NumberFormatException异常时，形式submited去春来控制器

在我目前的Spring项目，当我尝试提交此表：NumberFormatException异常时，形式submited去春来控制器

<form role="form" class="form" action="/Destaque/cadastra" method="post" enctype="multipart/form-data"> 
<field-box> 
    <div> 
    <div>    
     <div> 
     <label>Produto</label><select class="form-control" name="listaDeProdutos[]" multiple="multiple" rows="7"><option value="1">one</option><option value="2">two</option><option value="3">three</option><option value="4">four</option><option value="5">five</option><option value="6">six</option><option value="7">seven</option><option value="8">eight</option><option value="9">nine</option><option value="10">ten</option><option value="11">eleven</option><option value="12">twelve</option></select> 
     </div> 
    </div> 
    </div> 
</field-box> 
<field-box> 
     <label>Titulo</label><input type="text" class="form-control" name="titulo" /> 
</field-box> 
<field-box> 
     <label>Resumo</label><input type="text" class="form-control" name="resumo" /> 
</field-box> 
<field-box> 
     <label>Valor</label><input type="text" class="form-control valida" pattern="[0-9]{2}.[0-9]{2}" name="valor" /> 
</field-box> 
<field-box> 
     <label>Descrição</label><textarea class="summernote" name="descricao"></textarea> 
</field-box> 
<field-box> 
     <label>Capa do destaque</label><input type="file" class="form-control" name="icone" /> 
</field-box> 
<field-box> 
     <label>Validade</label><input type="text" class="form-control valida" pattern="[0-9]{2}/[0-9]{2}/[0-9]{4}" name="validade" /> 
</field-box> 
<field-box> 
     <label>destaque ativo</label><input type="checkbox" name="ativo" /> 
</field-box> 

<button type="submit" class="btn btn-default">Cadastrar</button> 

<div id="yes" class="alert alert-success" role="alert" style="display: none;"> 
    <button type="button" class="close" data-hide="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button> 
    <span class="text">Cadastro efetuado com sucesso</span> 
</div> 

<div id="not" class="alert alert-danger" role="alert" style="display: none;"> 
    <button type="button" class="close" data-hide="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button> 
    <span class="text"></span> 
</div>

这个实体类：

@Entity 
@Form 
@FormPublic 
@Order(value = 5) 
public class Destaque extends Model { 
    @Id 
    @GeneratedValue(strategy=GenerationType.IDENTITY) 
    @Order(value = 1) 
    private Integer id; 

    @ManyToMany 
    @JoinTable(name="listaDeProdutosEmDestaque", joinColumns={@JoinColumn(name="fk_destaque")}, inverseJoinColumns={@JoinColumn(name="fk_produto")}) 
    @LazyCollection(LazyCollectionOption.FALSE) 
    @Order(value = 2) 
    @Select(label = "Produto", classe=Produto.class) 
    private List<Produto> listaDeProdutos; 

    @Order(value = 3) 
    @Input(label = "Titulo") 
    @Column(length = 100) 
    private String titulo; 

    @Order(value = 4) 
    @Input(label = "Resumo") 
    @Column(length = 100) 
    private String resumo; 

    @Order(value = 5) 
    @Input(label = "Valor", pattern = "[0-9]{2}.[0-9]{2}") 
    private Float valor; 

    @Order(value = 6) 
    @Textarea(label = "Descrição") 
    @Column(length = 131072) 
    private String descricao; 

    @OneToOne 
    @JoinColumn(name = "banner") 
    @Order(value = 7) 
    @Input(label = "Capa do destaque", type="file") 
    private Picture icone; 

    @Order(value = 8) 
    @Input(label = "Validade", pattern = "[0-9]{2}/[0-9]{2}/[0-9]{4}") 
    private Date validade; 

    @Order(value = 9) 
    @Checkbox(label = "destaque ativo") 
    private Boolean ativo; 
}

我得到此错误：

java.lang.NumberFormatException: For input string: "" 
     at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) 
     at java.lang.Integer.parseInt(Integer.java:504) 
     at java.lang.Integer.parseInt(Integer.java:527) 
     at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:993) 
     at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:926) 
     at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:95) 
     at org.springframework.validation.DataBinder.applyPropertyValues(DataBinder.java:749) 
     at org.springframework.validation.DataBinder.doBind(DataBinder.java:645) 
     at org.springframework.web.bind.WebDataBinder.doBind(WebDataBinder.java:189) 
     at org.springframework.web.bind.ServletRequestDataBinder.bind(ServletRequestDataBinder.java:106) 
     at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.bindRequestParameters(ServletModelAttributeMethodProcessor.java:150) 
     at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:110) 
     at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:77) 
     at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162) 
     at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:129) 
     at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 
     at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) 
     at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) 
     at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) 
     at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) 
     at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) 
     at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
     at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:644) 
     at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) 
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) 
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
     at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) 
     at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:146) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57) 
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) 
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
     at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
     at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 
     at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) 
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) 
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) 
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) 
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537) 
     at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085) 
     at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) 
     at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222) 
     at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556) 
     at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
     at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
     at java.lang.Thread.run(Thread.java:745)

ANYONE可以看到这里有什么问题吗？

PS：提交由该方法处理：

控制器：

@RequestMapping(value = "cadastra", method=RequestMethod.POST) 
    @ResponseBody 
    public void cadastra(@ModelAttribute("object") E object, BindingResult result, @RequestParam(value="icone", required=false) MultipartFile icone, @RequestParam(value="fotos", required=false) MultipartFile fotos[], @RequestParam(value="arquivo", required=false) MultipartFile arquivo[]) throws Exception { 
    serv.cadastra(object); 
    serv.upload(object, icone); 
    serv.upload_multiplo(object, fotos); 
    serv.upload_jar(object, arquivo); 
    }

服务

@PreAuthorize("hasPermission(#user, 'cadastra_'+#this.this.name)") 
    @Transactional 
    public void cadastra(E object) { 
    dao.insert(object); 
    }

DAO类：

public void insert(E object) { 
    EntityManager entityManager = getEntityManager(); 
    entityManager.getTransaction().begin(); 
    entityManager.persist(object); 
    entityManager.getTransaction().commit(); 
    entityManager.close(); 
}

来源

2015-01-03 Kleber Mota

我设法解决这个问题，增加这个属性编辑器类项目：

@Component 
public class ProdutoEditor extends PropertyEditorSupport { 
    @Override 
    public void setAsText(String text) { 
    if (!text.equals("")) { 
     ProdutoService serv = new ProdutoService(); 
     ApplicationContextHolder.getContext().getAutowireCapableBeanFactory().autowireBean(serv); 
     Produto produto = serv.getObject(text); 
     setValue(produto); 
    } else { 
     setValue(null); 
    } 
    } 
}

，与此选择代码的工作：

<select class="form-control" name="listaDeProdutos" multiple="multiple" rows="7"> 
    ... 
    <option value="1">one</option> 
    ... 
</select>

来源

2015-01-14 23:08:22

基于堆栈上跟踪（java.lang.NumberFormatException: For input string: ""），看起来发生了什么是当您提交表单时，表单的一个数字输入仍然是空白的，所以当您尝试将字符串输入转换为数字时，它会抛出错误。

这可以通过将表单的数字输入默认为一个数字（例如零）来修复，以便表单不会被提交空数字输入。

来源

2015-01-03 04:07:59 Tsengsation

但我填写表格的所有字段前提交。也许应用程序缺少一些值？ –

如果没有更多信息很难说，但纯粹基于堆栈跟踪，您将绑定一个双值到某些表单输入，并且错误是由于输入为空。如果表单中的所有数字输入都不为空（即“”），那么我可以想到的另一种可能性是，在读取值之后，您将其清除为“”，然后双向绑定会抛出错误，因为它会尝试更新该值。 – Tsengsation

NumberFormatException异常时，形式submited去春来控制器

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