【web应用系统实践】第五章作业

谁践踏了优雅 2023-10-03 19:22 60阅读 0赞

> 仅供参考

1.  设计一个页面，用户在上面输入圆的半径，提交后显示出圆的周长和面积，要求使用例 5-1 的 JavaBean 类。

#### (两个页面 + 1个Java类) ####

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Demo5-1-1</title>
    </head>
    <body>
    <form action="count.jsp" name="count">
        半径：<input type="text" name="radius"> <br>
        <input type="submit" value="submit">
    </form>
    </body>
    </html>

count.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Demo5-1-2</title>
    </head>
    <body>
    <h1>圆</h1>
    <hr>
    <jsp:useBean id="pojo" class="bean.Circle" scope="request"/>
    <jsp:setProperty name="pojo" property="*"/>
    <h3>周长：</h3>
    <jsp:getProperty name="pojo" property="perimeter"/><br>
    <h3>面积：</h3>
    <jsp:getProperty name="pojo" property="area"/>
    </body>
    </html>

Circle.java

package bean;
    
    public class Circle {
        
        double radius;
        double perimeter;
        double area;
    
        public void setRadius(double radius) {
        
            this.radius = radius;
        }
    
        public double getRadius() {
        
            return radius;
        }
    
        public void setPerimeter(double perimeter) {
        
            this.perimeter = perimeter;
        }
    
        public double getPerimeter() {
        
            return 2 * Math.PI * radius;
        }
    
        public void setArea(double area) {
        
            this.area = area;
        }
    
        public double getArea() {
        
            return Math.PI * radius * radius;
        }
    }

1.  设计一个注册页面register.jsp，用户填写的信息包括：姓名、性别、出生年月、民族、个人介绍等，用户单击注册按钮后将注册信息通过 output.jsp 显示出来。要求编写一个 JavaBean，封装用户填写的注册信息。

#### (两个页面 + 1个Java类) ####

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head><title>Demo5-2-1</title>
    </head>
    <body>
    <form name="sheet" action="output.jsp">
        <p>姓名：<input type="text" name="username" size="20"></p>
        <p>性别：<input type="radio" name="sex" value="男" checked>男
            <input type="radio" name="sex" value="女" >女</p>
        <label>出生年月：</label><input type="date" name="birth" >
        <p>民族：<select size = "1" name ="people">
            <option value="汉族" selected> 汉族 </option >
            <option value="黎族"> 黎族 </option>
            <option value="保安族"> 保安族 </option>
        </select></p>
        <p>个人简介：</p>
        <p><textarea name="des" rows="5" cols="60" ></textarea></p>
        <p><input type="submit" value="提交">
            <input type="reset" value="重置">
        </p>
    </form>
    </body>
    </html>

output.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Demo5-2-2</title>
    </head>
    <body>
    <jsp:useBean id="user" class="bean.User" scope="request"/>
    <jsp:setProperty name="user" property="*"/>
    姓名：<jsp:getProperty name="user" property="username"/><br>
    性别：<jsp:getProperty name="user" property="sex"/><br>
    出生年月：<jsp:getProperty name="user" property="birth"/><br>
    民族：<jsp:getProperty name="user" property="people"/><br>
    个人介绍：<jsp:getProperty name="user" property="des"/><br>
    </body>
    </html>

User.java

package bean;
    
    public class Users {
        
        String username;
        String  sex;
        String  birth;
        String people;
        String des;
    
        public Users() {
        
        }
    
        public Users(String username, String sex, String birth, String people, String des) {
        
            this.username = username;
            this.sex = sex;
            this.birth = birth;
            this.people = people;
            this.des = des;
        }
    
        public String getUsername() {
        
            return username;
        }
    
        public void setUsername(String username) {
        
            this.username = username;
        }
    
        public String getSex() {
        
            return sex;
        }
    
        public void setSex(String sex) {
        
            this.sex = sex;
        }
    
        public String getBirth() {
        
            return birth;
        }
    
        public void setBirth(String birth) {
        
            this.birth = birth;
        }
    
        public String getPeople() {
        
            return people;
        }
    
        public void setPeople(String people) {
        
            this.people = people;
        }
    
        public String getDes() {
        
            return des;
        }
    
        public void setDes(String des) {
        
            this.des = des;
        }
    }