管理员管理：
新增管理员信息：
前端效果：
前端代码：
<body>
<div class="layui-fluid"><div class="layui-row"><div class="layui-form"><div class="layui-form-item"><label for="loginname" class="layui-form-label"><span class="x-red">*</span>登录名</label><div class="layui-input-inline"><input type="text" id="loginname" name="loginname" lay-verify="required|loginname" class="layui-input"></div></div><div class="layui-form-item"><label for="L_loginpassword" class="layui-form-label"><span class="x-red">*</span>设置登录密码</label><div class="layui-input-inline"><input type="password" id="L_loginpassword" name="loginpassword" lay-verify="required|loginpassword" class="layui-input"></div></div><div class="layui-form-item"><label for="L_confirmloginpassword" class="layui-form-label"><span class="x-red">*</span>确认密码</label><div class="layui-input-inline"><input type="password" id="L_confirmloginpassword" name="confirmloginpassword" lay-verify="required|confirmloginpassword" class="layui-input"></div></div><div class="layui-form-item"><label class="layui-form-label"></label><button class="layui-btn" lay-filter="submit" lay-submit="">保存</button></div></div></div>
</div><script>layui.use(['form', 'layer', 'upload'], function () {$ = layui.jquery;var form = layui.form,upload = layui.upload,layer = layui.layer;//自定义验证规则form.verify({loginname: function (value) {var code;$.ajax({url: "/admin/checkloginname",type: "GET",async: false, //关闭异步，当success返回结果后才执行ajax之后的内容data: {"loginname": value},success: function (s) {code = s;}});if (code != true) {return '登录名重复，请重新输入！';}},loginpassword: [/(.+){6,12}$/, '密码必须6到12位'],confirmloginpassword: function () {if ($('#L_confirmloginpassword').val() != $('#L_loginpassword').val()) {return '两次密码不一致';}}});//监听提交form.on('submit(submit)', function (data) {console.log(data.field);$.ajax({url: "/admin/addadmin",type: "post",data: data.field,success: function (s) {if (s == true) {layer.alert("新增管理员信息成功！", {icon: 6}, function () {parent.layer.closeAll();parent.location.href = "/admin/sysindex";});} else {layer.msg("登录名重复！", function () {});}},error: function () {layer.msg("接口异常!", function () {});}});});});
</script></body>后端代码：
AdminController：
/*** 新增管理员页面*/@GetMapping("/addadminpage")public String addadminpage() {return "admin/addadminpage";}/*** 新增管理员，判断新增管理员登录名是否重复*/@GetMapping("/checkloginname")@ResponseBodypublic boolean checkaddadminloginname(@RequestParam("loginname") String loginname) {return adminService.checkaddadminloginname(loginname);}/*** 新增管理员信息*/@PostMapping("/addadmin")@ResponseBodypublic boolean addadmin(@RequestParam("loginname") String loginname,@RequestParam("loginpassword") String loginpassword,@RequestParam("confirmloginpassword") String confirmloginpassword) {return adminService.addadmin(loginname,loginpassword);}AdminService：
/*** 新增管理员，判断新增管理员登录名是否重复*/boolean checkaddadminloginname(String loginname);/*** 新增管理员*/boolean addadmin(String loginname, String loginpassword);AdminServicelpml：
/*** 新增管理员，判断新增管理员登录名是否重复*/@Overridepublic boolean checkaddadminloginname(String loginname) {Admin admin = adminMapper.selectaddadminloginname(loginname);return admin==null;}/*** 新增管理员*/@Overridepublic boolean addadmin(String loginname, String loginpassword) {Admin admin=new Admin();admin.setGname(loginname);admin.setGpassword(loginpassword);Admin admin1=adminMapper.selectaddadminloginname(loginname);if(admin1==null)return adminMapper.addadmin(admin);else return false;AdminMapper：
/*** 新增管理员，判断新增管理员登录名是否重复*/Admin selectaddadminloginname(@Param("loginname")String loginname);/*** 新增管理员*/boolean addadmin(Admin admin);AdminMapper.xml：
