.netCore Api+Mvc 登录+权限+验证码，+依赖注入

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首先是接口interface

 string  Login( string Uname, string Upass);

然后就到了三层 dal

 public string Login(string Uname, string Upass)
        {
            var userinfo = $@"select [Uid]
      ,[Uname]
      ,[Upass]
      ,[Uphone]
      ,[Uemail]
      ,[Uage]
      ,[Usex]
      ,[salary]
      ,[Rid] from UserInfo where Uname='{Uname}'and Upass='{Upass}'";
            DataTable da = DBHelper.GetDataTable(userinfo);
            if (da != null && da.Rows != null && da.Rows.Count > 0)
            {
                var list = UtilityHelper.TableTolist<Userinfo>(da);
                return JsonConvert.SerializeObject(new { code = 100, msg = "登录成功", data = list });
            }
            else
            {
                return JsonConvert.SerializeObject(new { code = 500, msg = "登录失败，账号或密码错误!" });
            }
        }

然后就是控制器

        private IRegisterdal _dal;
        public LoginController(IRegisterdal dal)
        {
            _dal = dal;
        }
        public object Logins ( string Uname, string Upass)
        {
            return _dal.Login( Uname, Upass);
        }

跨域

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();
            services.AddSingleton<IGoodsdal,Goodsdal>();
            services.AddSingleton<IRegisterdal, Registerdal>();
            services.AddCors(options =>
            {
                // Policy 名稱 CorsPolicy 是自訂的，可以自己改
                options.AddPolicy("getd", policy =>
                {
                    // 設定允許跨域的來源，有多個的話可以用 `,` 隔開
                    policy.WithOrigins("http://localhost:", "http://localhost:")
                            .AllowAnyHeader()
                            .AllowAnyMethod()
                            .AllowCredentials();
                });
            });
            services.AddControllers();
           
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.UseCors("getd");
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseHttpsRedirection();

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
          
        }

Mvc 验证码加权限判断跳转到相应的页面

@{
    ViewData["Title"] = "Login";
}

<h1>Login</h1>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="~/lib/jquery/dist/jquery.js"></script>
    <meta charset="UTF-8">
</head>
<body>
    <table>
        <tr>
            <td>用户名:</td>
            <td><input id="TextName" type="text" /></td>
        </tr>
        <tr>
            <td>用户密码:</td>
            <td><input id="TextPass" type="password" /></td>
        </tr>
        <tr>
            <td>
                <div id="v_container" style="width: 200px;height: 50px;"></div>
            </td>
            <td>
                <input type="text" id="code_input" value="" placeholder="请输入验证码" />
            </td>
            @*<td>
                <button id="my_button">验证</button>
            </td>*@
        </tr>
        <tr>
            <td><input id="Button1" type="button" value="登录" /></td>
            <td><input id="Button2" type="button" value="注册"onclick=" location.href='/register/LoginAdd'" /></td>
        </tr>
    </table>
</body>
<script>
    !(function (window, document) {
        var size = 5;//设置验证码长度
        function GVerify(options) { //创建一个图形验证码对象，接收options对象为参数
            this.options = { //默认options参数值
                id: "", //容器Id
                canvasId: "verifyCanvas", //canvas的ID
                width: "100", //默认canvas宽度
                height: "30", //默认canvas高度
                type: "blend", //图形验证码默认类型blend:数字字母混合类型、number:纯数字、letter:纯字母
                code: "",
            }
            if (Object.prototype.toString.call(options) == "[object Object]") {//判断传入参数类型
                for (var i in options) { //根据传入的参数，修改默认参数值
                    this.options[i] = options[i];
                }
            } else {
                this.options.id = options;
            }
            this.options.numArr = "0,1,2,3,4,5,6,7,8,9".split(",");
            this.options.letterArr = getAllLetter();

            this._init();
            this.refresh();
        }
        GVerify.prototype = {
            /**版本号**/
            version: '1.0.0',

            /**初始化方法**/
            _init: function () {
                var con = document.getElementById(this.options.id);
                var canvas = document.createElement("canvas");
                this.options.width = con.offsetWidth > 0 ? con.offsetWidth : "100";
                this.options.height = con.offsetHeight > 0 ? con.offsetHeight : "30";
                canvas.id = this.options.canvasId;
                canvas.width = this.options.width;
                canvas.height = this.options.height;
                canvas.style.cursor = "pointer";
                canvas.innerHTML = "您的浏览器版本不支持canvas";
                con.appendChild(canvas);
                var parent = this;
                canvas.onclick = function () {
                    parent.refresh();
                }
            },

