最近在做一个网站类型的项目，要对用户的访问模块（权限）进行控制，所以设计并实现了一套简单的权限控制功能。
1. 数据库设计
用户：users
模块：modules
SQL代码：
/*Target Server Type : MYSQLTarget Server Version : 50628File Encoding : 65001Date: 2016-08-26 10:35:28*/SET FOREIGN_KEY_CHECKS=0;-- ------------------------------ Table structure for `modules`-- ----------------------------DROP TABLE IF EXISTS `modules`;CREATE TABLE `modules` ( `id` int(10) NOT NULL AUTO_INCREMENT, `module` varchar(30) DEFAULT NULL COMMENT '模块', `pid` int(10) DEFAULT NULL COMMENT '上一级id', `level` int(4) DEFAULT NULL COMMENT '级别', PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of modules-- ------------------------------ ------------------------------ Table structure for `users`-- ----------------------------DROP TABLE IF EXISTS `users`;CREATE TABLE `users` ( `user_code` varchar(10) NOT NULL COMMENT '用户代码', `user_name` varchar(40) DEFAULT NULL COMMENT '用户名', `user_password` varchar(100) DEFAULT NULL COMMENT '密码', `qq` varchar(15) DEFAULT NULL COMMENT 'qq', `msn` varchar(50) DEFAULT NULL COMMENT 'msn', `demo` varchar(100) DEFAULT NULL COMMENT '备注', `auth_code` text COMMENT '权限码', PRIMARY KEY (`user_code`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of users-- ----------------------------
1. 后端实现
项目中用SSM+freemarker框架，把权限封装成权限树的数据结构，然后转成json格式。
1) 展示层采用ztree树（setUserauthOnTree.html）
<!DOCTYPE html><html><head><#include "common/res.html" /><script src="${base.ctx}/js/layer-v2.1/laypage/laypage.js"></script><link href="${base.ctx}/js/layer-v2.1/laypage/skin/laypage.css" rel="stylesheet" type="text/css"/><script src="${base.ctx}/js/layer-v2.1/layer/layer.js"></script><!-- 引入树形菜单样式 --><link href="${base.ctx}/component/ztree/css/zTreeStyle/zTreeStyle.css" rel="stylesheet" type="text/css" /><script type="text/javascript" src="${base.ctx}/component/ztree/js/jquery.ztree.core-3.5.js"></script><script type="text/javascript" src="${base.ctx}/component/ztree/js/jquery.ztree.excheck-3.5.js"></script><style type="text/css">.blue-madison { border: 1px solid #7ca7cc; border-top: 0;}.caption { background-color: #578ebe; border-bottom: 0; padding: 0 10px; margin-bottom: 0; color: #fff;}</style></head><body> <div style="overflow-y:auto; width:400px; height:550px;"> <div id="ztree" > <ul id="treeDemo"></ul> </div> </div> <div> <div> <div align="center" style="margin-top: 5px"> <button type='button' onclick="editModle()">确定</button> <button type="button" id="cancel">关闭</button> </div> </div> </div> <script> $("document").ready(function() { $.ajax({ type : "post", url : "${base.ctx}/Setup/getUserRightMaskById", data:{"id":"${userId}"}, dataType : "json", success : function(result) { zTreeObj = $.fn.zTree.init($("#treeDemo"), setting,result.datas.data); zTreeObj.expandAll(true); }, error : function() { } }); }); //加载树 var zTreeObj; // zTree 的参数配置，深入使用请参考 API 文档（setting 配置详解） var setting = { view : { //dblClickExpand : false, showLine : true, //是否显示节点间的连线 }, check: { enable: true, //nocheckInherit: false, chkStyle: "checkbox", chkboxType: { "Y": "ps", "N": "ps" }, //autoCheckTrigger: true }, callback : { onCheck: zTreeOnCheck, } }; //checkbox点击的回调事件 function zTreeOnCheck(event, treeId, treeNode) { /* var zTree = $.fn.zTree.getZTreeObj("treeDemo"); var changedNodes = zTree.getChangeCheckedNodes(); for ( var i=0 ; i < changedNodes.length ; i++ ){ var treeNode = changedNodes[i]; } */ }; function editModle(){ var rootId=null; var midId=null; var minId=null; var treeObj = $.fn.zTree.getZTreeObj("treeDemo"); var nodes = treeObj.getCheckedNodes(); for(var i=0;i<nodes.length;i++){ if(nodes[i].level==0){ rootId=rootId+","+nodes[i].id; } if(nodes[i].level==1){ midId=midId+","+nodes[i].id; } if(nodes[i].level==2){ minId=minId+","+nodes[i].id; } } if(rootId!=null){ rootId=rootId.substring(5,rootId.length); } if(midId!