在Spring MVC中使用PUT和DELETE方法

Z时代
2024-01-10
分类：问答

我正在尝试在Spring MVC控制器（版本3.0.2）中使用RequestMethod.PUT和RequestMethod.DELETE。在Spring控制器类中，有三种与URL映射的方法，如下所示（分别是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，该GET方法将很明显地被调用，但是在所有其他情况下（提交页面时），唯一要调用POST的方法RequestMethod.PUT是，永远不会调用用指定的方法。

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）方法永远不会调用（没有异常或错误）。我在这里想念什么？

更新：

通过以下配置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>

它将引发以下异常。

org.springframework.beans.factory.NoSuchBeanDefinitionException：未定义名为“ filterMultipartResolver”的bean

其中的名称dispatcher是Servlet的名称- org.springframework.web.servlet.DispatcherServlet如下已在web.xml中进行了映射。

<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？在过滤器HiddenHttpMethodFilter需要我们自己的扩展来实现OncePerRequestFilter类似所示的位置？（这是一个内置的类）