<select id="selectaddadminloginname" resultType="com.homestay.pojo.Admin">select gname from adminwhere gname=#{loginname}</select><insert id="addadmin">insert into admin(gname,gpassword)values (#{gname,jdbcType=VARCHAR},#{gpassword,jdbcType=VARCHAR})</insert>测试：
登录名重复：
必填项为空：
两次密码不一样：
新增成功：
管理员分页查询：
前端效果：
前端代码：
<body>
<div class="layui-fluid"><div class="layui-row layui-col-space15"><div class="layui-col-md12"><div class="layui-card"><div class="layui-card-body "><form class="layui-form layui-col-space5"><div class="layui-inline layui-show-xs-block"><input type="text" name="dname" placeholder="管理员名称" autocomplete="off" class="layui-input"></div><div class="layui-inline layui-show-xs-block"><button class="layui-btn" lay-submit="" lay-filter="search_btn"><i class="layui-icon"></i></button></div><a class="layui-btn layui-btn-small" style="line-height:1.6em;margin-top:3px;float:right" onclick="reload();" title="刷新"><i class="layui-icon layui-icon-refresh" style="line-height:30px"></i></a></form></div><div class="layui-card-body "><table id="departmenList" lay-filter="departmenList"></table></div></div></div></div>
</div><script type="text/html" id="departmenListBar"><a class="layui-btn layui-btn-xs" lay-event="edit" >编辑</a>
<!-- <a class="layui-btn layui-btn-xs layui-btn-danger" lay-event="del">删除</a>-->
</script><script type="text/javascript" th:inline="javascript">layui.use(['form', 'layer', 'table'], function () {var form = layui.form,layer = layui.layer,$ = layui.jquery,table = layui.table;var tableIns = table.render({elem: '#departmenList',url: '/admin/pagequaryadmin',method: 'get',title: '管理员列表',page: true, //开启分页height: "full-110", //高度最大化减去差值110,高度将始终铺满// toolbar: true, //开启工具栏limit:10, //每页显示的条数limits: [5,10,20,30], //每页条数的选择项cols:[[{type: 'checkbox', field: 'gid', fixed: "left"},{field: 'gid', title: '管理员id', align: "center", unresize: "true"},{field: 'gname', title: '管理员名称', align: 'center', unresize: "true"},{field: 'gpassword',title: '管理员密码',align: 'center',unresize: true,hide: true // 关键设置：隐藏列},{title: '操作', align: "center", unresize: "true", toolbar: "#departmenListBar"}]]});//搜索form.on('submit(search_btn)', function (data) {tableIns.reload({url: '/admin/listbyname',where: data.field, page: {curr: 1 //重新从第 1 页开始}});return false;});//监听工具条table.on('tool(departmenList)', function (obj) {var data = obj.data, //获得当前行数据layEvent = obj.event; //获得 lay-event 对应的值（也可以是表头的 event 参数对应的值）switch (layEvent) {case 'del':layer.confirm('确定删除此管理员？', {icon: 3, title: '提示信息'}, function (index) {$.post("/admin/department/delete",{"gid": data.gid}, function (s) {layer.msg(s.msg);});layer.close(index);tableIns.reload();});break;// case 'edit':// xadmin.open('管理员编辑', '/admin/checkadminpasswordpage?gid=' + data.gid, 450, 300);// break;case 'edit':// 构建传递的参数var params = {gid: data.gid,gname: data.gname,gpassword: data.gpassword};// 将参数转换为查询字符串var queryString = $.param(params);// 打开弹窗layer.open({type: 2,title: '管理员编辑',area: ['450px', '300px'],content: '/admin/checkadminpasswordpage?' + queryString});break;default:break;}});});function reload() {$.get("/admin/reload", function (data) {if (data) {location.reload();} else {parent.location.reload();}});}
</script>
</body>后端代码：
AdminController：
/*** 编辑管理员页面*/@GetMapping("/updateadminpage")public String updateadminnpage() {return "admin/updateadminpage";}/*** 管理员分页查询* @return*/@GetMapping("/pagequaryadmin")@ResponseBodypublic Result pagequaryadmin(@RequestParam Map<String,Object> map) {int page = Integer.parseInt(map.get("page").toString());int limit = Integer.parseInt(map.get("limit").toString());int start=(page-1)*limit;return adminService.getadminList(start,limit);}AdminService：
