<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[u012804909的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/u012804909</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; u012804909]]></copyright><item><title><![CDATA[tomcat包与tomcat插件冲突]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/88061581</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/88061581</guid><author>u012804909</author><pubDate>Fri, 01 Mar 2019 16:07:15 +0800</pubDate><description><![CDATA[报错：
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[/mvnDemo2]]
	at java.util...]]></description><category></category></item><item><title><![CDATA[一个接口有多个实现类的调用方式]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/87912073</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/87912073</guid><author>u012804909</author><pubDate>Mon, 25 Feb 2019 10:27:21 +0800</pubDate><description><![CDATA[场景：
A用户调用Aservice实现类，B用户调用Bservice实现类
1、使用switch-case
public static Person printPerson(int kind) {
  Person p = null;
    switch (kind) {
        case FIRST: p = new A(&amp;quot;人1&amp;quot;);break;
        case SECOND...]]></description><category></category></item><item><title><![CDATA[mybatis 打印SQL语句]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/87873359</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/87873359</guid><author>u012804909</author><pubDate>Fri, 22 Feb 2019 10:55:18 +0800</pubDate><description><![CDATA[按照mybatics官网上来说，打印sql有两种办法。
方法一：在mybatis-config.xml中配置加一个setting
&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&amp;gt;
&amp;lt;!DOCTYPE configuration
        PUBLIC &quot;-//mybatis.org//DTD Config 3.0//EN&quot;
        &quot;ht...]]></description><category></category></item><item><title><![CDATA[启动eclipse时maven插件报错，并且不能编译了。]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86636224</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86636224</guid><author>u012804909</author><pubDate>Fri, 25 Jan 2019 09:28:47 +0800</pubDate><description><![CDATA[启动eclipse时maven插件报错，并且不能编译了。
错误信息：
Errors occurred during the build.
Error instantiating builder ‘org.eclipse.m2e.core.maven2Builder’.
Plug-in org.eclipse.m2e.core was unable to load class org.eclipse...]]></description><category></category></item><item><title><![CDATA[eclipse远程调试]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86623660</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86623660</guid><author>u012804909</author><pubDate>Thu, 24 Jan 2019 11:33:32 +0800</pubDate><description><![CDATA[之前一直想跑eclipse远程，但苦于一直找不到地方，终于厚着脸皮找同事一步步问下来，也终于可以远程调试了。


因为远程环境是在weblogic上部署的，所以之后还要看看doman下的setDomainEnv.cmd中用的debug端口号，我本地是如下位置。
E:\weblogic\bea\user_projects\domains\7003_domain\bin\setDomainEnv.cm...]]></description><category></category></item><item><title><![CDATA[使用bootstrap-fileinput的问题：上传时upload.parseRequest(request)得到的List为]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86622176</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86622176</guid><author>u012804909</author><pubDate>Thu, 24 Jan 2019 10:38:29 +0800</pubDate><description><![CDATA[转载自：
https://blog.youkuaiyun.com/hsj1213522415/article/details/65448717?utm_source=blogxgwz7
最近在做一个项目时，使用bootstrap-fileinput上传文件时遇到一个问题：
DiskFileItemFactory factory = new DiskFileItemFactory();  
ServletFil...]]></description><category></category></item><item><title><![CDATA[JavaWeb: 报错信息The superclass "javax.servlet.http.HttpServlet" was]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86622002</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86622002</guid><author>u012804909</author><pubDate>Thu, 24 Jan 2019 10:32:49 +0800</pubDate><description><![CDATA[转载自：https://blog.youkuaiyun.com/fei20072050104/article/details/21785565
好久不写Jsp，今天建立了一个Javaweb工程，并在eclipse中配置了Web容器Tomcat。原本新建jsp页面，添加一个简单的Java类。可是，JSP页面顶端出现“红色”的报错信息：The superclass “javax.servlet.http.Http...]]></description><category></category></item><item><title><![CDATA[使用plsqldev调试生产库程序，测试窗口DEBUG，一旦点击‘启动调试器F9’，就会光标无限等待，状态栏显示‘正在执行..]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86621867</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86621867</guid><author>u012804909</author><pubDate>Thu, 24 Jan 2019 10:31:07 +0800</pubDate><description><![CDATA[遇到问题现象：
使用plsqldev调试生产库程序，测试窗口DEBUG，一旦点击‘启动调试器F9’，就会光标无限等待，状态栏显示‘正在执行…’
这个时候只有强制退出，反复重复，有的时候可以进去。
参考了网上一篇文章
http://www.cnblogs.com/Cqiang/archive/2012/11/02/2751401.html
使用如下代码重新赋予用户权限可以解决：
–赋予Debug权限...]]></description><category></category></item><item><title><![CDATA[ie下未按F12时页面显示有问题，但按了F12后页面显示没有问题。]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86613154</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86613154</guid><author>u012804909</author><pubDate>Wed, 23 Jan 2019 16:45:22 +0800</pubDate><description><![CDATA[转载自：https://blog.youkuaiyun.com/zhuchunyan_aijia/article/details/51840959
console =console  ||  (function () {
    var v={};
    v.log = function () {
    };
    return v;
})();

