小编Ser*_*mez的帖子

我设计了以下方法并在托管bean中使用它:

public static void redirectToPrevious() {
    FacesContext context = FacesContext.getCurrentInstance();
    XSPContext xContext=XSPContext.getXSPContext(context);
    xContext.redirectToPrevious();
}

它按预期工作.它重定向到上一页(如果没有,则重定向到主页).

但是,每次它工作时,它会抛出RedirectSignal错误:

com.ibm.xsp.FacesExceptionEx: javax.faces.el.EvaluationException: com.ibm.xsp.acl.RedirectSignal
at com.ibm.xsp.util.DataPublisher.publishControlData(DataPublisher.java:204)
at com.ibm.xsp.component.UIDataPanelBase.publishControlData(UIDataPanelBase.java:310)
at com.ibm.xsp.component.UIDataPanelBase.initBeforeContents(UIDataPanelBase.java:451)
at com.ibm.xsp.component.UIIncludeComposite.initBeforePageContents(UIIncludeComposite.java:668)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:339)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.addComponent(AbstractCompiledPage.java:389)
at com.ibm.xsp.component.UIIncludeComposite.buildContents(UIIncludeComposite.java:453)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildFacet(CompiledComponentBuilder.java:205)
at com.ibm.xsp.component.UICallback.buildContents(UICallback.java:180)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildChildren(CompiledComponentBuilder.java:123)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildAll(CompiledComponentBuilder.java:84)
at com.ibm.xsp.extlib.component.layout.UIVarPublisherBase.buildContents(UIVarPublisherBase.java:97)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildChildren(CompiledComponentBuilder.java:123)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildAll(CompiledComponentBuilder.java:84)
at com.ibm.xsp.component.UIIncludeComposite.buildPageContents(UIIncludeComposite.java:692)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:340)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.addComponent(AbstractCompiledPage.java:389)
at com.ibm.xsp.component.UIIncludeComposite.buildContents(UIIncludeComposite.java:453)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildChildren(CompiledComponentBuilder.java:123)
at com.ibm.xsp.page.compiled.CompiledComponentBuilder.buildAll(CompiledComponentBuilder.java:84)
at com.ibm.xsp.component.UIViewRootEx.buildContents(UIViewRootEx.java:1649)
at com.ibm.xsp.component.UIViewRootEx2.buildContents(UIViewRootEx2.java:247)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.initComponent(AbstractCompiledPage.java:334)
at com.ibm.xsp.page.compiled.AbstractCompiledPage.createTree(AbstractCompiledPage.java:256)
at …