springmvc文件上傳下載亂碼

springmvc文件上傳下載亂碼

一、設置文件解析器

<!-- 多媒體文件解析器 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 最大允許上傳大小5MB -->
     <property name="maxUploadSize" value="5242880" />
     <property name="maxInMemorySize" value="4096" />
     <property name="defaultEncoding" value="UTF-8"></property>
    </bean>

二、web.xml中設置過濾器

配置過濾器(配置characterEncodingFilter類中的encoding(設置request),forceEncoding(設置response))

  <filter>
    <!--過濾器名和所屬類名-->
    <filter-name>CharacterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <!--request編碼-->
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>

    <init-param>
      <!--response編碼-->
      <param-name>focreEncoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
    <!--過濾器映射名，過濾類型-->
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

三、前端jsp中form表單設置enctype=“multipart/form-data”

<form action="user/fileUpload" method="post" enctype="multipart/form-data">  
    <input type="file" name="files" />  
    <input type="submit" value="上傳" />  
</form>