shrio 提供有jsp 标签，供在jsp 里使用，如果想在beetl中使用，有俩种方法，
一是beetl支持集成jsp页面，所以你可以在在jsp里使用shrio标签
另外，beetl 使用自定义函数写了shiro tag功能，你可以像使用shiro标签那样使用shiro
package com.ext;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.util.Map;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
import org.bee.tl.core.GroupTemplate;
/*gt.registerFunctionPackage("so",new ShiroExt ());
你可以在模板里直接调用，譬如
@if(so.isGuest()) {
*/
public class ShiroExt {
/**
* The guest tag
*
* @return
*/
public boolean isGuest() {
return getSubject() == null || getSubject().getPrincipal() == null;
}
/**
* The user tag
*
* @return
*/
public boolean isUser() {
return getSubject() != null && getSubject().getPrincipal() != null;
}
/**
* The authenticated tag
*
* @return
*/
public boolean isAuthenticated() {
return getSubject() != null && getSubject().isAuthenticated();
}
public boolean isNotAuthenticated() {
return !isAuthenticated();
}
/**
* The principal tag
*
* @param map
* @return
*/
public String principal(Map map) {
String strValue = null;
if (getSubject() != null) {
// Get the principal to print out
Object principal;
String type = map != null ? (String) map.get("type") : null;
if (type == null) {
principal = getSubject().getPrincipal();
} else {
principal = getPrincipalFromClassName(type);
}
String property = map != null ? (String) map.get("property") : null;
// Get the string value of the principal
if (principal != null) {
if (property == null) {
strValue = principal.toString();
} else {
strValue = getPrincipalProperty(principal, property);
}
}
}
if (strValue != null) {
return strValue;
} else {
return null;
}
}
/**
* The hasRole tag
*
* @param roleName
* @return
*/
public boolean hasRole(String roleName) {
return getSubject() != null && getSubject().hasRole(roleName);
}
/**
* The lacksRole tag
*
* @param roleName
* @return
*/
public boolean lacksRole(String roleName) {
boolean hasRole = getSubject() != null
&& getSubject().hasRole(roleName);
return !hasRole;
}
/**
* The hasAnyRole tag
*
* @param roleNames
* @return
*/
public boolean hasAnyRole(String roleNames) {
boolean hasAnyRole = false;
Subject subject = getSubject();
if (subject != null) {
// Iterate through roles and check to see if the user has one of the
// roles
for (String role : roleNames.split(",")) {
if (subject.hasRole(role.trim())) {
hasAnyRole = true;
break;
}
}
}
return hasAnyRole;
}
/**
* The hasPermission tag
*
* @param p
* @return
*/
public boolean hasPermission(String p) {
return getSubject() != null && getSubject().isPermitted(p);
}
/**
* The lacksPermission tag
*
* @param p
* @return
*/
public boolean lacksPermission(String p) {
return !hasPermission(p);
}
@SuppressWarnings({ "unchecked" })
private Object getPrincipalFromClassName(String type) {
Object principal = null;
try {
Class cls = Class.forName(type);
principal = getSubject().getPrincipals().oneByType(cls);
} catch (ClassNotFoundException e) {
}
return principal;
}
private String getPrincipalProperty(Object principal, String property) {
String strValue = null;
try {
BeanInfo bi = Introspector.getBeanInfo(principal.getClass());
// Loop through the properties to get the string value of the
// specified property
boolean foundProperty = false;
for (PropertyDescriptor pd : bi.getPropertyDescriptors()) {
if (pd.getName().equals(property)) {
Object value = pd.getReadMethod().invoke(principal,
(Object[]) null);
strValue = String.valueOf(value);
foundProperty = true;
break;
}
}
if (!foundProperty) {
final String message = "Property [" + property
+ "] not found in principal of type ["
+ principal.getClass().getName() + "]";
throw new RuntimeException(message);
}
} catch (Exception e) {
final String message = "Error reading property [" + property
+ "] from principal of type ["
+ principal.getClass().getName() + "]";
throw new RuntimeException(message, e);
}
return strValue;
}
protected Subject getSubject() {
return SecurityUtils.getSubject();
}
public static void main(String[] args) {
GroupTemplate gt = new GroupTemplate();
gt.registerFunctionPackage("shiro", new ShiroExt());
}
}
