java Spring 验证异常：BindException

Spring Validation Exception : BindException

提问by kartikag01

on submitting form to addUsercontroller exception occured

向addUser控制器提交表单时发生异常

SEVERE: Servlet.service() for servlet dispatcherServlet threw exception org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors Field error in object 'userBean' on field 'email': rejected value [hello]; codes [Email.userBean.email,Email.email,Email.java.lang.String,Email]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [userBean.email,email]; arguments []; default message [email]]; default message [Not a vaild Email Address] at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:111) at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:75) at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:156) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:117) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:744)

严重：servlet dispatcherServlet 的 Servlet.service() 抛出异常 org.springframework.validation.BindException：org.springframework.validation.BeanPropertyBindingResult：1 个错误字段“email”上的对象“userBean”中的字段错误：拒绝值 [hello]；代码 [Email.userBean.email,Email.email,Email.java.lang.String,Email]; 参数 [org.springframework.context.support.DefaultMessageSourceResolvable: 代码 [userBean.email,email]; 参数 []; 默认消息 [email]]; org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:111) at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgument.java:111)的默认消息[不是有效的电子邮件地址] ) 在组织。

Controller for getting Form

获取表单的控制器

    @RequestMapping(method = RequestMethod.GET, value = "register")
public String addUser(Model model) {
    if (!model.containsAttribute("wrongLink")) {
        System.out.println("not wrong Link");
        model.addAttribute(new UserBean());
    } else {
        System.out.println("wrong Link");
    }
    return "user/register";
}

Controller to post form

控制器发布表单

@RequestMapping(method = RequestMethod.POST, value = "register")
public String addUser(@Valid UserBean userBean, Model model,
        RedirectAttributes redirectAttrs, BindingResult bindingResult) {
    System.out.println("in addUser form");
    if (bindingResult.hasErrors()) {
        System.out.println("ERROR in user Form");
        return "user/edit";
    }
    return "redirect:/users/" + user.getDisplayName();
}

UserBean class

UserBean 类

import org.hibernate.validator.constraints.Email;
public class UserBean {

private Integer id;

@Email(message = "Not a vaild Email Address")
private String email;
//getter and setter
}

Form

形式

<div id="container">
    <sf:form method="POST" modelAttribute="userBean">
            <div class="form">
                <sf:input path="email" type="text" id="email"
                    placeholder="email address" />
                <sf:errors path="email" cssClass="error" />
                <input class="send submit" type="submit" name="submit_first"
                    id="submit_first" value="" />
            </div>
    </sf:form>
</div>

spring.xml

弹簧文件

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
    http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"
xmlns:tx="http://www.springframework.org/schema/tx">

<context:component-scan base-package="com.example" />

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="host" value="${smtp.host}" />
    <property name="port" value="${smtp.port}" />
    <property name="username" value="${smtp.username}" />
    <property name="password" value="${smtp.password}" />
    <property name="javaMailProperties">
        <props>
            <!-- Use SMTP transport protocol -->
            <prop key="mail.transport.protocol">smtp</prop>
            <!-- Use SMTP-AUTH to authenticate to SMTP server -->
            <prop key="mail.smtp.auth">true</prop>
            <!-- Use TLS to encrypt communication with SMTP server -->
            <prop key="mail.smtp.starttls.enable">true</prop>
            <prop key="mail.debug">true</prop>
        </props>
    </property>
</bean>

<bean id="alertMailMessage" class="org.springframework.mail.SimpleMailMessage">
    <property name="from" value="${alertMailMessage.from}" />
    <property name="to" value="${alertMailMessage.to}" />
    <property name="subject" value="${alertMailMessage.subject}" />
</bean>

<bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!-- one of the properties available; the maximum file size in bytes -->
    <property name="maxUploadSize" value="1000000" />
</bean>


<bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix">
        <value>/WEB-INF/pages/</value>
    </property>
    <property name="suffix">
        <value>.jsp</value>
    </property>
</bean>

<mvc:resources mapping="/**" location="/resources/" />

<mvc:annotation-driven />

<bean id="propertyConfigurer"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="locations">
        <list>
            <value>/WEB-INF/properties/database.properties</value>
            <value>/WEB-INF/properties/smtp.properties</value>
        </list>
    </property>
</bean>

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${jdbc.driver}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.user}" />
    <property name="password" value="${jdbc.password}" />
</bean>

<bean id="sessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan" value="com.example.model" />
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">${hibernate.dialect}</prop>
            <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
            <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
        </props>

    </property>
</bean>


<tx:annotation-driven transaction-manager="transactionManager" />

<bean id="transactionManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>

why this exception is coming on entering invalid email rather than validation has to be performed.

为什么在输入无效电子邮件而不是必须执行验证时出现此异常。

回答by David Lavender

In your controller's addUsermethod, your BindingResultneeds to be immediately after the bean:

在您的控制器addUser方法中，您BindingResult需要紧跟在 bean 之后：

public String addUser(@Valid UserBean userBean, BindingResult bindingResult,
                      Model model, RedirectAttributes redirectAttrs) {
    ...
}