我用springmvc实现的文件的上传

在控制层写了一个方法来处理，方法如下：

@RequestMapping(value = "/product_save")
public String saveProduct(HttpServletRequest servletRequest, @ModelAttribute Product product, BindingResult bindingResult,Model model){
    List<MultipartFile>files=product.getImages();

    List<String>fileNames=new ArrayList<String>();

    if(null!=files&&files.size()>0){
        for(MultipartFile multipartFile:files){   
            //获得文件的名字
            String fileName=multipartFile.getOriginalFilename();
            
            fileNames.add(fileName);
            //创造保存文件的文件夹
            File imageFile=new File(servletRequest.getServletContext().getRealPath("/image"),fileName);
            try{
                //保存操作
                multipartFile.transferTo(imageFile);
            }catch (IOException e){
                e.printStackTrace();
            }
        }
    }
    model.addAttribute("product",product);
    return "ProductDetails";
}
ProductDetails为视图名字,在配置文件里为其配置了相应的前缀和后缀，所以这里就省略了

对应的前端页面：

<form action="product_save" method="post" enctype="multipart/form-data">
    <fieldset>
        <legend>Add a Product</legend>
        <p>
            <label for="name">Product Name:</label>
            <input id="name" type="text" name="name"/>
        </p>
        <p>
            <label for="description">Description:</label>
            <input id="description" type="text" name="description"/>
        </p>
        <p>
            <label for="price">Price:</label>
            <input id="price" type="text" name="price"/>
        </p>
        <p>
            <label for="image">Product Image:</label>
            <input type="file" name="image" id="image"/>
        </p>
        <p>
          <input id="reset" type="reset" tabindex="4">
          <input id="submit" type="submit" tabindex="5" value="Add Product">
        </p>
    </fieldset>
</form>


总结一下，上传文件大概就是四步骤
1）获得文件
2）获得文件名
3）新建一个保存文件的文件夹
4）保存调用transfer方法即可

@RequestMapping(value = "/product_save")
public String saveProduct(HttpServletRequest servletRequest, @ModelAttribute Product product, BindingResult bindingResult,Model model){
    List<MultipartFile>files=product.getImages();

    List<String>fileNames=new ArrayList<String>();

    if(null!=files&&files.size()>0){
        for(MultipartFile multipartFile:files){
            String fileName=multipartFile.getOriginalFilename();
            fileNames.add(fileName);

            File imageFile=new File(servletRequest.getServletContext().getRealPath("/image"),fileName);
            try{
                multipartFile.transferTo(imageFile);
            }catch (IOException e){
                e.printStackTrace();
            }
        }
    }
    model.addAttribute("product",product);
    return "ProductDetails";
}