Xml代码  

1. <? xml   version = "1.0"   encoding = "UTF-8" ?>   
2. < beans   xmlns = "http://www.springframework.org/schema/beans"   
3.     xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"   xmlns:security ="http://www.springframework.org/schema/security"   
4.     xsi:schemaLocation ="http://www.springframework.org/schema/beans   
5.             http://www.springframework.org/schema/beans/spring-beans.xsd  
6.             http://www.springframework.org/schema/security   
7.             http://www.springframework.org/schema/security/spring-security.xsd">   
8.   
9.     <!-- 保护应用程序的所有URL，只有拥有ROLE_USER才可以访问 -->   
10.     < security:http   auto-config = "true" >   
11.         < security:intercept-url   pattern = "/**"   access = "ROLE_USER"   />   
12.     </ security:http >   
13.       
14.     <!--配置认证管理器,只有用户名为user，密码为user的用户，角色为ROLE_USER可访问指定的资源 -->  
15.     < security:authentication-manager >   
16.         < security:authentication-provider >   
17.             < security:user-service >   
18.                 < security:user   name = "user"    password = "user"   authorities ="ROLE_USER" />   
19.             </ security:user-service >   
20.         </ security:authentication-provider >   
21.     </ security:authentication-manager >   
22. </ beans >   

Xml代码  

1. <? xml   version = "1.0"   encoding = "UTF-8" ?>   
2. < web-app   xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"   xmlns ="http://java.sun.com/xml/ns/javaee"   xmlns:web ="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"   xsi:schemaLocation ="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  id = "WebApp_ID"   version = "2.5" >   
3.   < display-name > springSecurity </ display-name >   
4.     <!--******************************** -->   
5.     <!--*******log4j日志信息的配置****** -->   
6.     <!--******************************* -->   
7.     < context-param >   
8.         < param-name > log4jConfigLocation </ param-name >   
9.         < param-value > classpath:log4j.xml </ param-value >   
10.     </ context-param >   
11.     <!--Spring默认刷新Log4j配置文件的间隔,单位为millisecond，可以不设置 -->   
12.     < context-param >   
13.         < param-name > log4jRefreshInterval </ param-name >   
14.         < param-value > 60000 </ param-value >   
15.     </ context-param >   
16.   
17.     <!--******************************** -->   
18.     <!--*******spring bean的配置******** -->   
19.     <!--******************************* -->   
20.     < context-param >   
21.         < param-name > contextConfigLocation </ param-name >   
22.         < param-value > classpath:applicationContext.xml </ param-value >   
23.     </ context-param >   
24.       
25.     < listener >   
26.         < listener-class > org.springframework.web.util.Log4jConfigListener </listener-class >   
27.     </ listener >   
28.     < listener >   
29.         < listener-class > org.springframework.web.context.ContextLoaderListener </listener-class >   
30.     </ listener >   
31.     < listener >   
32.         < listener-class > org.springframework.web.util.IntrospectorCleanupListener </listener-class >   
33.     </ listener >   
34.     <!--******************************** -->   
35.     <!--*******字符集 过滤器************ -->   
36.     <!--******************************* -->   
37.     < filter >   
38.         < filter-name > CharacterEncodingFilter </ filter-name >   
39.         < filter-class > org.springframework.web.filter.CharacterEncodingFilter </filter-class >   
40.         < init-param >   
41.             < param-name > encoding </ param-name >   
42.             < param-value > UTF-8 </ param-value >   
43.         </ init-param >   
44.         < init-param >   
45.             < param-name > forceEncoding </ param-name >   
46.             < param-value > true </ param-value >   
47.         </ init-param >   
48.     </ filter >   
49.     < filter-mapping >   
50.         < filter-name > CharacterEncodingFilter </ filter-name >   
51.         < url-pattern > /* </ url-pattern >   
52.     </ filter-mapping >   
53.   
54.     <!--******************************** -->   
55.     <!--*******session的配置************ -->   
56.     <!--******************************* -->   
57.     < session-config >   
58.         < session-timeout > 30 </ session-timeout >   
59.     </ session-config >   
60.       
61.     <!-- SpringSecurity必须的begin -->   
62.     < filter >   
63.         < filter-name > springSecurityFilterChain </ filter-name >   
64.         < filter-class > org.springframework.web.filter.DelegatingFilterProxy </filter-class >   
65.     </ filter >   
66.     <!-- 拦截所有的请求 -->   
67.     < filter-mapping >   
68.         < filter-name > springSecurityFilterChain </ filter-name >   
69.         < url-pattern > /* </ url-pattern >   
70.     </ filter-mapping >   
71.     <!-- SpringSecurity必须的end -->   
72.       
73.   < welcome-file-list >   
74.     < welcome-file > index.jsp </ welcome-file >   
75.   </ welcome-file-list >   
76. </ web-app >   