/*** 管理员分页查询* @param start* @param limit* @return*/Result getadminList(int start, int limit);AdminServicelpml：
/*** 管理员分页查询* @param start* @param limit* @return*/@Overridepublic Result getadminList(int start, int limit) {int totaladmin=adminMapper.getTotaladmin();//获取管理员总数List<Admin> adminList=adminMapper.findadminList(start, limit);//获取管理员数据Result result = new Result();result.setCode(0);result.setMsg("查询成功");result.setCount(totaladmin);result.setData(adminList);return result;}AdminMapper：
/*** 获取管理员总数* @return*/int getTotaladmin();/*** 获取管理员数据* @param start* @param limit* @return*/List<Admin> findadminList(@Param("start")int start,@Param("limit") int limit);
AdminMappe.xml：
<select id="getTotaladmin" resultType="java.lang.Integer">select count(*) from admin</select><select id="findadminList" resultType="com.homestay.pojo.Admin">select<include refid="Base_Column_List"></include>from adminorder by gidlimit #{start},#{limit}</select>测试：
选择5页：
选择10页：
搜索框模糊查询：
后端代码：
AdminController：
/*** 模糊查询* @param map* @return*/@GetMapping("/listbyname")@ResponseBodypublic Result listbyname(@RequestParam Map<String,Object> map) {int page = Integer.parseInt(map.get("page").toString());int limit = Integer.parseInt(map.get("limit").toString());int start=(page-1)*limit;String dname=map.get("dname").toString();return adminService.listbyname(start,limit,dname);}AdminService：
/*** 模糊查询* @param start* @param limit* @param dname* @return*/Result listbyname(int start, int limit, String dname);AdminServicelpml：
/*** 模糊查询* @param start* @param limit* @param dname* @return*/@Overridepublic Result listbyname(int start, int limit, String dname) {int totaladmin=adminMapper.getTotaladminbyname(dname);//获取管理员总数List<Admin> adminList=adminMapper.findadminListbyname(start, limit,dname);//获取管理员数据Result result = new Result();result.setCode(0);result.setMsg("查询成功");result.setCount(totaladmin);result.setData(adminList);return result;}AdminMapper：
/*** 模糊查询获取总数* @param dname* @return*/int getTotaladminbyname(@Param("dname") String dname);/*** 模糊查询* @param start* @param limit* @param dname* @return*/List<Admin> findadminListbyname(@Param("start")int start,@Param("limit") int limit, @Param("dname") String dname);
AdminMapper.xml：
<select id="getTotaladminbyname" resultType="java.lang.Integer">select count(*)from adminwhere gname like concat('%',#{dname},'%')</select><select id="findadminListbyname" resultType="com.homestay.pojo.Admin">select <include refid="Base_Column_List"></include>from adminwhere gname like concat('%',#{dname},'%')order by gidlimit #{start},#{limit}</select>测试：
编辑、删除管理员：
需要输入该管理员密码才能进行编辑信息，包括删除该管理员
前端效果：
检查管理员密码：
密码正确后：
前端代码：
检查密码页面：
<body>
<div class="layui-fluid"><div class="layui-row"><div class="layui-form"><div class="layui-form-item"><label for="gid" class="layui-form-label"><span class="x-red">*</span>管理员id: </label><div class="layui-input-inline"><input type="text" id="gid" name="gid" class="layui-input" readonly="readonly" th:value="${session.gid}"></div></div><div class="layui-form-item"><label for="adminpassword" class="layui-form-label"><span class="x-red">*</span>输入管理员密码</label><div class="layui-input-inline"><input type="password" id="adminpassword" name="adminpassword" lay-verify="required" class="layui-input"></div></div><div class="layui-form-item"><label class="layui-form-label"></label><button class="layui-btn" lay-filter="submit" lay-submit="">确定</button></div></div></div>