=null){ midId=midId.substring(5,midId.length); } if(minId!=null){ minId=minId.substring(5,minId.length); } $.ajax({ type : "post", url : "${base.ctx}/Setup/updateUserRightMaskByAjax", dataType : "json", data:{"rootId":rootId,"midId":midId,"minId":minId,"userId":"${userId}"}, success : function(result) { if(result=="1"){ layer.msg("赋权成功！"); setTimeout(function(){top.dialog.get("set-dialog").close().remove();} , 600); } }, error : function() { layer.msg("系统错误，请联系管理员！"); } }); } //关闭 $("#cancel").click(function() { top.dialog.get("set-dialog").close().remove(); }); </script></body></html> 展示效果如下：
2) controller控制层用springmvc
在控制层把数据转成json格式，发到展示层。
/** * @fun 获取分店用户权限 * @author 皮锋 * @date 2016/8/25 * @param session * @param id * @param substoreid * @return */ @RequestMapping("getUserRightMaskById") @ResponseBody public Object getUserRightMaskById(HttpSession session,String id,String substoreid){ substoreid=StringUtils.isEmpty(substoreid)?String.valueOf(session.getAttribute("substoreid")):substoreid; //判断是酒店还是客栈 List<Map<String, Object>> versionsList=this.setupService.getHotelHotelVersions(substoreid); Object versions=versionsList.get(0).get("versions"); Map<String, Object> hotelMap=new HashMap<String, Object>(); if((null!=versionsList)&&(versionsList.size()!=0)){ //list不为空 if("complete".equals(versions)){ //酒店 //查询酒店权限树 hotelMap=this.rightMaskService.getUserRightMaskOnTree(substoreid,id,"complete"); }else if("simple".equals(versions)){ //客栈 //查询客栈权限树 hotelMap=this.rightMaskService.getUserRightMaskOnTree(substoreid,id,"simple"); } } Map<String, Object> resultMap = new HashMap<String, Object>(); resultMap.put("datas", hotelMap); return JSONObject.toJSONString(resultMap, SerializerFeature.WriteMapNullValue); } 3)service服务层把权限封装成满足ztree格式的树数据结构
/** * @fun 获取分店用户权限 * @author 皮锋 * @date 2016/8/25 * @param substoreid * @param id * @param versions * @return Map<String, Object> */ @Override public Map<String, Object> getUserRightMaskOnTree(String substoreid, String id, String versions) { Map<String, Object> userRightMask=this.iRightMaskDao.getUserRightMaskBySubAndId(substoreid,id); List<Map<String, Object>> listOne = new ArrayList<Map<String,Object>>(); List<Map<String, Object>> listTwo = new ArrayList<Map<String,Object>>(); //List<Map<String, Object>> listThree = new ArrayList<Map<String,Object>>(); List<Map<String, Object>> resultList = new ArrayList<Map<String, Object>>(); if(versions.equals("complete")){ //酒店 listOne = this.iRightMaskDao.getRightMaskOnHotelOne(); listTwo = this.iRightMaskDao.getRightMaskOnHotelTwo(); //listThree = this.iRightMaskDao.getRightMaskOnHotelThree(); packagingToTwoTree(resultList,listOne,listTwo,userRightMask); }else if(versions.equals("simple")){ //客栈 listOne = this.iRightMaskDao.getRightMaskOnTavernOne(); listTwo = this.iRightMaskDao.getRightMaskOnTavernTwo(); //listThree = this.iRightMaskDao.getRightMaskOnTavernThree(); packagingToTwoTree(resultList,listOne,listTwo,userRightMask); } Map<String, Object> map = new HashMap<String, Object>(); map.put("data", resultList); return map; }/** * @function 封装一个一级树 * @author 皮锋 * @date 2016/8/26 * @param resultList * @param listOne * @param authCode * @return void */ private void packagingToOneTree(List<Map<String, Object>> resultList, List<Map<String, Object>> listOne, Map<String, Object> authCode) { for (int i = 0; i < listOne.size(); i++) { Map<String, Object> rootMap = new HashMap<String, Object>(); rootMap.put("id", listOne.get(i).get("id")); rootMap.put("name", listOne.get(i).get("module")); if (validateRightMask(listOne, authCode, i) != -1) { rootMap.put("checked", true); } else { rootMap.put("checked", false); } resultList.add(rootMap); } } /** * @function 封装一个二级树 * @author 皮锋 * @date 