springmvc JSR303 Validate 注解式，校验数据

参考：http://www.cnblogs.com/liukemng/category/578644.html

先进行配置：

<!-- 默认的注解映射的支持 -->
    <mvc:annotation-driven validator="validator" conversion-service="conversion-service" />

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <property name="providerClass"  value="org.hibernate.validator.HibernateValidator"/>
        <!--不设置则默认为classpath下的 ValidationMessages.properties -->
        <property name="validationMessageSource" ref="validatemessageSource"/>
    </bean>
    <bean id="conversion-service" class="org.springframework.format.support.FormattingConversionServiceFactoryBean" />
    <bean id="validatemessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basename" value="classpath:validatemessages"/>
        <property name="fileEncodings" value="utf-8"/>
        <property name="cacheSeconds" value="120"/>
    </bean>

model:

import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
import org.hibernate.validator.constraints.Range;

public class ValidateModel{

    @NotEmpty(message="{name.not.empty}")
    private String name;
    @Range(min=0, max=150,message="{age.not.inrange}")
    private String age;
    @NotEmpty(message="{email.not.empty}")
    @Email(message="{email.not.correct}")
    private String email;

    public void setName(String name){
        this.name=name;
    }
    public void setAge(String age){
        this.age=age;
    }
    public void setEmail(String email){
        this.email=email;
    }

    public String getName(){
        return this.name;
    }
    public String getAge(){
        return this.age;
    }
    public String getEmail(){
        return this.email;
    }

}

validatemessages.properties

name.not.empty=u540Du79F0u4E0Du80FDu4E3Au7A7Au3002
age.not.inrange=u5E74u9F84u8D85u51FAu8303u56F4u3002
email.not.correct=u90AEu7BB1u5730u5740u4E0Du6B63u786Eu3002
email.not.empty=u7535u5B50u90AEu4EF6u4E0Du80FDu60DFu6050u3002

validatetest.jsp:(用于提交数据的表单页面)

<form:form modelAttribute="contentModel" method="post">

    <form:errors path="*"></form:errors><br/><br/>

    name：<form:input path="name" /><br/>
    <form:errors path="name"></form:errors><br/>

    age：<form:input path="age" /><br/>
    <form:errors path="age"></form:errors><br/>

    email：<form:input path="email" /><br/>
    <form:errors path="email"></form:errors><br/>

    <input type="submit" value="Submit" />

</form:form>

validatesuccess.jsp:(验证通过后，跳转的页面)

<body>
验证成功！
</body>

from表单请求式：

controller:

/**
     * 请求该地址，进入表单页
     * @param model
     * @return
     */
    @RequestMapping(value="/test", method = {RequestMethod.GET})
    public String test(Model model){
        if(!model.containsAttribute("contentModel")){
            model.addAttribute("contentModel", new ValidateModel());
        }
        return "validatetest";
    }

/**
     * 请求该地址，校验数据
     * @param model
     * @param validateModel
     * @param result
     * @return
     */
    @RequestMapping(value="/test", method = {RequestMethod.POST},produces = "text/html")
    public String test2(Model model,@Valid @ModelAttribute("contentModel") ValidateModel validateModel,BindingResult result) {
        //如果有验证错误 返回到form页面
        if(result.hasErrors()) {
            test(model);
        }
        return "validatesuccess";
    }

bindingresult里有校验的结果，model里会携带bindingresult，然后在jsp页面渲染 错误信息！

结果示例：

AJAX请求式：

/**
     * ajax 验证数据
     * @param validateModel
     * @param result
     * @return
     */
    @RequestMapping(value="/test", method = {RequestMethod.POST},produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String test(@Valid ValidateModel validateModel, BeanPropertyBindingResult result) {
        if(result.hasErrors()) {
            StringBuilder sb  = new StringBuilder();
            List<ObjectError> lit = result.getAllErrors();
            for (ObjectError objectError : lit) {
                FieldError error = (FieldError)objectError;
                String a = error.getDefaultMessage();
                sb.append(a);
            }
            return sb.toString();
        }
        return "success";
    }

        $("#test").click(function () {
            $.ajax({
                url:"test",
                type:"post",
                data:"name=&age=&email=1",
                success:function (result) {
                    alert(result);
                }
            });
        });

这个controller，重点是，我将bindingresult 替换城了 BeanPropertyBindingResult 对象了，因为从这个对象里，能将错误的信息获取出来。

然后将错误的信息拼接返回。结果：

 

下面是主要的验证注解及说明：

注解

适用的数据类型

说明

@AssertFalse

Boolean, boolean

验证注解的元素值是false

@AssertTrue

Boolean, boolean

验证注解的元素值是true

@DecimalMax（value=x）

BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence.

验证注解的元素值小于等于@ DecimalMax指定的value值

@DecimalMin（value=x）

BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence.

验证注解的元素值小于等于@ DecimalMin指定的value值

@Digits(integer=整数位数, fraction=小数位数)

BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence.

验证注解的元素值的整数位数和小数位数上限

@Future

java.util.Date, java.util.Calendar; Additionally supported by HV, if theJoda Time date/time API is on the class path: any implementations ofReadablePartial andReadableInstant.

验证注解的元素值（日期类型）比当前时间晚

@Max（value=x）

BigDecimal, BigInteger, byte, short,int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type ofCharSequence (the numeric value represented by the character sequence is evaluated), any sub-type of Number.

验证注解的元素值小于等于@Max指定的value值

@Min（value=x）

BigDecimal, BigInteger, byte, short,int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of CharSequence (the numeric value represented by the char sequence is evaluated), any sub-type of Number.

验证注解的元素值大于等于@Min指定的value值

@NotNull

Any type

验证注解的元素值不是null

@Null

Any type

验证注解的元素值是null

@Past

java.util.Date, java.util.Calendar; Additionally supported by HV, if theJoda Time date/time API is on the class path: any implementations ofReadablePartial andReadableInstant.

验证注解的元素值（日期类型）比当前时间早

@Pattern(regex=正则表达式, flag=)

String. Additionally supported by HV: any sub-type of CharSequence.

验证注解的元素值与指定的正则表达式匹配

@Size(min=最小值, max=最大值)

String, Collection, Map and arrays. Additionally supported by HV: any sub-type of CharSequence.

验证注解的元素值的在min和max（包含）指定区间之内，如字符长度、集合大小

@Valid

Any non-primitive type（引用类型）

验证关联的对象，如账户对象里有一个订单对象，指定验证订单对象

@NotEmpty

CharSequence,Collection, Map and Arrays

验证注解的元素值不为null且不为空（字符串长度不为0、集合大小不为0）

@Range(min=最小值, max=最大值)

CharSequence, Collection, Map and Arrays,BigDecimal, BigInteger, CharSequence, byte, short, int, long and the respective wrappers of the primitive types

验证注解的元素值在最小值和最大值之间

@NotBlank

CharSequence

验证注解的元素值不为空（不为null、去除首位空格后长度为0），不同于@NotEmpty，@NotBlank只应用于字符串且在比较时会去除字符串的空格

@Length(min=下限, max=上限)

CharSequence

验证注解的元素值长度在min和max区间内

@Email

CharSequence

验证注解的元素值是Email，也可以通过正则表达式和flag指定自定义的email格式
【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/yanqin/p/7059054.html