.proxy.$Proxy2' at错误提示
** Exception in thread “main” org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named ‘userService’ is expected to be of type ‘com.zyq.service.impl.UserServiceImpl’ but was actual...
2019-09-04 10:26:08
412
原创 Spring的注解Autowired 的自动注入属性值,出现空指针异常问题
**@TOCException in thread “main” java.lang.NullPointerException at com.zyq.print.Print.prints(Print.java:26) at com.zyq.test.Test.main(Test.java:23) 出现这样的情况,是因为在applicationContext.xml文件中没有配置扫描注解,此时需要 ...
2019-09-03 21:03:08
1699
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