2016/8/26 * @param resultList * @param listOne * @param listTwo * @param authCode * @return void */ private void packagingToTwoTree(List<Map<String, Object>> resultList, List<Map<String, Object>> listOne, List<Map<String, Object>> listTwo, Map<String, Object> authCode) { for (int i = 0; i < listOne.size(); i++) { List<Map<String, Object>> midList = new ArrayList<Map<String, Object>>(); for (int j = 0; j < listTwo.size(); j++) { if (listTwo.get(j).get("pid").toString() .equals(listOne.get(i).get("id").toString())) { List<Map<String, Object>> minlist = new ArrayList<Map<String, Object>>(); Map<String, Object> midMap = new HashMap<String, Object>(); midMap.put("id", listTwo.get(j).get("id")); midMap.put("name", listTwo.get(j).get("module")); midMap.put("children", minlist); if (validateRightMask(listTwo, authCode, j) != -1) { midMap.put("checked", true); } else { midMap.put("checked", false); } midList.add(midMap); } } Map<String, Object> rootMap = new HashMap<String, Object>(); rootMap.put("id", listOne.get(i).get("id")); rootMap.put("name", listOne.get(i).get("module")); rootMap.put("children", midList); if (validateRightMask(listOne, authCode, i) != -1) { rootMap.put("checked", true); } else { rootMap.put("checked", false); } resultList.add(rootMap); } } /** * @function 封装一个三级树 * @author 皮锋 * @date 2016/8/26 * @param resultList * @param listOne * @param listTwo * @param listThree * @param authCode * @return void */ private void packagingToThreeTree(List<Map<String, Object>> resultList, List<Map<String, Object>> listOne, List<Map<String, Object>> listTwo, List<Map<String, Object>> listThree, Map<String, Object> authCode) { for (int i = 0; i < listOne.size(); i++) { List<Map<String, Object>> midList = new ArrayList<Map<String, Object>>(); for (int j = 0; j < listTwo.size(); j++) { if (listTwo.get(j).get("pid").toString() .equals(listOne.get(i).get("id").toString())) { List<Map<String, Object>> minlist = new ArrayList<Map<String, Object>>(); for (int k = 0; k < listThree.size(); k++) { Map<String, Object> minMap = new HashMap<String, Object>(); if (listThree.get(k).get("pid").toString() .equals(listTwo.get(j).get("id").toString())) { minMap.put("id", listThree.get(k).get("id")); minMap.put("name", listThree.get(k).get("module")); if (validateRightMask(listThree, authCode, k) != -1) { minMap.put("checked", true); } else { minMap.put("checked", false); } minlist.add(minMap); } } Map<String, Object> midMap = new HashMap<String, Object>(); midMap.put("id", listTwo.get(j).get("id")); midMap.put("name", listTwo.get(j).get("module")); midMap.put("children", minlist); if (validateRightMask(listTwo, authCode, j) != -1) { midMap.put("checked", true); } else { midMap.put("checked", false); } midList.add(midMap); } } Map<String, Object> rootMap = new HashMap<String, Object>(); rootMap.put("id", listOne.get(i).get("id")); rootMap.put("name", listOne.get(i).get("module")); rootMap.put("children", midList); if (validateRightMask(listOne, authCode, i) != -1) { rootMap.put("checked", true); } else { rootMap.put("checked", false); } resultList.add(rootMap); } } /** * @function 验证authCode中是否有list中的权限码 * @author 皮锋 * @date 2016/8/26 * @param list * @param authCode * @param i * @return int */ private int validateRightMask(List<Map<String, Object>> list, Map<String, Object> authCode, int i) { String rightMask = authCode.get("auth_code") != null ? authCode.get( "auth_code").toString() : ""; if (!StringUtils.isEmpty(rightMask)) { rightMask = rightMask.replace(";", ","); String[] arry = rightMask.split(","); for (int j = 0; j < arry.length; j++) { String arryRightMask = arry[j]; String listRightMask = list.get(i).get("id").toString(); if (arryRightMask.equals(listRightMask)) { return 1; } } } else { return -1; } return -1; } 4) dao层查询数据库获得用户权限
