Question

我有一个pojo，其中包含图像列表。在保存数据时，我没有选择要保存的任何图像，它向我返回了控制器中的类型未命中匹配错误。我想要对包含多部分文件的图像列表进行错误处理。我该怎么办？

*****************************错误***************** ************************ [http-nio-8087-exec-11]错误com.iconicus.error.restapp.RestResponseEntityExceptionHandler-400状态码 org.springframework.validation.BindException：org.springframework.validation.BeanPropertyBindingResult：2个错误字段'imageses [0] .productimage'上的对象'productform'中的字段错误：拒绝的值[];代码[typeMismatch.productform.imageses [0] .productimage，typeMismatch.productform.imageses.productimage，typeMismatch.imageses [0] .productimage，typeMismatch.imageses.productimage，typeMismatch.productimage，typeMismatch.org.springframework.web.multipart。 MultipartFile，typeMismatch];参数[org.springframework.context.support.DefaultMessageSourceResolvable：代码[productform.imageses [0] .productimage，imageses [0] .productimage];参数[];默认消息[imageses [0] .productimage]];默认消息[未能将属性'imageses [0] .productimage'的类型[java.lang.String]的属性值转换为所需的类型[org.springframework.web.multipart.MultipartFile]；嵌套异常是java.lang.IllegalStateException：无法将[java.lang.String]类型的值转换为属性“ productimage”的所需类型[org.springframework.web.multipart.MultipartFile]：找不到匹配的编辑器或转换策略] 字段'imageses [1] .productimage'上的对象'productform'中的字段错误：拒绝的值[];代码[typeMismatch.productform.imageses [1] .productimage，typeMismatch.productform.imageses.productimage，typeMismatch.imageses [1] .productimage，typeMismatch.imageses.productimage，typeMismatch.productimage，typeMismatch.org.springframework.web.multipart。 MultipartFile，typeMismatch];参数[org.springframework.context.support.DefaultMessageSourceResolvable：代码[productform.imageses [1] .productimage，imageses [1] .productimage];参数[];默认消息[imageses [1] .productimage]];默认消息[未能将属性'imageses [1] .productimage'的类型[java.lang.String]的属性值转换为所需的类型[org.springframework.web.multipart.MultipartFile]；嵌套异常是java.lang.IllegalStateException：无法将[java.lang.String]类型的值转换为属性“ productimage”的所需类型[org.springframework.web.multipart.MultipartFile]：找不到匹配的编辑器或转换策略] 在org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument（ModelAttributeMethodProcessor.java:118）在org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument（HandlerMethodArgumentResolverComposite.java:121）在org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues（InvocableHandlerMethod.java:161）在org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:128）在org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle（ServletInvocableHandlerMethod.java:114）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod（RequestMappingHandlerAdapter.java:827）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:738）在org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:85）在org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:963）在org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:897）在org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:970）在org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:872）在javax.servlet.http.HttpServlet.service（HttpServlet.java:661）在org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:846）在javax.servlet.http.HttpServlet.service（HttpServlet.java:742）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:231）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在com.iconicus.app.filter.FebnexFilter.doFilter（FebnexFilter.java:112）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:317）在org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke（FilterSecurityInterceptor.java:127）在org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter（FilterSecurityInterceptor.java:91）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.access.ExceptionTranslationFilter.doFilter（ExceptionTranslationFilter.java:115）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.session.SessionManagementFilter.doFilter（SessionManagementFilter.java:137）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter（AnonymousAuthenticationFilter.java:111）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter（SecurityContextHolderAwareRequestFilter.java:169）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter（RequestCacheAwareFilter.java:63）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter（AbstractAuthenticationProcessingFilter.java:200）处在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter（AbstractAuthenticationProcessingFilter.java:200）处在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.authentication.logout.LogoutFilter.doFilter（LogoutFilter.java:121）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal（HeaderWriterFilter.java:66）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter（SecurityContextPersistenceFilter.java:105）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal（WebAsyncManagerIntegrationFilter.java:56）处在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.FilterChainProxy.doFilterInternal（FilterChainProxy.java:214）在org.springframework.security.web.FilterChainProxy.doFilter（FilterChainProxy.java:177）在org.springframework.security.web.debug.DebugFilter.invokeWithWrappedRequest（DebugFilter.java:90）在org.springframework.security.web.debug.DebugFilter.doFilter（DebugFilter.java:77）在org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate（DelegatingFilterProxy.java:346）在org.springframework.web.filter.DelegatingFilterProxy.doFilter（DelegatingFilterProxy.java:262）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:199）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:478）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:140）在org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:81）在org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:650）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:87）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:342）在org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:803）在org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:66）在org.apache.coyote.AbstractProtocol $ ConnectionHandler.process（AbstractProtocol.java:868）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1459）在org.apache.tomcat.util.net.SocketProcessorBase.run（SocketProcessorBase.java:49）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）在org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:748）

*************************************控制器********* ******************

@RequestMapping(value = {"/updateimages"}, method = RequestMethod.POST)
@ResponseBody
public ApiResponse updateImages(@ModelAttribute("productform") Product productForm, HttpServletRequest request, HttpServletResponse response) throws ClassNotFoundException, SQLException, IOException {
    int responsedata = 0;
    try {
        productService.updateProductImages(productForm);
    } catch (ClassNotFoundException | SQLException ex) {
        logger.error(ex.getMessage(), ex);
    }
    return new ApiResponse(HttpStatus.OK, "Product Updated", String.valueOf(productForm.getId()), true);
}

***********************************产品（POJO）******** **************

公共类产品{

private String id;
private String productname;
private String displayname;
private String productprice;
private String category;
private String subcategory;
private String categoryname;
private String subcategoryname;
private String taxcategory;
private String productweight;
private String description;
private String productsortorder;
private String productsku;
private String productshippingweight;
private String fixshippinginindia;
private String fixshippingworldwide;
private String allowcod;
private String visible;
private String active;
private String allowpurchaseind;
private String allowpurchaseworldwide;
private String freeshippinginindia;
private String freeshippingworldwide;
private String shippingasperweigth;
private String[] tags;
private ProductSeo productSeo;
private ProductOption productOption;
private List<ProductOptionSet> optionSets;
private List<ProductImages> imageses;
private List<ProductGroupTag> groupTag;
private List<ProductSeoDetail> seodetails;
private List<NoteForm> noteForm;

}

****************************产品图片（POJO）************** **********

公共类ProductImages {

private String id;
private String productid;
private MultipartFile productimage;
private String productimagename;
private String imagetitle;
private String imagedescription;
private String imageseotitle;
private String imageseokeyword;
private String imageseodescription;
private String fileaction;

}

Answer 1

检查是否已启用MultipartResolver。您可以使用CommonsMultipartResolver处理文件上传。然后下面的代码片段就可以满足需要：

public String fileHandleController(HttpServletRequest request, @ModelAttribute Pojo pojo) {
    //check your request is multipart
    String contentType = request.getContentType();
    if(contentType != null && contentType.indexOf("multipart/form-data") > -1) {
        MultipartFile multipartFile = pojo.getFile();
        if(multipartFile.getSize() > 0){
            //to do
        }
    }

}

如何要求提供虚假的多部分文件列表？

1 个答案: