ASP.NET MVC5+EF6+EasyUI 后台管理系统(33)-MVC 表单验证
注:本节阅读需要有MVC 自定义验证的基础,否则比较吃力
一直以来表单的验证都是不可或缺的,微软的东西还是做得比较人性化的,从webform到MVC,都做到了双向验证
单单的用js实现的前端验证是极其不安全的,所以本次我们来看看MVC上的自带的注解验证,自定义验证
同样的MVC提供了一系列内置的数据验证注解
- 不为空验证 [Required(ErrorMessage = "不能为空")]
- 长度验证 [StringLength(10, MinimumLength = 2)]
- 取值范围 [Range(1, 3)]
- 类型验证 [DataType(DataType.Date)]
- 正则表达 [RegularExpression(@”[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+/.[A-Za-z]{2,4}”)] Email Demo
- 远程验证 [Remote("CheckUserNameExists", "ValidationDemo", ErrorMessage = "用户名已存在")]
- 请求验证 [AllowHtml] 允许传入HTML
- 等等.....
MVC3项目模板自带的登录模型类如下:
public class LogOnModel { [Required] [Display(Name = "User name")] public string UserName { get; set; } [Required] [DataType(DataType.Password)] [Display(Name = "Password")] public string Password { get; set; } [Display(Name = "Remember me?")] public bool RememberMe { get; set; } }
MVC3自带的模板项目中已经有了:
<add key="ClientValidationEnabled" value="true"/>
<add key="UnobtrusiveJavaScriptEnabled" value="true"/>
然后在被验证的View页面上要参加如许两个JavaScript,重视,他们是依附于JQuery的:
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
验证消息的显示有两种,一种是ValidationSummary,它可以显示一份验证消息的汇总,包含从后台Action里返回的消息。
@Html.ValidationSummary(true, "Login was unsuccessful. Please correct the errors and try again.")
另一种是Model中各属性对应HTML控件的验证消息:
@Html.ValidationMessageFor(m => m.UserName)
所以要前端代码有验证效果必须引入jquery库
但是往往系统自带的验证是远远满足不了我们的,我们需要更加灵活的封装,不可能我要验证数字是否填了 0-9之间都要去写一个表表达式吧,还好官方也灵活的提供了扩展,自定义验证。
自定义验证我就不多说了,在园里搜索一下就很多原理及编写方法。这里我为大家共享一个常用的自定验证
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ComponentModel.DataAnnotations; using System.Web.Mvc; using System.Globalization; using System.Web.Security; using System.Text.RegularExpressions; namespace App.Models { /** 使用说明 * 继承 ValidationAttribute 抽象类,重写 IsValid() 方法,以实现服务端验证 * 实现 IClientValidatable 接口的 GetClientValidationRules() 方法,以实现客户端验证 * * 1. [IntRangeExpression(18, 30)] 数字在18与30之间,可以不填写,但填写就进入验证 * 2. [MaxWordsExpression(50)] 字符数在不能大50,可以不填写,但填写就进入验证 * 3. [NotNullExpression] 验证是否为空且 调用 * 4. [DateExpression] 是否是日期格式:2012-10-1 * 5. [IsCharExpression] 只能是数字,字母,下划线,中划线组成,可以不填写 * 6. [ChinaCharExpression] 只能输入汉字,可以不填写 * 7. [NotEqualExpression("abcd")] 不能等于指定的值,可以不填写:如不能等于abcd * 8. [ContainExpression("abc")] 验证是否包含指定字符串,可以不填写:如必须包含abc * 9. [NotContainExpression("abc")] 验证不能指定字符串,可以不填写,如不能含有abc *10. [IsIntegerEpression] 验证是否是数字格式 可以不填写,可以为任意整数 1,-5 *11. [IsPositiveIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意正整数 25 *12. [IsNegativeIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意负整数 -25 *13. [IsDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意浮点数 12.12,12,-12.12 *14. [IsPositiveDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意正浮点数 1.4 *15. [IsNegativeDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意负浮点数 -1.2 *16. [EmailExpression] 验证是否是Email *17. [PhoneExpression] 验证是否是中国电话号码 如:0769-222222-222 正确格式为:"XXX-XXXXXXX"、"XXXX- XXXXXXXX"、"XXX-XXXXXXX"、"XXX-XXXXXXXX"、"XXXXXXX"和"XXXXXXXX"。 *18. [SiteExpression] 验证是否是一个完整的网址 如:www.163.com *19. [IsNumberExpression] 验证是否是数字格式 可以不填写,可以为任意数字 * * * 组合使用演示 * [DisplayName("姓名")] 名称 * [NotNullExpression] 不能为空 * [MaxWordsExpression(50)] 最多50个字符,25个汉字 * [IsCharExpression] 只能由数字,字母,中划线,下划线组成(一般用于验证ID) * [NotEqualExpression("admin")] 不能包含有admin字符串 * public string Id { get; set; } * * 数字判断演示 * [IsNumberExpression] 可以不填写,填写判断是否是数字 * [DisplayName("代号")] * public int? age { get; set; } * 非空字断使用 * //[Required(ErrorMessageResourceType = typeof(ErrorRs), ErrorMessageResourceName = "IsNumberExpression")] * 或//[Required(ErrorMessage="必须填写这个字段")] 来覆盖本地化 如public int age; int?