java 弹出对话框输入多行_JSF 在弹出对话框里修改多行记录

在javaserver faces里做弹出对话框并不是一件容易的事情,尤其是在弹出对话框里做修改记录的操作,感觉还是蛮麻烦的. 这里主要用到了两个javascript小技巧,window.open("","popup","height=480,width=320,toolbar=no,menubar=no,scrollbars=no");打开一个空白网页的窗口,然后动态设置修改按钮提交时的target属性.另一个小技巧是 setInterval('opener.window.location.href=opener.window.location.href;window.close();',20);在编辑页面提交表单时做这个

显示数据的文件show.jsp

pressed="fail";

function setPress(newValue){

pressed=newValue;

}

function confirmSubmit(){

if(pressed="editor"){

popup = window.open("","popup","height=480,width=320,toolbar=no,menubar=no,scrollbars=no");

popup.openerFormId=document.forms["fors"].id;

popup.focus();

document.forms["fors"].target="popup";

}

}

function SetCheckedStatus()

{

var oTable=document.all['fors:data'];

var oChkAll=document.all['fors:selectall']

if(oTable != null && oChkAll != null)

{

for(j=1;j

{

oTable.rows(j).cells(0).children.item(0).checked=oChkAll.checked;

}

}

}

show book

编辑页面也就弹出对话窗页面editor.jsp

editor

function confirmSubmit(){

setInterval('opener.window.location.href=opener.window.location.href;window.close();',20);

}

backing bean CDBean.java

package test;

import java.util.*;

import javax.faces.model.ListDataModel;

import javax.faces.event.ActionEvent;

public class CDBean {

private List CDList = new ArrayList();

private ListDataModel model;

private ListDataModel editorModel;

public CDBean() {

CDList.add(new CD("计算机应用", "长江", 25.00F, ""));

CDList.add(new CD("java模式", "长江", 80.00F, ""));

CDList.add(new CD("j2EE1.4标准教材", "长江", 100.00F, ""));

}

public ListDataModel getModel() {

if (model == null) {

model = new ListDataModel(CDList);

}

return model;

}

public ListDataModel getEditorModel() {

return editorModel;

}

public void editorTriggered(ActionEvent actionEvent) {

List list = (List) model.getWrappedData();

List editorList = new ArrayList();

for (Iterator it = list.iterator(); it.hasNext(); ) {

CD cd = (CD) it.next();

if (cd.getEditor()) {

editorList.add(cd);

}

}

editorModel = new ListDataModel(editorList);

}

public void saveTriggered(ActionEvent actionEvent) {

List list = (List) editorModel.getWrappedData();

for (Iterator it = list.iterator(); it.hasNext(); ) {

CD cd = (CD) it.next();

cd.setEditor(false);

}

}

}

辅助类CD.java

package test;

public class CD implements java.io.Serializable {

private Long id;

private String artist;

private String category;

private String subCategory;

private String title;

private float price;

private boolean editor;

public CD() {

}

public CD(String aTitle, String aArtist, float aPrice, String aCategory) {

this.title = aTitle;

this.artist = aArtist;

this.price = aPrice;

this.category = aCategory;

}

public void setArtist(String aArtist) {

this.artist = aArtist;

}

public String getArtist() {

return artist;

}

public void setCategory(String aCategory) {

this.category = aCategory;

}

public String getCategory() {

return category;

}

public void setId(Long aId) {

this.id = aId;

}

public Long getId() {

return id;

}

public void setPrice(float aPrice) {

this.price = aPrice;

}

public float getPrice() {

return price;

}

public void setSubCategory(String aSubCategory) {

this.subCategory = aSubCategory;

}

public String getSubCategory() {

return subCategory;

}

public void setTitle(String aTitle) {

this.title = aTitle;

}

public String getTitle() {

return title;

}

public void setEditor(boolean editor){

this.editor=editor;

}

public boolean getEditor(){

return this.editor;

}

}

配置文件faces-config.xml

cd

test.CDBean

session

/show.jsp

editor

/editor.jsp

/editor.jsp

show

/show.jsp

最后的总结:在弹出窗口里是没法用jsf的验证机制的,原因是setInterval('opener.window.location.href=opener.window.location.href;window.close();',20);有一个javascript的opener对象的引用,当用jsf验证时如果有非法输入,弹出窗口页面就会刷新,这就会丢失对opener的引用,而且还存在另一个问题就是如果验证正确就应该关闭对话框,失败就不应该关闭对话框.这个问题也不好解决. 那么是不是就没办法解决验证的问题呢?不是的.可以在弹出页面里用frame引用两个页面,一个保持对opener的引用,另一个就是编辑作用了,具体作法就是在backing bean 里添加一个action动态导航方法里调用FacesContext.getCurrentInstance().getResponseWriter().write(); 在write 方法里打印用于控制关闭对话框的javascript代码,因为action方法能执行就表示验证一定通过了.如果验证不通过的话就会返回自身页面抛出异常.在write 方法里,最后在write 方法的最后一定不能忘了 FacesContext.getCurrentInstance().responseComplete()以跳过转向的执行,也就是跳过jsf生命的最后一个阶段.还有另一个更好的解决方案,用Ajax实现验证,具体实现就不再赘述了,因为它不是jsf的一部分:) 欢迎加入QQ群:30406099

posted on 2006-07-31 10:44 傻 瓜 阅读(5031) 评论(2)  编辑  收藏 所属分类: Java Server Faces