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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<!-- 导入打开窗口的JavaBean类 -->
<jsp:useBean id="myWindow" class="com.cn.zj.test.ShowWindow"></jsp:useBean>
<!-- 设置打开窗口的JavaScript函数名 -->
<jsp:setProperty property="functionName" name="myWindow" value="openWindow1"/>
<!-- 设置打开窗口的url地址 -->
<jsp:setProperty property="url" name="myWindow" value="window.jsp"/>
<!-- 设置打开窗口的宽度 -->
<jsp:setProperty property="width" name="myWindow" value="200"/>
<!-- 设置打开窗口的高度 -->
<jsp:setProperty property="height" name="myWindow" value="100"/>
<!-- 获得打开窗口的JavaScript函数字符串 -->
<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
<%@ 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>打开窗口</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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
body{
font-size: 15px;
color:green;
font-family: 隶书;
background-color: pink;
}
</style>
</head>
<body>
你好！我是被打开的新窗口！宽度200px，高度100px，居中显示。
</body>
</html>