Question

我正在开发Spring-MVC应用程序，我想验证一些数据。目前，我能够毫无问题地验证数据。唯一的问题是，如果数据无效，我想转到另一个JSP页面，这个页面现在没有发生。相反，我收到Apache 400错误，请求在语法上发送不正确。任何人都可以告诉我在验证中还有什么可以实现。

控制器：

@RequestMapping(value = "/", method = RequestMethod.GET)
    public String listPersons(Model model) {
        Person person = personService.getCurrentlyAuthenticatedUser();
        if(!(person==null)){
            return "redirect:/canvas/list";
        } else {
            model.addAttribute("person", new Person());
         //   model.addAttribute("listPersons", this.personService.listPersons());
            model.addAttribute("notices",new Notes());
            model.addAttribute("canvases",new Canvas());
            return "person";
        }
    }

    @RequestMapping(value= "/person/add", method = RequestMethod.POST)
    public String addPerson(@Valid Person person,@ModelAttribute("person") Person p,Model model,BindingResult bindingResult){

        if(bindingResult.hasErrors()){
            return "redirect:/";
        }
            this.personService.addPerson(p);
            return "redirect:/";

    }

实体：

@Entity
@Table(name="person")
public class Person implements UserDetails{

    @NotEmpty @Email
    @Column(name = "username")
    private String username;

    @NotEmpty(message = "Please enter password")
    @Column(name = "password")
    private String password;

    @Size(min = 2,max = 30)
    @Column(name = "firstname")
    private String firstName;

    @Size(min = 2,max = 50)
    @Column(name = "secretquestion")
    private String secretquestion;


    @Size(min = 2,max = 500)
    @Column(name = "secretanswer")
    private String secretanswer;
}

JSP：

<tr>
    <td>
        <form:label path="firstName">
            <spring:message text="FirstName"/>
        </form:label>
    </td>
    <td>
        <form:input path="firstName" />
    </td>
    <td><form:errors path="firstName"/>Please enter Firstname properly</td>
</tr>
<tr>
    <td>
        <form:label path="username">
            <spring:message text="Email"/>
        </form:label>
    </td>
    <td>
        <form:input path="username" />
    </td>
    <td><form:errors path="username"/>Please enter Email properly</td>
</tr>
<tr>
    <td>
        <form:label path="password">
            <spring:message text="Password"/>
        </form:label>
    </td>
    <td>
        <form:input path="password" />
    </td>
    <td><form:errors path="password"/>Please enter password properly</td>
</tr>

<tr>
<td>
    <form:label path="secretquestion">
        <spring:message text="secretquestion"/>
    </form:label>
</td>
<td>
    <form:input path="secretquestion" />
</td>
    <td><form:errors path="secretquestion"/>Please enter secretquestion properly</td>
</tr>


<tr>
    <td>
        <form:label path="secretanswer">
            <spring:message text="secretanswer"/>
        </form:label>
    </td>
    <td>
        <form:input path="secretanswer" />
    </td>
    <td><form:errors path="secretanswer"/>Please enter secretanswer properly</td>
</tr>

Servlet的context.xml中

 <beans:bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"/>

的pom.xml

<!-- Validation -->
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>1.0.0.GA</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.1.Final</version>
        </dependency>

任何指针都会很好。主要是我想避免使用Apache 400，但只显示输入字段的确切错误。

Answer 1

这可能是因为public String addPerson(@Valid Person person,@ModelAttribute("person") Person p,Model model,BindingResult bindingResult)签名。
BindingResult必须跟随@ModelAttribute因为方法签名可能有更多的模型对象，而Spring会为每个模型对象创建一个单独的BindingResult实例。这就是为什么当数据无效时spring不是能够将错误绑定到BindingResult并抛出400错误。

尝试将方法签名更改为public String addPerson(@Valid Person person,@ModelAttribute("person") Person p,BindingResult bindingResult,Model model)。

详细了解BindingResult。

使用Javax.validation进行Spring验证重定向到400

1 个答案: