![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
转自:https://www.cnblogs.com/wenhulu/p/5555457.html
当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:
Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute
先看下controller:
![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg%3D%3D.gif?w=700&webp=1)
@RequestMapping(value="/{userId}/updateUser",method=RequestMethod.POST)
public String updateUser(@PathVariable int userId,@Valid SysUser user,BindingResult br)
{
if(br.hasErrors())
{
return "updateUser";
}
userServiceInter.update(user);
return "redirect:/user/users";
}
![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg%3D%3D.gif?w=700&webp=1)
上面代码对user的输入进行验证,报以上错误,为了解决这个问题,我们需要在@Valid之后添加一个注解@ModelAttribute("user") SysUser user,然后在jsp页面的添加
<form modelAttribute="user"></form>,解决问题。
contriller:
![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg%3D%3D.gif?w=700&webp=1)
@RequestMapping(value="/{userId}/updateUser",method=RequestMethod.POST)
public String updateUser(@PathVariable int userId,@Valid @ModelAttribute("user")SysUser user,BindingResult br)
{
if(br.hasErrors())
{
return "updateUser";
}
userServiceInter.update(user);
return "redirect:/user/users";
}
![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg%3D%3D.gif?w=700&webp=1)
update.jsp:
![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg%3D%3D.gif?w=700&webp=1)
<sf:form method="post" modelAttribute="user">
<tr><td>userName:</td><td><sf:input path="userName"/><sf:errors path="userName"/></td></tr>
<tr><td>userPwd:</td><td><sf:input path="userPwd"/><sf:errors path="userPwd"/></td></tr>
<tr><td>email:</td><td><sf:input path="email"/><sf:errors path="email"/></td></tr>
<tr><td>userStatus:</td><td><sf:input path="userStatus"/><sf:errors path="userStatus"/></td></tr>
<tr><td>accountNonLocked:</td><td><sf:input path="accountNonLocked"/><sf:errors path="accountNonLocked"/></td></tr>
<tr><td></td><td><input type="submit" value="update" onclick="javascript:return window.confirm('Are you sure to update')"/></td></tr>
</sf:form>
![当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute 当使用Spring MVC @Valid对输入框进行验证的时候,可能会遇到以下的异常:Neither BindingResult nor plain target object for bean name ‘mybean’ available as request attribute](https://image.shishitao.com:8440/aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg%3D%3D.gif?w=700&webp=1)
另一补充一下:
org.springframework.validation.annotation是放在spring-context-4.0.0RELEASE.jar下。
转自:http://www.cnblogs.com/wenhulu/p/5555457.html