<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[fly0744的专栏]]></title><description><![CDATA[专注程序认识]]></description><link>https://blog.youkuaiyun.com/fly0744</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; fly0744]]></copyright><item><title><![CDATA[weblocket开发前后端所遇到的问题归纳]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/81321838</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/81321838</guid><author>fly0744</author><pubDate>Tue, 31 Jul 2018 22:22:11 +0800</pubDate><description><![CDATA[这个月项目需要用到推送消息的应用，框架上采用websocket，这里记录下所踩的坑，我用的tomcat7+nginx+websocket
一、前端：
1、chrome测试接口的时候，报错failed: Error during WebSocket handshake: Unexpected response code: 404
原因：因为项目中导入了websocket-api.jar
解决：
如果...]]></description><category></category></item><item><title><![CDATA[java几类访问权限的总结]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/54016495</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/54016495</guid><author>fly0744</author><pubDate>Wed, 04 Jan 2017 10:25:09 +0800</pubDate><description><![CDATA[public: 可以被 任何地方的别的类 访问

protected：可以被同一个package的类 和 该类的子类 访问

默认：只可以被 同一个包内的类 访问

private：只可以被自己访问]]></description><category></category></item><item><title><![CDATA[spring3.1xml配置和注解两种方式总结]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/50420962</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/50420962</guid><author>fly0744</author><pubDate>Mon, 28 Dec 2015 19:36:07 +0800</pubDate><description><![CDATA[spring3.1xml配置和注解两种方式总结]]></description><category></category></item><item><title><![CDATA[oracle经验]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/48544565</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/48544565</guid><author>fly0744</author><pubDate>Fri, 18 Sep 2015 11:48:42 +0800</pubDate><description><![CDATA[1．删除表空间 
　　DROP TABLESPACE TableSpaceName [INCLUDING CONTENTS [AND DATAFILES]] 
　　 
　　2．删除用户 
　　DROP USER User_Name CASCADE 
　　3．删除表的注意事项 
　　 
　　在删除一个表中的全部数据时，须使用TRUNCATE TABLE 表名;因为用DROP TABLE]]></description><category></category></item><item><title><![CDATA[导出excel到本地]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/24432201</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/24432201</guid><author>fly0744</author><pubDate>Thu, 24 Apr 2014 19:41:47 +0800</pubDate><description><![CDATA[//根据登录名查询，显示其权限下的编码号

String s_pageno = request.getParameter("pageno");
String s_rowsize = request.getParameter("rowsize");
String orderby = request.getParameter("orderby");
String ordertype = re]]></description><category></category></item><item><title><![CDATA[js得到从后台request.setAttrabute里面设置进来的值]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/21722787</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/21722787</guid><author>fly0744</author><pubDate>Fri, 21 Mar 2014 15:47:27 +0800</pubDate><description><![CDATA[var chiRoomId = ((temp = window.location.href.indexOf("time1=")) > -1) ? window.location.href.substr((temp+6), 7) : 0;          // 厂房ID]]></description><category></category></item><item><title><![CDATA[一个页面多个页签的实现（css样式）]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/19823391</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/19823391</guid><author>fly0744</author><pubDate>Mon, 24 Feb 2014 14:57:38 +0800</pubDate><description><![CDATA[html源码：






无标题文档








#tabs {
overflow: hidden;
width: 100%;
margin: 0;
padding: 0;
list-style: none;
}
#tabs li {
float: left;
margin: 0 .5em 0 0;
}
#tabs a {
positi]]></description><category></category></item><item><title><![CDATA[java.io.FileNotFoundException: D:\Test (拒绝访问。)]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/19617835</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/19617835</guid><author>fly0744</author><pubDate>Fri, 21 Feb 2014 14:01:53 +0800</pubDate><description><![CDATA[解决java.io.FileNotFoundException: D:\Test (拒绝访问。)问题



源码：

public static void main(String[] args)
{
File file = new File("D:\\Test");
try
{
BufferedWriter bf = new BufferedWriter(new FileWr]]></description><category></category></item><item><title><![CDATA[google jquery jquery取得table的第几行几列]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/18268229</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/18268229</guid><author>fly0744</author><pubDate>Tue, 14 Jan 2014 17:34:09 +0800</pubDate><description><![CDATA[$("#M7table tr:eq(1) td:eq(1)").html()
$("#M7table tr:eq(1) td:eq(2)").html()]]></description><category></category></item><item><title><![CDATA[split方法使用的经验。]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/17680699</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/17680699</guid><author>fly0744</author><pubDate>Mon, 30 Dec 2013 14:36:17 +0800</pubDate><description><![CDATA[split方法用起来很方便，也很容易，比如 String str = ""1,1,2";
str.split(",");那么得到的是一个长度为三的数组，但在实际的开发中，总有些奇葩的事情发生，
比如我的后台传来的字符串为“sdf,sdf,123,,,,” 利用split分割的时候，因为后面的为空，所以会被忽略，但
若传来的为“”（也就是说逗号之间是空字符串，而是不什么都没有），又会正常。而且]]></description><category></category></item><item><title><![CDATA[eclipse调试鼠标放上去显示变量值]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/17137981</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/17137981</guid><author>fly0744</author><pubDate>Thu, 05 Dec 2013 10:59:02 +0800</pubDate><description><![CDATA[在eclipse中调试时，鼠标移动到变量上不显示值，这个原来自己也遇到过，没注意，反正就使用ctrl+shift+i嘛，也可以的，刚查了一下，解决方法如下：
 