为可空字端 **/ /// <summary> /// [IntRangeExpression(18, 30)] 数字在18与30之间,可以不填写,但填写就进入验证 /// </summary> public class IntRangeExpressionAttribute : ValidationAttribute, IClientValidatable { long minMum { get; set; } long maxMum { get; set; } public IntRangeExpressionAttribute(long minimum, long maximum) { minMum = minimum; maxMum = maximum; } public override bool IsValid(object value) { if (value == null) return true; long intValue = Convert.ToInt64(value); return intValue >= minMum && intValue <= maxMum; } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须在{1}和{2}之间", name, minMum, maxMum); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule validationRule = new ModelClientValidationRule() { ValidationType = "isinteger", ErrorMessage = FormatErrorMessage(metadata.DisplayName) }; // 向客户端验证代码传递参数 validationRule.ValidationParameters.Add("param1", minMum); validationRule.ValidationParameters.Add("param2", maxMum); yield return validationRule; } } /// <summary> /// [MaxWordsExpression(50)]字符数在不能大50,可以不填写,但填写就进入验证 /// </summary> public class MaxWordsExpressionAttribute : ValidationAttribute, IClientValidatable { int maxStr { get; set; } public MaxWordsExpressionAttribute(int maximum) { maxStr = maximum; } public override bool IsValid(object value) { if (value == null) return true; string valueAsString = value.ToString(); return (Encoding.Default.GetByteCount(valueAsString) <= maxStr); } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}最多{1}个汉字,{2}个字符", name, maxStr / 2, maxStr); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule validationRule = new ModelClientValidationRule() { ValidationType = "maxwords", ErrorMessage = FormatErrorMessage(metadata.DisplayName) }; validationRule.ValidationParameters.Add("param", maxStr); yield return validationRule; } } /// <summary> /// [MinWordsExpression(50)]字符数在不能少于50个字符,可以不填写,但填写就进入验证 /// </summary> public class MinWordsExpressionAttribute : ValidationAttribute, IClientValidatable { int minStr { get; set; } public MinWordsExpressionAttribute(int minimum) { minStr = minimum; } public override bool IsValid(object value) { if (value == null) return true; string valueAsString = value.ToString(); return (Encoding.Default.GetByteCount(valueAsString) >= minStr); } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}最少{1}个字符", name, minStr); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule validationRule = new ModelClientValidationRule() { ValidationType = "minwords", ErrorMessage = FormatErrorMessage(metadata.DisplayName) }; validationRule.ValidationParameters.Add("param", minStr); yield return validationRule; } } /// <summary> /// [NotNullExpression] 验证是否为空且不能有空格 调用 /// </summary> public class NotNullExpressionAttribute : ValidationAttribute, IClientValidatable { static string DispalyName = ""; public NotNullExpressionAttribute() : base("{0}必须填写") { } public override string FormatErrorMessage(string name) { return String.Format(name, DispalyName); } public override bool IsValid(object value) { if (value == null) { return false; } string valueAsString = value.ToString(); bool result = !string.IsNullOrEmpty(valueAsString); return result; } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { DispalyName = metadata.DisplayName; return new[]{ new ModelClientValidationRequiredRule(FormatErrorMessage("{0}必须填写")) }; } } /// <summary> /// [DateExpression] 是否是日期格式:2012-10-1 /// </summary> public class DateExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"((^((1[8-9]\d{2})|([2-9]\d{3}))([-\/\._])(10|12|0?[13578])([-\/\._])(3[01]|[12][0-9]|0?[1-9])$)|(^((1[8-9]\d{2})|([2-9]\d{3}))([-\/\._])(11|0?[469])([-\/\._])(30|[12][0-9]|0?[1-9])$)|(^((1[8-9]\d{2})|([2-9]\d{3}))([-\/\._])(0?2)([-\/\._])(2[0-8]|1[0-9]|0?