打开指定大小的新窗口

使用JavaScript打开一个弹出窗口，可以使用window对象的open()方法或showModalDialog()方法完成。

JavaBean类

public class ShowWindow {private String url;//打开窗口的链接地址private String openWindowStr="";//用于保存打开窗口的JavaSript代码private int width;//打开窗口的宽度private int height;//打开窗口的高度private String functionName;//打开窗口的JavaScript函数名public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public String getOpenWindowStr() {StringBuffer sb = new StringBuffer(openWindowStr);sb.append("<script language='javascript'>");sb.append("\r\n\t");//添加换行缩进sb.append("function "+this.functionName+"(){");//添加函数名sb.append("\r\n\t\t");//打开一个窗口时，返回一个window类型的对象returnObj，可以根据此对象来调整窗口的位置sb.append("var returnObj = window.open('"+this.url+"','window','width="+this.width+"px,height="+this.height+"px');");sb.append("\r\n\t\t");sb.append("var x=(screen.width-"+width+")/2;");//screen对象表示屏幕，此处设置相对于屏幕的x坐标sb.append("\r\n\t\t");sb.append("var y=(screen.height-"+height+")/2;");//此处设置相对于屏幕的y坐标sb.append("\r\n\t\t");sb.append("returnObj.moveTo(x,y);");//调用moveTo()方法改变窗口位置sb.append("\r\n\t}");sb.append("\r\n");sb.append("</script>");return sb.toString();}public void setOpenWindowStr(String openWindowStr) {this.openWindowStr = openWindowStr;}public int getWidth() {return width;}public void setWidth(int width) {this.width = width;}public int getHeight() {return height;}public void setHeight(int height) {this.height = height;}public String getFunctionName() {return functionName;}public void setFunctionName(String functionName) {this.functionName = functionName;}public static void main(String [] args){ShowWindow s = new ShowWindow();s.setFunctionName("openWindow");s.setUrl("index.jsp");s.setWidth(500);s.setHeight(500);System.out.println(s.getOpenWindowStr());}}

OpenCenterWindow类

public class OpenCenterWindow {/*****************************************功能：该方法将生成一个字符串，该字符串用于输出自定义的JavaScript函数(该函数用于打开指定大小的新窗口，并居中显示)****************************************/public String open(String url,String w,String h,String no){String str="<script language='javascript'>function openwin"+no+"(){";str=str+"if ("+w+"=='0'){var winhdc=window.open('"+url+"');";str=str+"var width=0;var height=0;}else{";str=str+"var winhdc=window.open('"+url+"','','width="+w+",height="+h+"');";str=str+"var width=(screen.width-"+w+")/2;";str=str+"var height=(screen.height-"+h+")/2;}";str=str+"winhdc.moveTo(width,height);";str=str+"}</script>";return str;}}

index.jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><base href="<%=basePath%>"><title>My JSP 'index.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"></head><body><jsp:useBean id="myWindow" class=".zj.test.ShowWindow"></jsp:useBean><jsp:setProperty property="functionName" name="myWindow" value="openWindow1"/><jsp:setProperty property="url" name="myWindow" value="window.jsp"/><jsp:setProperty property="width" name="myWindow" value="200"/><jsp:setProperty property="height" name="myWindow" value="100"/><jsp:getProperty property="openWindowStr" name="myWindow" /><form action="window.jsp" method="post"><input type="button" value="打开窗口" onclick="openWindow1()"/></form></body></html>

window.jsp页面