LigurUi + spring mybatis mysql 菜单递归查询
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原理解释：
1.在mapper.xml中，使用resultMap指定映射到实体
2.实体中有一个属性为childern泛型为其本身的list集合
3.在resultMap中使用collection标签映射集合
4.collection标签中通过select属性调用查询语句获取list集合的值，调用时会使用属性column指定传入的参数！
在父子关系查询中，先查询出父，然后再根据parent_id去查询子
<collection property="children" column="sid" ofType="com.wuxing.loan.utils.MenuTree" javaType="java.util.ArrayList" select="findChildren"> </collection>详细介绍
一、项目环境
<spring.version>4.3.10.RELEASE</spring.version> <mybatis.version>3.2.2</mybatis.version> <mybatis-spring-version>1.2.0</mybatis-spring-version> <mysql-connector-java-version>5.1.38</mysql-connector-java-version>二、菜单表
建表语句：
CREATE TABLE `XD_MENU_RESOURCE` ( `SID` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键', `PARENT_SID` int(11) DEFAULT NULL COMMENT '父类菜单主键', `RELATION_CODE` varchar(256) DEFAULT NULL, `MENU_TYPE` char(1) DEFAULT NULL COMMENT '0：前台菜单；1：后台菜单', `RES_TYPE` char(1) DEFAULT NULL COMMENT '资源类型 0：分隔线；1：菜单；2：按钮；3：无连接菜单', `RES_CODE` varchar(64) DEFAULT NULL COMMENT '菜单编号', `RES_NAME` varchar(128) DEFAULT NULL COMMENT '菜单名称', `RES_URL` varchar(256) DEFAULT NULL COMMENT '菜单请求url', `RES_ICO` varchar(128) DEFAULT NULL COMMENT '菜单图标', `RES_LEVEL` int(11) DEFAULT NULL COMMENT '1:一级菜单 2:二级菜单 ', `SERIAL_NUM` int(11) DEFAULT NULL COMMENT '显示顺序', `IS_SHOW` char(1) DEFAULT NULL COMMENT '0：不显示；1：显示', `STATUS` char(1) DEFAULT NULL COMMENT '0：不可用；1：可用', `CREATE_DATE` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, `CREATE_BY` varchar(32) DEFAULT NULL, `UPDATE_DATE` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, `UPDATE_BY` varchar(32) DEFAULT NULL, `VERSIONES` int(11) DEFAULT NULL, PRIMARY KEY (`SID`)) ENGINE=InnoDB AUTO_INCREMENT=2038 DEFAULT CHARSET=utf8 COMMENT='资源';三、mapper.xml
<resultMap type="com.wuxing.loan.utils.MenuTree" id="menu_map"> <id column="sid" property="sid"/> <result column="PARENT_SID" property="parentSid"/> <result column="RELATION_CODE" property="relationCode"/> <result column="MENU_TYPE" property="menuType" /> <result column="RES_TYPE_DES" property="resTypeDes" /> <result column="RES_CODE" property="resCode" /> <result column="RES_NAME" property="resName" /> <result column="RES_URL" property="resUrl" /> <result column="RES_ICO" property="resIco" /> <result column="RES_LEVEL" property="resLevel" /> <result column="SERIAL_NUM" property="serialNum" /> <result column="IS_SHOW_DES" property="isShowDes" /> <result column="STATUS_DES" property="statusDes" /> <result column="CREATE_DATE_DES" property="createDateDes" /> <result column="CREATE_BY" property="createBy" /> <result column="UPDATE_DATE" property="updateDate" /> <result column="UPDATE_BY" property="updateBy" /> <result column="VERSIONES" property="versions" /> <collection property="children" column="sid" ofType="com.wuxing.loan.utils.MenuTree" javaType="java.util.ArrayList" select="findChildren"> </collection> </resultMap> <select id="findMenuByList" parameterType="Map" resultMap="menu_map"> SELECT