jsp页面调用applet实现人民币的大小写转换

作者:网络 来源:佚名 更新时间:2008-06-11 17:19:27 点击:

实现方法一



applet实现页面是rmb.jsp,此页面是通过applet来实现人民币小写转换成大写的。此页面有三个变量需要在载入classes的时候进行初始化:

<applet type="applet" id="myapplet" codebase = "." name="testapplet"

align="middle" code="lqh.rmb.applicate.rmb.class"

width="560" height="25">

<param name="rgb_back" value="241|247|251">

<param name="rgb_fore" value="255|0|0"/>

<param name="wigth" value="560"/>

</applet>

变量rgb_back是初始化背景色的,修改次变量可以使applet的背景色跟自己页面的风格一样;变量rgb_fore是初始化字体的颜色; wigth要和applet的宽度一样,这个变量是保证显示的转换信息在中间显示。

此种方法不能传递值给页面trans.jsp,只能显示并且不能copy。



页面代码如下:

<html>

<head>人民币小写转换成大写</head>

<%@ page contenttype="text/html;charset=gb2312" %>

<script language=javascript>

function trans(){

//取变量的值

var aaa=document.rmb. rmb_test.value;

//给applet赋变量的值

document.myapplet.setrmb(aaa);

document.myapplet.repaint();

return true;

}

</script>

<body>

<form name="rmb">

输入金额:<input type=”text” name=”rmb_test” onkeyup=”trans()”><br><hr>

<%@ include file="../rmb.jsp" %>

</form>

</body>

</html>



实现方法二



applet实现页面是rmb.jsp,此页面是通过applet来实现人民币小写转换成大写的。此页面不需要变量进行初始化,在页面上不显示applet画的图像;而可以把转换的值传递给页面变量:

<applet type="applet" id="myapplet" codebase = "." name="testapplet"

align="middle" code="lqh.rmb.applicate.rmb.class"

width="0" height="0">

</applet>



页面trans.jsp代码如下:

<html>

<head>人民币小写转换成大写</head>

<%@ page contenttype="text/html;charset=gb2312" %>

<%@ include file="../rmb.jsp" %>

<script language=javascript>

function trans(){

var aaa=document.rmb. rmb_test.value;

//得到转换的值

var rmb = document.myapplet.getrmb(aaa);

document.rmb. rmb_result.value = rmb;

return true;

}

</script>

<body>

<form name="rmb">

输入金额:<input type=”text” name=”rmb_test” onkeyup=”trans()”><br>

转换结果:<input type=”text” name=”rmb_result” ><br>

</form>

</body>

</html>

附录

1.applet代码:



package lqh.rmb.applicate;



import java.awt.*;

import java.awt.event.*;

import java.applet.*;

import lqh.rmb.*;



public class rmb extends applet {

private boolean isstandalone = false;

private rmbconversion rmb=new rmbconversion();

private string var0 = "";

private string re_rmb="";

private string wigth ="0";

private string back_color;

private string fore_color;



public string getparameter(string key, string def) {

return isstandalone ? system.getproperty(key, def) :

(getparameter(key) != null ? getparameter(key) : def);

}

public void paint(graphics g) {

if(wigth.equals("0")){

wigth = "560";

}

int i= integer.parseint(wigth);



if(checknum(var0)){

if(var0.endswith(".")){

var0 = var0.substring(0,var0.length()-1);

}

re_rmb= rmb.rmb(var0);

}else{

re_rmb="输入错误:"+var0;

}

int middel =(i - re_rmb.length()*12)/2;

this.setbackground(new color(getcolor(back_color)[0], getcolor(back_color)[1], getcolor(back_color)[2]));

this.setforeground(new color(getcolor(fore_color)[0], getcolor(fore_color)[1], getcolor(fore_color)[2]));

g.drawstring(re_rmb,middel,20);

}

public void init() {

try {

back_color = this.getparameter("rgb_back", "241|247|251");

}catch(exception e) {e.printstacktrace();}

try {

fore_color = this.getparameter("rgb_fore", "255|0|0");

}catch(exception e) {e.printstacktrace();}

try {

wigth = this.getparameter("wigth", "0");

}catch(exception e) {e.printstacktrace();}

try {

jbinit();

}catch(exception e) { e.printstacktrace(); }

}

private void jbinit() throws exception {

this.setbackground(new color(getcolor(back_color)[0], getcolor(back_color)[1], getcolor(back_color)[2]));

}

public void setrmb(string rmb_temp){

var0 = rmb_temp;

}

public string getrmb(string rmb_temp){

if(checknum(rmb_temp)){

if(rmb_temp.endswith(".")){

rmb_temp = rmb_temp.substring(0,rmb_temp.length()-1);

}

re_rmb= rmb.rmb(rmb_temp);

}else{

re_rmb="输入错误:"+rmb_temp;

}

return re_rmb;

}

public boolean checknum(string str){

string numchar="0123456789.";

boolean breakboolean = false;

for(int i=0;i<str.length();i++){

if(numchar.indexof(str.substring(i,i+1))<0){

breakboolean =true;

}

if(breakboolean) break;

}

if(breakboolean){

return false;

}else{

if(str.startswith(".")){

return false;

}else{

return true;

}

}

}

public string[][] getparameterinfo() {

string[][] pinfo =

{

{"rgb_back", "string", ""},

{"rgb_fore", "string", ""},

{"wigth", "string", ""},

};

return pinfo;

}

private int[] getcolor(string rgb){

int[] rgb_return = new int[3];

int index =0,nextindex=0,len=0;

while((index =rgb.indexof("|",nextindex))>-1){

rgb_return[len]=getint(rgb.substring(nextindex,index));

nextindex=index+1;

len++;

}

rgb_return[len]=getint(rgb.substring(nextindex));

return rgb_return;

}

private int getint(string str){

try{

return integer.parseint(str);

}catch(exception e){

return 0;

}

}

}





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