jsp实验10 JavaBean

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>

<title>Insert title here</title>

</head>

<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:

<jsp:getProperty name="fraction" property="numerator" />/

<jsp:getProperty name="fraction" property="denominator" />

</body>

</html>

inputNumber.jsp