我在使用@Named
註釋時遇到了一些問題。例如,下面bean正常工作,接收和上傳文件:@命名註釋不起作用
@ManagedBean
@RequestScoped
public class Bean {
private UploadedFile uploadedFile;
public void submit() throws IOException {
String fileName = FilenameUtils.getName(uploadedFile.getName());
String contentType = uploadedFile.getContentType();
byte[] bytes = uploadedFile.getBytes();
// Now you can save bytes in DB (and also content type?)
FacesContext.getCurrentInstance().addMessage(null,
new FacesMessage(String.format("File '%s' of type '%s' successfully uploaded!", fileName, contentType)));
}
public UploadedFile getUploadedFile() {
return uploadedFile;
}
public void setUploadedFile(UploadedFile uploadedFile) {
this.uploadedFile = uploadedFile;
}
}
但是如果我取代了@ManagedBean
和@RequestedScope
與@Named
和@RequestScoped
它失敗與此異常:
javax.el.PropertyNotFoundException:目標不可到達,標識符'bean'解析爲null
我知道@Named
我在Netbeans項目中設置了不正確的版本嗎?我也在Glassfish 4服務器上進行部署。根據需要,通過CDI 1.1
感謝
我認爲其他問題應該被標記爲'重複',因爲它被問及上述問題。 – Kerry