我正在尝试通过使用简单的登录用例在 Spring 3.0 中实现 JSR 303 bean 验证。问题是,如果我提交没有任何值的表单,则不会发生验证(即 BindingResult 方法 hasErrors() 总是返回“false”并打印我很酷!。以下是代码片段:
@Controller
public class AnnotatedController {
@RequestMapping(value = "login")
public String validateLogin(@Valid LoginForm loginForm, BindingResult result, HttpServletRequest request) {
if(result.hasErrors())
System.out.println("Got Errors !");
else
System.out.println("I'm cool !");
return "login";
}
}
豆看起来像这样:
public class LoginForm {
@NotEmpty
private String userName;
@Size(min=2, max=3)
private String password;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
最后是观点:
<table>
<form:form action="login.htm" modelAttribute="loginForm">
<tr>
<td>User :</td>
<td><form:input path="userName" /></td>
</tr>
<tr>
<td>Password :</td>
<td><form:input path="password" /></td>
</tr>
<tr><td><input type="submit" value="Ok"> </tr>
</form:form>
</table>
我错过了什么?