<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[zyhlearnjava的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/zyhlearnjava</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; zyhlearnjava]]></copyright><item><title><![CDATA[IDEA下开启热部署配置]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/82462608</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/82462608</guid><author>zyhlearnjava</author><pubDate>Thu, 06 Sep 2018 15:59:40 +0800</pubDate><description><![CDATA[第一步：

设置IDEA开启项目自动编译，File--》Settings--》Compiler 勾选右边的Build Project automatically，如下图：



 第二部：

开启项目运行时的自动make，组合键ctrl + shift + a(windows电脑),command+shift+alt+/(mac系统)搜索命令：registry--》 勾选compiler.auto...]]></description><category></category></item><item><title><![CDATA[整合redis时set值出现\xac\xed\x00\x05t\x00\x10解决办法]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/81019934</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/81019934</guid><author>zyhlearnjava</author><pubDate>Thu, 12 Jul 2018 17:56:26 +0800</pubDate><description><![CDATA[正在使用ssm整合redis，在进行测试的时候发现，通过Java（jedis）代码进行set操作时，在redis客户端查看发现前面多了\xac\xed\x00\x05t\x00\x10这么一串无意义的内容。解决办法：在redis配置中配置&amp;lt;bean id=&quot;redisTemplate&quot; class=&quot;org.springframework.data.redis.core.RedisTempl...]]></description><category></category></item><item><title><![CDATA[利用zxing.jar在线生成二维码]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/80250959</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/80250959</guid><author>zyhlearnjava</author><pubDate>Wed, 09 May 2018 13:22:10 +0800</pubDate><description><![CDATA[废话不多说，直接上代码，实现的功能比较简单：利用Google的zxing.jar包，在网页上直接生成二维码，基础代码比较简单，其他功能有待各位去拓展，解析由前端找插件解析就行了，我就没做解析。注意，jdk请保持在1.7及其以上版本import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRespon...]]></description><category></category></item><item><title><![CDATA[Mybatis mapper.xml sql语句转义字符]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/78920477</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/78920477</guid><author>zyhlearnjava</author><pubDate>Thu, 28 Dec 2017 12:28:06 +0800</pubDate><description><![CDATA[在xml的sql语句中，不能直接用大于号、小于号、单引号、双引号，要用转义字符替代
在sql语句里动态赋值时，如果说需要用单引号，不能直接用 ‘ 表示：
举例：

        select 
            t.*,to_char(t.UP_DATE,'yyyy-mm-dd hh24:mi:ss') upDate123
        from BUS_CAR_TRACK t]]></description><category></category></item><item><title><![CDATA[Oracle数据库，逗号分割字符串]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/77584993</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/77584993</guid><author>zyhlearnjava</author><pubDate>Fri, 25 Aug 2017 18:28:53 +0800</pubDate><description><![CDATA[Oracle数据库，有一个字段，存储的是位置点的坐标（经纬度，来自百度地图），以varchar类型存入，经纬度之间以逗号分割
SELECT substr(t.longandlat,0,instr(t.longandlat,',')-1) lng,substr(t.longandlat,instr(t.longandlat,',')+1,length(t.longandlat)) lat
FROM]]></description><category></category></item><item><title><![CDATA[centOS7下redis3.0安装以及布置集群教程（单机创建多个实例调试）]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/73008054</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/73008054</guid><author>zyhlearnjava</author><pubDate>Sat, 10 Jun 2017 20:53:33 +0800</pubDate><description><![CDATA[版本说明
本教程使用redis3.0版本。3.0版本主要增加了redis集群功能。

安装的前提条件

需要安装gcc：yuminstall gcc-c++（如果你的Linux环境下已经装过了Nginx，此处可忽略，因为Nginx也需要gcc环境才能安装）
源码下载：此处提供官网下载地址（点击打开链接）
安装位置：将redis-3.0.0.tar.gz拷贝到/usr/local下（本]]></description><category></category></item><item><title><![CDATA[centOS下 jedis连接redis失败 redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectExce]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/72923416</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/72923416</guid><author>zyhlearnjava</author><pubDate>Thu, 08 Jun 2017 16:32:29 +0800</pubDate><description><![CDATA[问题描述：
在eclipse下写test，确认导入包无误后，通过Junit测试，连接redis失败代码如下