[1-9])$)|(^([2468][048]00)([-\/\._])(0?2)([-\/\._])(29)$)|(^([3579][26]00)([-\/\._])(0?2)([-\/\._])(29)$)|(^([1][89][0][48])([-\/\._])(0?2)([-\/\._])(29)$)|(^([2-9][0-9][0][48])([-\/\._])(0?2)([-\/\._])(29)$)|(^([1][89][2468][048])([-\/\._])(0?2)([-\/\._])(29)$)|(^([2-9][0-9][2468][048])([-\/\._])(0?2)([-\/\._])(29)$)|(^([1][89][13579][26])([-\/\._])(0?2)([-\/\._])(29)$)|(^([2-9][0-9][13579][26])([-\/\._])(0?2)([-\/\._])(29)$))"; public DateExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); string valueAsString = value.ToString(); string dtvalue; if (value.ToString().IndexOf(" ") > 0) { dtvalue = valueAsString.Replace("/", "-").Substring(0, valueAsString.IndexOf(" ")); } else { dtvalue = valueAsString.Replace("/", "-"); } Match mch = reg.Match(dtvalue); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是日期格式:2012-10-10", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsCharExpression] 只能是数字,字母,下划线,中划线组成,可以不填写 /// </summary> public class IsCharExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^[0-9A-Za-z_-]{0,}$"; public IsCharExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}由字母,数字,划线,划线组成", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [ChinaCharExpression] 只能输入汉字,可以不填写 /// </summary> public class ChinaCharExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^[\u4e00-\u9fa5]{0,}$"; public ChinaCharExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}只能填写汉字", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [NotEqualExpression("abcd")],不能等于指定的值,可以不填写:如不能等于abcd /// </summary> public class NotEqualExpressionAttribute : ValidationAttribute, IClientValidatable { string InputString { get; set; } public NotEqualExpressionAttribute(string inputString) { InputString = inputString; } public override bool IsValid(object value) { if (value == null) return true; string valueAsString = value.ToString(); return (valueAsString != InputString); } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}不能等同于{1}", name, InputString); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule validationRule = new ModelClientValidationRule() { ValidationType = "notequal", ErrorMessage = FormatErrorMessage(metadata.DisplayName) }; validationRule.ValidationParameters.Add("param", InputString); yield return validationRule; } } /// <summary> /// [ContainExpression("abc")] 验证是否包含指定字符串,可以不填写:如必须包含abc /// </summary> public class ContainExpressionAttribute : ValidationAttribute, IClientValidatable { string InputString { get; set; } public ContainExpressionAttribute(string inputString) { InputString = inputString; } public override bool IsValid(object value) { if (value == null) return true; string valueAsString = value.ToString(); return (valueAsString.Contains(InputString)); } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须不能包含字符串:{1}", name, InputString); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule validationRule = new ModelClientValidationRule() { ValidationType = "contain", ErrorMessage = FormatErrorMessage(metadata.DisplayName) }; validationRule.ValidationParameters.Add("param", InputString); yield return validationRule; } } /// <summary> /// [NotContainExpression("abc")],验证不能指定字符串,可以不填写,如不能含有abc /// </summary> public class NotContainExpressionAttribute : ValidationAttribute, IClientValidatable { string InputString { get; set; } public NotContainExpressionAttribute(string inputString) { InputString = inputString; } public override bool IsValid(object value) { if (value == null) return true; string valueAsString = value.ToString(); return (!valueAsString.Contains(InputString)); } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须不能包含字符串:{1}", name, InputString); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule validationRule = new ModelClientValidationRule() { ValidationType = "notcontain", ErrorMessage = FormatErrorMessage(metadata.DisplayName) }; validationRule.ValidationParameters.Add("param", InputString); yield return validationRule; } } /// <summary> /// [IsNumberExpression] 验证是否是数字格式,可以不填写,必须是任意数字 /// </summary> public class IsNumberExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^[-]?