<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[for ever的log——永远的足迹]]></title><description><![CDATA[梦想有多远，就要走多远]]></description><link>https://blog.youkuaiyun.com/forandever</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; forandever]]></copyright><item><title><![CDATA[Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable解决方法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/78764130</link><guid>https://blog.youkuaiyun.com/forandever/article/details/78764130</guid><author>forandever</author><pubDate>Sun, 10 Dec 2017 12:27:47 +0800</pubDate><description><![CDATA[linux上在画图和chart报错：Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.




解决：

在.bash_profile 及 /etc/profile 加了个export JAVA_OPTS=-Djava.awt.headless=true

so]]></description><category></category></item><item><title><![CDATA[用JS获取元素某一事件上绑定的所有Listener]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/78591889</link><guid>https://blog.youkuaiyun.com/forandever/article/details/78591889</guid><author>forandever</author><pubDate>Tue, 21 Nov 2017 14:01:11 +0800</pubDate><description><![CDATA[使用Chrome浏览器，在开发者工具里面查看。
步骤是：
Chrome DevTools->console->getEventListeners(document.querySelector('.someclass'));]]></description><category></category></item><item><title><![CDATA[mysql启动脚本——指定数据目录并指定配置文件]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/78580057</link><guid>https://blog.youkuaiyun.com/forandever/article/details/78580057</guid><author>forandever</author><pubDate>Mon, 20 Nov 2017 10:48:07 +0800</pubDate><description><![CDATA[启动
/usr/local/mysql/bin/mysqld_safe --defaults-extra-file=/etc/my3306.cnf --datadir=/mysql3306 --user=mysql &


关闭
/usr/local/mysql/bin/mysqladmin -uroot -S /tmp/mysql3306.sock shutdown -p]]></description><category></category></item><item><title><![CDATA[MAC 安装遇到的问题及解决办法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/56670528</link><guid>https://blog.youkuaiyun.com/forandever/article/details/56670528</guid><author>forandever</author><pubDate>Thu, 23 Feb 2017 13:56:03 +0800</pubDate><description><![CDATA[正在安装“ MacPorts ”。 中断安装可能会损坏电脑。您可以在安装完成后重新启动


一天一夜了，还没结束，通过强制关闭也不起作用，关机也不行，重启也不行。怎么办？


解决办法：
ps auwx | grep macports

找到那个安装进行，kill -9 进程号 即可。]]></description><category></category></item><item><title><![CDATA[glDrawArrays 和 glDrawElements 区别？]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/54586089</link><guid>https://blog.youkuaiyun.com/forandever/article/details/54586089</guid><author>forandever</author><pubDate>Tue, 17 Jan 2017 19:49:22 +0800</pubDate><description><![CDATA[比如画一个由2个3角形组成的正方形，左上角坐标是l,t,右下角坐标是r,b



使用glDrawArrays绘制时，画2个三角形，需要这样传： 
(l,t),(r,t),(l,b)
(r,t),(r,b),(l,b)

而用glDrawElements画的话可以这样
float coord[4][2]={{l,t},{r,t},{r,b},{l,b}};

绘制时：
0,]]></description><category></category></item><item><title><![CDATA[【Android应用开发】 OpenGL ES -- 透视投影 和 正交投影]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/54585625</link><guid>https://blog.youkuaiyun.com/forandever/article/details/54585625</guid><author>forandever</author><pubDate>Tue, 17 Jan 2017 18:30:25 +0800</pubDate><description><![CDATA[http://blog.youkuaiyun.com/shulianghan/article/details/46680803





博客地址 : http://blog.youkuaiyun.com/shulianghan/article/details/46680803

源码下载 : http://download.youkuaiyun.com/detail/han1202012/8903437]]></description><category></category></item><item><title><![CDATA[使用AV Foundation框架来实现实时滤镜]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/54233471</link><guid>https://blog.youkuaiyun.com/forandever/article/details/54233471</guid><author>forandever</author><pubDate>Sun, 08 Jan 2017 13:27:49 +0800</pubDate><description><![CDATA[使用AV Foundation框架来实现实时滤镜


