我需要将文件从浏览器上传到服务器。我使用spring 3.2作为我的web框架。春季上传文件问题
所以我配置我的应用程序是这样的。
1 - 我的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<context-param>
<param-name>contextClass</param-name>
<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>racoonsoft.chaos.settings</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>admin/library</welcome-file>
</welcome-file-list>
</web-app>
2 - MainConfig类
@Configuration
@Import({WebConfig.class })
public class MainConfig {
@Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
@Bean
public static ScheduledAnnotationBeanPostProcessor scheduledAnnotationBeanPostProcessor() {
return new ScheduledAnnotationBeanPostProcessor();
}
@Bean
public static StandardServletMultipartResolver multipartResolver() {
StandardServletMultipartResolver resolver = new StandardServletMultipartResolver();
return resolver;
}
}
3 - 控制器来处理多部分上传
@Controller
@MultipartConfig(fileSizeThreshold=1024*1024*2, // 2MB
maxFileSize=1024*1024*10, // 10MB
maxRequestSize=1024*1024*50)
public class FileUpload
{
public static final int UPLOAD_RESULT_OK = 100000;
@Autowired
BookDao book_dao;
@RequestMapping(value = "/admin/library/upload_file", method = RequestMethod.POST)
public String saveFiles(@RequestParam("file-file") MultipartFile file) throws IOException
{
if (!file.isEmpty())
{
byte[] bytes = file.getBytes();
return "redirect:caps/total_fail";
}
else
{
return "redirect:caps/total_fail";
}
}
}
4 - JSP其中i放置我的表格提交档案
...<form method="post" action="/admin/library/upload_file" enctype="multipart/form-data">
<input type="text" name="name"/>
<input type="file" name="file-file"/>
<input type="submit"/>
</form>...
当我提交我的形式,我得到一个异常
org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile parameter 'file-file' is not present
org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:202)
我不知道为什么。当我删除@RequestParam注释时,我得到了我的方法调用,但文件参数= null。 我的问题是什么?
我不知道如何配置它。我需要更改我的web.xml吗? 或者我必须创建自己的Filter扩展MultipartFilter并将其映射到 /admin/library/upload_file? – user2160696
有关配置详细信息,请参阅更新后的答案。 – mthmulders
可悲的是它没有帮助。我添加了这两个部分,但仍然以null作为参数。 – user2160696