Spring 错误400验证表单“；发送的请求在语法上不正确”；

我在尝试使用Spring Boot和Thymeleaf验证表单时遇到问题。from仅使用给定字段注册用户。我使用的是一个多部分表单，因为表单也会上传一张图片，但我已经尝试过在没有它的情况下使用表单，但仍然存在同样的问题

顺便说一句，我知道这个问题有很多，但没有一个答案能帮助我

如果表单字段正确，则一切正常。但如果我输入了一个无效字段，我会得到一个响应：

HTTP状态400-

类型状态报告

信息

说明客户端发送的请求在语法上不正确

我只是想展示一个气泡来警告这个领域。目前，我在html输入标记中使用“模式”，但用户只需将其从浏览器中删除即可。我可以在控制器中使进程检查无效，并重定向到同一个已清理的页面，但这只是一种不舒服的解决方法

<form class="styleweb" id="registrationform" th:action="@{/site/new_user}" method="post" enctype="multipart/form-data">
        <fieldset>

            <div class="styleweb">
                <label for="login">Login</label> <input id="login" type="text"
                    placeholder="Username" th:field="${user.login}" />
                    <p th:if="${#fields.hasErrors('user.login')}" th:errors="*{user.login}">Incorrect stuff</p>
            </div>

            <div class="styleweb">
                <label for="password">Password</label>
                    <input id="password"
                    type="password" placeholder="Password" th:field="${user.password}"/>
            </div>

            <div class="pure-control-group">
                <label for="email">Email Address</label> <input id="email"
                    type="email" placeholder="Email Address" th:field="${user.email}"/>
            </div>

            <div class="pure-control-group">
                <label for="foo">Profile pic</label> <input type="file" name="profilePic" id="imgInp"/>
                <img id="profilepic" src="#" alt="avatar" />
            </div>

            <div class="styleweb">
                <button type="submit" class="styleweb">Submit</button>
            </div>
        </fieldset>
    </form>

用户类为：

public class User implements UserDetails {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "userId")
    private Long userId;

    @NotNull(message="Login cannot be null")
    @Length(min = 2, max = 20, message="Invalid login lenght")
    @Pattern(regexp=Constant.loginPattern, message="Invalid login name")
    private String login;

    @Column(name = "password", length = 255)
    @Length(min = 8, max = 255)
    private String password;

    private String email;

    // constructor, getters and setters, ...

}

我还尝试使用以下实现：

但也不管用。如果不使用th:If=“${#fields.hasErrors（'user.login'）}（…）标记（这是一个哑标记，但我只是拼命想找到一个解决方案）返回：

org.springframework.beans.NotReadablePropertyException:无效 bean类的属性“login”[java.lang.String]：bean属性 “login”不可读或具有无效的getter方法：是否 getter的返回类型是否与setter的参数类型匹配？ （…）.validator.FormValidator.validate（FormValidator.java:28）

问一下，这是我处理这件事的最后一站，希望有人能帮助我。 谢谢大家!

编辑

以下是我发送包含无效数据的表单post时的日志：

2014-08-06 14:42:01.717 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /site/new_user
2014-08-06 14:42:01.718 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String es.sdfd.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]
2014-08-06 14:42:01.743 DEBUG 9759 --- .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [public java.lang.String es.sfacut.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'user' on field 'login': rejected value [u]; codes [Pattern.user.login,Pattern.login,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],[Ljavax.validation.constraints.Pattern$Flag;@23d2602c,^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$]; default message [Invalid login name]
Field error in object 'user' on field 'login': rejected value [u]; codes [Length.user.login,Length.login,Length.java.lang.String,Length]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],20,2]; default message [Invalid login lenght]
2014-08-06 14:42:01.744 DEBUG 9759 --- .w.s.m.a.ResponseStatusExceptionResolver : Resolving exception from handler [public java.lang.String es.sfacut.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'user' on field 'login': rejected value [u]; codes [Pattern.user.login,Pattern.login,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],[Ljavax.validation.constraints.Pattern$Flag;@23d2602c,^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$]; default message [Invalid login name]
Field error in object 'user' on field 'login': rejected value [u]; codes [Length.user.login,Length.login,Length.java.lang.String,Length]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],20,2]; default message [Invalid login lenght]
2014-08-06 14:42:01.745 DEBUG 9759 --- .w.s.m.s.DefaultHandlerExceptionResolver : Resolving exception from handler [public java.lang.String es.sfacut.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'user' on field 'login': rejected value [u]; codes [Pattern.user.login,Pattern.login,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],[Ljavax.validation.constraints.Pattern$Flag;@23d2602c,^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$]; default message [Invalid login name]
Field error in object 'user' on field 'login': rejected value [u]; codes [Length.user.login,Length.login,Length.java.lang.String,Length]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],20,2]; default message [Invalid login lenght]
2014-08-06 14:42:01.745 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2014-08-06 14:42:01.746 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Successfully completed request
2014-08-06 14:42:01.748 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing POST request for [/error]
2014-08-06 14:42:01.749 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2014-08-06 14:42:01.749 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String es.sfacut.rest.controller.MainController.errorPage()]
2014-08-06 14:42:01.751 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Rendering view [org.thymeleaf.spring4.view.ThymeleafView@503dc0cf] in DispatcherServlet with name 'dispatcherServlet'
2014-08-06 14:42:01.755 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Successfully completed request