     UIImagePickerController处理的并不是原始摄像头数据，他是在原始数据被处理成图像后才开始访问。而AV Foundation能在原始数据变成图像之前就直接访问它，这就使得我们能够执行一些额外的暗箱操作，来实现实时滤镜的制作。


     AVCaptureSession用来控制输入设备(AVCaptur]]></description><category></category></item><item><title><![CDATA[安卓jni编程--错误：无法访问android.app.Activity 找不到android.app.Activity的类文件的解决办法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/50396130</link><guid>https://blog.youkuaiyun.com/forandever/article/details/50396130</guid><author>forandever</author><pubDate>Thu, 24 Dec 2015 18:15:11 +0800</pubDate><description><![CDATA[通过java代码文件编译后的class文件生成对应的jni文件，

执行命令
javah -classpath bin/classes -d jni com.xxx.aaa.BBActivity
出现错误如下：
 无法访问android.app.Activity 找不到android.app.Activity的类文件


 
解决：
java文件不用编译也可生成jni文件，因此]]></description><category></category></item><item><title><![CDATA[安卓JNI编程-- :error: base operand of '->' has non-pointer type '_JNIEnv' 解决办法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/50396058</link><guid>https://blog.youkuaiyun.com/forandever/article/details/50396058</guid><author>forandever</author><pubDate>Thu, 24 Dec 2015 18:06:28 +0800</pubDate><description><![CDATA[1、使用c++来写代码，文件名就必须【cpp】后缀：

 C++ code must have .cpp extension.，必须cpp后缀，c后缀不行；

2、使用c来写代码，文件名就必须【c】后缀；




2》调用的代码这么来写：


//用C语言格式

return (*env)->NewStringUTF(env, "Hello JNI !");


]]></description><category></category></item><item><title><![CDATA[JNI编程-- undefined reference to `__android_log_print' 的解决办法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/50393499</link><guid>https://blog.youkuaiyun.com/forandever/article/details/50393499</guid><author>forandever</author><pubDate>Thu, 24 Dec 2015 11:54:21 +0800</pubDate><description><![CDATA[按如下步骤操作：
1、在android.mk 文件中找到
include $(CLEAR_VARS)
 这一行，

在下面增加一行：
LOCAL_LDLIBS    := -lm -llog 



2、文件头部引入：
#include 

3、宏定义
#define LOG_TAG
"Native"
#define LOGE(...) __android_log_]]></description><category></category></item><item><title><![CDATA[Mac OSX中设置路由]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/45485093</link><guid>https://blog.youkuaiyun.com/forandever/article/details/45485093</guid><author>forandever</author><pubDate>Mon, 04 May 2015 19:56:47 +0800</pubDate><description><![CDATA[在Mac OSX 中, 设置路由的命令为:
route -n add defalut  10.13.31.1
route -n add   -net 10.0.0.0/8  10.13.31.1
route -n add -net 210.32.0.0/20   10.13.31.1
route -n add -net 222.205.0.0/17 10.13.31.1


提示路由存在时可]]></description><category></category></item><item><title><![CDATA[MongoDB中Geospatial采用geoNear查询出来之后的dis单位是什么]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/44751801</link><guid>https://blog.youkuaiyun.com/forandever/article/details/44751801</guid><author>forandever</author><pubDate>Mon, 30 Mar 2015 15:40:05 +0800</pubDate><description><![CDATA[命令  db.runCommand( { geoNear : "places" , near : [50,50], num : 10 } );
  上面的命令将返回10条距离点（50，50）最近的记录，loc字段由该collection的空间索引自动检测后决定。
     如果你想添加一条过滤条件，可以这样：
Mongo代码  
> db.runCommand( { geoNear : "]]></description><category></category></item><item><title><![CDATA[mongodb查询的语法（大于，小于，大于或等于，小于或等于等等）]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/44751407</link><guid>https://blog.youkuaiyun.com/forandever/article/details/44751407</guid><author>forandever</author><pubDate>Mon, 30 Mar 2015 15:16:05 +0800</pubDate><description><![CDATA[1 ) . 大于，小于，大于或等于，小于或等于