            /**生成验证码**/
            refresh: function () {
                this.options.code = "";
                var canvas = document.getElementById(this.options.canvasId);
                if (canvas.getContext) {
                    var ctx = canvas.getContext('2d');
                } else {
                    return;
                }

                ctx.textBaseline = "middle";

                ctx.fillStyle = randomColor(180, 240);
                ctx.fillRect(0, 0, this.options.width, this.options.height);

                if (this.options.type == "blend") { //判断验证码类型
                    var txtArr = this.options.numArr.concat(this.options.letterArr);
                } else if (this.options.type == "number") {
                    var txtArr = this.options.numArr;
                } else {
                    var txtArr = this.options.letterArr;
                }

                for (var i = 1; i <= size; i++) {
                    var txt = txtArr[randomNum(0, txtArr.length)];
                    this.options.code += txt;
                    ctx.font = randomNum(this.options.height / 2, this.options.height) + 'px SimHei'; //随机生成字体大小
                    ctx.fillStyle = randomColor(50, 160); //随机生成字体颜色
                    ctx.shadowOffsetX = randomNum(-3, 3);
                    ctx.shadowOffsetY = randomNum(-3, 3);
                    ctx.shadowBlur = randomNum(-3, 3);
                    ctx.shadowColor = "rgba(0, 0, 0, 0.3)";
                    var x = this.options.width / (size + 1) * i;
                    var y = this.options.height / 2;
                    var deg = randomNum(-30, 30);
                    /**设置旋转角度和坐标原点**/
                    ctx.translate(x, y);
                    ctx.rotate(deg * Math.PI / 180);
                    ctx.fillText(txt, 0, 0);
                    /**恢复旋转角度和坐标原点**/
                    ctx.rotate(-deg * Math.PI / 180);
                    ctx.translate(-x, -y);
                }
                /**绘制干扰线**/
                for (var i = 0; i < 4; i++) {
                    ctx.strokeStyle = randomColor(40, 180);
                    ctx.beginPath();
                    ctx.moveTo(randomNum(0, this.options.width), randomNum(0, this.options.height));
                    ctx.lineTo(randomNum(0, this.options.width), randomNum(0, this.options.height));
                    ctx.stroke();
                }
                /**绘制干扰点**/
                for (var i = 0; i < this.options.width / 4; i++) {
                    ctx.fillStyle = randomColor(0, 255);
                    ctx.beginPath();
                    ctx.arc(randomNum(0, this.options.width), randomNum(0, this.options.height), 1, 0, 2 * Math.PI);
                    ctx.fill();
                }
            },

            /**验证验证码**/
            validate: function (code) {
                var code = code.toLowerCase();
                var v_code = this.options.code.toLowerCase();
                if (code == v_code) {
                    return true;
                } else {
                    this.refresh();
                    return false;
                }
            }
        }
        /**生成字母数组**/
        function getAllLetter() {
            var letterStr = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z";
            return letterStr.split(",");
        }
        /**生成一个随机数**/
        function randomNum(min, max) {
            return Math.floor(Math.random() * (max - min) + min);
        }
        /**生成一个随机色**/
        function randomColor(min, max) {
            var r = randomNum(min, max);
            var g = randomNum(min, max);
            var b = randomNum(min, max);
            return "rgb(" + r + "," + g + "," + b + ")";
        }
        window.GVerify = GVerify;
    })(window, document);
</script>
<script>
    var verifyCode = new GVerify("v_container");
    document.getElementById("Button1").onclick = function () {
        var res = verifyCode.validate(document.getElementById("code_input").value);
        if (res) {
            alert("验证正确");
            var Uname = $("#TextName").val();
            var Upass = $("#TextPass").val();
            if (Uname == "") {
                alert("请输入用户名");
                return;
            }
            if (Upass == "") {
                alert("请输入用户密码");
                return;
                if (res == "") {
                    alert("请输入验证码");
                }
            }
            $.ajax({
                url: "https://localhost:44370/api/Login/Logins?Uname=" + Uname + "&Upass=" + Upass + "",
                type: "Get",
                dataType: "json",
                async: false,//设置ajax为同步请求模式  即必须ajax返回结果才可以继续往下执行
                success: function (data) {
                    console.log(data);
                    if (data != null) {
                        if (data.code == 100 && data.data != null) {
                            alert(data.msg + "，当前登录用户：" + data.data[0].Uname + ",当前登录Id:" + data.data[0].Rid)
                            if (data.data[0].Rid == 1) {
                                return location.href = '/register/LoginAdd';
                            }
                            else if (data.data[0].Rid == 2) {
                                return location.href = '/register/Uptregister';
                            }
                            else if (data.data[0].Rid == 3) {

                            }
                        }
                        else {
                            //登录失败 提示错误信息
                            alert(data.msg);
                        }
                    }
                }
            })

        } else {
            alert("验证码错误");
        }
    }
</script>
</html>

posted on 2020-06-28 16:51 喜欢桃子阅读(758) 评论(0) 收藏举报

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