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Problemas com MultpartFile

Boa tarde, estou com 2 problemas:

1- Fiz a implementação de configuração do MultipartFile

Minha classe de configuração do Sevlet:

    package br.com.gerenciador.config;

import javax.servlet.MultipartConfigElement;
import javax.servlet.ServletRegistration.Dynamic;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class AppConfig extends AbstractAnnotationConfigDispatcherServletInitializer{

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return null;
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[]{AppConfigMVC.class, JPAConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }


    @Override
    protected void customizeRegistration(Dynamic registration) {
        registration.setMultipartConfig(new MultipartConfigElement(""));
    }

}

Minha classe de configuração dos Beans:

package br.com.gerenciador.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.format.datetime.DateFormatter;
import org.springframework.format.datetime.DateFormatterRegistrar;
import org.springframework.format.support.DefaultFormattingConversionService;
import org.springframework.format.support.FormattingConversionService;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.support.StandardServletMultipartResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import com.gerenciador.dao.DAONewsImpl;

import br.com.gerenciador.controllers.HomeController;
import br.com.gerenciador.rn.RNAddNews;
import br.com.gerenciador.service.Facade;

@EnableWebMvc
@ComponentScan(basePackageClasses={
        HomeController.class,
        DAONewsImpl.class,
        RNAddNews.class,
        Facade.class
        })
public class AppConfigMVC extends WebMvcConfigurerAdapter{

    @Bean
    public InternalResourceViewResolver viewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");

        return resolver;
    }


    @Bean
    public FormattingConversionService serviceConversionDate() {
        /**
         * Responsável pelo serviço de conversão
         */
        DefaultFormattingConversionService conversionService = new DefaultFormattingConversionService();

        /**
         * Registra o formato da data para conversão
         */
        DateFormatterRegistrar registerFormat = new DateFormatterRegistrar();
        registerFormat.setFormatter(new DateFormatter("dd/MM/yyyy"));
        registerFormat.registerFormatters(conversionService);


        return conversionService;

    }

    @Bean
    public MultipartResolver multipartResolver(){
        return new StandardServletMultipartResolver();
    }



    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }


}

Até ai quando tento usar o MultpartFile na minha classe de controle para imprimir o nome do meu arquivo ele está ainda continua dando

NullPointExeption

SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/gerenciador] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException
    at br.com.gerenciador.controllers.NewsController.gravar(NewsController.java:25)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:220)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:509)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1104)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1524)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

Daí eu pensei pq não tinha colocado oenctype="multipart/form-data" na minha JSP, porém quando coloco, ele da erro 400

HTTP Status 400 -

type Status report

message

description The request sent by the client was syntactically incorrect.

Apache Tomcat/8.0.41

MInha JSP

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@taglib uri="http://www.springframework.org/tags" prefix="s" %>  
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
      <!--Import Google Icon Font-->
      <link href="http://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
      <!--Import materialize.css-->
      <link type="text/css" rel="stylesheet" href="../resources/css/materialize.min.css"  media="screen,projection"/>

      <!--Let browser know website is optimized for mobile-->
      <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
      <meta http-equiv="Content-Type" content="text/html; UTF-8">


    <title>Gerenciador</title>
</head>
<body>
    <h1 class="center">News Add</h1>

        <div class="container">
            <form:form action="${s:mvcUrl('NC#gravar').build()}" enctype="multipart/form-data" method="POST">
                <div class="row">
                    <div class="input-field col s12 m12 l12">
                        <input  id="title" type="text" name="title">
                        <label for="title">Title</label>
                    </div>
                    <div class="input-field col s12 m12 l12">
                        <textarea id="textnews" class="materialize-textarea" name="text" rows="50" cols="100"></textarea>
                        <label for="textnews">Content</label>
                    </div>


                    <div class="input-field col s12 m12 l12">    
                        <input id="video" type="text" name="linkVideo">
                        <label for="video">Video(YouTube)</label>
                    </div>    
                    <div class="col s12 m12 l12" style="padding-bottom: 40px; padding-top: 20px;">    
                        <input id="file" type="file" name="pathImage">
                    </div>                    
                    <button type="submit" class="waves-effect waves-light btn">Add</button>
                </div>
            </form:form>
        </div>

      <!--Import jQuery before materialize.js-->
      <script type="text/javascript" src="../resources/js/jquery-3.1.1.js"></script>
      <script type="text/javascript" src="../resources/js/materialize.min.js"></script>
</body>
</html>

Meu Controller

package br.com.gerenciador.controllers;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;

import com.gerenciador.models.News;

@Controller
@RequestMapping("/news")
public class NewsController {

    /*@Autowired
    private Facade facade;*/

    @RequestMapping(value = "/add", method=RequestMethod.GET)
    public String formCadastrar(){
        return "news/add";
    }

    @RequestMapping(value = "/gravar", method=RequestMethod.POST)
    public String gravar(MultipartFile file, News pNews){

        System.out.println("File: "+file.getOriginalFilename());
        System.out.println(pNews);
        //facade.addNews(pNews);
        return "news/adicionado";
    }

}
2 respostas
solução!

Tente mudar o name do seu input file para que fique com o mesmo nome do parâmetro( do tipo MultipartFile) do seu método gravar no controller.

Caramba Carlos, muito obrigado era isso mesmo =D Valeu !!!!