自定義jsp標籤

 permission.tld 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"   
    "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
    <tlib-version>1.0</tlib-version>
    <jsp-version>2.0</jsp-version>
    <short-name>per</short-name>
    <!-- backGroundTag -->
    <uri>http://www.sdyy.tag</uri>
    <tag>
        <name>hasUrlPerm</name>
        <tag-class>com.shenhesoft.logistics.manage.web.utils.tags.HasUrlPermissionTag</tag-class>
        <attribute>
            <name>code</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <type>java.lang.String</type>
            <description>/forMain.do</description>
        </attribute>
        
    </tag>
</taglib>

 HasUrlPermissionTag

package com.shenhesoft.logistics.manage.web.utils.tags;

import java.util.List;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyTagSupport;

import com.shenhesoft.logistics.common.session.AppSession;

/**
 * @description
 * 
 * @author shilvfei
 * 
 * @date 2018年5月10日
 */
public class HasUrlPermissionTag extends BodyTagSupport {

	private String code;//  acApplication/forMain.do
	
	@Override
	public int doStartTag() throws JspException {
        //獲取session中存放的權限
        List<String> permissionCodes = AppSession.getUserPermissionCodes();
        //判斷是否有權限訪問
        if (permissionCodes.contains(code)) {
            //容許訪問標籤body
            return BodyTagSupport.EVAL_BODY_INCLUDE;// 返回此則執行標籤body中內容，SKIP_BODY則不執行
        } else {
            return BodyTagSupport.SKIP_BODY;
        }
	}
	
	 @Override
    public int doEndTag() throws JspException {
        return BodyTagSupport.EVAL_BODY_INCLUDE;
    }

	public String getCode() {
		return code;
	}

	public void setCode(String code) {
		this.code = code;
	}
	
}

導入到jsp中

<%@ taglib uri="/WEB-INF/permission.tld" prefix="per"%>

如何使用

<per:hasUrlPerm code="driverAccountsFinanceAudit">
 <button class="btn-xs btn-primary pull-right checks" id="btnDriverAccountsFinanceAudit">財務審覈</button>
</per:hasUrlPerm>

 

參照文檔:

http://www.runoob.com/jsp/jsp-custom-tags.html

https://www.cnblogs.com/flying607/p/5063207.html