Window->Preferences->Java->Editor->Hovers 将[Variable Values]选择即可，如果第一个[Combined Hover]已经勾选，则将这个勾去掉，勾选[Variable Values]]></description><category></category></item><item><title><![CDATA[CSS背景图片随层的大小整体放大缩小，兼容IE、FF、谷歌]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/16946499</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/16946499</guid><author>fly0744</author><pubDate>Mon, 25 Nov 2013 16:33:12 +0800</pubDate><description><![CDATA[css代码：
#view1{
position: absolute;
left:100px;
width: 1194px;
height: 567px;
background: 
url(img/22.jpg);
background-size: 100% 100%;
filter:progid:DXImageTransform.Microsoft.AlphaImageLoade]]></description><category></category></item><item><title><![CDATA[页面包含js的不同位置报错 SCRIPT5007: 无法获取属性“x”的值: 对象为 null 或未定义]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/16827251</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/16827251</guid><author>fly0744</author><pubDate>Tue, 19 Nov 2013 16:58:03 +0800</pubDate><description><![CDATA[将js包含在页面上部，报错
SCRIPT5007: 无法获取属性“x”的值: 对象为 null 或未定义 
raphael.js, 行4714 字符13


将js包含在页面最下面，页面正常]]></description><category></category></item><item><title><![CDATA[（快捷键，技巧）eclipse、UE列编辑]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/14519773</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/14519773</guid><author>fly0744</author><pubDate>Fri, 08 Nov 2013 11:52:56 +0800</pubDate><description><![CDATA[eclipse列编辑 alt+shift+a 
UE列编辑 alt + c]]></description><category></category></item><item><title><![CDATA[svn无法更新（提交）报错 javahl.ClientException: Working copy not locked;提交报错-RA layer request failed的解决方法]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/14223035</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/14223035</guid><author>fly0744</author><pubDate>Wed, 06 Nov 2013 10:19:33 +0800</pubDate><description><![CDATA[A、更新解决方法
更新报错是eclipse把src文件夹中的.svn文件夹也"编译"到WEB-INF/classes中去了，而复制过来的.svn中存储的是src文件夹中的版本信息，从而导致在更新时出错。

eclipse开发过程经常进行自动编译和发布，这导致/web-inf/目录下相关文件夹对应的.svn文件夹被连同删除，导致同步时出现：svn' containing working cop]]></description><category></category></item><item><title><![CDATA[解决com.mysql.jdbc.PacketTooBigException: Packet for query is too large (3158064）问题]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/13623079</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/13623079</guid><author>fly0744</author><pubDate>Wed, 30 Oct 2013 10:50:35 +0800</pubDate><description><![CDATA[在做查询数据库操作时，报了以上错误，还有out of memery heap hacp ,原因是mysql的max_allowed_packet设置过小引起的，我一开始设置的是1M，后来改为了20M



mysql根据配置文件会限制server接受的数据包大小。

有时候大的插入和更新会被max_allowed_packet 参数限制掉，导致失败。
查看目前配置
show VARIABLES ...]]></description><category></category></item><item><title><![CDATA[eclipse中的项目用tomcat部署时名称的改变修改哪里]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/12621977</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/12621977</guid><author>fly0744</author><pubDate>Fri, 11 Oct 2013 18:33:42 +0800</pubDate><description><![CDATA[修改：D:\Java\workspace\kdms\.settings目录下的这个文件：org.eclipse.wst.common.component。






        



其中的即为项目名称]]></description><category></category></item><item><title><![CDATA[mysql查询上月用电量时时间戳的选择]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/12052847</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/12052847</guid><author>fly0744</author><pubDate>Thu, 26 Sep 2013 15:27:34 +0800</pubDate><description><![CDATA[上个月的第一天： 
select date_sub(date_sub(date_format(now(),'%y-%m-%d'),interval extract(  
   day from now())-1 day),interval 1 month)
上个月的最后一天：
select date_sub(date_sub(date_format(now(),'%y-%m-%d'),in]]></description><category></category></item><item><title><![CDATA[操作日志中，用一个方法比较不同类前后的变化]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/11568719</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/11568719</guid><author>fly0744</author><pubDate>Wed, 11 Sep 2013 16:01:54 +0800</pubDate><description><![CDATA[最近项目中加操作日志的时候，对于不同的类，如果一个一个去比较，显得麻烦，故而想到写个方法，一次比较类前后变化的值。代码如下，此方法用于遍历类中的方法和值。
public String compared(BaseModel model1,BaseModel model2) throws Exception{
StringBuffer sbf = new StringBuffer();
Syst]]></description><category></category></item><item><title><![CDATA[解决2013-09-04 11:49:40,208 ERROR org.springframework.web.context.ContextLoader - Context initializati]]></title><link>https://blog.youkuaiyun.com/fly0744/article/details/11519545</link><guid>https://blog.youkuaiyun.com/fly0744/article/details/11519545</guid><author>fly0744</author><pubDate>Tue, 10 Sep 2013 10:59:12 +0800</pubDate><description><![CDATA[先上错误：之前的代码都是没问题的，在更新过svn后突然报如下错误，各种百度，现已解决，和圆圆们分享下：
2013-09-04 11:49:40,208 ERROR org.springframework.web.context.ContextLoader - Context initialization failed
java.lang.NullPointerException

at c]]></description><category></category></item></channel></rss>