如何使setMultipartConfig適用於動態添加的servlet？

當我將setMultipartConfig調用到動態添加的servlet時，request.getParts();應該包含上傳的文件時返回一個空集合。如何使setMultipartConfig適用於動態添加的servlet？

JSP

<!DOCTYPE html> 
<html> 
    <head> 
     <meta charset="utf-8"> 
    </head> 
    <body> 
    <form action="/{context here}/hello" method="post" enctype="multipart/form-data"> 
     <input type="file" name="avatar"> 
     <button>Go</button> 
    </form> 
    </body> 
</html>

該servlet：

@WebServlet("/hello") 
public class HelloServlet extends HttpServlet { 
    private static final long serialVersionUID = 1; 

    @Override 
    protected void doGet(HttpServletRequest request, HttpServletResponse response) 
    throws ServletException, IOException { 
     request.getRequestDispatcher("/hello.jsp").forward(request, response); 
    } 
    @Override 
    protected void doPost(HttpServletRequest request, HttpServletResponse response) 
    throws IOException, ServletException { 
     // Here an empty collection even if I do select a file... 
     request.getParts(); 
    } 
}

要添加的偵聽動態

@WebListener 
public class HelloListener implements ServletContextListener { 
    @Override 
    public void contextInitialized(ServletContextEvent event) { 
     Dynamic registered = event.getServletContext().addServlet("hello", HelloServlet.class); 
     registered.addMapping("/hello"); 
     registered.setMultipartConfig(getMultiPartConfig()); 
    } 
    @Override 
    public void contextDestroyed(ServletContextEvent event) {} 

    private MultipartConfigElement getMultiPartConfig() { 
     String location = ""; 
     long maxFileSize = -1; 
     long maxRequestSize = -1; 
     int fileSizeThreshold = 0; 
     return new MultipartConfigElement(
      location, 
      maxFileSize, 
      maxRequestSize, 
      fileSizeThreshold 
     ); 
    } 
}

如何讓多配置與dinamically添加servlet來工作？

使用：的JBoss EAP 6.1

來源

2013-10-10 Fagner Brack

這似乎是'@WebServlet（「/你好」）'聲明，想通了這一點正確，然後再發布... –

卸下@WebServlet("/hello")聲明解決了這個問題

來源

2013-10-11 10:02:17

如何使setMultipartConfig適用於動態添加的servlet？

回答

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