二、实验项目内容（实验题目）
编写代码，掌握javabean的用法。【参考课本 上机实验 5.5.1 】
三、源代码以及执行结果截图：
源代码：
Fraction.java
package sea.water;
public class Fraction {
public double number;
public long numerator;
public long denominator;
public double getNumber() {
String numberString = String.valueOf(number);
String xiaoshuPart = numberString.substring(numberString.indexOf(".")+1);
return Double.parseDouble("0."+xiaoshuPart);
}
public long getNumerator() {
return numerator;
}
public long getDenominator() {
return denominator;
}
public void setNumber(double number) {
this .number = number;
String numerString = String.valueOf(number);
String xiaoshuPart = numerString.substring(numerString.indexOf(".")+1);
int m = xiaoshuPart.length();
numerator = Long.parseLong(xiaoshuPart);
denominator = (long )Math.pow(10, m);
long greatCommonDivisor = f(numerator,denominator);
numerator = numerator/greatCommonDivisor;
denominator = denominator/greatCommonDivisor;
}
private long f(long a, long b) {
if (a==0) return 1;
if (a<b) {
long c = a;
a = b;
b = c;
}
long r = a % b;
while (r!=0) {
a = b;
b = r;
r = a%b;
}
return b;
}
}
getFraction.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" >
<title>Insert title here</title>
</head>
<body bgcolor="cyan" >
<p style="font-family: 宋体 ;font-size: 36 ;color: red ;">
<jsp:useBean id="fraction" class="sea.water.Fraction" scope="request" />
<jsp:setProperty name="fraction" property="number" param="number" />
<jsp:getProperty name="fraction" property="number" />
表示成分数是:<br>
<jsp:getProperty name="fraction" property="numerator" />/
<jsp:getProperty name="fraction" property="denominator" />
</p>
</body>
</html>
inputNumber.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" >
<title>Insert title here</title>
</head>
<body bgcolor="cyan" >
<p style="font-family: 宋体 ;font-size: 36 ;color: red ;">
<jsp:useBean id="fraction" class="sea.water.Fraction" scope="request" />
<jsp:setProperty name="fraction" property="number" param="number" />
<jsp:getProperty name="fraction" property="number" />
表示成分数是:<br>
<jsp:getProperty name="fraction" property="numerator" />/
<jsp:getProperty name="fraction" property="denominator" />
</p>
</body>
</html>
效果图：
