在oa系统中用JSTL函数解决即时认证问题

刚学习了JSTL函数的创建，现在在这小结一下：

1.建一个类如：

package org.yebing.oa.web;

import org.yebing.oa.manager.ACLManager;

public class SecurityFunctions {

private static ACLManager aclManager;

public static boolean hasPermission(int userId,String resourceSn,int permission){
return aclManager.hasPermissionByResourceSn(userId, resourceSn, permission);
}

//由于spring不支持static类型的set方法注入
public void setAclManager(ACLManager aclManager) {
SecurityFunctions.aclManager = aclManager;
}
}

注意：1.方法必须为是static

2.spring不支持static类型的set方法注入
2.在web-inf下建一my.tld文件：

<?xml version="1.0" encoding="UTF-8" ?>

<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
version="2.0">

<tlib-version>1.0</tlib-version>
<short-name>my</short-name>
<uri>http://www.yebing.com/oa/functions</uri>

<function>
<name>hasPermission</name>
<function-class>org.yebing.oa.web.SecurityFunctions</function-class>
<function-signature>boolean hasPermission(int, java.lang.String,int)</function-signature>
</function>
</taglib>

3.再在web.xml中配置此自定义的标签：

<jsp-config>
<taglib>
<taglib-uri>http://www.yebing.com/oa/myfunctions</taglib-uri>
<taglib-location>/WEB-INF/my.tld</taglib-location>
</taglib>
</jsp-config>

4.还需在使用的jsp页面上加上标签声明：

<%@ taglib prefix="my" uri="http://www.yebing.com/oa/myfunctions" %>

5.由于我使用到了spring开发系统，加上在SecurityFunctions用到了aclManager所以要在spring中注入：

<bean id="sucurityFunctions" class="org.yebing.oa.web.SecurityFunctions">
<property name="aclManager" ref="aclManager"></property>
</bean>