系列目录

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

  1. 不为空验证  [Required(ErrorMessage = "不能为空")]
  2. 长度验证     [StringLength(10, MinimumLength = 2)]
  3. 取值范围     [Range(1, 3)]
  4. 类型验证     [DataType(DataType.Date)]
  5. 正则表达     [RegularExpression(@”[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+/.[A-Za-z]{2,4}”)]   Email Demo
  6. 远程验证     [Remote("CheckUserNameExists", "ValidationDemo", ErrorMessage = "用户名已存在")]
  7. 请求验证     [AllowHtml] 允许传入HTML
  8. 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 / , 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)$))";
public DateExpressionAttribute()
: base(regStr)
{ } public override bool IsValid(object value)
{
if (value == null)
return true;
Regex reg = new Regex(regStr);
string valueAsString = value.ToString();
string dtvalue;
if (value.ToString().IndexOf(" ") > )
{
dtvalue = valueAsString.Replace("/", "-").Substring(, valueAsString.IndexOf(" "));
}
else
{
dtvalue = valueAsString.Replace("/", "-");
}
Match mch = reg.Match(dtvalue);
if (mch.Success)
{
return true;
}
else
{
return false;
}
} public override string FormatErrorMessage(string name)
{
return String.Format(CultureInfo.CurrentCulture,
"{0}必须是日期格式:2012-10-10", name);
} public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var name = metadata.GetDisplayName();
var rule = new ModelClientValidationRegexRule(FormatErrorMessage(name), Pattern);
yield return rule;
}
}
/// <summary>
/// [IsCharExpression] 只能是数字,字母,下划线,中划线组成,可以不填写
/// </summary>
public class IsCharExpressionAttribute : RegularExpressionAttribute, IClientValidatable
{
static string regStr = @"^[0-9A-Za-z_-]{0,}$";
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) == -)
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) != -)
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(,)]
public int? Age { get; set; } [Display(Name = "生日")]
public DateTime? Bir { get; set; } [MaxLength()]
[Display(Name = "照片")]
[Required]
public string Photo { get; set; }
[MinLength()]
[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 == ) {
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

ASP.NET MVC5+EF6+EasyUI 后台管理系统(33)-MVC 表单验证-LMLPHP

ASP.NET MVC5+EF6+EasyUI 后台管理系统(33)-MVC 表单验证-LMLPHP

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。

04-20 22:51