SpringMVC服务器端校验-有配置文件

Hibernate-validator进行验证

配置beans.xml文件，如下：

  
    <mvc:annotation-driven validator="validator" conversion-service="conversion-service" />
    
    <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <property name="providerClass"  value="org.hibernate.validator.HibernateValidator"/>
        
        <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>

其中<property name="basename" value="classpath:validatemessages"/>中的classpath:validatemessages为注解验证消息所在的文件，需要我们在resources文件夹下添加。

在com.demo.web.controllers包中添加一个ValidateController.java内容如下：

package com.demo.web.controllers;

import java.security.NoSuchAlgorithmException;
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.demo.web.models.ValidateModel;

@Controller
@RequestMapping(value = "/validate")
public class ValidateController {
    
    @RequestMapping(value="/test", method = {RequestMethod.GET})
    public String test(Model model){

        if(!model.containsAttribute("contentModel")){
            model.addAttribute("contentModel", new ValidateModel());
        }
        return "validatetest";
    }
    
    @RequestMapping(value="/test", method = {RequestMethod.POST})
    public String test(Model model, @Valid @ModelAttribute("contentModel") ValidateModel validateModel, BindingResult result) throws NoSuchAlgorithmException{
        
        //如果有验证错误 返回到form页面
        if(result.hasErrors())
            return test(model);
        return "validatesuccess";     
    }
    
}

其中@Valid @ModelAttribute("contentModel") ValidateModel validateModel的@Valid 意思是在把数据绑定到@ModelAttribute("contentModel") 后就进行验证。

在com.demo.web.models包中添加一个ValidateModel.java内容如下：

package com.demo.web.models;

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;
    }
    
}

在注解验证消息所在的文件即validatemessages.properties文件中添加以下内容：

name.not.empty=\u540D\u79F0\u4E0D\u80FD\u4E3A\u7A7A\u3002
age.not.inrange=\u5E74\u9F84\u8D85\u51FA\u8303\u56F4\u3002
email.not.correct=\u90AE\u7BB1\u5730\u5740\u4E0D\u6B63\u786E\u3002
email.not.empty=\u7535\u5B50\u90AE\u4EF6\u4E0D\u80FD\u60DF\u6050\u3002

其中name.not.empty等分别对应了ValidateModel.java文件中message=”xxx”中的xxx名称，后面的内容是在输入中文是自动转换的ASCII编码，当然你也可以直接把xxx写成提示内容，而不用另建一个validatemessages.properties文件再添加，但这是不正确的做法，因为这样硬编码的话就没有办法进行国际化了。

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