<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[一日三省]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/lvyanfen6</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; lvyanfen6]]></copyright><item><title><![CDATA[axure画原型画原型]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/145855400</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/145855400</guid><author>lvyanfen6</author><pubDate>Tue, 25 Feb 2025 16:33:40 +0800</pubDate><description><![CDATA[23423。]]></description><category></category></item><item><title><![CDATA[com.alibaba.fastjson.JSONArray循环引用导致{“$ref“:“$[0]“}]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/85474397</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/85474397</guid><author>lvyanfen6</author><pubDate>Wed, 04 Sep 2024 10:03:47 +0800</pubDate><description><![CDATA[在for循环中将对象add到.JSONArray中，arr.toJSONString()，输出的结果如下：

[{&quot;sex&quot;:&quot;男&quot;,&quot;age&quot;:&quot;10&quot;,&quot;name&quot;:&quot;张三&quot;},{&quot;$ref&quot;:&quot;$[0]&quot;},{&quot;$ref&quot;:&quot;$[0]&quot;}]

最终发现这是个JSONArray的问题；

验证逻辑：

在]]></description><category></category></item><item><title><![CDATA[win11 修改hosts提示无权限]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/138220793</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/138220793</guid><author>lvyanfen6</author><pubDate>Fri, 26 Apr 2024 15:46:04 +0800</pubDate><description><![CDATA[修改host文件]]></description><category></category></item><item><title><![CDATA[myeclipse 启动后闪退]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/90291701</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/90291701</guid><author>lvyanfen6</author><pubDate>Fri, 17 May 2019 13:48:18 +0800</pubDate><description><![CDATA[解决办法：修改myeclipse.ini ，在vmargs参数后面追加

-Dorg.eclipse.swt.browser.XULRunnerPath=/usr/lib/xulrunner

思路：

在myclipse工作空间 。metadata文件夹下找到日志.log；

日志文件显示：



!MESSAGE NLS missing message: Obsolete_attribu...]]></description><category></category></item><item><title><![CDATA[Could not initialize class net.sf.log4jdbc.sql.jdbcapi.DriverSpy]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/79471101</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/79471101</guid><author>lvyanfen6</author><pubDate>Wed, 07 Mar 2018 14:51:36 +0800</pubDate><description><![CDATA[Exception in thread &quot;Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@39117085&quot; java.lang.NoClassDefFoundError: Could not initialize class net.sf.log4jdbc.sql.jdbcapi.DriverSpy	at ...]]></description><category></category></item><item><title><![CDATA[java值传递，引用传递]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/55049292</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/55049292</guid><author>lvyanfen6</author><pubDate>Mon, 13 Feb 2017 15:11:57 +0800</pubDate><description><![CDATA[/* 
 * java值传递，引用传递学习 
 *  
 * 个人简单理解：值传传递的是变量的值，后续操作与该变量无关； 
 *              引用传递传递的是对象的地址，后续操作改变的是地址空间对应的内容，所有指向该地址的对象会同时被修改 
 * 
 * 2017-2-13 下午02:25:02 
 */]]></description><category></category></item><item><title><![CDATA[net.sf.json.JSONException: Unquotted string "E44C2B0168A550F6503F59CCD56FC49B"]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51491694</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51491694</guid><author>lvyanfen6</author><pubDate>Tue, 24 May 2016 16:58:22 +0800</pubDate><description><![CDATA[很明显看到是json解析的错误，后面的E44C2B0168A550F6503F59CCD56FC49B是我的数据Id。
检查当前页面所用的后台代码没有json数据转换后 又确认页面参数传递，发现传递参数时我的参数param 在传这个ID的时候没有用引号，
后来加了单引号但是还是报错，又改成双引号问题得以解决。]]></description><category></category></item><item><title><![CDATA[errors running builder "Integerate External Tool Builder "]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51423292</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51423292</guid><author>lvyanfen6</author><pubDate>Mon, 16 May 2016 10:51:17 +0800</pubDate><description><![CDATA[周一来上班部署项目的时候报错！

errors running builder "Integerate External Tool Builder " 





解决办法 项目右键-->properties-->builder：

如下图，可以看到几个Invalid External Tool Builder,把他们remove掉重新部署即可]]></description><category></category></item><item><title><![CDATA[Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.Generi]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51323512</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51323512</guid><author>lvyanfen6</author><pubDate>Thu, 05 May 2016 15:42:18 +0800</pubDate><description><![CDATA[spring hiberate项目启动没有报错，访问服务时突然报错500：Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Cannot open connection


我的问题是数据库配置信息有误，数据库i]]></description><category></category></item><item><title><![CDATA[Parse error in application web.xml file at jndi:/localhost/sdyth/WEB-INF/web.xml org.xml.sax.SAXPar]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51189428</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51189428</guid><author>lvyanfen6</author><pubDate>Tue, 19 Apr 2016 12:59:19 +0800</pubDate><description><![CDATA[Parse error in application web.xml file at jndi:/localhost/sdyth/WEB-INF/web.xml
org.xml.sax.SAXParseException: The element type "web-app" must be terminated by the matching end-tag "".




