Oracle ADF 11g后台常用方法（2）

1.获取request

    public HttpServletRequest getHttpRequest() {        FacesContext context = FacesContext.getCurrentInstance();        HttpServletRequest request =             (HttpServletRequest)context.getExternalContext().getRequest();        return request;    }

2.后台获取树结构点击行的方法

    public void selectSendPerson(SelectionEvent selectionEvent){        Map viewScope = AdfFacesContext.getCurrentInstance().getViewScope();        RichTree tree = (RichTree)selectionEvent.getSource();        CollectionModel model = (CollectionModel)tree.getValue();        JUCtrlHierBinding treeBinding = (JUCtrlHierBinding)model.getWrappedData();        String methodExpression = "#{bindings." + treeBinding.getName() + ".treeModel.makeCurrent}";        this.handleTreeSelection(selectionEvent, methodExpression);        RowKeySet rks = selectionEvent.getAddedSet();        Iterator iterator = rks.iterator();        if (iterator.hasNext()) {            List rowKey = (List)iterator.next();            JUCtrlHierNodeBinding node = treeBinding.findNodeByKeyPath(rowKey);            JUCtrlHierTypeBinding nodeType = node.getHierTypeBinding();            Row rw = node.getRow();            Object leaf = rw.getAttribute("LeafNode");        }    }    private void handleTreeSelection(SelectionEvent selectionEvent, String el) {        FacesContext fctx = FacesContext.getCurrentInstance();        ELContext elctx = fctx.getELContext();        ExpressionFactory exprFactory = fctx.getApplication().getExpressionFactory();        MethodExpression me =            exprFactory.createMethodExpression(elctx, el, Object.class, new Class[] { SelectionEvent.class });        me.invoke(elctx, new Object[] { selectionEvent });    }

3.后台获取face-config.xml中的配置信息并跳转

    public void navToOutCome(String outCome) {        FacesContext facesContext = FacesContext.getCurrentInstance();        Application application = facesContext.getApplication();        NavigationHandler navigationHandler = application.getNavigationHandler();        ControllerContext controllerContext = ControllerContext.getInstance();        String viewId = controllerContext.getCurrentViewPort().getViewId();        if (viewId != null) {            navigationHandler.handleNavigation(facesContext, viewId, outCome);        }    }

4.ADF的scope获取方式

    ADFContext.getCurrent().getApplicationScope();     ADFContext.getCurrent().getSessionScope();     AdfFacesContext.getCurrentInstance().getPageFlowScope();    ADFContext.getCurrent().getRequestScope();     ADFContext.getCurrent().getViewScope();

5.11g弹框

    <af:popup childCreation="deferred" autoCancel="disabled" id="p2" binding="#{testBean.pop}" contentDelivery="immediate">        <af:dialog id="d2" type="ok" closeIconVisible="false">            <f:facet name="buttonBar"/>            <af:panelGroupLayout id="pgl3" layout="scroll" halign="center" inlineStyle="width:160px;height:60px">                <p>                    <h:outputText id="ot3" binding="#{TaskApproveBean.outmessage}" value="NULL"/>                </p>            </af:panelGroupLayout>        </af:dialog>    </af:popup>    private RichPopup pop;    private HtmlOutputText outmessage = new HtmlOutputText();    public void showPop(String message) {        this.outmessage.setValue(message);        this.pop.show(new RichPopup.PopupHints());    }

6.弹出提示框

    public void showInfoMessage(String Msg) {        FacesMessage m = new FacesMessage();        m.setDetail(Msg);        m.setSeverity(FacesMessage.SEVERITY_INFO);        FacesContext.getCurrentInstance().addMessage(null, m);    }

7.页面布局常用的标签

    <af:panelGroupLayout id="pgl1"/> <!--一片区域类是div 有水平和垂直 -->    <af:panelFormLayout  id="p2" />  <!--自动排列form表单元素 -->    <af:panelGridLayout id="p3" />   <!--表格布局 -->

8.点击页面按钮在当前按钮坐标弹出选值框

    <af:inputText id="USERCODE" columns="40" label="人员编码" disabled="true" contentStyle="width:500px;" inding="#{testBean.bdUserCode}"/>    <af:commandLink id="c2" >        <af:image id="i3" source="../images/search.png"/>        <af:showPopupBehavior popupId="myPopup" triggerType="action" align="endBefore" alignId="c2" />    </af:commandLink>    <af:popup id="myPopup" launcherVar="source" contentDelivery="lazyUncached"                          eventContext="launcher" binding="#{testBean.windowPopUp}"  popupFetchListener="#{testBean.winPopFechListener}">    </af:popup>    ClientListenerSet set = new ClientListenerSet();    set.addBehavior("new AdfShowPopupBehavior('myPopup',AdfRichPopup.ALIGN_AFTER_END,null,'focus')");

9.eo中添加create方法在执行#{binding.create.execute}自动执行初始化序列

    protected void create(AttributeList attributeList) {        super.create(attributeList);        SequenceImpl s = new SequenceImpl("TEST_SEQ", this.getDBTransaction());        Long next = (Long)s.getData();        try{            this.setId(next.toString());        }catch(Exception e){            e.printStackTrace();        }    }

10.oracle.jbo.RowInconsistentException: JBO-25014: 其他用户已更改具有主键 oracle.jbo.Key[2332] 的行。
异常解决方法：在EOImpl中加入以下代码

    public void lock() {       try {                super.lock();            } catch (RowInconsistentException e) {               e.printStackTrace();                refresh(REFRESH_WITH_DB_ONLY_IF_UNCHANGED | REFRESH_CONTAINEES);               System.out.println("已被处理的异常信息："+new java.util.Date().toLocaleString()+" 更新时出现锁异常！");               super.lock();            }    }