\d+(\.\d+)?$"; public IsNumberExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); string input = value.ToString(); Match mch = reg.Match(input); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个数字", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意整数 -1,1 /// </summary> public class IsIntegerExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^-?\d+$"; public IsIntegerExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个整数", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsPositiveIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意正整数 25 /// </summary> public class IsPositiveNumberExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^\d+$"; public IsPositiveNumberExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个正整数", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsNegativeIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意负整数 -25 /// </summary> public class IsNegativeNumberExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^-?\d+$"; public IsNegativeNumberExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个负整数", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意浮点数 12.12,12,-12.12 /// </summary> public class IsDecimalExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^[-]?\d+(\.\d+)?$"; public IsDecimalExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个浮点数", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsPositiveDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意正浮点数 1.4 /// </summary> public class IsPositiveDecimalExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^\d+(\.\d+)?$"; public IsPositiveDecimalExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个浮正点数", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [IsNegativeDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意负浮点数 -1.2 /// </summary> public class IsNegativeDecimalExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^-\d+(\.\d+)?$"; public IsNegativeDecimalExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是一个浮负点数", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [EmailExpression] 验证是否是Email /// </summary> public class EmailExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$"; public EmailExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是邮箱地址", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// [PhoneExpression] 验证是否是中国电话号码 如:0769-222222-222 正确格式为:"XXX-XXXXXXX"、"XXXX- XXXXXXXX"、"XXX-XXXXXXX"、"XXX-XXXXXXXX"、"XXXXXXX"和"XXXXXXXX"。 /// </summary> public class PhoneExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"^((0\d{2,5}-)|\(0\d{2,5}\))?\d{7,8}(-\d{3,4})?$"; public PhoneExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}不是正确的电话号码,如:0769-2222222", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } /// <summary> /// 验证是否是网址 调用[SiteExpression] /// </summary> public class SiteExpressionAttribute : RegularExpressionAttribute, IClientValidatable { static string regStr = @"http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"; public SiteExpressionAttribute() : base(regStr) { } public override bool IsValid(object value) { if (value == null) return true; Regex reg = new Regex(regStr); Match mch = reg.Match(value.ToString()); if (mch.Success) { return true; } else { return false; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentCulture, "{0}必须是网址,如:http://www.google.com", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var name = metadata.GetDisplayName(); var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern); yield return rule; } } } /* 双向验证,请加入以下代码 // [IntRangeExpression(18, 