<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[jiafugui的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/jiafugui</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; jiafugui]]></copyright><item><title><![CDATA[mysql 查询排名，1,2,2,4方式]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/109163463</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/109163463</guid><author>jiafugui</author><pubDate>Mon, 19 Oct 2020 16:33:12 +0800</pubDate><description><![CDATA[排名方式1,2,2,4

select wd.*, rank() over(order by wd.score desc) as rownum
from t_score wd
]]></description><category></category></item><item><title><![CDATA[spring boot 2.x 报错：No converter found for return value of type: class]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/108968231</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/108968231</guid><author>jiafugui</author><pubDate>Thu, 08 Oct 2020 20:52:07 +0800</pubDate><description><![CDATA[找了一下午终于找到错误的原因了：

我的跨域代码继承了WebMvcConfigurationSupport这个类，这样的话就会屏蔽springboot@EnableAutoConfiguration中的设置，这样spring boot就不能自动配置转换类。

解决方法：将继承WebMvcConfigurationSupport改为实现WebMvcConfigurer接口，这样的话就不会再报错了。

非常感谢大神的文章：

https://blog.youkuaiyun.com/fxbin123/article/det.]]></description><category></category></item><item><title><![CDATA[xcode离线下载地址]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/50631552</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/50631552</guid><author>jiafugui</author><pubDate>Wed, 03 Feb 2016 23:22:05 +0800</pubDate><description><![CDATA[https://developer.apple.com/downloads/]]></description><category></category></item><item><title><![CDATA[win7计算机无法连接到联机激活服务]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/50630496</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/50630496</guid><author>jiafugui</author><pubDate>Wed, 03 Feb 2016 17:25:28 +0800</pubDate><description><![CDATA[这个是由于DNS的问题造成的，将DNS改成：8.8.8.8 114.114.114.114
就好了]]></description><category></category></item><item><title><![CDATA[intellij 左右窗口联动]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/38041643</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/38041643</guid><author>jiafugui</author><pubDate>Tue, 22 Jul 2014 14:42:40 +0800</pubDate><description><![CDATA[intellij在切换代码选项卡的时候左侧的代码目录树chuangk]]></description><category></category></item><item><title><![CDATA[response.setContentType()的作用及参数]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8842941</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8842941</guid><author>jiafugui</author><pubDate>Wed, 24 Apr 2013 09:21:49 +0800</pubDate><description><![CDATA[response.setContentType(MIME)的作用是使客户端浏览器，区分不同种类的数据，并根据不同的MIME调用浏览器内不同的程序嵌入模块来处理相应的数据。
例如web浏览器就是通过MIME类型来判断文件是GIF图片。通过MIME类型来处理json字符串。

Tomcat的安装目录\conf\web.xml 中就定义了大量MIME类型 ，可以参考。
response.setC]]></description><category></category></item><item><title><![CDATA[ztree 模拟onclick事件的代码]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8809519</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8809519</guid><author>jiafugui</author><pubDate>Tue, 16 Apr 2013 16:04:25 +0800</pubDate><description><![CDATA[var tree=$.fn.zTree.getZTreeObj("topicTree");
                    var sel=tree.getNodeByParam('id','${topicId}');
                    /* tree.expandNode(sel,true,true, true, true);]]></description><category></category></item><item><title><![CDATA[MacPorts svn Unable to execute port: can't read "build.cmd": Failed to locate 'make' in path:]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8787994</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8787994</guid><author>jiafugui</author><pubDate>Thu, 11 Apr 2013 14:09:54 +0800</pubDate><description><![CDATA[macports 安装svn client报错
Qisens-MacBook-Pro:~ qisen$ sudo port install subversion
Password:
Warning: The Command Line Tools for Xcode don't appear to be installed; most ports will likely fail to bui]]></description><category></category></item><item><title><![CDATA[地球仪显示站点访问量]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8616335</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8616335</guid><author>jiafugui</author><pubDate>Wed, 27 Feb 2013 10:21:29 +0800</pubDate><description><![CDATA[http://www.revolvermaps.com/?target=setup]]></description><category></category></item><item><title><![CDATA[端口占用]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8601098</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8601098</guid><author>jiafugui</author><pubDate>Fri, 22 Feb 2013 09:15:57 +0800</pubDate><description><![CDATA[cmd
netstat -ao
根据pid在任务管理器重结束掉相应的进程，如果是重要程序占用进程请选择其它的端口。]]></description><category></category></item><item><title><![CDATA[win7 C盘瘦身]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8558567</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8558567</guid><author>jiafugui</author><pubDate>Thu, 31 Jan 2013 10:17:21 +0800</pubDate><description><![CDATA[一、更改索引文件的位置
如果需要释放硬盘上的空间，则可以更改索引的位置。如果更改此位置，则 Windows 搜索服务将自动重新启动，但在重新启动完成前，更改不会生效。


