用 Spring MVC 寫文件上傳,解析。但是怎麼都不成功。
Required MultipartFile parameter ‘file’ is not present, syntactical error.
折騰了一個上午,才發現是在 web.xml 裏面,對spring-mvc 的 Servlet 配置時,要打開 Mulitpart 。否則,Tomcat 不發送 Multipart 對象。
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class>
<init-param>
<param-name>ContextConfigLocation</param-name>
<param-value>/WEB-INF/config/spring.xml</param-value>
</init-param>
<init-param>
<param-name>throwExceptionIfNoHandlerFound</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<multipart-config>
<max-file-size>10485760</max-file-size>
<max-request-size>20485760</max-request-size>
<file-size-threshold>10485760</file-size-threshold>
</multipart-config>
</servlet>