T.SID, T.PARENT_SID, T.RELATION_CODE, T.RES_TYPE, CASE T.RES_TYPE WHEN '0' THEN '分割线' WHEN '1' THEN '菜单' WHEN '2' THEN '按钮' WHEN '3' THEN '引导菜单' ELSE '引导菜单' END AS RES_TYPE_DES, T.RES_CODE, T.RES_NAME, T.RES_URL, T.RES_ICO, T.RES_LEVEL, T.SERIAL_NUM, T.IS_SHOW, CASE T.IS_SHOW WHEN '1' THEN '是' WHEN '0' THEN '否' ELSE '否' END AS IS_SHOW_DES, T.STATUS, CASE T.STATUS WHEN '1' THEN '有效' WHEN '0' THEN '无效' ELSE '无效' END AS STATUS_DES, T.CREATE_DATE, IFNULL(DATE_FORMAT(create_date, '%Y-%m-%d %T'), '') AS CREATE_DATE_DES, T.CREATE_BY FROM XD_MENU_RESOURCE T WHERE 1=1 <if test="sid != null"> AND T.PARENT_SID = 1 </if> <if test ="resName != null"> AND T.RES_NAME like concat(concat('%',#{resName}),'%') </if> <if test="resUrl != null"> AND T.RES_URL like concat(concat('%',#{resUrl}),'%') </if> order by T.SERIAL_NUM ASC </select> <select id="findChildren" parameterType="int" resultMap="menu_map"> SELECT T.SID, T.PARENT_SID, T.RELATION_CODE, T.RES_TYPE, CASE T.RES_TYPE WHEN '0' THEN '分割线' WHEN '1' THEN '菜单' WHEN '2' THEN '按钮' WHEN '3' THEN '引导菜单' ELSE '引导菜单' END AS RES_TYPE_DES, T.RES_CODE, T.RES_NAME, T.RES_URL, T.RES_ICO, T.RES_LEVEL, T.SERIAL_NUM, T.IS_SHOW, CASE T.IS_SHOW WHEN '1' THEN '是' WHEN '0' THEN '否' ELSE '否' END AS IS_SHOW_DES, T.STATUS, CASE T.STATUS WHEN '1' THEN '有效' WHEN '0' THEN '无效' ELSE '无效' END AS STATUS_DES, T.CREATE_DATE, IFNULL(DATE_FORMAT(create_date, '%Y-%m-%d %T'), '') AS CREATE_DATE_DES, T.CREATE_BY FROM XD_MENU_RESOURCE T WHERE 1=1 AND T.PARENT_SID = #{sid} order by T.SERIAL_NUM ASC </select>四、java代码
1、实体
public class MenuTree { private int sid; private int parentSid; private String relationCode; private String menuType; private String resTypeDes; private String resCode; private String resName; private String resUrl; private String resIco; private int resLevel; private int serialNum; private String isShowDes; private String statusDes; private String createDateDes; private String createBy; private Date updateDate; private String updateBy; private int versions; //子菜单 private List<MenuTree> children; //省略get／set }2.controller层代码
@Controller@RequestMapping("/menu")public class MenuController extends BaseAction{@RequestMapping(value = "/list", method = RequestMethod.POST, produces = { "application/json;charset=UTF-8" }) @ResponseBody public String findPage(HttpServletRequest request,HttpServletResponse response){ return findByPage(request, new DoPage(){ @SuppressWarnings("rawtypes") public Page doInitPage(HttpServletRequest request, JSONObject jsonData, Page page) { Map<String, Object> params = CopyUtils.copyMap(request, "qm"); if(params.isEmpty()){ params.put("sid", 1); } List menuList = superService.selectByPage("sqlmapper.XdMenuMapper.findMenuByList", params, page); jsonData.put(ROWS, menuList); return page; } }); }}核心代码：
List menuList = superService.selectByPage("sqlmapper.XdMenuMapper.findMenuByList", params, page);五、前台ligurUi