通过单击「开始」按钮 ，然后单击“控制面板”，打开“索引选项”。
 在搜索框中，键入索引选项，然后单击“索引选项”。

单击“高级”。 
 如果系统提示您输入管理员密码或进行确认，请键入该密码或提供确认。]]></description><category></category></item><item><title><![CDATA[vmware fusion 5 install fedora18]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8547109</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8547109</guid><author>jiafugui</author><pubDate>Sun, 27 Jan 2013 21:31:04 +0800</pubDate><description><![CDATA[I always live in hope that just one day, the folks over at Fedora will actually have a pain free VMWare installation. Not to be. Here’s how to do it with the minimal gnashing of teeth.
Bugs that get]]></description><category></category></item><item><title><![CDATA[mac 快捷键]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8434064</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8434064</guid><author>jiafugui</author><pubDate>Tue, 25 Dec 2012 16:35:19 +0800</pubDate><description><![CDATA[记录的是本比较常用的快捷键（不断更新）
锁屏：option+command+光盘推出键
全屏：control+command+f
打开强制退出的对话框：option+command+esc


eclipse快捷键：
复制粘贴等：cmmand+c / v / x
注释单行：cammand+/
注释多行：control+command+/  反注释+ \]]></description><category></category></item><item><title><![CDATA[java ee 面试题 总结]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8226714</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8226714</guid><author>jiafugui</author><pubDate>Mon, 26 Nov 2012 17:20:50 +0800</pubDate><description><![CDATA[以下都是我在面试中遇到的问题：
1.算法： 
 排序算法
二叉树算法（广度优先、深度优先）
2.java基础：
字符串 == equals
线程，stop sleep
描述一下你知道的集合框架以及他们的区别。
面向对象的特性
jdbc 并发处理
3.数据库
并发的事务（事务隔离机制）
排序 分组 having子句
大数据量模糊查询
4.ssh
ssh的优缺点
spr]]></description><category></category></item><item><title><![CDATA[spring mvc 入门例子]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8213344</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8213344</guid><author>jiafugui</author><pubDate>Thu, 22 Nov 2012 17:15:28 +0800</pubDate><description><![CDATA[http://blog.springsource.com/2011/01/04/green-beans-getting-started-with-spring-mvc/]]></description><category></category></item><item><title><![CDATA[oracle数据库事务及隔离级别的一些概念]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8207041</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8207041</guid><author>jiafugui</author><pubDate>Wed, 21 Nov 2012 11:10:13 +0800</pubDate><description><![CDATA[1.     事务的4个特性
·         Atomicity(原子性)
All tasks of a transaction are performed ornone of them are. There are no partial transactions. For example, if atransaction starts updating 100 rows, but the]]></description><category></category></item><item><title><![CDATA[软件缩写]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8198803</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8198803</guid><author>jiafugui</author><pubDate>Mon, 19 Nov 2012 11:41:48 +0800</pubDate><description><![CDATA[1.【ACID】
ACID，指数据库事务正确执行的四个基本要素的缩写。包含：原子性(Atomicity）、一致性（Consistency）、隔离性（Isolation）、持久性（Durability）。一个支持事务（Transaction）的数据库系统，必需要具有这四种特性，否则在事务过程（Transaction processing）当中无法保证数据的正确性，交易过程极可能达不到交易方的要求。]]></description><category></category></item><item><title><![CDATA[mac 下 call of duty 4在外接屏显示]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8144605</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8144605</guid><author>jiafugui</author><pubDate>Sat, 03 Nov 2012 21:12:28 +0800</pubDate><description><![CDATA[将笔记本的盖子盖上，等几秒，待机以后，会自动显示到外接屏，用外接鼠标打开游戏，进入游戏后在打开盖子，就会显示在外接屏了]]></description><category></category></item><item><title><![CDATA[解决netgear路由器总掉线的问题]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8095182</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8095182</guid><author>jiafugui</author><pubDate>Sun, 21 Oct 2012 13:45:53 +0800</pubDate><description><![CDATA[把你的无线频道改成01或者06或者11，不要自动。
还有连接模式选项要选“一直连接”。]]></description><category></category></item><item><title><![CDATA[查询oracle约束所关联的表]]></title><link>https://blog.youkuaiyun.com/jiafugui/article/details/8007911</link><guid>https://blog.youkuaiyun.com/jiafugui/article/details/8007911</guid><author>jiafugui</author><pubDate>Sat, 22 Sep 2012 17:59:58 +0800</pubDate><description><![CDATA[ORA-02292: 违反完整约束条件 (ADMIN.FK_PROJECTP_RELATIONS_OFFICIAL) - 已找到子记录

遇到这样的错误，熟悉的话可能从约束名称看出是那张表的约束，因为名字可能是表明的缩写组成的 如果你没有改过的话。
如果看不出是哪张表的可以通过以下这种方法进行差查询：
 
select * from user_constraints where cons]]></description><category></category></item></channel></rss>