upload - 如何将 FileUploadInterceptor 与 struts2 约定插件一起使用

Question

我正在尝试通过注释在操作上设置 FileUploadInterceptor ：

@Namespace("/")
@ParentPackage("my-package")
@Result(name = "success", location = "/WEB-INF/jsp/result.jsp")
@InterceptorRef("fileUpload")
public class UploadAction extends ActionSupport {

  private File upload;
  private String uploadContentType;
  private String uploadFileName;

  public void setUpload(File upload) {
    this.upload = upload;
  }
  public void setUploadContentType(String uploadContentType) {
    this.uploadContentType = uploadContentType;
  }
  public void setUploadFileName(String uploadFileName) {
    this.uploadFileName = uploadFileName;
  }
  public File getUpload() {
    return this.upload;
  }
  public String getUploadContentType() {
    return this.uploadContentType;
  }
  public String getUploadFileName() {
    return this.uploadFileName;
  }
  @Override
  @Action("doUpload")
  public String execute()
  {
    System.out.println("Upload ok : " + (this.upload != null));
    return SUCCESS;
  }
}

我的问题是它只有在我没有在动作类上设置任何拦截器时才有效。一旦我设置了一个拦截器，即使是像上面这样的 FileUploadInterceptor，属性也不会被填充。

基本上，这有效：

public class UploadAction extends ActionSupport {...

但这不起作用：

@InterceptorRefs({
  @InterceptorRef("fileUpload")
})
public class UploadAction extends ActionSupport {...

或者

@InterceptorRefs({
  @InterceptorRef("fileUpload"),
  @InterceptorRef("myOtherinterceptor")
})
public class UploadAction extends ActionSupport {...

我发现 ！解决方案是：

@InterceptorRefs({
  @InterceptorRef("fileUpload"),
  @InterceptorRef("basicStack")
})
public class UploadAction extends ActionSupport {...

Answer 1

如果设置任何拦截器，则必须设置所有拦截器。基本上，您将关闭除上传拦截器之外的所有内容，这不是您想要的。

如果您要手动配置拦截器，并且需要引用多个拦截器，请按照InterceptorRef 文档@InterceptorRefs使用“包装器”注释。