a.在数据层按权限级别从modules表中分别拿出不同级别的权限
select id,module,pid,level from modules where level='0' select id,module,pid,level from modules where level='1' select id,module,pid,level from modules where level='2'
b.在users表中拿出某用户的所有权限（权限码）
select auth_code from users where user_code='pifeng'
c.保存权限时不同级别之间的权限码用英式分号“;”隔开，同一级别之间的权限码用英式逗号“,”隔开。例如：1,2,3,4,5,6,7,8,9,10,11,12;13,14,15,16,17,18,19,20,21,22,23,24,25,26,36,37,27,28,29,30,31,32,33,34,35,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,56,57,58,59,60,61,62,63,64,133,65,66,67,68,69,70,71,72,73,74,75,126,127,128,129,130,131,76,77,78,79,80,81,82,83,84,85,86,87,88,99,124,134,135,136,140,141,89,90,91,92,93,94,95,96,97,98,137,138,139,100,101,102,103,106,107,132,108,109,110,111,112,113,114,115,116,125,117,118,119,120,121,122
5)根据用户的权限码用freemarker标签控制页面功能模块是否显示
a.freemarker在xml文件中的配置
<bean id="freemarkerConfig" > <!--模板加载路径--> <property name="templateLoaderPath"> <value>/WEB-INF/ftl/</value> </property> <property name="freemarkerVariables"> <map> <entry key="xml_escape" value-ref="fmXmlEscape"/> </map> </property> <property name="freemarkerSettings"> <props> <prop key="tag_syntax">auto_detect</prop> <prop key="template_update_delay">0</prop> <prop key="default_encoding">UTF-8</prop> <prop key="output_encoding">UTF-8</prop> <prop key="locale">zh_CN</prop> <prop key="date_format">yyyy-MM-dd</prop> <prop key="time_format">HH:mm:ss</prop> <prop key="number_format">0.######</prop> <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop> <!--空值处理--> <prop key="classic_compatible">true</prop> <!--自动导入ftl模板，并以“base”别名作为命名空间--> <prop key="auto_import">inc/spring.ftl as base</prop> </props> </property> </bean> <bean id="fmXmlEscape"/> <bean id="freeMarkerViewResolver" > <property name="suffix" value=".html"/> <property name="cache" value="false"/> <property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView"/> <property name="contentType" value="text/html;charset=UTF-8"></property> <!--fixed Exception:Cannot expose session attribute 'substoreid' because of an existing model --> <property name="allowSessionOverride" value="true"/> <property name="exposeRequestAttributes" value="true"/> <property name="exposeSessionAttributes" value="true"/> <property name="exposeSpringMacroHelpers" value="true"/> <!-- 此变量值为pageContext.request, 页面使用方法：request.contextPath --> <property name="requestContextAttribute" value="request"/> <property name="attributesMap"> <map> <!-- 定义Freemarker方法的名称 --> <entry key="menucall"> <!-- 关联到我们之前定义的工具类 --> <bean /> </entry> </map> </property> </bean>
b.写个类继承TemplateMethodModel类，实现freemarker自定义方法，用于实现控制页面模块是否显示
登陆的时候把用户权限码存入session中，然后从session中取权限。下面是一个例子：
public class MenuFunction implements TemplateMethodModel{ @Override public Object exec(List arg0) throws TemplateModelException { int level = Integer.valueOf(arg0.get(0).toString()); //模块等级 int modelId=Integer.valueOf(arg0.get(1).toString()); //模块id int count=0; //记录session是否有此模块的权限码 HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); HttpSession session=request.getSession(); Object o = session.getAttribute("info"); if(o==null) return false; Info info = (Info) o; String authCode=info.getUser().getAuthCode(); //权限码 if(authCode.contains(";")){ String[] masks=authCode.split(";"); String[] m=masks[level].split(","); for (int i = 0; i < m.length; i++) { if(modelId==Integer.parseInt(m[i])){ ++count; }else{ count+=0; } } } if(count==0){ return false; }else{ return true; } }} c.在页面使用freemarker标签，控制模块的显示隐藏
Menucall中的两个参数，第一个为模块等级，第二个为模块的id
例如：
<#if menucall(1,122)> <li style="line-height: 250%"> <a href="#" id="booknew"><i></i>预订</a> </li></#if>
以上就是对用户的访问模块（权限）进行控制的大体实现。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持武林网。