<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[yjjy0921的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/yjjy0921</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; yjjy0921]]></copyright><item><title><![CDATA[在Linux上通过Python引用动态链接库]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/87007385</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/87007385</guid><author>yjjy0921</author><pubDate>Mon, 11 Feb 2019 17:12:40 +0800</pubDate><description><![CDATA[在Linux上通过Python引用动态链接库
测试环境

centos 6/7
gcc 4.8.5
python 2.7

编译动态链接库
示例程序
app.c  app.h  foo.py main.c

头文件定义 app.h
int add(int a, int b);
int mul(int a, int b);

函数实现 app.c
int add(int a, int b){
 re...]]></description><category></category></item><item><title><![CDATA[CMake 中的list操作]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/50378567</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/50378567</guid><author>yjjy0921</author><pubDate>Tue, 22 Dec 2015 13:44:42 +0800</pubDate><description><![CDATA[运用cmake编译代码，灵活使用cmake定义的函数来处理编译过程]]></description><category></category></item><item><title><![CDATA[Spring Boot 单元测试]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/49889179</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/49889179</guid><author>yjjy0921</author><pubDate>Tue, 17 Nov 2015 16:44:47 +0800</pubDate><description><![CDATA[Spring boot单元测试]]></description><category></category></item><item><title><![CDATA[python format 大全]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/46378381</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/46378381</guid><author>yjjy0921</author><pubDate>Wed, 05 Aug 2015 16:54:32 +0800</pubDate><description><![CDATA[在学习Python的过程中见识了各种各样的对字符串的format的方式，各有优劣，这里总结一下。


%s %d %f 等占位符，这种方式和C中的编程习惯一致，较为常用


name = "John"
print "Hi %s" % name
f = 0.1
print "float %f" % f
int = 0.1
print "integer %d" % int

输出



Hi John]]></description><category></category></item><item><title><![CDATA[Can't do setuid (cannot exec sperl)]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/45640811</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/45640811</guid><author>yjjy0921</author><pubDate>Mon, 11 May 2015 09:57:50 +0800</pubDate><description><![CDATA[本人在测试svn hook的时候遇到了下面的错误，网上查资料认为是没有执行perl脚本的权限。
$ svn commit -m "commit msg"
Adding         wcao\commit_msg.txt
Transmitting file data .svn: E165001: Commit failed (details follow):
svn: E165001: ]]></description><category></category></item><item><title><![CDATA[Android Context 和 ApplicationContext 详解]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/42421351</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/42421351</guid><author>yjjy0921</author><pubDate>Mon, 05 Jan 2015 13:29:02 +0800</pubDate><description><![CDATA[本文出自：【张鸿洋的博客】


1、Context概念


其实一直想写一篇关于Context的文章，但是又怕技术不如而误人子弟，于是参考了些资料，今天准备整理下写出来，如有不足，请指出，参考资料会在醒目地方标明。

Context，相信不管是第一天开发Android，还是开发Android的各种老鸟，对于Context的使用一定不陌生~~你在加载资源、启动一个新的Activity]]></description><category></category></item><item><title><![CDATA[数据库查询分页]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/42100843</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/42100843</guid><author>yjjy0921</author><pubDate>Tue, 23 Dec 2014 11:49:55 +0800</pubDate><description><![CDATA[刚刚接触数据库条目分页这个概念时让我有点迷茫。如何实现呢？
后来仔细考虑了下，查询分页不外乎是这样一个问题：
ResultSet rs = pstmt.executQuery("select * from t_user order by id");
此时已经获取了我要分页的数据集（rs）。假如当前每页显示5条，那么第一页我需要做的事情是：
ResultSet rs = pstmt.exec]]></description><category></category></item><item><title><![CDATA[Spring中scope singleton 和 prototype详解]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/41979825</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/41979825</guid><author>yjjy0921</author><pubDate>Wed, 17 Dec 2014 11:51:37 +0800</pubDate><description><![CDATA[Singleton




The singleton scope




Only one shared instance of a singleton bean is managed, and all requests for beans with an id or ids matching that bean definition result in that one s]]></description><category></category></item><item><title><![CDATA[无法获取 java Console 对象]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/41959047</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/41959047</guid><author>yjjy0921</author><pubDate>Tue, 16 Dec 2014 13:27:32 +0800</pubDate><description><![CDATA[在eclipse环境中调用System.console()获取Console对象，打印返回对象为空，反复试验都是相同结果。




Console con = System.console();
  if(con != null)
   System.out.println("##console:"+con);
  else
   System.out.println("##consol]]></description><category></category></item><item><title><![CDATA[Linux 中搭建Raid]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/39890549</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/39890549</guid><author>yjjy0921</author><pubDate>Wed, 08 Oct 2014 10:32:27 +0800</pubDate><description><![CDATA[本文介绍如何在centos 6.5中用8个SSD创建一个Raid。]]></description><category></category></item><item><title><![CDATA[sudo su "Cannot execute bash: No such file or directory"]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/39642959</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/39642959</guid><author>yjjy0921</author><pubDate>Sun, 28 Sep 2014 16:09:37 +0800</pubDate><description><![CDATA[本人Ubuntu 12.0 LTS，今天更新了下bash]]></description><category></category></item><item><title><![CDATA[Cannot run program “protoc” Hadoop 3.0 编译错误]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/38847327</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/38847327</guid><author>yjjy0921</author><pubDate>Tue, 26 Aug 2014 14:39:29 +0800</pubDate><description><![CDATA[hadoop 3.0 编译错误]]></description><category></category></item><item><title><![CDATA[tachyon 安装配置]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/38731307</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/38731307</guid><author>yjjy0921</author><pubDate>Thu, 21 Aug 2014 15:58:29 +0800</pubDate><description><![CDATA[tachyon
Tachyon是AmpLab的Li
 Haoyuan所开发的一个基于内存的分布式文件系统，出发点是作为AMPLAB的BDAS的一个组成部分。其生成]]></description><category></category></item><item><title><![CDATA[at org.codehaus.plexus.archiver.AbstractArchiver$1.hasNext(AbstractArchiver.java:481)]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/38702785</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/38702785</guid><author>yjjy0921</author><pubDate>Wed, 20 Aug 2014 10:37:14 +0800</pubDate><description><![CDATA[在执行mvn package 的过程中产生了]]></description><category></category></item><item><title><![CDATA[SQLite only supports TYPE_FORWARD_ONLY 不支持游标移动的问题]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/38436563</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/38436563</guid><author>yjjy0921</author><pubDate>Fri, 08 Aug 2014 11:13:05 +0800</pubDate><description><![CDATA[为了检验username在数据库中是否存在，写了下面的代码：
stmt=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=stmt.executeQuery("select * from table");
rs.last()]]></description><category></category></item><item><title><![CDATA[myEclipse中拷贝J2EE项目，发布到tomcat中名字不一样的解决办法]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/84416701</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/84416701</guid><author>yjjy0921</author><pubDate>Mon, 08 Apr 2013 19:03:58 +0800</pubDate><description><![CDATA[
选择项目,右键 Properties-&amp;gt;MyEclipse-&amp;gt;Web-&amp;gt;Web context-root
 
]]></description><category></category></item><item><title><![CDATA[Map的排序问题]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/84416497</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/84416497</guid><author>yjjy0921</author><pubDate>Mon, 08 Apr 2013 11:47:27 +0800</pubDate><description><![CDATA[
import java.util.HashMap;  
import java.util.LinkedHashMap;  
import java.util.Map;  
import java.util.TreeMap;  
  
public class Test {  
public static void main(String[] args) {  
    Map tr...]]></description><category></category></item><item><title><![CDATA[Map的遍历]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/84415865</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/84415865</guid><author>yjjy0921</author><pubDate>Sat, 06 Apr 2013 15:08:21 +0800</pubDate><description><![CDATA[
//最常规的一种遍历方法，最常规就是最常用的，虽然不复杂，但很重要，这是我们最熟悉的，就不多说了！！
    public static void work(Map&amp;lt;String, Student&amp;gt; map) {
        Collection&amp;lt;Student&amp;gt; c = map.values();
        Iterator it = c.iterato...]]></description><category></category></item><item><title><![CDATA[Request的getParameter和getAttribute方法的区别]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/84415432</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/84415432</guid><author>yjjy0921</author><pubDate>Thu, 04 Apr 2013 11:34:42 +0800</pubDate><description><![CDATA[

Request的getParameter和getAttribute方法的区别

HttpServletRequest.getParameter(&quot;modelName&quot;); 能取到想要的modelObject吗？经过测试之后，发现是不能的。后来想想，其他道理挺简单的，当两个Web组件之间为转发关系时，转发源会将要共享 request范围内的数据先用setAttribute将数据放入到Htt...]]></description><category></category></item><item><title><![CDATA[项目总结]]></title><link>https://blog.youkuaiyun.com/yjjy0921/article/details/84414284</link><guid>https://blog.youkuaiyun.com/yjjy0921/article/details/84414284</guid><author>yjjy0921</author><pubDate>Mon, 01 Apr 2013 09:09:26 +0800</pubDate><description><![CDATA[
           晚上终于完成了持续两天的网页制作。这次的作品是一个动漫网站，先贴图，个人感觉效果还不错。
   
 
 
项目过程中遇到了一些问题，现在列举出来：
1、ie6兼容性问题，网站使用了easyui的一些插件，在ie6下布局面目全非。
2、&amp;lt;span&amp;gt;是内联元素。很多时候误以为span是块状元素，其实不是。
3、关于网页中img标签，一定要设定高跟宽。...]]></description><category></category></item></channel></rss>