30)] 数字在18与30之间,可以不填写,但填写就进入验证 jQuery.validator.addMethod('isinteger', function (value, element, params) { if (value >= parseInt(params['param1']) && value <= parseInt(params['param2'])) return true; return false; }); jQuery.validator.unobtrusive.adapters.add('isinteger', ['param1', 'param2'], function (options) { options.rules['isinteger'] = { param1: options.params.param1, param2: options.params.param2 }; options.messages['isinteger'] = options.message; } ); // [MaxWordsExpression(50)]字符数在不能大50,可以不填写,但填写就进入验证 jQuery.validator.addMethod('checkMaxWords', function (value, element, param) { if (strLen(value) > param) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('maxwords', ['param'], function (options) { options.rules['checkMaxWords'] = { param: options.params.param }; options.messages['checkMaxWords'] = options.message; } ); // [MinWordsExpression(50)]字符数在不能shaoyu 50,可以不填写,但填写就进入验证 jQuery.validator.addMethod('checkMinWords', function (value, element, param) { if (strLen(value) < param) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('minwords', ['param'], function (options) { options.rules['checkMinWords'] = { param: options.params.param }; options.messages['checkMinWords'] = options.message; } ); // [NotEqualExpression("abcd")],不能等于指定的值,可以不填写:如不能等于abcd jQuery.validator.addMethod('checkNotEqual', function (value, element, param) { if (value == param) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('notequal', ['param'], function (options) { options.rules['checkNotEqual'] = { param: options.params.param }; options.messages['checkNotEqual'] = options.message; } ); // [ContainExpression("abc")] 验证是否包含指定字符串,可以不填写:如必须包含abc jQuery.validator.addMethod('checkContain', function (value, element, param) { if (value.indexOf(param) == -1) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('contain', ['param'], function (options) { options.rules['checkContain'] = { param: options.params.param }; options.messages['checkContain'] = options.message; } ); // [NotContainExpression("abc")],验证不能指定字符串,可以不填写,如不能含有abc var v_checknotcontainReturn = ""; jQuery.validator.addMethod('checkNotContain', function (value, element, param) { if (value.indexOf(param) != -1) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('notcontain', ['param'], function (options) { options.rules['checkNotContain'] = { param: options.params.param }; options.messages['checkNotContain'] = options.message; } ); */
双向验证引入JS,否则无法启用前端验证
//双向验证,请加入以下代码 // [IntRangeExpression(18, 30)] 数字在18与30之间,可以不填写,但填写就进入验证 jQuery.validator.addMethod('isinteger', function (value, element, params) { if (value >= parseInt(params['param1']) && value <= parseInt(params['param2'])) return true; return false; }); jQuery.validator.unobtrusive.adapters.add('isinteger', ['param1', 'param2'], function (options) { options.rules['isinteger'] = { param1: options.params.param1, param2: options.params.param2 }; options.messages['isinteger'] = options.message; } ); // [MaxWordsExpression(50)]字符数在不能大50,可以不填写,但填写就进入验证 jQuery.validator.addMethod('checkMaxWords', function (value, element, param) { if (strLen(value) > param) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('maxwords', ['param'], function (options) { options.rules['checkMaxWords'] = { param: options.params.param }; options.messages['checkMaxWords'] = options.message; } ); // [MinWordsExpression(50)]字符数在不能shaoyu 50,可以不填写,但填写就进入验证 jQuery.validator.addMethod('checkMinWords', function (value, element, param) { if (strLen(value) < param) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('minwords', ['param'], function (options) { options.rules['checkMinWords'] = { param: options.params.param }; options.messages['checkMinWords'] = options.message; } ); // [NotEqualExpression("abcd")],不能等于指定的值,可以不填写:如不能等于abcd