Html代码  

1. < %@ page  language = "java"   contentType = "text/html; charset=UTF-8"   
2.     pageEncoding = "UTF-8" % >   
3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">   
4. < html >   
5. < head >   
6. < meta   http-equiv = "Content-Type"   content = "text/html; charset=UTF-8" >   
7. < title > 首页 </ title >   
8. </ head >   
9. < body >   
10.     < h1 > 这里是首页，欢迎你！ </ h1 >   
11.     < %   
12.         String[] str  =  session .getValueNames();  
13.         for(int i = 0 ;i < str.length ;i++){  
14.             out.println("key =="+str[i]);  
15.             out.println("value =="+session.getAttribute(str[i]));  
16.         }  
17.     %>   
18. </ body >   
19. </ html >   

1 wget http://bits.xensource.com/oss-xen/release/4.1.2/xen-4.1.2.tar.gz

1 yum groupinstall "Development Libraries" 2 yum groupinstall "Development Tools" 3 yum install transfig wget texi2html libaio-devel dev86 glibc-devel e2fsprogs-devel gitk mkinitrd iasl xz-devel 4 bzip2-devel pciutils-libs pciutils-devel SDL-devel libX11-devel gtk2-devel bridge-utils PyXML qemu-common qemu-img mercurial libidn-devel 5 yum -y install glibc-devel.i686texinfo libuuid-devel iasl python-lxml 6 yum -y install openssl openssl-devel 7 yum -y install ncurses ncurses-* 8 yum -y install python-devel

1 tar zxvf xen-4.1.2.tar.gz 2 cd xen-4.1.2 3 make world

1 make install

1 /sbin/chkconfig --add xend 2 /sbin/chkconfig --add xencommons 3 /sbin/chkconfig --add xendomains 4 /sbin/chkconfig xend on 5 /sbin/chkconfig xendomains on 6 /sbin/chkconfig xencommons on

 1 wget http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.1.2.tar.bz2  2 tar -jxvf linux-3.1.3.tar.bz2  3 make menuconfig  4   5 Processor type and features --- >  6      选中Paravirtualized Guest Support  7   Device Drivers --->   8       Xen driver support --->   9         全部选* 10  11 修改：CONFIG_XEN_DEV_EVTCHN=y（如果是m，开机时无法启动xencommons）

1 CONFIG_XEN_BLKDEV_BACKEND=m 2 CONFIG_XEN_NETDEV_BACKEND=m

1 make 2 make modules 3 make modules_install 4 make install  5 depmod 3.1.2 6 mkinitrd -v -f --with=aacraid --with=sd_mod --with=scsi_mod initramfs-3.1.2.img 3.1.2

1 title Xen (3.1.2-xen) 2         root (hd0,0) 3         kernel /xen-4.1.2.gz dom0_mem=512M 4         module /vmlinuz-3.1.2 ro root=UUID=3f920108-b74b-46b9-81c2-aff834494381   5 rd_DM_UUID=ddf1_4c5349202020202010000055000000004711471100001450 rd_NO_LUKS rd_NO_LVM rd_NO_MD LANG=en_US.UTF-8   6 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet 7         module /initramfs-3.1.2.img

1 yum install libvirt virt-manager xorg-x11-xauth

 1 [root@el6 ~]# virt-manager &  2 [1] 2867  3 Unable to open connection to hypervisor URI 'xen:///':  4 no connection driver available for xen:///  5 Traceback (most recent call last):  6   File "/usr/share/virt-manager/virtManager/connection.py", line 992, in _try_open  7     None], flags)  8   File "/usr/lib64/python2.6/site-packages/libvirt.py", line 111, in openAuth  9     if ret is None:raise libvirtError('virConnectOpenAuth() failed') 10 libvirtError: no connection driver available for xen:///

