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控制器类中有三个映射方法,如下所示(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";
}
加载页面时,GET
方法被调用为显而易见但在所有其他情况下(提交页面时),唯一要调用的方法是POST
,指定的方法永远不会调用RequestMethod.PUT
。
Spring表单只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
(我的情况为dispatcher-servlet.xml
)中,我添加了对CommonsMultipartResolver
的引用:
<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>
永远不会调用PUT
(和DELETE
)方法(没有异常或错误)。我在这里缺少什么?
更新:
在web.xml
中使用以下配置,
<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>
会引发以下异常。
org.springframework.beans.factory.NoSuchBeanDefinitionException:没有 名为'filterMultipartResolver'的bean已定义
名称dispatcher
是Servlet的名称 - org.springframework.web.servlet.DispatcherServlet
已经在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HiddenHttpMethodFilter
是否需要在我们自己的OncePerRequestFilter
上展示here之类的内容? (这是一个内置的课程)
列出了重点:here。
答案 0 :(得分:15)
大多数浏览器不支持HTML表单中的action=PUT
。他们只会发送POST
个请求。 HiddenHttpMethodFilter可以帮助您解决问题,但您必须在表单中包含隐藏字段_method=PUT
。如果您使用spring:form taglib,这将自动为您完成,但您的示例似乎使用纯HTML。
NoSuchBeanDefinitionException
很可能是一个无关的问题。
答案 1 :(得分:1)
您应该更改配置。
<servlet-name>/*</servlet-name>
到
<servlet-name>[dispatch servlet name]</servlet-name>