jQuery.validator.addMethod('checkNotEqual', function (value, element, param) { if (value == param) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('notequal', ['param'], function (options) { options.rules['checkNotEqual'] = { param: options.params.param }; options.messages['checkNotEqual'] = options.message; } ); // [ContainExpression("abc")] 验证是否包含指定字符串,可以不填写:如必须包含abc jQuery.validator.addMethod('checkContain', function (value, element, param) { if (value.indexOf(param) == -1) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('contain', ['param'], function (options) { options.rules['checkContain'] = { param: options.params.param }; options.messages['checkContain'] = options.message; } ); // [NotContainExpression("abc")],验证不能指定字符串,可以不填写,如不能含有abc var v_checknotcontainReturn = ""; jQuery.validator.addMethod('checkNotContain', function (value, element, param) { if (value.indexOf(param) != -1) return false; return true; }); jQuery.validator.unobtrusive.adapters.add('notcontain', ['param'], function (options) { options.rules['checkNotContain'] = { param: options.params.param }; options.messages['checkNotContain'] = options.message; } );
一共包含了19个常用验证及封装
* 1. [IntRangeExpression(18, 30)] 数字在18与30之间,可以不填写,但填写就进入验证
* 2. [MaxWordsExpression(50)] 字符数在不能大50,可以不填写,但填写就进入验证
* 3. [NotNullExpression] 验证是否为空且 调用
* 4. [DateExpression] 是否是日期格式:2012-10-1
* 5. [IsCharExpression] 只能是数字,字母,下划线,中划线组成,可以不填写
* 6. [ChinaCharExpression] 只能输入汉字,可以不填写
* 7. [NotEqualExpression("abcd")] 不能等于指定的值,可以不填写:如不能等于abcd
* 8. [ContainExpression("abc")] 验证是否包含指定字符串,可以不填写:如必须包含abc
* 9. [NotContainExpression("abc")] 验证不能指定字符串,可以不填写,如不能含有abc
*10. [IsIntegerEpression] 验证是否是数字格式 可以不填写,可以为任意整数 1,-5
*11. [IsPositiveIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意正整数 25
*12. [IsNegativeIntegerExpression] 验证是否是数字格式,可以不填写,必须是任意负整数 -25
*13. [IsDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意浮点数 12.12,12,-12.12
*14. [IsPositiveDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意正浮点数 1.4
*15. [IsNegativeDecimalExpression] 验证是否是数字格式 可以不填写,可以为任意负浮点数 -1.2
*16. [EmailExpression] 验证是否是Email
*17. [PhoneExpression] 验证是否是中国电话号码 如:0769-222222-222 正确格式为:"XXX-XXXXXXX"、"XXXX- XXXXXXXX"、"XXX-XXXXXXX"、"XXX-XXXXXXXX"、"XXXXXXX"和"XXXXXXXX"。
*18. [SiteExpression] 验证是否是一个完整的网址 如:www.163.com
*19. [IsNumberExpression] 验证是否是数字格式 可以不填写,可以为任意数字
使用方法
* 组合使用演示
* [DisplayName("姓名")] 名称
* [NotNullExpression] 不能为空
* [MaxWordsExpression(50)] 最多50个字符,25个汉字
* [IsCharExpression] 只能由数字,字母,中划线,下划线组成(一般用于验证ID)
* [NotEqualExpression("admin")] 不能包含有admin字符串
* public string Id { get; set; }
*
* 数字判断演示
* [IsNumberExpression] 可以不填写,填写判断是否是数字
* [DisplayName("代号")]
* public int? age { get; set; }
* 非空字断使用
* //[Required(ErrorMessageResourceType = typeof(ErrorRs), ErrorMessageResourceName = "IsNumberExpression")]
* 或//[Required(ErrorMessage="必须填写这个字段")] 来覆盖本地化 如public int age; int?为可空字端
摘一段代码解释一下吧 比如这个[NotNullExpression] 方法
public class NotNullExpressionAttribute : ValidationAttribute, IClientValidatable { static string DispalyName = ""; public NotNullExpressionAttribute() : base("{0}必须填写") { } public override string FormatErrorMessage(string name) { return String.Format(name, DispalyName); } public override bool IsValid(object value) { if (value == null) { return false; } string valueAsString = value.ToString(); bool result = !string.IsNullOrEmpty(valueAsString); return result; } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { DispalyName = metadata.DisplayName; return new[]{ new ModelClientValidationRequiredRule(FormatErrorMessage("{0}必须填写")) }; } }
校验的方法 IsValid
客户端的验证规则 GetClientValidationRules
封装的错误信息 : base("{0}必须填写") 0代表的是displayName
其他方法都是类似的做法,大家可以根据自己的需要扩展验证。
我们来看看在实际项目中的应用吧!!
