我不知道這個例外是什麼？

Question

這是我的代碼調度

@RequestMapping(value="blogWrite", method=RequestMethod.POST) 
public ModelAndView writeBlog(BlogText blogText, MultipartFile[] files, HttpSession session) { 
    System.out.println("writeBlog() 실행"); 
    ModelAndView modelAndView = new ModelAndView(); 
    modelAndView.setViewName("/Blog/BlogPersonal/blogPersonal"); 
    MemberInfo memberInfo = (MemberInfo)session.getAttribute("session"); 

    final String path = "C:/Users/Dongjoo/Downloads/fileUpload/"+memberInfo.getMemberId(); 

    logger.info("path:{}",path); 

    blogService.addBlogText(modelAndView,blogText,files,path); 

    return modelAndView; 
} 

這是我的業務層代碼

@Autowired 
private BlogDAO blogDAO; 

public MemberInfo getMemberLogin(MemberInfo memberInfo) {  
    MemberInfo takeMemberInfo = blogDAO.memberLogin(memberInfo); 
    return takeMemberInfo; 
} 
public ModelAndView addBlogText(ModelAndView modelAndView, BlogText blogText, MultipartFile[] files, final String path) { 
    System.out.println("addBlogText() 실행"); 
    for(MultipartFile file : files){ 
     File newFile = new File(path+"/"+file.getOriginalFilename()); 
     try { 
      FileUtils.writeByteArrayToFile(newFile, file.getBytes()); 
      System.out.println("파일 업로드 성공!"); 
      modelAndView.addObject("message", "파일업로드 성공!"); 
     } catch (IOException e) { 
      e.printStackTrace(); 
      System.out.println("파일 업로드 실패!"); 
      modelAndView.addObject("message", "파일업로드 실패!"); 
     }   
    } 
    return modelAndView; 
} 

和web.xml

<context-param> 
    <param-name>contextConfigLocation</param-name> 
    <param-value>/WEB-INF/spring/root-context.xml</param-value> 
</context-param> 

<listener> 
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
</listener> 

<servlet> 
    <servlet-name>appServlet</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <init-param> 
    <param-name>contextConfigLocation</param-name> 
    <param-value> 
     /WEB-INF/spring/appServlet/servlet-context.xml 
    </param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
</servlet> 
<servlet-mapping> 
    <servlet-name>appServlet</servlet-name> 
    <url-pattern>/</url-pattern> 
</servlet-mapping> 

<filter> 
    <display-name>CharacterEncodingFilter</display-name> 
    <filter-name>CharacterEncodingFilter</filter-name> 
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 
    <init-param> 
    <description></description> 
    <param-name>encoding</param-name> 
    <param-value>UTF-8</param-value> 
    </init-param> 
</filter> 

而且pom.xml的

<dependency> 
     <groupId>commons-fileupload</groupId> 
     <artifactId>commons-fileupload</artifactId> 
     <version>1.3</version> 
    </dependency> 

而且writeForm.jsp

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script> 
    <script> 
     $(document).ready(function() { 
      var day = 1; 
      $('#addBtn').click(function() { 
       var tagAdd = ''; 
       console.log('일차 : '+day); 

       if(day==1) { 
        tagAdd += '<div class="dayAndTimeDiv">'; 
         tagAdd += '<input type="hidden" class="dayRequired" name="dayRequired" value="'+day+'"/>'; 
         tagAdd += '<span class="dayRequiredShow">'+day+'일차</span>'; 
         tagAdd += '<input type="text" class="timeRequired" name="timeRequired" size="2"/>'; 
         tagAdd += '<span class="timeRequiredDiv"> 시간</span>'; 
         tagAdd += '</div>'; 
        tagAdd += '<div class="imageArea">'; 
         tagAdd += '<input type="file" id="blogTextImage" name="blogTextImage"/><br/>'; 
         tagAdd += '<textarea rows="20" cols="50" id="blogTextContent" name="blogTextContent"></textarea>'; 
        tagAdd += '</div>'; 
        $('#writeArea').append(tagAdd); 
        console.log(tagAdd); 
       } 
       else { 
        /* 지금 태그 추가/삭제가 안 된다. 일단 이것은 나중으로 미루고... */ 
        $('#addBtnDiv').remove(); 
        tagAdd = '<input type="button" id="addBtn"/>'; 
        $('#addBtnDiv').append(tagAdd); 
        tagAdd = ''; 
        tagAdd += '<div class="dayAndTimeDiv">'; 
        tagAdd += '<input type="hidden" class="dayRequired" name="dayRequired" value="'+day+'"/>'; 
        tagAdd += '<span class="dayRequiredShow">'+day+'일차</span>'; 
        tagAdd += '<input type="text" class="timeRequired" name="timeRequired" size="2"/>'; 
        tagAdd += '<span class="timeRequiredDiv"> 시간</span>'; 
        tagAdd += '</div>'; 
        tagAdd += '<div class="imageArea">'; 
         tagAdd += '<input type="file" id="blogTextImage" name="blogTextImage" multiple="multiple"/><br/>'; 
         tagAdd += '<textarea rows="20" cols="50" id="blogTextContent" name="blogTextContent"></textarea>'; 
        tagAdd += '</div>';     
        $('#writeArea').append(tagAdd); 
        console.log(tagAdd); 
       } 
       day++; 
      }); 
      $('#insertBlogTextBtn').click(function() { 
       $('form').submit(); 
      }); 
     }); 
    </script> 
</head> 
<body> 
    <div id="memberNameDiv"> 
     <span id="memberName">${session.memberName}</span> 
    </div> 
    <div> 
     <hr> 
    </div> 
<div id="blogTextArea"> 
    <form action="/blogWrite" method="post" enctype="multipart/form-data"> 
     <div id="categoryDiv"> 
      <span id="categoryHover">카테고리</span> 
     </div> 
     <div id="addBtnDiv"> 
      <input type="button" id="addBtn"/> 
     </div> 
     <br/> 
     <div id="writeArea"> 


     </div> 
    </form> 
</div> 
<div id="buttonArea"> 
    <input type="button" id="insertBlogTextBtn" name="insertBlogTextBtn" value="글등록"/> 
    <input type="reset" id="cancelBtn" name="cancelBtn" value="취소"/> 
</div> 

我沒有爲將數據放入數據庫

我希望把一些文件讓DAO的部分呢。

但我有異常（錯誤）

下面

：

Servlet.service() for servlet [appServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [[Lorg.springframework.web.multipart.MultipartFile;]: No default constructor found; nested exception is java.lang.NoSuchMethodException: [Lorg.springframework.web.multipart.MultipartFile;.<init>()] with root cause 
java.lang.NoSuchMethodException: [Lorg.springframework.web.multipart.MultipartFile;.<init>() 
    at java.lang.Class.getConstructor0(Class.java:3082) 
    at java.lang.Class.getDeclaredConstructor(Class.java:2178) 
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:104) 
    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:132) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:81) 
    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:103) 
    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:648) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    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:502) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521) 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Thread.java:745) 

WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/wpad.dat] in DispatcherServlet with name 'appServlet' 

請幫助我！（請忽略朝鮮語我寫的）的serlvet中

Answer 1

申報是CommonsMultipartResolver豆組態。

例如。

For XML config: 
-------------- 
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 
    <property name="maxUploadSize"> 
     <value>2097152</value> <!-- 2MB --> 
    </property> 
</bean> 

For java config: 
--------------- 
@Bean 
public CommonsMultipartResolver multipartResolver() { 
    return new CommonsMultipartResolver(); 
} 


In Controller annotation use like : 
@RequestParam("photo") MultipartFile file