@Test
public void testJedis() throws Exception{
//创建和redis的链接 

Jedis jedis = new Jedis("192.168.181.132",6379);
//存入
jedis.set("key2"]]></description><category></category></item><item><title><![CDATA[maven项目Junit单元测试java.lang.ClassNotFoundException解决]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/72083624</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/72083624</guid><author>zyhlearnjava</author><pubDate>Sun, 14 May 2017 22:46:31 +0800</pubDate><description><![CDATA[问题描述
maven创建的项目，通过run as maven build启动后，测试类统统出现Class not found异常，有时候打开eclipse直接调试测试类的时候又是好好的，有时候maven build以后就出问题
Class not found zyh.controller.TestPageHelper
java.lang.ClassNotFoundException: zyh]]></description><category></category></item><item><title><![CDATA[centOS7，vsftpd，更改默认目录后nginx访问失败，403forbidden解决]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/72049438</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/72049438</guid><author>zyhlearnjava</author><pubDate>Sun, 14 May 2017 18:42:42 +0800</pubDate><description><![CDATA[博主环境centOS7，安装vsftpd后，浏览器访问，更改nginx默认目录后访问失败
修改了nginx配置：
[root@localhost ~]# vim /usr/local/nginx/conf/nginx.conf

   server {
        listen       80;
        server_name  localhost;


     ]]></description><category></category></item><item><title><![CDATA[[emerg] open() "/var/run/nginx/nginx.pid" failed (2: No such file or directory)处理]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71932719</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71932719</guid><author>zyhlearnjava</author><pubDate>Sun, 14 May 2017 10:22:53 +0800</pubDate><description><![CDATA[重启nginx报错，提示：
[emerg] open() "/var/run/nginx/nginx.pid" failed (2: No such file or directory)

解决：在var/run/下建立一个文件夹命名为nginx，然后：
[root@localhost ~]# /usr/local/nginx/sbin/nginx -s reload

搞定！]]></description><category></category></item><item><title><![CDATA[centOS7访问nginx失败解决-.0:80 failed (98: Address already in use)解决]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71908529</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71908529</guid><author>zyhlearnjava</author><pubDate>Sat, 13 May 2017 22:12:48 +0800</pubDate><description><![CDATA[前提：已经配置好静态IP
以防万一，先安装好iptables服务（不管你装没装，先执行，免得后面添乱）
[root@localhost ~]# yum install iptables-services

[root@localhost ~]# systemctl mask firewalld.service

[root@localhost ~]# systemctl enable]]></description><category></category></item><item><title><![CDATA[centOS7 /etc/sysconfig/ 找不到iptables 解决方法]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71774324</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71774324</guid><author>zyhlearnjava</author><pubDate>Fri, 12 May 2017 23:41:35 +0800</pubDate><description><![CDATA[配置防火墙规则
1、[root@localhost ~]# iptables -P OUTPUT ACCEPT
2、[root@localhost ~]#service iptables save

（1）到这里，如果出现save不了，提示：
The service command supports only
 basic LSB actions (start, stop, resta]]></description><category></category></item><item><title><![CDATA[centOS7 配置vsftpd]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71774083</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71774083</guid><author>zyhlearnjava</author><pubDate>Fri, 12 May 2017 22:42:13 +0800</pubDate><description><![CDATA[安装vsftpd的服务器相关软件
1、安装vsftpd服务器和客户端 
            [root@localhost ~]#sudo yum install ftp vsftpd
2、然后该yes的地方yes就行了

添加一个ftp用户

此用户就是用来登录ftp服务器用的。
[root@localhost ~]#useradd ftpuser（如果提示已有这个用户，不用]]></description><category></category></item><item><title><![CDATA[Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.4.1:clean (default-clean) 解决办法]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71516340</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71516340</guid><author>zyhlearnjava</author><pubDate>Wed, 10 May 2017 11:49:45 +0800</pubDate><description><![CDATA[描述：淘淘商城项目练习第二天，分页综合测试，启动maven出现如下问题
Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.4.1:clean (default-clean) on project taotao-manager-web: Failed to clean project: Failed to de]]></description><category></category></item><item><title><![CDATA[log4j:WARN Please initialize the log4j system properly.maven项目启动停止，卡住]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71512710</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71512710</guid><author>zyhlearnjava</author><pubDate>Tue, 09 May 2017 22:43:03 +0800</pubDate><description><![CDATA[描述：淘淘商城项目第二天的练习，ssm整合时出问题，本来maven启动正常。突然后面打开的时候，通过maven build时，控制台信息始终停留在：
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initia]]></description><category></category></item><item><title><![CDATA[启动eclipse出现failed to load the jni shared library解决办法]]></title><link>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71487329</link><guid>https://blog.youkuaiyun.com/zyhlearnjava/article/details/71487329</guid><author>zyhlearnjava</author><pubDate>Tue, 09 May 2017 19:08:53 +0800</pubDate><description><![CDATA[启动出现如下提示框：

推荐用第二种方法解决，第一种一般很少出现！
原因1：
指定路径下（JAVA_HOME）的jvm.dll不存在。
解决：
拷贝一个jvm.dll到指定目录下。
原因2：
eclipse与指定的jdk位数不同（指32位和64位）。
解决：
切换另一位数的jdk，一般做开发电脑上不会只有一个版本的jdk吧~~就在JAVA_HOME改一改就可以了。]]></description><category></category></item></channel></rss>