</div><script>layui.use(['form', 'layer', 'jquery'], function () {var form = layui.form,layer = layui.layer,$ = layui.jquery;form.on('submit(submit)', function (data) {var loadingIndex = layer.load(1);$.ajax({url: "/admin/checkadminpassword",type: "POST",data: data.field,dataType: "json",success: function (response) {layer.close(loadingIndex);// 调试输出console.log('验证响应:', response);// 兼容两种响应格式if ((response && response.success) || response === true) {layer.msg("验证成功", {icon: 1, time: 1000}, function() {// 解决方案1：直接使用top窗口的xadmintop.xadmin.open('修改管理员', '/admin/updateadmin');// 解决方案2：先关闭当前弹窗再打开新窗口var index = parent.layer.getFrameIndex(window.name);parent.layer.close(index);setTimeout(function() {top.xadmin.open('修改管理员', '/admin/updateadmin',300,300);}, 300);});} else {layer.msg(response.message || "密码错误");}},error: function(xhr) {layer.close(loadingIndex);console.error('请求失败:', xhr.responseText);layer.msg("请求失败: " + (xhr.responseJSON?.message || xhr.statusText));}});return false;});});
</script></body>编辑页面：
<body >
<div class="layui-fluid" style="padding: 65px;"><div class="layui-row"><div class="layui-form"><div class="layui-form-item"><label for="gid" class="layui-form-label"><span class="x-red">*</span>管理员id: </label><div class="layui-input-inline"><input type="text" id="gid" name="gid" class="layui-input" readonly="readonly" th:value="${session.gid}"></div></div><div class="layui-form-item"><label for="newadminname" class="layui-form-label" >新登录名</label><div class="layui-input-inline"><input type="text" id="newadminname" name="newadminname" class="layui-input" th:value="${session.adminname}"></div></div><div class="layui-form-item"><label for="L_newPwd" class="layui-form-label"><span class="x-red">*</span>新密码</label><div class="layui-input-inline"><input type="password" id="L_newPwd" name="newgpassword" lay-verify="required|newgpassword" class="layui-input" th:value="${session.adminpassword}"></div><div class="layui-form-mid layui-word-aux">6到16个字符</div></div><div class="layui-form-item"><label for="L_confirmPwd" class="layui-form-label"><span class="x-red">*</span>确认密码</label><div class="layui-input-inline"><input type="password" id="L_confirmPwd" name="confirmPwd" lay-verify="required|confirmPwd" class="layui-input"></div></div><div class="layui-form-item"><label class="layui-form-label"></label><button class="layui-btn" lay-filter="submit" lay-submit="">保存</button><a class="layui-btn layui-btn-xs layui-btn-danger" lay-event="del">删除管理员</a></div></div></div>
</div><script>layui.use(['form', 'layer', 'upload'], function () {$ = layui.jquery;var form = layui.form,upload = layui.upload,layer = layui.layer;// 删除按钮点击事件$('.layui-btn-danger').on('click', function() {layer.confirm('确定删除此管理员？', {icon: 3, title: '提示信息'}, function (index) {$.post("/admin/delete",{"gid": $('#gid').val()},function (success) { // 直接接收布尔值if (success) {layer.msg('删除成功', {icon: 1});// 删除成功后刷新父窗口setTimeout(function() {xadmin.father_reload();}, 1000);} else {layer.msg('删除失败', {icon: 2});}});layer.close(index);});return false; // 阻止默认行为});//自定义验证规则form.verify({newgpassword: [/(.+){6,12}$/, '密码必须6到12位'],confirmPwd: function () {if ($('#L_newPwd').val() != $('#L_confirmPwd').val()) {return '两次密码不一致';}}});//监听提交form.on('submit(submit)', function (data) {console.log(data.field);$.ajax({url: "/admin/updateadmininformation",type: "post",data: data.field,success: function (s) {if (s == true) {layer.alert("修改成功！", {icon: 6}, function () {parent.layer.closeAll();});} else {layer.msg("登录名重复，修改失败！", function () {});}},error: function () {layer.msg("接口异常!", function () {});}});});});
</script>
</body>后端代码：
AdminController：