console.log(&quot;111&quot;);

判断cons...]]></description><category></category></item><item><title><![CDATA[Uploadify在IE下的兼容问题解决]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86612547</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86612547</guid><author>u012804909</author><pubDate>Wed, 23 Jan 2019 16:38:43 +0800</pubDate><description><![CDATA[转载自：https://blog.youkuaiyun.com/phy201106/article/details/71774598
一、在IE9、IE10不能点击的问题解决
解决方法：进入uploadify的js文件中，搜索SWFUpload.prototype.getFlashHTML，找到它对应的语句，将方法全部替换为以下内容：
    SWFUpload.prototype.getFlashHTML ...]]></description><category></category></item><item><title><![CDATA[weblogic对于空字符串的处理与tomcat处理不同]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86612434</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86612434</guid><author>u012804909</author><pubDate>Wed, 23 Jan 2019 16:14:00 +0800</pubDate><description><![CDATA[

结论：weblogic对于空字符串的处理与tomcat处理不同。
weblogic 环境下 “” == “”  得到 false
tomcat环境下  “” == “”  得到 true
考虑使用.equals代替==的比较，避免兼容问题。

...]]></description><category></category></item><item><title><![CDATA[plsql使用技巧]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86612052</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86612052</guid><author>u012804909</author><pubDate>Wed, 23 Jan 2019 15:58:14 +0800</pubDate><description><![CDATA[1、类SQL PLUS窗口:File-&amp;amp;gt;New-&amp;amp;gt;Command Window，这个类似于oracle的客户端工具sql plus，但比它好用多了。
2、设置关键字自动大写:Tools-&amp;amp;gt;Preferences-&amp;amp;gt;Editor，将Keyword case选择Uppercase。这样在窗口中输入sql语句时，关键字会自动大写，而其它都是小写。这样阅读代码比较容易，且保持良好得...]]></description><category></category></item><item><title><![CDATA[plsql64位的美化器位置]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86610103</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86610103</guid><author>u012804909</author><pubDate>Wed, 23 Jan 2019 15:06:25 +0800</pubDate><description><![CDATA[用过两三年的plsql32位，一直会有32位plsql连接64位oracle连接不上的问题，例如（随手找的）：https://blog.youkuaiyun.com/li_wen_jin/article/details/79741424，网上各种搜索也总是无法彻底解决。直到系统重装，突然发现有了64位的plsql。神呐，终于解脱了，帮别人装plsql终于不需要一问三不知，显得自己很low了。
为保持代码的优雅...]]></description><category></category></item><item><title><![CDATA[org.apache.maven.archiver.mavenarchiver.getmanifest怎么解决]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86608793</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86608793</guid><author>u012804909</author><pubDate>Wed, 23 Jan 2019 13:48:13 +0800</pubDate><description><![CDATA[原因就是你的maven的配置文件不是最新的
1.help -&amp;gt;Install New Software -&amp;gt; add -&amp;gt;https://otto.takari.io/content/sites/m2e.extras/m2eclipse-mavenarchiver/0.17.2/N/LATEST
或者（更新于2018年4月18日17:07:53）
http://repo1.mav...]]></description><category></category></item><item><title><![CDATA[linux 中更改用户权限和用户组的命令chmod,chgrp实例]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86166032</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86166032</guid><author>u012804909</author><pubDate>Wed, 09 Jan 2019 17:37:05 +0800</pubDate><description><![CDATA[转载自：
https://www.cnblogs.com/zdz8207/p/3793246.html
linux 中更改用户权限和用户组的命令chmod,chgrp实例
linux 中更改用户权限和用户组的命令实例;
增加权限给当前用户 chmod +wx filename
chmod -R 777 /upload
用户组 chgrp -R foldname zdz
chown -R  所有者用...]]></description><category></category></item><item><title><![CDATA[解决 CentOS7 安装完成后ifconfig命令不能用]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86156620</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86156620</guid><author>u012804909</author><pubDate>Wed, 09 Jan 2019 15:50:41 +0800</pubDate><description><![CDATA[转载自：   https://www.cnblogs.com/valu/p/6693725.html
今天用VMWare安装了CentOS7，选择了最小安装包模式，安装完毕之后想查看一下本机的ip地址，发现无法使用ifconfig命令，报错如下：
-bash: ifconfig: command not found
解决思路:

查看ifconfig命令是否存在 
查看 /sbin/ifconfi...]]></description><category></category></item><item><title><![CDATA[jdk源码剖析一：OpenJDK-Hotspot源码包目录结构]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/86096214</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/86096214</guid><author>u012804909</author><pubDate>Tue, 08 Jan 2019 20:19:48 +0800</pubDate><description><![CDATA[转载自：https://www.cnblogs.com/dennyzhangdd/p/6734933.html
开启正文之前，先说一下源码剖析这一系列，就以“死磕到底”的精神贯彻始终，JDK–》JRE–》JVM（以openJDK代替）
最近想看看JDK8源码，但JDK中JVM（安装在本地C:\Program Files\Java\jdk1.8.0_121\jre\bin\server下jvm.dl...]]></description><category></category></item><item><title><![CDATA[org.springframework.web.HttpRequestMethodNotSupportedException]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/85091320</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/85091320</guid><author>u012804909</author><pubDate>Wed, 19 Dec 2018 11:09:30 +0800</pubDate><description><![CDATA[org.springframework.web.HttpRequestMethodNotSupportedException
在推送数据到接口时，得到了返回信息如下：
{&quot;timestamp&quot;:1545187124252,&quot;status&quot;:405,&quot;error&quot;:&quot;Method Not Allowed&quot;
,&quot;exception&quot;:&quot;org.springframework.web.HttpReque.]]></description><category></category></item><item><title><![CDATA[写存储过程中遇到的问题（一）—— else if和elsif]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/84992381</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/84992381</guid><author>u012804909</author><pubDate>Thu, 13 Dec 2018 17:41:28 +0800</pubDate><description><![CDATA[编译时报错，然后发现里面有这么一段代码：
set define off;
declare
  v_nullable varchar(1) := '';
begin

if fc_IsTableExists('TCAPCURRENTS_INPUT') then
if not fc_IsColExists('TCAPCURRENTS_INPUT', 'L_CONTRACTSERIALNO') then...]]></description><category></category></item><item><title><![CDATA[idea在maven上的使用技巧]]></title><link>https://blog.youkuaiyun.com/u012804909/article/details/84991214</link><guid>https://blog.youkuaiyun.com/u012804909/article/details/84991214</guid><author>u012804909</author><pubDate>Thu, 13 Dec 2018 16:49:33 +0800</pubDate><description><![CDATA[
在使用一些包时，有时我们会不知道自己现在使用的包是在哪里被引入的，idea为我们提供了该功能。

在pom文件中右键=&amp;gt;Maven=&amp;gt;Show Dependencies,会将包的依赖关系展示的清清楚楚，很强大有没有。


...]]></description><category></category></item></channel></rss>