Spring的校验(Validator)
使用Spring校验的大体流程:
最首先要有配置文件xml的支持(spring_validate.xml).(当然在web.xml中要有对该xml的体现)
1 <beans xmlns="http://www.springframework.org/schema/beans" 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 3 xmlns:context="http://www.springframework.org/schema/context" 4 xmlns:mvc="http://www.springframework.org/schema/mvc" 5 xsi:schemaLocation=" 6 http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context-4.0.xsd 10 http://www.springframework.org/schema/mvc 11 http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 12 "> 13 14 <bean id="validator" 15 class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"> 16 <property name="providerClass" value="org.hibernate.validator.HibernateValidator" /> 17 <!-- 如果不加默认到 使用classpath下的 ValidationMessages.properties --> 18 <property name="validationMessageSource" ref="messageSource" /> 19 </bean> 20 21 22 23 <bean id="messageSource" 24 class="org.springframework.context.support.ReloadableResourceBundleMessageSource"> 25 <!-- 以发布到服务器的路径为准 --> 26 <property name="basename" value="classpath:messages" /> 27 <property name="fileEncodings" value="utf-8" /> 28 <property name="cacheSeconds" value="120" /> 29 </bean> 30 31 <bean id="webBindingInitializer" 32 class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer"> 33 34 <property name="conversionService"> 35 <bean 36 class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> 37 </bean> 38 39 </property> 40 <property name="validator" ref="validator" /> 41 </bean> 42 43 </beans>
然后就是这个东西登场了:messages.properties.
然后在model层里相应的地方也要有相应的体现
1 public class User{ 2 3 @NotEmpty 4 private String username; 5 @NotEmpty 6 private String password; 7 @NotEmpty 8 private String repassword; 9 10 @NotEmpty 11 @Email 12 private String email; 13 @NotEmpty 14 private String xm; 15 }
再然后是control层里的调用:
1 public String xx(@Valid User user, 2 BindingResult result, Map map ){ 3 4 if(result.hasErrors()){ 5 return "xx.ftl"; 6 } 7 }
最后是在JSP页面了(个人用的是ftl)
首先要有这两句话:Spring的组件
1 <#assign spring=JspTaglibs["http://www.springframework.org/tags"]/>
2 <#assign form=JspTaglibs["http://www.springframework.org/tags/form"] />
然后在对应的input下都要有所体现
1 用户名:<input type="text" name="username" id="username"> 2<@form.errors path="username"/> 3 密码:<input type="text" name="password" id="password"> 4<@form.errors path="password"/>
在最后注意form表单要这样写。其中commandName是那个的实体类名的小写。
1 <@form.form commandName="user" action="" method="post" name="" id="">
显示的效果是这样:
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