/*** 编辑管理员，检查密码页面*/@GetMapping("/checkadminpasswordpage")public String checkadminpasswordpage(@RequestParam("gid") String gid,@RequestParam("gname")String gname,@RequestParam("gpassword")String gpassword, HttpSession session) {session.setAttribute("gid",gid);session.setAttribute("adminname",gname);session.setAttribute("adminpassword",gpassword);return "admin/updatecheckadminpasswordpage";}/*** 检查密码*/@PostMapping("/checkadminpassword")@ResponseBodypublic boolean checkadminpassword(@RequestParam("gid") String gid,@RequestParam("adminpassword") String adminpassword) {return adminService.checkadminpassword(gid,adminpassword);}/*** 跳转修改弹窗* @return*/@GetMapping("/updateadmin")public String updateadmin() {return "admin/updateadmin";}/*** 修改管理员信息* @param gid* @param newgpassword* @param newadminname* @return*/@PostMapping("/updateadmininformation")@ResponseBodypublic boolean updateadmininformation(@RequestParam("gid")String gid,@RequestParam("newgpassword")String newgpassword,@RequestParam("newadminname")String newadminname ) {return adminService.updateadmininformation(gid,newgpassword,newadminname);}/*** 删除管理员*/@PostMapping("/delete")@ResponseBodypublic boolean delete(@RequestParam("gid")String gid) {return adminService.deleteadmin(gid);}@GetMapping("/reload")@ResponseBodypublic boolean reload() {return true;}AdminService：
/*** 编辑管理员时，检查密码* @param gid* @param adminpassword* @return*/boolean checkadminpassword(String gid, String adminpassword);/*** 修改管理员信息* @param gid* @param newgpassword* @param newadminname* @return*/boolean updateadmininformation(String gid, String newgpassword, String newadminname);/*** 删除管理员* @param gid* @return*/boolean deleteadmin(String gid);AdminServicelpml：
/*** 编辑管理员时，检查密码* @param gid* @param adminpassword* @return*/@Overridepublic boolean checkadminpassword(String gid, String adminpassword) {String gpassword=adminMapper.selectaddminpassword(gid);if(adminpassword.equals(gpassword))return true;else return false;}/*** 修改管理员信息* @param gid* @param newgpassword* @param newadminname* @return*/@Overridepublic boolean updateadmininformation(String gid, String newgpassword, String newadminname) {//检查登录名是否重复try {int count=adminMapper.countadminid(gid,newadminname);if(count>0){throw new RuntimeException("登录名重复");}}catch (RuntimeException e) {return false;}//没有重复修改信息adminMapper.updateadmininformation(gid,newadminname,newgpassword);return true;
}/*** 删除管理员* @param gid* @return*/@Overridepublic boolean deleteadmin(String gid) {return adminMapper.deleteadmin(gid);}
AdminMapper：
/*** 编辑管理员时，检查密码是否正确* @param gid* @return*/String selectaddminpassword(String gid);/*** 检查登录名是否重复* @param gid* @param newadminname* @return*/int countadminid(@Param("gid") String gid,@Param("newadminname") String newadminname);/*** 修改信息* @param gid* @param newadminname* @param newgpassword*/void updateadmininformation(@Param("gid") String gid,@Param("newadminname") String newadminname,@Param("newgpassword") String newgpassword);/*** 删除管理员* @param gid* @return*/boolean deleteadmin(String gid);
AdminMapper.xml：
<select id="selectaddminpassword" resultType="java.lang.String">select gpasswordfrom adminwhere gid=#{gid}</select><select id="countadminid" resultType="java.lang.Integer">select count(*)from adminwhere gid!=#{gid} and gname=#{newadminname}</select><update id="updateadmininformation">update adminsetgpassword=#{newgpassword},gname=#{newadminname}where gid=#{gid}</update><delete id="deleteadmin">delete from adminwhere gid = #{gid,jdbcType=INTEGER}</delete>测试：
检查密码错误：
正确后:
提示：
密码两次不一样
登录名重复：
删除：
 信号量初始化)
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的时间复杂度快速求区间和))