 1 [root@el6 ~]# cd /root/src  2 [root@el6 src]# wget ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libvirt-0.8.1-27.el6.src.rpm  3 [root@el6 src]# rpm -i libvirt-0.8.1-27.el6.src.rpm  4 [root@el6 src]# wget http://pasik.reaktio.net/xen/patches/libvirt-spec-rhel6-enable-xen.patch  5 [root@el6 src]# cd /root/rpmbuild/SPECS  6 [root@el6 SPECS]# cp -a libvirt.spec libvirt.spec.orig  7 [root@el6 SPECS]# patch -p0 < ~/src/libvirt-spec-rhel6-enable-xen.patch  8 patching file libvirt.spec  9  10 [root@el6 SPECS]# rpmbuild -bb libvirt.spec 11 error: Failed build dependencies: 12         libnl-devel >= 1.1 is needed by libvirt-0.8.1-27.el6.x86_64 13         xhtml1-dtds is needed by libvirt-0.8.1-27.el6.x86_64 14         libudev-devel >= 145 is needed by libvirt-0.8.1-27.el6.x86_64 15         libpciaccess-devel >= 0.10.9 is needed by libvirt-0.8.1-27.el6.x86_64 16         yajl-devel is needed by libvirt-0.8.1-27.el6.x86_64 17         libpcap-devel is needed by libvirt-0.8.1-27.el6.x86_64 18         avahi-devel is needed by libvirt-0.8.1-27.el6.x86_64 19         parted-devel is needed by libvirt-0.8.1-27.el6.x86_64 20         device-mapper-devel is needed by libvirt-0.8.1-27.el6.x86_64 21         numactl-devel is needed by libvirt-0.8.1-27.el6.x86_64 22         netcf-devel >= 0.1.4 is needed by libvirt-0.8.1-27.el6.x86_64 23  [root@el6 SPECS]# yum install libnl-devel xhtml1-dtds libudev-devel libpciaccess-devel yajl-devel libpcap-devel avahi-devel parted-devel device-mapper-devel numactl-devel netcf-devel

1 http://rpm.pbone.net/index.php3

1 [root@gb31 SPECS]# rpmbuild -bb libvirt.spec 2 After a while you'll see:  3 Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-0.8.1-27.el6.x86_64.rpm 4 Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-client-0.8.1-27.el6.x86_64.rpm 5 Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-devel-0.8.1-27.el6.x86_64.rpm 6 Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-python-0.8.1-27.el6.x86_64.rpm 7 Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-debuginfo-0.8.1-27.el6.x86_64.rpm

1 [root@el6 ~]# cd /root/rpmbuild/RPMS/x86_64/ 2 [root@el6 x86_64]# rpm -Uvh --force libvirt-0.8.1-27.el6.x86_64.rpm libvirt-client-0.8.1-27.el6.x86_64.rpm libvirt-python-0.8.1-27.el6.x86_64.rpm 3 Preparing...                ########################################### [100%] 4    1:libvirt-client         ########################################### [ 33%] 5    2:libvirt                ########################################### [ 67%] 6    3:libvirt-python         ########################################### [100%]

1 ERROR unable to connect to ‘localhost:8000′: Connection refused

1 解决方案：查看libvirtd服务是否启动，关闭防火墙，在/etc/xen/xend-config.sxp  2 (xend-http-server yes) 3 # Port xend should use for the HTTP interface, if xend-http-server is set. 4 (xend-port 8000) 5 去掉上面两个括弧的注释，ok

1 service xend restart

 1 DEVICE="eth0"  2 BOOTPROTO="static"  3 HWADDR="**********“  4 NM_CONTROLLED="no"  5 ONBOOT="yes"  6 IPADDR="*******”  7 NETMASK="255.255.0.0"  8 GATEWAY="********"  9 TYPE=Ethernet 10 DNS1="8.8.8.8" 11 DNS2="8.8.4.4" 12 BRIDGE=br100

 1 DEVICE="br100"  2 BOOTPROTO="static"  3 HWADDR="*********"  4 NM_CONTROLLED="no"  5 ONBOOT="yes"  6 IPADDR="*******"  7 NETMASK="255.255.0.0"  8 GATEWAY="*******"  9 TYPE=Bridge 10 DEFROUTE=yes 11 DNS1="8.8.8.8" 12 DNS2="8.8.4.4"

