java - 如何将文件从表单复制到我的根 Web 应用程序 Java EE

Question

我有一个产品表单如下:

<form id="addProduct" method="post" action="createProduct" enctype="multipart/form-data">
    <input type="text" name="productName">
    <input type="file" name="productImage">
    <input type="submit">
</form>

这是我的(几乎)空的操作:

@Action("/createProduct")
@ResultPath("/")
@Result(location = "jsp/board.jsp")
public class CreateAction extends ActionSupport {

    private Integer id;

    @Autowired
    private UserDao userDao;
    @Autowired
    private Product product;
    @Autowired
    private Supplier supplier;

    private List<Product> products;

    public String execute() {


        return "success";
    }

我想复制在应用程序根目录中输入的文件。我怎样才能在我的 Action 中做到这一点？

理想情况下，我还想将文件名和 URL 存储在变量中。

Answer 1

尝试在操作类中为字段 productName 和 productImage 创建 getter 和 setter，并在 execute 方法上添加 @Action:

   public class CreateAction extends ActionSupport {

   private File productImage;
   private String myFileContentType;
   private String myFileFileName;
   private String destPath;

   @Action("/createProduct")
   public String execute() {

  destPath = "destination file folder";

  try{

     File destFile  = new File(destPath, myFileFileName);
     FileUtils.copyFile(productImage, destFile);

     }catch(IOException e){
     e.printStackTrace();
      }
    return "success";
   } 
   public File getProductImage() {
      return productImage;
    }
     public void setProductImage(File productImage) {
       this.productImage= productImage;
       }
      public String getMyFileContentType() {
      return myFileContentType;
     }
   public void setMyFileContentType(String myFileContentType) {
      this.myFileContentType = myFileContentType;
     }
    public String getMyFileFileName() {
       return myFileFileName;
      }
    public void setMyFileFileName(String myFileFileName) {
       this.myFileFileName = myFileFileName;
      }

   }

在表单中尝试使用post方法。