wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
2、查看服务器已安装的版本q卸?br />
yum repolist enabled | grep "mysql.*-community.*"
执行后发现安装了(jin)8.0
执行后发现安装了(jin)8.0
rpm -qa | grep -i mysql 查看安装?jin)哪?.0的依?br />
yum remove mysql-community-libs-compat-8.0.12-1.el7.x86_64
.....
yum install mysql57-community-release-el7-10.noarch.rpm
.....
yum install mysql57-community-release-el7-10.noarch.rpm
3、安?br /> yum install mysql-community-server
4、启动ƈ修改密码
service mysqld start
netstat -ntl 查看默认端口3306是否成功启动
cat /var/log/mysqld.log |grep password 查看默认root密码
mysql -u root -p
alter user user() identified by "fdsafdasfdas@1311231sfsa";
4、启动ƈ修改密码
service mysqld start
netstat -ntl 查看默认端口3306是否成功启动
cat /var/log/mysqld.log |grep password 查看默认root密码
mysql -u root -p
alter user user() identified by "fdsafdasfdas@1311231sfsa";
]]>
2、编?虚拟|络~辑?VMNET8
(NAT模式Q?-NAT讄Q网关IPQ设|ؓ(f)本机ipconfig/all所昄的网关ip所在网D늚某个ipQ?br /> 如：(x)ipconfig/all昄Q?/div>
IPv4 地址 . . . . . . . . . . . . : 10.10.10.12(首?
子网掩码 . . . . . . . . . . . . : 255.255.255.0
默认|关. . . . . . . . . . . . . : 10.10.10.1
DNS 服务?nbsp; . . . . . . . . . . . : 10.10.10.1
则设|ؓ(f)Q?br /> 10.10.10.122?0.10.10.133......
同时Q子|IP写ؓ(f)Q?0.10.10.0 子网掩码Q?55.255.255.0
3、vi /etc/sysconfig/network-scripts/ifcfg-ens33
4、service network restart
7、安装bitcoinE序
git tag
则设|ؓ(f)Q?br /> 10.10.10.122?0.10.10.133......
同时Q子|IP写ؓ(f)Q?0.10.10.0 子网掩码Q?55.255.255.0
3、vi /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=ef96c2f5-354a-4a17-a1ea-e0cee6397619
DEVICE=ens33
ONBOOT=yes
IPADDR=10.10.10.132
NETMASK=255.255.255.0
GATEWAY=10.10.10.122
DNS=10.10.10.1
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=ef96c2f5-354a-4a17-a1ea-e0cee6397619
DEVICE=ens33
ONBOOT=yes
IPADDR=10.10.10.132
NETMASK=255.255.255.0
GATEWAY=10.10.10.122
DNS=10.10.10.1
4、service network restart
5、ping baidu.com 通过
6、安装更新必要的?br />yum update
yum install lrzsz zip unzip telnet
6、安装更新必要的?br />yum update
yum install lrzsz zip unzip telnet
yum -y install make zlib zlib-devel gcc-c++ libtool openssl openssl-devel
rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
yum install nginx
yum install git
7、安装bitcoinE序
git clone https://github.com/bitcoin/bitcoin.git
cd bitcoingit tag
git checkout v0.18.0
./autogen.sh
yum install -y boost-devel qt-devel protobuf-devel qrencode-devel libevent-devel libtool openssl-devel libdb-devel
./configure (q里可能?x)失败?j)
wget http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz
tar xf db-4.8.30.NC.tar.gz
cd db-4.8.30.NC/build_unix
../dist/configure --enable-cxx --disable-shared --with-pic --prefix=/home/download/bitcoin/db4/
make
make install
cd bitcoin
make
make install
cd bitcoin
./configure LDFLAGS="-L/home/download/bitcoin/db4/lib/" CPPFLAGS="-I/home/download/bitcoin/db4/include/"
make
make install
make
make install
bitcoind -datadir=/home/data/btc -conf=bitcoin.conf -daemon
tail -f /home/data/btc/debug.log
]]>
2、课E开始前Q需要自动给评x者以各种提醒
于是采用?jin)这L(fng)实现Ҏ(gu)Q?br />1、录入时间只记录当天的时分秒对应的毫U数Q这样入库的旉实际上是1970-01-01 HH:mm:ssQ?br />2、定时Q务根据当天所在的周数查询当天的课E安排，q将评旉换算成当天的旉Q?015-09-08 HH:mm:ssQ，然后执行提醒的业?br />
很简单的一个功能，但是因ؓ(f)时区问题出现?jin)以下奇葩现象?x)
比如1970-01-01 10:00:00被最l换成?970-01-01 10:30:00
也就是说每一个入库时间取出后都增加了(jin)不多不少半个时
于是开始看java.util.Date源码Q一探究竟，发现有这样一D：(x)
BaseCalendar cal = getCalendarSystem(year);
if (tzoffset == -1) { // no time zone specified, have to use local
BaseCalendar.Date ldate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
if (tzoffset == -1) { // no time zone specified, have to use local
BaseCalendar.Date ldate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
注意到TimeZone.getDefaultRef(),源码如下Q?br />
public static TimeZone getDefault() {
return (TimeZone) getDefaultRef().clone();
}
/**
* Returns the reference to the default TimeZone object. This
* method doesn't create a clone.