String url="http://10.58.2.131:8088/spesBiz/test1.jsp";
String cmd = "cmd.exe /c start " + url;

try {
 Process proc = Runtime.getRuntime().exec(cmd);
 proc.waitFor();
}
catch (Exception e)
{
 e.printStackTrace();
}

js数组元素的添加和删除一直比较迷惑，今天终于找到详细说明的资料了，先给个我测试的代码^-^
var arr = new Array();
arr[0] = "aaa";
arr[1] = "bbb";
arr[2] = "ccc";
//alert(arr.length);//3
arr.pop();
//alert(arr.length);//2
//alert(arr[arr.length-1]);//bbb
arr.pop();
//alert(arr[arr.length-1]);//aaa
//alert(arr.length);//1

var arr2 = new Array();
//alert(arr2.length);//0
arr2[0] = "aaa";
arr2[1] = "bbb";
//alert(arr2.length);//2
arr2.pop();
//alert(arr2.length);//1
arr2 = arr2.slice(0,arr2.length-1);
//alert(arr2.length);//0
arr2[0] = "aaa";
arr2[1] = "bbb";
arr2[2] = "ccc";
arr2 = arr2.slice(0,1);
alert(arr2.length);//1
alert(arr2[0]);//aaa
alert(arr2[1]);//undefined

shift：删除原数组第一项，并返回删除元素的值；如果数组为空则返回undefined
var a = [1,2,3,4,5];
var b = a.shift(); //a：[2,3,4,5]   b：1

unshift：将参数添加到原数组开头，并返回数组的长度
var a = [1,2,3,4,5];
var b = a.unshift(-2,-1); //a：[-2,-1,1,2,3,4,5]   b：7
注：在IE6.0下测试返回值总为undefined，FF2.0下测试返回值为7，所以这个方法的返回值不可靠，需要用返回值时可用splice代替本方法来使用。

pop：删除原数组最后一项，并返回删除元素的值；如果数组为空则返回undefined
var a = [1,2,3,4,5];
var b = a.pop(); //a：[1,2,3,4]   b：5//不用返回的话直接调用就可以了

push：将参数添加到原数组末尾，并返回数组的长度
var a = [1,2,3,4,5];
var b = a.push(6,7); //a：[1,2,3,4,5,6,7]   b：7

concat：返回一个新数组，是将参数添加到原数组中构成的
var a = [1,2,3,4,5];
var b = a.concat(6,7); //a：[1,2,3,4,5]   b：[1,2,3,4,5,6,7]

splice(start,deleteCount,val1,val2,...)：从start位置开始删除deleteCount项，并从该位置起插入val1,val2,...

在清空数组时，只需传递startIndex。

如果不删除所有元素，再传递deleteCount参数。

splice还具有先删除后添加的功能，即先删除几个元素，然后在删除的位置再添加若干元素，删除与添加的元素的个数没有必须相等，这时侯deleteCount也是要用到的。
var a = [1,2,3,4,5];
var b = a.splice(2,2,7,8,9); //a：[1,2,7,8,9,5]   b：[3,4]
var b = a.splice(0,1); //同shift
a.splice(0,0,-2,-1); var b = a.length;//同unshift
var b = a.splice(a.length-1,1);//同pop
a.splice(a.length,0,6,7); var b = a.length; //同push

reverse：将数组反序
var a = [1,2,3,4,5];
var b = a.reverse(); //a：[5,4,3,2,1]   b：[5,4,3,2,1]

sort(orderfunction)：按指定的参数对数组进行排序
var a = [1,2,3,4,5];
var b = a.sort(); //a：[1,2,3,4,5]   b：[1,2,3,4,5]

slice(start,end)：返回从原数组中指定开始下标到结束下标之间的项组成的新数组
var a = [1,2,3,4,5];
var b = a.slice(2,5); //a：[1,2,3,4,5]   b：[3,4,5]

join(separator)：将数组的元素组起一个字符串，以separator为分隔符，省略的话则用默认用逗号为分隔符
var a = [1,2,3,4,5];
var b = a.join("|"); //a：[1,2,3,4,5]   b："1|2|3|4|5"

再给个利用数组模拟javaStringBuffer处理字符串的方法：

/**
* 字符串处理函数
*/
function StringBuffer() {
var arr = new Array;
this.append = function(str) {
    arr[arr.length] = str;
};

this.toString = function() {
    return arr.join("");//把append进来的数组ping成一个字符串
};
}

今天在应用中突然发现join是一种把数组转换成字符串的好方法，故封装成对象使用了：

/**
*把数组转换成特定符号分割的字符串
*/
function arrayToString(arr,separator) {
if(!separator) separator = "";//separator为null则默认为空
    return arr.join(separator);
}

/**
* 查找数组包含的字符串
*/
function arrayFindString(arr,string) {
var str = arr.join("");
    return str.indexOf(string);
}