//------------------------------------------------------------------------------ // <auto-generated> // 此代码由T4模板自动生成 // 生成时间 2013-03-12 16:05:27 by App // 对此文件的更改可能会导致不正确的行为,并且如果 // 重新生成代码,这些更改将会丢失。 // </auto-generated> //------------------------------------------------------------------------------ using System; using System.ComponentModel.DataAnnotations; using System.Runtime.Serialization; namespace App.Models.Sys { [DataContract] public class SysSampleModel { [Display(Name = "ID")] public string Id { get; set; } [NotNullExpression] [Display(Name = "名称")] public string Name { get; set; } [Display(Name = "年龄")] [Range(0,10000)] public int? Age { get; set; } [Display(Name = "生日")] public DateTime? Bir { get; set; } [MaxLength(5)] [Display(Name = "照片")] [Required] public string Photo { get; set; } [MinLength(5)] [Display(Name = "简介")] public string Note { get; set; } [DateExpressionAttribute] [Display(Name = "创建时间")] public DateTime? CreateTime { get; set; } } }
在model中使用了[NotNullExpression] 与[DateExpressionAttribute]日期验证
打开我们的代码生成器生成SysSample的Create视图,前提你已经创建自定义验证的类和在Create引入验证规则。
之前有关于系列的朋友都有这个样例。如果没有关注的,你可以自己创建一个普通的。
代码生成器生成以下代码:
@model App.Models.Sys.SysSampleModel @using App.Common; @using App.Models.Sys; @using App.Admin; @{ ViewBag.Title = "创建"; Layout = "~/Views/Shared/_Index_LayoutEdit.cshtml"; List<permModel> perm = (List<permModel>)ViewBag.Perm; if (perm == null) { perm = new List<permModel>(); } } <script type="text/javascript"> $(function () { $("#btnSave").click(function () { if ($("form").valid()) { $.ajax({ url: "@Url.Action("Create")", type: "Post", data: $("form").serialize(), dataType: "json", success: function (data) { if (data.type == 1) { window.parent.frameReturnByMes(data.message); window.parent.frameReturnByReload(true); window.parent.frameReturnByClose() } else { window.parent.frameReturnByMes(data.message); } } }); } return false; }); $("#btnReturn").click(function () { window.parent.frameReturnByClose(); }); }); </script> <div class="mvctool bgb"> @Html.ToolButton("btnSave", "icon-save", "保存", perm, "Save", true) @Html.ToolButton("btnReturn", "icon-return", "返回",false) </div> @using (Html.BeginForm()) { <table class="fromEditTable setTextWidth300"> <tbody> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.Id): </td> <td style="width:310px"> @Html.EditorFor(model => model.Id) </td> <td>@Html.ValidationMessageFor(model => model.Id)</td> </tr> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.Name): </td> <td style="width:310px"> @Html.EditorFor(model => model.Name) </td> <td>@Html.ValidationMessageFor(model => model.Name)</td> </tr> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.Age): </td> <td style="width:310px"> @Html.EditorFor(model => model.Age) </td> <td>@Html.ValidationMessageFor(model => model.Age)</td> </tr> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.Bir): </td> <td style="width:310px"> @Html.EditorFor(model => model.Bir) </td> <td>@Html.ValidationMessageFor(model => model.Bir)</td> </tr> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.Photo): </td> <td style="width:310px"> @Html.EditorFor(model => model.Photo) </td> <td>@Html.ValidationMessageFor(model => model.Photo)</td> </tr> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.Note): </td> <td style="width:310px"> @Html.EditorFor(model => model.Note) </td> <td>@Html.ValidationMessageFor(model => model.Note)</td> </tr> <tr> <td style="width:100px; text-align:right;"> @Html.LabelFor(model => model.CreateTime): </td> <td style="width:310px"> @Html.EditorFor(model => model.CreateTime) </td> <td>@Html.ValidationMessageFor(model => model.CreateTime)</td> </tr> </tbody> </table> }
预览效果
前端如果判断和自动输出错误的关键代码在$("form").valid() 这里
后台的关键判断代码在if (model != null && ModelState.IsValid)
只有都为true时才通过双向验证,有力保证系统数据库的安全
总结:其实极其简单的演示,我们创建的MVC3项目中实例已经可以看出来,然而我们封装的验证有效的重用于项目之间
如果你有过硬的正则表达式基础,你完全可以写出更多符合系统的表单验证
这里我只是共享我写的一个验证类,可以直接使用与项目中,配合生成器生成规则验证,其他特性还待园友自行摸索了。
出处:http://ymnets.cnblogs.com/
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