Index.jsp

身高：
体重：

Process.jsp <%@ page import = "Bean.BMI" %> <% BMI b = new BMI(); double h = Double.parseDouble(request.getParameter("height").toString()); double w = Double.parseDouble(request.getParameter("weight").toString()); double ans = b.func(w, h); out.println("BMI = "+ans); %> BMI类 package Bean; public class BMI { //BMI值計算公式: BMI =体重(公斤) /身高2(公尺2)。 public double func(double weight,double length){ return weight / length; } }