我是Tomcat和Spring Web的新手。我试图通过遵循this tutorial来使用Spring的表单验证功能。除了一件事情之外,一切似乎都能顺利运行......我的表单没有进行任何验证,当我发送表单时,无论提供哪些数据,我都可以进入成功页面。表单输入约束没有被强制执行?
我是否正确使用约束条件?我想强制用户填写他们的名字,并且名字至少有两个字符长。
package net.devmanuals.form;
import javax.validation.constraints.Size;
import org.hibernate.validator.constraints.NotEmpty;
public class RegistrationForm {
@NotEmpty(message = "You surely have a name, don't you?")
@Size(min = 2, message = "I'm pretty sure that your name consists of more than one letter.")
private String firstName;
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getFirstName() {
return this.firstName;
}
}
形态代码:
<form:form method="post" commandName="regform">
<p><form:input path="firstName" /> <form:errors path="firstName" /></p>
<p><input type="submit" /></p>
</form:form>
控制器:
@Controller
@RequestMapping("/register")
public class RegistrationController {
@RequestMapping(method = RequestMethod.GET)
public String showRegForm(Map model) {
RegistrationForm regForm = new RegistrationForm();
model.put("regform", regForm);
return "regform";
}
@RequestMapping(method = RequestMethod.POST)
public String validateForm(@Valid RegistrationForm regForm, BindingResult result, Map model) {
if (result.hasErrors()) {
return "regform";
}
model.put("regform", regForm);
return "regsuccess";
}
}
我是否施加的约束不正确?
你的配置中是否有' '? –
skaffman
2011-05-04 19:36:52
哎呀。我尝试将它添加到我的'Dispatcher-servlet.xml'中,但部署后出现此错误:*未绑定元素“mvc:annotation-driven”的前缀“mvc”。* – Pieter 2011-05-04 19:56:11
在您的配置中为mvc添加命名空间,即xmlns:mvc =“http://www.springframework.org/schema/mvc”..... – 2011-05-04 23:50:21