2014-08-06 14:54:25.703 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/site/new_user]
2014-08-06 14:54:25.703 DEBUG 10138 --- [nio-8080-exec-3] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /site/new_user
2014-08-06 14:54:25.705 DEBUG 10138 --- [nio-8080-exec-3] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String es.sfacut.rest.web.UserWebController.addUserPage(org.springframework.ui.Model)]
2014-08-06 14:54:25.705 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/site/new_user] is: -1
2014-08-06 14:54:25.712 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Rendering view [org.thymeleaf.spring4.view.ThymeleafView@4b34f94d] in DispatcherServlet with name 'dispatcherServlet'
2014-08-06 14:54:25.722 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Successfully completed request

这是包含有效数据的日志：

2014-08-06 14:42:01.717 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /site/new_user
2014-08-06 14:42:01.718 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String es.sdfd.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]
2014-08-06 14:42:01.743 DEBUG 9759 --- .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [public java.lang.String es.sfacut.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'user' on field 'login': rejected value [u]; codes [Pattern.user.login,Pattern.login,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],[Ljavax.validation.constraints.Pattern$Flag;@23d2602c,^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$]; default message [Invalid login name]
Field error in object 'user' on field 'login': rejected value [u]; codes [Length.user.login,Length.login,Length.java.lang.String,Length]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],20,2]; default message [Invalid login lenght]
2014-08-06 14:42:01.744 DEBUG 9759 --- .w.s.m.a.ResponseStatusExceptionResolver : Resolving exception from handler [public java.lang.String es.sfacut.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'user' on field 'login': rejected value [u]; codes [Pattern.user.login,Pattern.login,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],[Ljavax.validation.constraints.Pattern$Flag;@23d2602c,^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$]; default message [Invalid login name]
Field error in object 'user' on field 'login': rejected value [u]; codes [Length.user.login,Length.login,Length.java.lang.String,Length]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],20,2]; default message [Invalid login lenght]
2014-08-06 14:42:01.745 DEBUG 9759 --- .w.s.m.s.DefaultHandlerExceptionResolver : Resolving exception from handler [public java.lang.String es.sfacut.rest.web.UserWebController.processAddUserWeb(es.sfacut.model.user.User,java.lang.String,org.springframework.web.multipart.MultipartFile,org.springframework.validation.BindingResult,org.springframework.ui.ModelMap) throws es.sfacut.rest.controller.exception.LoginNotAvailableException,java.io.UnsupportedEncodingException]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors
Field error in object 'user' on field 'login': rejected value [u]; codes [Pattern.user.login,Pattern.login,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],[Ljavax.validation.constraints.Pattern$Flag;@23d2602c,^[a-zA-Z][a-zA-Z0-9-_\.]{1,20}$]; default message [Invalid login name]
Field error in object 'user' on field 'login': rejected value [u]; codes [Length.user.login,Length.login,Length.java.lang.String,Length]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.login,login]; arguments []; default message [login],20,2]; default message [Invalid login lenght]
2014-08-06 14:42:01.745 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2014-08-06 14:42:01.746 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Successfully completed request
2014-08-06 14:42:01.748 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing POST request for [/error]
2014-08-06 14:42:01.749 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2014-08-06 14:42:01.749 DEBUG 9759 --- s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String es.sfacut.rest.controller.MainController.errorPage()]
2014-08-06 14:42:01.751 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Rendering view [org.thymeleaf.spring4.view.ThymeleafView@503dc0cf] in DispatcherServlet with name 'dispatcherServlet'
2014-08-06 14:42:01.755 DEBUG 9759 --- o.s.web.servlet.DispatcherServlet        : Successfully completed request

