SpringMVC上传文件，批量上传文件-蒲公英云

SpringMVC上传文件，批量上传文件

一：导入相关Jar包

commons-fileupload.jar

commons-io.jar

二：配置web.xml。上载解析器

<!-- 文件上传配置 -->
<bean id="multipartResolver"  class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!-- 设置编码格式 -->  
    <property name="defaultEncoding" value="utf-8"></property> 
    <!-- 设置文件大小 -->  
    <property name="maxUploadSize" value="10485760000"></property>
    <!-- 设置缓冲区大小 -->  
    <property name="maxInMemorySize" value="40960"></property>  
</bean>

三：web页面

<form action="upload.do" enctype="multipart/form-data" method="post">
      文件:<input type="file" name="file"/><input type="submit" value="上传"/>
</form>

四：controller类 @RequestParam(“file”) 这个注解必须有

/**
* spring mvc封装了上传文件  将其封装为一个file对象
* */
@RequestMapping("/upload.do")
public String upload(@RequestParam("file") CommonsMultipartFile file,HttpServletRequest req){
    //获取上传位置
    String path=req.getRealPath("/upload");
    //获取文件名
    String filename=file.getOriginalFilename();
    try {
        InputStream is = file.getInputStream();
        OutputStream os = new FileOutputStream(new File(path,filename));
        int len=0;
        byte[] buffer = new byte[400];
        while((len=is.read(buffer))!=-1){
            os.write(buffer, 0, len);
        }
        os.close();
        is.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return "redirect:index.jsp";
}

五：批量上传web页面

<form action="batch.do" enctype="multipart/form-data" method="post">
      文件1:<input type="file" name="file"/><br>
      文件2:<input type="file" name="file"/><br>
      <input type="submit" value="上传"/>
</form>

六：批量上传controller类

@RequestMapping("/batch.do")
public String batch(@RequestParam("file") CommonsMultipartFile file[],HttpServletRequest req){
    //获取上传位置
    String path=req.getRealPath("/upload");
    for(int i=0;i<file.length;i++){
        //获取文件名
        String filename=file[i].getOriginalFilename();
        try {
            InputStream is = file[i].getInputStream();
           OutputStream os = new FileOutputStream(new File(path,filename));
           int len=0;
           byte[] buffer = new byte[400];
           while((len=is.read(buffer))!=-1){
               os.write(buffer, 0, len);
           }
           os.close();
           is.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return "redirect:index.jsp";
}