ed void updateAjaxAttributes(AjaxRequestAttributes 属性){ super.updateAjaxAttributes(attributes); attributes.getAjaxCallListeners().add(新建) DisableComponentListener(citysTable)); } }); //新城市连接线 AjaxLink newCityLink=newCityLink(“newCity”,repoCitys); //城市表 citysTable=新的citysTable面板(“citysTable”,repacity); setOutputMarkupId(true); //添加组件 添加(filteringForm、newCityLink、numberOfNodes、citysTable); } 私有void过滤器citysajax(AjaxRequestTarget目标,字符串状态){ 过滤结果()的方法; //重新呈现表组件 CitysTablePanel CityStableNew=新的CitysTablePanel(“CitysTable”,citys); cityTableNew.setOutputMarkupId(true); cityTableNew.setVisibilityAllowed(true); cityTableNew.setVisible(true); citytable.replacetwith(cityTableNew); target.add(cityTableNew); citytable=cityTableNew; appendJavaScript(CortexWebUtil.TABLE\u奇偶行); } 私有AjaxLink newCityLink(字符串,最终列表城市){ 最终AjaxLink newCityLink=新AjaxLink(字符串){ 私有静态最终长serialVersionUID=-5420108740617806989L; @凌驾 public void onClick(最终AjaxRequestTarget目标){ numberOfNodes.add(新属性修改器(“样式”), “显示:块”); target.add(numberOfNodes); } }; //新城市形象 Image newCityImage=新图像(“newCityIcon”,新 ContextRelativeResource(“/img/new_City_icon.png”); 添加(newCityLink); newCityLink.add(newCityImage); 返回newCityLink; } }
所以MyPage可以工作,但当我在一个新选项卡中打开MyOtherPage链接并触发MyPage中的ajax组件(例如AjaxButton)时,我会得到页面过期错误 为什么会这样? 我需要使用无状态页面吗?()ed void updateAjaxAttributes(AjaxRequestAttributes 属性){ super.updateAjaxAttributes(attributes); attributes.getAjaxCallListeners().add(新建) DisableComponentListener(citysTable)); } }); //新城市连接线 AjaxLink newCityLink=newCityLink(“newCity”,repoCitys); //城市表 citysTable=新的citysTable面板(“citysTable”,repacity); setOutputMarkupId(true); //添加组件 添加(filteringForm、newCityLink、numberOfNodes、citysTable); } 私有void过滤器citysajax(AjaxRequestTarget目标,字符串状态){ 过滤结果()的方法; //重新呈现表组件 CitysTablePanel CityStableNew=新的CitysTablePanel(“CitysTable”,citys); cityTableNew.setOutputMarkupId(true); cityTableNew.setVisibilityAllowed(true); cityTableNew.setVisible(true); citytable.replacetwith(cityTableNew); target.add(cityTableNew); citytable=cityTableNew; appendJavaScript(CortexWebUtil.TABLE\u奇偶行); } 私有AjaxLink newCityLink(字符串,最终列表城市){ 最终AjaxLink newCityLink=新AjaxLink(字符串){ 私有静态最终长serialVersionUID=-5420108740617806989L; @凌驾 public void onClick(最终AjaxRequestTarget目标){ numberOfNodes.add(新属性修改器(“样式”), “显示:块”); target.add(numberOfNodes); } }; //新城市形象 Image newCityImage=新图像(“newCityIcon”,新 ContextRelativeResource(“/img/new_City_icon.png”); 添加(newCityLink); newCityLink.add(newCityImage); 返回newCityLink; } },ajax,wicket,webpage,stateless,Ajax,Wicket,Webpage,Stateless,所以MyPage可以工作,但当我在一个新选项卡中打开MyOtherPage链接并触发MyPage中的ajax组件(例如AjaxButton)时,我会得到页面过期错误 为什么会这样? 我需要使用无状态页面吗?() 为什么在wicket中打开新选项卡中的链接并使用ajax组件会如此困难?我肯定错过了一些东西。以下是一些可能的原因: MyPage无法序列化 Wicket将有状态页面存储在页面存储中(默认情况下,存储在磁盘中)。稍后,当您单击有状态链接时,Wicket会尝试加载页面。首先,它查看htt
为什么在wicket中打开新选项卡中的链接并使用ajax组件会如此困难?我肯定错过了一些东西。以下是一些可能的原因:
- MyPage无法序列化 Wicket将有状态页面存储在页面存储中(默认情况下,存储在磁盘中)。稍后,当您单击有状态链接时,Wicket会尝试加载页面。首先,它查看http会话,其中页面保持其活动形式(即未序列化)。如果没有找到,那么Wicket会在磁盘中查找。 Wicket只保留Http会话中最后一个用户请求中使用的页面(以保持较小的内存占用)。通过单击MyOtherPage链接,您将MyOtherPage的一个实例放在Http会话中,而旧实例(MyPage)仅在磁盘中但:如果MyPage未能序列化为字节[],则无法将其存储在磁盘中,因此以后的请求将因PageExpiredException而失败 Todo:检查日志中的NotSerializableException,并给出原因的调试消息
- 我的网页太大了 默认情况下,Wicket在磁盘中的每个用户会话最多写入10M。如果MyPage是2M,MyOtherPage是9M(两种尺寸都很大,但我不知道你的应用程序中会发生什么…),那么保存MyOtherPage将从磁盘中删除MyPage。以后加载MyPage的尝试将失败,出现PageExpiredException Todo:查看您对Wicket型号的使用情况
public abstract class BasePage extends GenericWebPage<Void> {
private static final long serialVersionUID = 1L;
String username;
public WicketApplication getApp() {
return WicketApplication.class.cast(getApplication());
}
public BasePage(final PageParameters parameters) {
super(parameters);
// Read session data
cachedUsername = (String)
BasicAuthenticationSession.get().getAttribute("username");
// create navbar
add(newNavbar("navbar"));
}
/**
* @return application properties
*/
public Properties getProperties() {
return WicketApplication.get().getProperties();
}
/**
* creates a new {@link Navbar} instance
*
* @param markupId
* The components markup id.
* @return a new {@link Navbar} instance
*/
protected Navbar newNavbar(String markupId) {
Navbar navbar = new Navbar(markupId) {
private static final long serialVersionUID = 1L;
@Override
protected TransparentWebMarkupContainer newCollapseContainer(String
componentId) {
TransparentWebMarkupContainer container =
super.newCollapseContainer(componentId);
container.add(new CssClassNameAppender("bs-navbar-collapse"));
return container;
}
};
navbar.setPosition(Navbar.Position.TOP);
// navbar.setInverted(true);
NavbarButton<Void> myTab = new NavbarButton<Void>(MyPage.class, new
PageParameters().add("name", "")
.add("status", "All").add("date", ""), Model.of("My page"));
NavbarButton<Void> myOtherTab = new NavbarButton<Void>
(MyOtherPage.class, new PageParameters().add("status", "initial")
.add("date", ""), Model.of("My other page"));
navbar.addComponents(NavbarComponents.transform(
Navbar.ComponentPosition.LEFT,
myTab, myOtherTab));
return navbar;
}
}
public class MyPage extends BasePage {
private static final long serialVersionUID = 5772520351966806522L;
@SuppressWarnings("unused")
private static final Logger LOG = LoggerFactory.getLogger(MyPage.class);
private static final Integer DAYS = 270;
private DashboardFilteringPageForm filteringForm;
private CityInitialForm ncForm;
private String CityName;
private String startDate;
private CitysTablePanel citysTable;
private WebMarkupContainer numberOfNodes;
public MyPage(PageParameters parameters) throws ParseException {
super(parameters);
// get Citys list from repo
final List<City> repoCitys = (List<City>) methodToGetCities();
// select number of nodes
numberOfNodes = new WebMarkupContainer("numberOfNodes") {
private static final long serialVersionUID = 5772520351966806522L;
};
numberOfNodes.setOutputMarkupId(true);
ncForm = new CityInitialForm("ncForm");
// validation
add(new FeedbackPanel("feedbackPanel")).setOutputMarkupId(true);
ncForm.getNumberField().setRequired(true);
ncForm.add(new AjaxButton("ncButton") {
private static final long serialVersionUID = -6846211690328190809L;
@Override
protected void onInitialize() {
super.onInitialize();
add(newAjaxFormSubmitBehavior("change"));
}
@Override
protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
// redirect to other page
}
@Override
protected void updateAjaxAttributes(AjaxRequestAttributes