*/
static TimeZone getDefaultRef() {
TimeZone defaultZone = defaultZoneTL.get();
if (defaultZone == null) {
defaultZone = defaultTimeZone;
if (defaultZone == null) {
// Need to initialize the default time zone.
defaultZone = setDefaultZone();
assert defaultZone != null;
}
}
// Don't clone here.
return defaultZone;
}
return (TimeZone) getDefaultRef().clone();
}
/**
* Returns the reference to the default TimeZone object. This
* method doesn't create a clone.
*/
static TimeZone getDefaultRef() {
TimeZone defaultZone = defaultZoneTL.get();
if (defaultZone == null) {
defaultZone = defaultTimeZone;
if (defaultZone == null) {
// Need to initialize the default time zone.
defaultZone = setDefaultZone();
assert defaultZone != null;
}
}
// Don't clone here.
return defaultZone;
}
推测很有可能问题出在时区的选择讄上，于是打印出来l果如下Q?br />
sun.util.calendar.ZoneInfo[id="Asia/Harbin",offset=28800000,dstSavings=0,useDaylight=false,transitions=19,lastRule=null]
果然如此Q服务器时区错误Q于是指?gu)个错误，让运l修正的?br />不过q是担心(j)q维层面带来cM的错误，于是手动讄?jin)时区?x)
TimeZone.setDefault(TimeZone.getTimeZone("Asia/Shanghai"));
logger.info("the default timezone info [{}]", TimeZone.getDefault());
logger.info("the default timezone info [{}]", TimeZone.getDefault());
技术文章收藏站?/a>
]]>
]]>
]]>
]]>
1 @Controller
2 @RequestMapping("/")
3 public class UserController {
4 @RequestMapping(value = "{userid}", method = RequestMethod.GET)
5 public ModelAndView userIndex(@PathVariable Long userid){
6 return new ModelAndView("userIndex").addObject(userid);
7 }
8 }
2 @RequestMapping("/")
3 public class UserController {
4 @RequestMapping(value = "{userid}", method = RequestMethod.GET)
5 public ModelAndView userIndex(@PathVariable Long userid){
6 return new ModelAndView("userIndex").addObject(userid);
7 }
8 }
2、web.xml中的两处DispatcherServlet配置Q?/strong>
1 <servlet>
2 <servlet-name>user-servlet</servlet-name>
3 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
4 <load-on-startup>1</load-on-startup>
5 </servlet>
6 <servlet-mapping>
7 <servlet-name>user-servlet</servlet-name>
8 <url-pattern>*.do</url-pattern>
9 </servlet-mapping>
10 <servlet>
11 <servlet-name>hessian-servlet</servlet-name>
12 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
13 <init-param>
14 <param-name>contextConfigLocation</param-name>
15 <param-value>
16 classpath:spring/hessian-remoting.xml
17 </param-value>
18 </init-param>
19 <load-on-startup>2</load-on-startup>
20 </servlet>
21 <servlet-mapping>
22 <servlet-name>hessian-servlet</servlet-name>
23 <url-pattern>/hessian/*</url-pattern>
24 </servlet-mapping>
2 <servlet-name>user-servlet</servlet-name>
3 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
4 <load-on-startup>1</load-on-startup>
5 </servlet>
6 <servlet-mapping>
7 <servlet-name>user-servlet</servlet-name>
8 <url-pattern>*.do</url-pattern>
9 </servlet-mapping>
10 <servlet>
11 <servlet-name>hessian-servlet</servlet-name>
12 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
13 <init-param>
14 <param-name>contextConfigLocation</param-name>
15 <param-value>
16 classpath:spring/hessian-remoting.xml
17 </param-value>
18 </init-param>
19 <load-on-startup>2</load-on-startup>
20 </servlet>
21 <servlet-mapping>
22 <servlet-name>hessian-servlet</servlet-name>
23 <url-pattern>/hessian/*</url-pattern>
24 </servlet-mapping>
3、hessian-remoting.xml中服务配|：(x)
1 <bean name="/userHessianService" class="org.springframework.remoting.caucho.HessianServiceExporter">
2 <property name="service" ref="userService"/>