$gt:大于
$lt:小于
$gte:大于或等于
$lte:小于或等于

例子：

db.collection.find({ "field" : { $gt: value } } ); // greater than : field > value
db.collection.find({ "field" : { $lt: va]]></description><category></category></item><item><title><![CDATA[lucene的BooleanQuery]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/44751319</link><guid>https://blog.youkuaiyun.com/forandever/article/details/44751319</guid><author>forandever</author><pubDate>Mon, 30 Mar 2015 15:11:21 +0800</pubDate><description><![CDATA[应用BooleanQuery进行组合查询时,条件之间的关系是由类BooleanClause.Occur控制的,BooleanClause.Occur中提供了三个参数值进行控制,分别是BooleanClause.Occur.MUST 
BooleanClause.Occur.MUST_NOT 
BooleanClause.Occur.SHOULD 

它们的组合关系代表的意思如下: 
1、]]></description><category></category></item><item><title><![CDATA[Eclipse开发andriod程序时import android.support.v4或者import android.support.v7提示导入错误解决办法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/37655139</link><guid>https://blog.youkuaiyun.com/forandever/article/details/37655139</guid><author>forandever</author><pubDate>Thu, 10 Jul 2014 13:54:09 +0800</pubDate><description><![CDATA[在使用Eclipse开发andriod程序时，程序中提示import android.support.v4.XXX或者import android.support.v7.XXX提示导入错误解决办法]]></description><category></category></item><item><title><![CDATA[Mac os x如何使用Ports安装gstreamer开发环境]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/29571785</link><guid>https://blog.youkuaiyun.com/forandever/article/details/29571785</guid><author>forandever</author><pubDate>Mon, 09 Jun 2014 13:38:34 +0800</pubDate><description><![CDATA[转载，只作为ji'lu]]></description><category></category></item><item><title><![CDATA[linux查看某个端口的资源占用情况]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/27175571</link><guid>https://blog.youkuaiyun.com/forandever/article/details/27175571</guid><author>forandever</author><pubDate>Tue, 27 May 2014 10:01:05 +0800</pubDate><description><![CDATA[##根据端口查看进程信息 
lsof -i:14700 
##根据进程号查看进程对应的可执行程序 
ps -f -p 进程号 
##根据可执行程序查看，动态链接、 


ldd 可执行文件名




或者如下方法：


ps -ef |grep  程序名或端口号
netstat -nltp |grep 端口号或服务名]]></description><category></category></item><item><title><![CDATA[在mac OSX上安装OpenCV + Java环境]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/27098003</link><guid>https://blog.youkuaiyun.com/forandever/article/details/27098003</guid><author>forandever</author><pubDate>Mon, 26 May 2014 17:45:27 +0800</pubDate><description><![CDATA[之前一篇文章是通过brew的方式安装o'p]]></description><category></category></item><item><title><![CDATA[在Mac OSX上通过Homebrew安装OpenCV]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/26700517</link><guid>https://blog.youkuaiyun.com/forandever/article/details/26700517</guid><author>forandever</author><pubDate>Fri, 23 May 2014 14:20:21 +0800</pubDate><description><![CDATA[步骤很简单，如下：


1、brew tap homebrew/science
2、brew install opencv]]></description><category></category></item><item><title><![CDATA[Eclipse console控制台中文乱码问题的解决办法]]></title><link>https://blog.youkuaiyun.com/forandever/article/details/24811273</link><guid>https://blog.youkuaiyun.com/forandever/article/details/24811273</guid><author>forandever</author><pubDate>Wed, 30 Apr 2014 20:05:16 +0800</pubDate><description><![CDATA[解决办法如下：


在Eclipse里面点击 
run-->Open Run Dialog... 找到Common下面的Console Encoding 
在Other里选择你所要的编码格式(我用的是UTF-8,中文OK)]]></description><category></category></item></channel></rss>