我在将图像从数据库加载到 jsp 视图时遇到问题。看起来动作正在执行但在中间停止。我在 execute() 方法开始和结束时记录。在日志文件中,我可以看到启动此方法,但没有结束。
我有行动:
public class ShowImageAction extends BaseAction {
private static final long serialVersionUID = 1L;
private static final Log LOG = LogFactory.getLog(ShowImageAction.class);
private int id;
public String execute() {
LOG.info("Enter execute()");
MessageBean messageBean = (MessageBean) sessionParameters
.get(SessionParameters.BANNER_EDIT);
IFiles filesEJB = EJBLocator.getFiles();
if (messageBean != null) {
id = messageBean.getBannerId();
}
FileBean file = filesEJB.file(id);
LOG.info("Id = " + id);
if (file != null) {
byte[] bytes = null;
try {
LOG.info("File: name = " + file.getName() + ". type = "
+ file.getType());
if (file.getImage() != null) {
bytes = FileUtils.readFileToByteArray(file.getImage());
HttpServletResponse response = ServletActionContext
.getResponse();
response.setContentType(file.getType());
OutputStream out = response.getOutputStream();
out.write(bytes);
out.close();
} else {
LOG.info("execute(): Nie udało się pobrać pliku z bazy danych!");
}
} catch (IOException e) {
LOG.error(e);
}
} else {
LOG.info("execute(): Nie udało się pobrać pliku z bazy danych!");
}
LOG.info("Exit execute()");
return NONE;
}
jsp:
<div class="OneFilteringRow">
Podgląd<br />
<img src="/ebok-bm/ShowImageAction" alt="Podgląd banera" />
</div>
struts.xml
<action name="ShowImageAction"
class="pl.bm.action.content.ShowImageAction">
</action>