3 <property name="serviceInterface" value="com.cd.common.UserService"/>
4 </bean>
2 <property name="service" ref="userService"/>
3 <property name="serviceInterface" value="com.cd.common.UserService"/>
4 </bean>
4、我预期的结果是Q?/span>
当我在浏览器中直接访问hessian服务“http://localhost/hessian/userHessianService”Ӟ应该报错QHTTP Status 405 - HessianServiceExporter only supports POST requests
虽然报错Q但可以表明q个h被hessian服务接收C(jin)?/span>
而实际情冉|Q报错ؓ(f) HTTP Status 400 - The request sent by the client was syntactically incorrect ()
5、问题出在哪里？把web.xml中的user-servlet注释掉，重新启动q访问，能得到预期结果，加上后就不行?/span>
可以断定问题出来user-servlet相关的程序里Q于是还原注释重启ƈ观察spring mvc日志Q注意到有如下一D：(x)
2012-04-11 18:25:36,446 INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}] onto handler 'UserController'
2012-04-11 18:25:36,446 INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}.*] onto handler 'UserController'
2012-04-11 18:25:36,446 INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}/] onto handler 'UserController'
6、分析：(x)user-servlet处理*.do的链接，hessian-servlet处理/hessian/*的请求，而从spring mvc映射的url来看Q?{userid}(Longcd参数)很可能去匚w?jin)测试链?/span>
7、尝试解军_法：(x)让spring mvc只映?dol尾的链接，修改@RequestMapping(value = "{userid}", method = RequestMethod.GET)
为@RequestMapping(value = "{userid}.do", method = RequestMethod.GET)
8、验证结?/span>Qspring mvc加蝲Q[org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}.do] onto handler 'UserController'
讉Khttp://localhost/hessian/userHessianService
l果HTTP Status 405 - HessianServiceExporter only supports POST requests
得到预期l果Q测试结束?/span>
当我在浏览器中直接访问hessian服务“http://localhost/hessian/userHessianService”Ӟ应该报错QHTTP Status 405 - HessianServiceExporter only supports POST requests
虽然报错Q但可以表明q个h被hessian服务接收C(jin)?/span>
而实际情冉|Q报错ؓ(f) HTTP Status 400 - The request sent by the client was syntactically incorrect ()
5、问题出在哪里？把web.xml中的user-servlet注释掉，重新启动q访问，能得到预期结果，加上后就不行?/span>
可以断定问题出来user-servlet相关的程序里Q于是还原注释重启ƈ观察spring mvc日志Q注意到有如下一D：(x)
2012-04-11 18:25:36,446 INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}] onto handler 'UserController'
2012-04-11 18:25:36,446 INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}.*] onto handler 'UserController'
2012-04-11 18:25:36,446 INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}/] onto handler 'UserController'
6、分析：(x)user-servlet处理*.do的链接，hessian-servlet处理/hessian/*的请求，而从spring mvc映射的url来看Q?{userid}(Longcd参数)很可能去匚w?jin)测试链?/span>
7、尝试解军_法：(x)让spring mvc只映?dol尾的链接，修改@RequestMapping(value = "{userid}", method = RequestMethod.GET)
为@RequestMapping(value = "{userid}.do", method = RequestMethod.GET)
8、验证结?/span>Qspring mvc加蝲Q[org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/{userid}.do] onto handler 'UserController'
讉Khttp://localhost/hessian/userHessianService
l果HTTP Status 405 - HessianServiceExporter only supports POST requests
得到预期l果Q测试结束?/span>
]]>
1、下载node-v0.6.1.msiQ地址Qhttp://nodejs.org/dist/v0.6.1/node-v0.6.1.msi
2、安装后配置环境变量Q在命o(h)行中能直接访问Node.exe
3、下载http://msysgit.googlecode.com/files/Git-1.7.8-preview20111206.exe
4、运行安装，配置环境变量
5、选一个工作目录，执行git clone --recursive git://github.com/isaacs/npm.git 安装NPM
6、进入生成的npm目录Q执行node cli.js install npm -gf
7、最后执行npm install underscore
2、安装后配置环境变量Q在命o(h)行中能直接访问Node.exe
3、下载http://msysgit.googlecode.com/files/Git-1.7.8-preview20111206.exe
4、运行安装，配置环境变量
5、选一个工作目录，执行git clone --recursive git://github.com/isaacs/npm.git 安装NPM
6、进入生成的npm目录Q执行node cli.js install npm -gf
7、最后执行npm install underscore
]]>