java框架 初始化菜单树

@RequestMapping("/tree") @DoLog(cnContent = "权限树初始化", value = false) //@Permission(name = "login.tree")
    public String tree(HttpServletRequest request, HttpServletResponse response, ZTreeComm zTree) throws Exception {
        try {
            //1、获取登陆人的信息
            SysUser currentUser = getLoginUser(request);
            // 2.根据id获取权限列表，id为空时获取父权限列表（limit=roleid）
            List<ZTreeComm> tree = sysUserService.initAuthorityTree(zTree, currentUser);
            // 3.设置父节点
            List<ZTreeComm> votree = new ArrayList<ZTreeComm>();
            for (int i = 0; i < tree.size(); i++) {
                ZTreeComm ztree = (ZTreeComm) tree.get(i);
                int total = sysUserService.isParent(ztree);
                ztree.setIsParent(total != 0 ? Constants.IS_TRUE : Constants.IS_FALSE);
                votree.add(ztree);
            }
            //4、list排序。
            Collections.sort(votree, new Comparator<ZTreeComm>() {
                public int compare(ZTreeComm arg0, ZTreeComm arg1) {
                    return arg0.getSortNo().compareTo(arg1.getSortNo());
                }
            });
            return this.ajax(response, votree);
        } catch (Exception e) {
            this.logException(e);
            return this.ajax(response, "系统出现异常: [" + e.getMessage() + "] 请与管理员联系！");
        }
    }

@Override
    public List<ZTreeComm> initAuthorityTree(ZTreeComm ztree, SysUser sysUser) throws Exception {
        //1、获取角色字符串
        List<SysRole> sysRoles = sysUser.getSysRoles();
        String roleId = "";
        if (CollectionHelp.isNotBank(sysRoles)) {
            for (Object obj : sysRoles) {
                SysRole role = (SysRole) obj;
                if (Constants.STATUS_ACTIVE.equals(role.getStatus())) {
                    roleId = role.getRoleId() + "," + roleId;
                }
            }
        }
        ztree.setDiyParams(roleId); //因为ztree并没有roleid的属性，所以使用ztree的空属性
        //2、根据ztree，获取权限信息
        List<ZTreeComm> dataList = new ArrayList<ZTreeComm>();
        if (StringUtils.isEmpty(ztree.getId())) {
            //id为空,初始加载，查询根节点. where parent_dept_id is null
            dataList = sqlSessionTemplate.selectList(SecurityMgrConstants.ZTREE_COMMON_MAPPER_NAMESPACE + ".getAuthorityRoot", ztree);
        } else {
            //id不为空，为下拉，查询子节点 . where parent_dept_id =id
            dataList = sqlSessionTemplate.selectList(SecurityMgrConstants.ZTREE_COMMON_MAPPER_NAMESPACE + ".getAuthorityById", ztree);
        }
        return dataList;
    }

获取用户的所有角色，并将角色id放入字符串中并存入ZtreeComm类中的自定义属性中去DiyParams

ZtreeComm应该是对应Sys_Authority表，但是表中并没有对应roleid的字段，所以实体类中将roleid以字符串的形式存储到ztree中去

接下来判断是否是根节点，//id为空,初始加载，查询根节点，//id不为空，为下拉，查询子节点

<!-- 查询部门根节点 -->
    <select id="getAuthorityRoot" resultMap="authorityTreeResultMap" parameterType="ZTreeComm">
        SELECT * FROM SYS_AUTHORITY WHERE AUTHORITY_ID IN(
            SELECT AUTHORITY_ID FROM SYS_ROLE_AUTHORITY WHERE INSTR(#{diyParams},ROLE_ID)>0
        )
        AND PARENT_ID IS NULL AND AUTHORITY_TYPE=‘2‘
    </select>

AUTHORITY_TYPE 权限类型： 1：普通权限   2：菜单 3：报表

获取权限集合后，判断每个权限哪些是父节点

for (int i = 0; i < tree.size(); i++) {
                ZTreeComm ztree = (ZTreeComm) tree.get(i);
                int total = sysUserService.isParent(ztree);
                ztree.setIsParent(total != 0 ? Constants.IS_TRUE : Constants.IS_FALSE);
                votree.add(ztree);
            }

<!-- 查询查看是否为父节点 -->
    <select id="isParent" resultType="integer" parameterType="ZTreeComm">
        SELECT COUNT(*) FROM SYS_AUTHORITY WHERE PARENT_ID=#{id} AND AUTHORITY_TYPE=‘2‘
    </select>

并给每个ztree的isparent赋值并存入新的集合中去

对新的集合进行排序

//4、list排序。
            Collections.sort(votree, new Comparator<ZTreeComm>() {
                public int compare(ZTreeComm arg0, ZTreeComm arg1) {
                    return arg0.getSortNo().compareTo(arg1.getSortNo());
                }
            });