<script language="javascript" type="text/javascript"> var grid = null; $(function() { grid = $("#maingrid").ligerGrid({ url: "${webPath}/menu/list",// TODO 注意 columns: [ {display: "操作",minWidth:80,width:80,align: 'center',isSort: false,isAllowHide: false, render:function(row,index){ var hrd = '<img class="grid_row_img" title="添加子菜单" onclick="addPage(null,'+row.sid+')" src="${webPath}/scripts/ligerUI/skins/icons/add.gif"/>'; hrd = hrd + '<img class="grid_row_img" title="修改" onclick="updatePage(null,'+row.sid+')" src="${webPath}/scripts/ligerUI/skins/icons/modify.gif"/>'; hrd = hrd + '<img class="grid_row_img" title="删除" onclick="deleteAjax(null,'+row.sid+')" src="${webPath}/scripts/ligerUI/skins/icons/delete.gif"/>'; return hrd; } }, //{display: "菜单名称",name: "resName",id:"resNameId",minWidth: 180,align: 'left',isSort: false,isAllowHide: false}, {display: "名称",id:"resNameId",minWidth:180,width:200,align: 'left',isSort: false,isAllowHide: false, render:function(row,index){ var hrd = ''; if(row.resIco && row.resIco.length>0){ hrd = '<img class="grid_row_img" style="margin:3px 0px -1px 0px;cursor: default;" src="${webPath}'+row.resIco+'"/>'+row.resName; }else{ hrd = row.resName; } return hrd; } }, {display: "编码",name: "resCode",minWidth:80,width:150,align: 'left',isSort: false,isAllowHide: false}, {display: "类别",name: "resTypeDes",minWidth:80,width:100,align: 'center',isSort: false,isAllowHide: false}, {display: "URL",name: "resUrl",minWidth:80,width:200,align: 'left',isSort: false,isAllowHide: false}, {display: "级别",name: "resLevel",minWidth: 60,align: 'center',isSort: false,isAllowHide: false}, {display: "序号",name: "serialNum",minWidth: 60,align: 'center',isSort: false,isAllowHide: false}, {display: "状态",name: "statusDes",minWidth: 60,align: 'center',isSort: false,isAllowHide: false}, {display: "创建人",name: "createBy",minWidth: 60,align: 'center',isSort: false,isAllowHide: false}, {display: "创建日期",name: "createDateDes",minWidth: 160,align: 'center',isSort: false,isAllowHide: false} ], toolbar: { items: [ {text: "添加根菜单",click: addPage,icon: "add"},{line: true}, {text: "修改",click: updatePage,icon: "modify"},{line: true}, {text: "删除",click: deleteAjax,icon: "delete"},{line: true}, {text: "导出Excel",click: exportData,icon: "excl"},{line: true} //{text: "打印",click: addPage,icon: "print"},{line: true} ] }, tree:{ columnId:'resNameId', idField:'sid', parentIDField:'parentSid' }, rowHeight:23, headerRowHeight:23, rownumbers:true, // 是否显示行序号 //frozenRownumbers:false, // 行序号是否在固定列中 checkbox:true, // 是否显示复选框 //checkboxColWidth:35, //isScroll:false, // 设置为false时将不会显示滚动条，高度自适应 selectRowButtonOnly:true, // 复选框模式时，是否只允许点击复选框才能选择行 allowAdjustColWidth:true,// Int 是否允许调整列宽 //delayLoad:true, // 初始化是是否不加载 //title:"信息列表：", //frozen:false, enabledSort:false, usePager:true, alternatingRow:true, // 是否附加奇偶行效果行 height:"98%", width:"100%", pageSize:100, pageSizeOptions: [5,10,15,20,30,100] }); });</scripts><table align="center" border="0" width="99%" id="listInfoId"><tr><td><div id="maingrid" style="margin: 0px; padding: 0;"/></td></tr><tr></table></body></html>
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