attributes) {
super.updateAjaxAttributes(attributes);
attributes.getAjaxCallListeners().add(new
DisableComponentListener(citysTable));
}
});
numberOfNodes.add(ncForm);
// filters
CityName = parameters.get("name").toString() == null ? "" :
parameters.get("name").toString();
startDate = parameters.get("date").toString();
filteringForm = new DashboardFilteringPageForm("filteringForm") {
private static final long serialVersionUID = -1702151172272765464L;
};
// initialize form inputs
filteringForm.setCityName(CityName);
try {
filteringForm.setStartDate(new SimpleDateFormat("EE MMM dd HH:mm:ss
z yyyy", Locale.ENGLISH)
.parse(getStartDate().equals("") ?
CortexWebUtil.subtractDays(new Date(), DAYS).toString() : getStartDate()));
} catch (Exception e) {
setResponsePage(SignInPage.class, new PageParameters());
}
filteringForm.add(new AjaxButton("button") {
private static final long serialVersionUID = -6846211690328190809L;
@Override
protected void onInitialize() {
super.onInitialize();
add(newAjaxFormSubmitBehavior("change"));
}
@Override
protected void onSubmit(AjaxRequestTarget target, Form<?> paForm) {
// retrieve Citys
filterCitysAjax(target, "All");
}
@Override
protected void updateAjaxAttributes(AjaxRequestAttributes
attributes) {
super.updateAjaxAttributes(attributes);
attributes.getAjaxCallListeners().add(new
DisableComponentListener(citysTable));
}
});
filteringForm.getCityNameTextField().add(new OnChangeAjaxBehavior() {
private static final long serialVersionUID = 1468056167693038096L;
@Override
protected void onUpdate(AjaxRequestTarget target) {
try {
filterCitysAjax(target, "All");
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
@Override
protected void updateAjaxAttributes(AjaxRequestAttributes
attributes) {
super.updateAjaxAttributes(attributes);
attributes.getAjaxCallListeners().add(new
DisableComponentListener(citysTable));
}
});
// new City link
AjaxLink<Void> newCityLink = newCityLink("newCity", repoCitys);
// Citys table
citysTable = new CitysTablePanel("CitysTable", repoCitys);
citysTable.setOutputMarkupId(true);
// add components
add(filteringForm, newCityLink, numberOfNodes, citysTable);
}
private void filterCitysAjax(AjaxRequestTarget target, String status) {
methodToFilterResults();
// re-render table component
CitysTablePanel cityTableNew = new CitysTablePanel("CitysTable", citys);
cityTableNew.setOutputMarkupId(true);
cityTableNew.setVisibilityAllowed(true);
cityTableNew.setVisible(true);
citysTable.replaceWith(cityTableNew);
target.add(cityTableNew);
citysTable = cityTableNew;
target.appendJavaScript(CortexWebUtil.TABLE_ODD_EVEN_ROWS);
}
private AjaxLink<Void> newCityLink(String string, final List<City> Citys) {
final AjaxLink<Void> newCityLink = new AjaxLink<Void>(string) {
private static final long serialVersionUID = -5420108740617806989L;
@Override
public void onClick(final AjaxRequestTarget target) {
numberOfNodes.add(new AttributeModifier("style",
"display:block"));
target.add(numberOfNodes);
}
};
// new City image
Image newCityImage = new Image("newCityIcon", new
ContextRelativeResource("/img/new_City_icon.png"));
add(newCityLink);
newCityLink.add(newCityImage);
return newCityLink;
}
}