我正在尝试在 Spring MVC 控制器(版本 3.0.2)中使用RequestMethod.PUT
和。RequestMethod.DELETE
Spring 控制器类中有如下三种方法映射到一个 URL (分别为 PUT、GET 和 POST,仅用于演示目的)。
@RequestMapping(method = {RequestMethod.PUT}, value = {"admin_side/Temp"}, headers = {"content-type=multipart/form-data"})
public String update(@ModelAttribute("tempBean") TempBean tempBean, BindingResult error, Map model, HttpServletRequest request, HttpServletResponse response) {
if (ServletFileUpload.isMultipartContent(request)) {
System.out.println("true");
}
System.out.println("Request method PUT");
return "admin_side/Temp";
}
@RequestMapping(method = {RequestMethod.GET}, value = {"admin_side/Temp"})
public String showForm(@ModelAttribute("tempBean") TempBean tempBean, BindingResult error, Map model, HttpServletRequest request, HttpServletResponse response) {
System.out.println("Request method GET");
return "admin_side/Temp";
}
@RequestMapping(method = {RequestMethod.POST}, value = {"admin_side/Temp"})
public String onSubmit(@ModelAttribute("tempBean") TempBean tempBean, BindingResult error, Map model, HttpServletRequest request, HttpServletResponse response) {
System.out.println("Request method POST");
return "admin_side/Temp";
}
当页面被加载时,该GET
方法被调用是显而易见的,但在所有其他情况下(当页面被提交时),唯一被调用的方法是POST
,指定的方法RequestMethod.PUT
永远不会被调用。
Spring 表单仅包含一个提交按钮和一个图像浏览器,
<form:form id="mainForm"
name="mainForm"
method="PUT"
action="Temp.htm"
enctype="multipart/form-data"
commandName="tempBean">
<input type="file" id="myFile" name="myFile"/>
<input type="submit" id="btnSubmit" name="btnSubmit" value="Submit"/>
</form:form>
生成的HTML如下,
<form id="mainForm"
name="mainForm"
action="Temp.htm"
method="post"
enctype="multipart/form-data">
<input type="hidden" name="_method" value="PUT"/>
<!--This hidden field is implicitly included-->
<input type="file" id="myFile" name="myFile"/>
<input type="submit" id="btnSubmit" name="btnSubmit" value="Submit"/>
</form>
在我的spring-config.xml
(dispatcher-servlet.xml
就我而言)中,我添加了对以下内容的引用CommonsMultipartResolver
:
<bean id="filterMultipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
在我的web.xml
文件中,HiddenHttpMethodFilter
配置如下,
<filter>
<filter-name>MultipartFilter</filter-name>
<filter-class>org.springframework.web.multipart.support.MultipartFilter</filter-class>
<init-param>
<param-name>multipartResolverBeanName</param-name>
<param-value>filterMultipartResolver</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>MultipartFilter</filter-name>
<servlet-name>/*</servlet-name>
</filter-mapping>
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<servlet-name>/*</servlet-name>
</filter-mapping>
( PUT
and DELETE
too) 方法永远不会被调用(没有异常或错误)。我在这里想念什么?
更新 :
使用以下配置web.xml
,
<filter>
<filter-name>MultipartFilter</filter-name>
<filter-class>org.springframework.web.multipart.support.MultipartFilter</filter-class>
<init-param> <!-- Makes no difference, if excluded. -->
<param-name>multipartResolverBeanName</param-name>
<param-value>filterMultipartResolver</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>MultipartFilter</filter-name>
<servlet-name>dispatcher</servlet-name> <!--Changed from /* to dispatcher-->
</filter-mapping>
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<servlet-name>dispatcher</servlet-name> <!--Changed from /* to dispatcher-->
</filter-mapping>
它引发以下异常。
org.springframework.beans.factory.NoSuchBeanDefinitionException:没有定义名为“filterMultipartResolver”的bean
其中名称dispatcher
是 Servlet 的名称 -org.springframework.web.servlet.DispatcherServlet
已在 web.xml 中映射,如下所示。
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
我不确定还需要什么?过滤器是否HiddenHttpMethodFilter
需要在我们自己的扩展中实现,OncePerRequestFilter
例如此处显示的过滤器?(它是一个内置类)
此处列出了要点。