这种情况]]></description><category></category></item><item><title><![CDATA[Access restriction: The type ‘BASE64Encoder‘ is not API (restriction on required library ‘D:\Java\jd]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51121586</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51121586</guid><author>lvyanfen6</author><pubDate>Mon, 11 Apr 2016 15:27:32 +0800</pubDate><description><![CDATA[Access restriction: The type 'BASE64Encoder' is not API (restriction on required library 'D:\Java\jdk1.6.0_43\jre\lib\rt.jar')

import后仍然是报错！]]></description><category></category></item><item><title><![CDATA[xml转document问题]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51121522</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51121522</guid><author>lvyanfen6</author><pubDate>Mon, 11 Apr 2016 14:38:05 +0800</pubDate><description><![CDATA[1.The markup in the document following the root element must be well-formed，
如： 
String xmlString = ""

我的问题是组装的xml ,组节点后面没有加\n（回车）
改成：String xmlString = "\n"



2.White space is required bet]]></description><category></category></item><item><title><![CDATA[Unable to locate appropriate constructor on class]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51075231</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51075231</guid><author>lvyanfen6</author><pubDate>Wed, 06 Apr 2016 15:25:41 +0800</pubDate><description><![CDATA[通常我们喜欢将hql查询结果封装到POJO对象
 syntax:
 select new POJO(id,name) from POJO ;

Unable to locate appropriate constructor on class 
 这种封装需要POJO类提供对应构造器，POJO(id,name)构造方法。

 

 但使用中经常会抛这样的异常：Unable to ]]></description><category></category></item><item><title><![CDATA[Java compiler level does not match]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51018435</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51018435</guid><author>lvyanfen6</author><pubDate>Wed, 30 Mar 2016 19:25:03 +0800</pubDate><description><![CDATA[从别的地方导入一个项目的时候,经常会遇到eclipse/Myeclipse报Description 
 Resource Path Location Type Java compiler level does not match the version of the installed Java project facet.出现这个问题的原因是因为,eclipse/myeclipse的jdk编译]]></description><category></category></item><item><title><![CDATA[myeclipse tomcat 部署项目不能点击finish]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/51015506</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/51015506</guid><author>lvyanfen6</author><pubDate>Wed, 30 Mar 2016 15:45:21 +0800</pubDate><description><![CDATA[原因是项目丢失了配置
解决办法：右键项目--->properties,在Myeclipse--->web目录中修改如下图中内容]]></description><category></category></item><item><title><![CDATA[js 学习，document.getElementsByTagName]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/45016247</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/45016247</guid><author>lvyanfen6</author><pubDate>Sun, 12 Apr 2015 23:55:27 +0800</pubDate><description><![CDATA[比较以下两个方法的区别，js是解释性语言，而document.getElementsByTagName也是动态的获取目标的长度，方法一是一个死循环，如果获取对象的方法换成方法二中的方式，就不会出现死循环了。。。。
方法一：
var append = document.getElementById("append");
     append.addEventListener("click" ]]></description><category></category></item><item><title><![CDATA[数据库表添加非主键，自增int型字段]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/44921441</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/44921441</guid><author>lvyanfen6</author><pubDate>Tue, 07 Apr 2015 16:04:05 +0800</pubDate><description><![CDATA[背景：我们的项目中的主键配置如下：

            
            
 

但是在与某外部程序接口对接的时候发现它需要int类型的唯一标识，故我们的现有数据结构不能满足接口需求。
解决办法：
在不改变我们自己程序的前提下，我们希望添加一个int型的自增字段，
sql 如下：
alter    table     tableName    add    字段名]]></description><category></category></item><item><title><![CDATA[jdk环境变量配置，配置了仍然javac 不是内部变量~]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/42524841</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/42524841</guid><author>lvyanfen6</author><pubDate>Thu, 08 Jan 2015 14:47:30 +0800</pubDate><description><![CDATA[jdk环境变量配置，配置了仍然javac 不是内部变量~
解决办法

运行——>cmd 
在控制台中运行以下命令设置java环境变量即可解决：
set java_home=C:\Program Files\Java\jdk1.6.0_26 
  安装JDK的根目录
set classpath=%JAVA_HOME%\lib\tools.jar;%JAVA_HOME%\lib\dt.j]]></description><category></category></item><item><title><![CDATA[AJAX方法中提交请求，target="_blank" 不能正确打开新的浏览器窗口]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/40427183</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/40427183</guid><author>lvyanfen6</author><pubDate>Fri, 24 Oct 2014 14:38:06 +0800</pubDate><description><![CDATA[问题描述：methodA 方法执行完毕，但是我们发现myForm的target="_blank" 并没有打开一个新的浏览器窗口，而是以openWin的方式打开了一个窗口展示，这是为什么呢？
function methodA(subjectId,courseWardId,courseId,stype){
 var tab=0;
 $.ajax({
  url:"***********",
]]></description><category></category></item><item><title><![CDATA[关于hosts文件]]></title><link>https://blog.youkuaiyun.com/lvyanfen6/article/details/40426917</link><guid>https://blog.youkuaiyun.com/lvyanfen6/article/details/40426917</guid><author>lvyanfen6</author><pubDate>Fri, 24 Oct 2014 14:21:55 +0800</pubDate><description><![CDATA[在XP 、win7系统中，HOST文件位于系统盘C:\Windows\System32\drivers\etc中，如果进去没有看到Hos文件，是因为某些系统将Host文件隐藏了


1.Hosts是一个没有扩展名的系统文件，其作用就是将一些常用的网址域名与其对应的IP地址建立一个关联“数据库”。


2.

Hosts文件的工作方式

在网络上访问网站，要首先通过DNS服务器把]]></description><category></category></item></channel></rss>