2014-08-06 14:54:25.703 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/site/new_user]
2014-08-06 14:54:25.703 DEBUG 10138 --- [nio-8080-exec-3] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /site/new_user
2014-08-06 14:54:25.705 DEBUG 10138 --- [nio-8080-exec-3] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String es.sfacut.rest.web.UserWebController.addUserPage(org.springframework.ui.Model)]
2014-08-06 14:54:25.705 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/site/new_user] is: -1
2014-08-06 14:54:25.712 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Rendering view [org.thymeleaf.spring4.view.ThymeleafView@4b34f94d] in DispatcherServlet with name 'dispatcherServlet'
2014-08-06 14:54:25.722 DEBUG 10138 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Successfully completed request

大多数

元素

<input id="login" type="text" placeholder="Username" th:field="${user.login}" />
<input id="password" type="password" placeholder="Password" th:field="${user.password}"/>
<input id="email" type="email" placeholder="Email Address" th:field="${user.email}"/>

没有

名称

属性。

名称

属性是

元素作为提交的

的一部分发送所必需的。因此这些属性不会被发送，验证似乎失败

---

在

元素中添加一个

name

属性，该属性的值可能与

id

相同。

您需要将

BindingResult

放在

用户

之后，Spring才能正确处理无效数据

因此，控制器方法如下所示：

public String processAddUserWeb(@ModelAttribute(value = "user") User user,
                                BindingResult result,
                                @ModelAttribute(value = "profilePic") MultipartFile profilePic)

---

BindingResult和@ModelAttribute的顺序无效 我只是改变了顺序，像个魔术师一样工作

@RequestMapping(value = "/addUser", method = RequestMethod.POST)
public String addUser( @ModelAttribute("SpringWeb")@Valid User user,BindingResult binding, ModelMap model) {
    System.out.println(binding.toString());

    if (!binding.hasErrors()) {

        System.out.println("Has No Error");
        model.addAttribute("username", user.getUsername());
        model.addAttribute("password", user.getPassword());
        model.addAttribute("address", user.getAddress());
        model.addAttribute("receivePaper", user.isReceivePaper());
        model.addAttribute("favoriteFrameworks", user.getFavoriteFrameworks());
        model.addAttribute("gender", user.getGender());
        model.addAttribute("favoriteNumber", user.getFavoriteNumber());
        model.addAttribute("country", user.getCountry());

        return "users";

    } else {
        System.out.println("Has  Error");

        return "error";
    }

}

---

感谢您的回复，但添加name属性没有任何区别。我尝试了几件添加了该属性的事情，但似乎都不起作用。@frostering您发送的是有效数据吗？将日志转到调试级别，并向我们准确显示错误请求和良好请求的打印内容。当我发送有效数据和所有内容时工作正常。但如果数据无效则不行。我已经使用HTML5模式属性进行了一次解决，如果HTML5表单已被编辑，则会抛出一个错误页面（因此我不允许无效值），但我想知道这是怎么回事，为什么不起作用。我猜返回给名为“DispatcherServlet”的DispatcherServlet的Null ModelAndView：假设HandlerAdapter完成的请求处理与此有关？您是否尝试过将

BindingResult

放在

用户

之后（您现在在

多部分文件配置文件pic

之后有了它）？@geo好的，现在我得到的是预期的页面，而不是错误页面，但我在表单字段中根本看不到任何错误消息。无论是否使用我的验证器的实现。尝试在

@modeldattribute

前面添加

@Valid

，并告诉我发生了什么对不起@geo，您的第一个响应是正确的！这是我的错，因为我在注释了Nevermind之后，我发现了它：错误或BindingResult参数必须跟在立即绑定的模型对象后面，因为方法签名可能有多个模型对象，Spring将为每个模型对象创建一个单独的BindingResult实例，所以下面的示例在16.3.3中不起作用

@RequestMapping(value = "/addUser", method = RequestMethod.POST)
public String addUser( @ModelAttribute("SpringWeb")@Valid User user,BindingResult binding, ModelMap model) {
    System.out.println(binding.toString());

    if (!binding.hasErrors()) {

        System.out.println("Has No Error");
        model.addAttribute("username", user.getUsername());
        model.addAttribute("password", user.getPassword());
        model.addAttribute("address", user.getAddress());
        model.addAttribute("receivePaper", user.isReceivePaper());
        model.addAttribute("favoriteFrameworks", user.getFavoriteFrameworks());
        model.addAttribute("gender", user.getGender());
        model.addAttribute("favoriteNumber", user.getFavoriteNumber());
        model.addAttribute("country", user.getCountry());

        return "users";

    } else {
        System.out.println("Has  Error");

        return "error";
    }

}