SSH 常见权限设计四：如何得到<s:a action="url">kkk</s:a>里面的url

/*
* $Id: AnchorTag.java 768855 2009-04-27 02:09:35Z wesw $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*  http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.struts2.views.jsp.ui;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;

import org.apache.struts2.components.Anchor;
import org.apache.struts2.components.Component;
import cn.oppo.oa.domain.User;
import com.opensymphony.xwork2.util.ValueStack;

/**
* @see Anchor
*/
public class AnchorTag extends AbstractClosingTag {

private static final long serialVersionUID = -1034616578492431113L;

protected String href;
protected String includeParams;
protected String scheme;
protected String action;
protected String namespace;
protected String method;
protected String encode;
protected String includeContext;
protected String escapeAmp;
protected String portletMode;
protected String windowState;
protected String portletUrlType;
protected String anchor;
protected String forceAddSchemeHostAndPort;

@Override
public int doEndTag() throws JspException {
// 当前用户
User user = (User) pageContext.getSession().getAttribute("user");

// 当前的URL，如果有参数就要去掉后面的参数字符串
String privilegeUrl = action;
int pos = privilegeUrl.indexOf("?");
if (pos > -1) {
privilegeUrl = privilegeUrl.substring(0, pos);
}

if (user.hasPrivilegeByUrl(privilegeUrl)) {
return super.doEndTag(); // 如果有权限，就正常的生成与输出<a>标签
} else {
return EVAL_PAGE; // 如果没有权限，就不显示当前<a>标签，只是继续执行页面中后面的代码
}
}

public Component getBean(ValueStack stack, HttpServletRequest req, HttpServletResponse res) {
return new Anchor(stack, req, res);
}

protected void populateParams() {
super.populateParams();

Anchor tag = (Anchor) component;
tag.setHref(href);
tag.setIncludeParams(includeParams);
tag.setScheme(scheme);
tag.setValue(value);
tag.setMethod(method);
tag.setNamespace(namespace);
tag.setAction(action);
tag.setPortletMode(portletMode);
tag.setPortletUrlType(portletUrlType);
tag.setWindowState(windowState);
tag.setAnchor(anchor);

if (encode != null) {
tag.setEncode(Boolean.valueOf(encode).booleanValue());
}
if (includeContext != null) {
tag.setIncludeContext(Boolean.valueOf(includeContext).booleanValue());
}
if (escapeAmp != null) {
tag.setEscapeAmp(Boolean.valueOf(escapeAmp).booleanValue());
}
if (forceAddSchemeHostAndPort != null) {
tag.setForceAddSchemeHostAndPort(Boolean.valueOf(forceAddSchemeHostAndPort).booleanValue());
}
}

public void setHref(String href) {
this.href = href;
}

public void setEncode(String encode) {
this.encode = encode;
}

public void setIncludeContext(String includeContext) {
this.includeContext = includeContext;
}

public void setEscapeAmp(String escapeAmp) {
this.escapeAmp = escapeAmp;
}

public void setIncludeParams(String name) {
includeParams = name;
}

public void setAction(String action) {
this.action = action;
}

public void setNamespace(String namespace) {
this.namespace = namespace;
}

public void setMethod(String method) {
this.method = method;
}

public void setScheme(String scheme) {
this.scheme = scheme;
}

public void setValue(String value) {
this.value = value;
}

public void setPortletMode(String portletMode) {
this.portletMode = portletMode;
}

public void setPortletUrlType(String portletUrlType) {
this.portletUrlType = portletUrlType;
}

public void setWindowState(String windowState) {
this.windowState = windowState;
}

public void setAnchor(String anchor) {
this.anchor = anchor;
}

public void setForceAddSchemeHostAndPort(String forceAddSchemeHostAndPort) {
this.forceAddSchemeHostAndPort = forceAddSchemeHostAndPort;
}
}