BeanUtils工具类

1 使用BeanUtils进行自动映射封装

1 html代码

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head></head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>会员注册</title>
<link rel="stylesheet" href="css/bootstrap.min.css" type="text/css" />
<script src="js/jquery-1.11.3.min.js" type="text/javascript"></script>
<script src="js/bootstrap.min.js" type="text/javascript"></script>
<!-- 引入自定义css文件 style.css -->
<link rel="stylesheet" href="css/style.css" type="text/css" />

<style>
body {
    margin-top: 20px;
    margin: 0 auto;
}

.carousel-inner .item img {
    width: 100%;
    height: 300px;
}

font {
    color: #3164af;
    font-size: 18px;
    font-weight: normal;
    padding: 0 10px;
}
</style>
</head>
<body>

    <!-- 引入header.jsp -->
    <jsp:include page="/header.jsp"></jsp:include>

    <div class="container"
        style="width: 100%; background: url('image/regist_bg.jpg');">
        <div class="row">
            <div class="col-md-2"></div>
            <div class="col-md-8"
                style="background: #fff; padding: 40px 80px; margin: 30px; border: 7px solid #ccc;">
                <font>会员注册</font>USER REGISTER
                <form class="form-horizontal" style="margin-top: 5px;" action="/WEBTest13/register" method="post">
                    <div class="form-group">
                        <label for="username" class="col-sm-2 control-label">用户名</label>
                        <div class="col-sm-6">
                            <input type="text" class="form-control" id="username" name="username"
                                placeholder="请输入用户名">
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="inputPassword3" class="col-sm-2 control-label">密码</label>
                        <div class="col-sm-6">
                            <input type="password" class="form-control" id="inputPassword3" name="password"
                                placeholder="请输入密码">
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="confirmpwd" class="col-sm-2 control-label">确认密码</label>
                        <div class="col-sm-6">
                            <input type="password" class="form-control" id="confirmpwd"
                                placeholder="请输入确认密码">
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="inputEmail3" class="col-sm-2 control-label">Email</label>
                        <div class="col-sm-6">
                            <input type="email" class="form-control" id="inputEmail3" name="email"
                                placeholder="Email">
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="usercaption" class="col-sm-2 control-label">姓名</label>
                        <div class="col-sm-6">
                            <input type="text" class="form-control" id="usercaption" name="name"
                                placeholder="请输入姓名">
                        </div>
                    </div>
                    <div class="form-group opt">
                        <label for="inlineRadio1" class="col-sm-2 control-label">性别</label>
                        <div class="col-sm-6">
                            <label class="radio-inline"> <input type="radio"
                                name="sex" id="inlineRadio1" value="option1"></label> <label class="radio-inline"> <input type="radio"
                                name="sex" id="inlineRadio2" value="option2"></label>
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="date" class="col-sm-2 control-label">出生日期</label>
                        <div class="col-sm-6">
                            <input type="date" class="form-control" name="birthday">
                        </div>
                    </div>

                    <div class="form-group">
                        <label for="date" class="col-sm-2 control-label">验证码</label>
                        <div class="col-sm-3">
                            <input type="text" class="form-control">

                        </div>
                        <div class="col-sm-2">
                            <img src="./image/captcha.jhtml" />
                        </div>

                    </div>

                    <div class="form-group">
                        <div class="col-sm-offset-2 col-sm-10">
                            <input type="submit" width="100" value="注册" name="submit"
                                style="background: url('./images/register.gif') no-repeat scroll 0 0 rgba(0, 0, 0, 0); height: 35px; width: 100px; color: white;">
                        </div>
                    </div>
                </form>
            </div>

            <div class="col-md-2"></div>

        </div>
    </div>

    <!-- 引入footer.jsp -->
    <jsp:include page="/footer.jsp"></jsp:include>

</body>
</html>

2 User类代码

package p5.request;

public class User {

    private String uid;
    private String username;
    private String password;
    private String name;
    private String email;
    private String sex;
    private String birthday;
    public String getUid() {
        return uid;
    }
    public void setUid(String uid) {
        this.uid = uid;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public String getBirthday() {
        return birthday;
    }
    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
    @Override
    public String toString() {
        return "User [uid=" + uid + ", username=" + username + ", password=" + password + ", name=" + name + ", email="
                + email + ", sex=" + sex + ", birthday=" + birthday + "]";
    }
    
    
}

3 servlet测试代码

package p5.request;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.beanutils.BeanUtils;

public class RegisterServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        // 设置request的编码,只适合post方式
        request.setCharacterEncoding("UTF-8");
        
        //使用BeanUtils进行自动映射封装
        //BeanUtils工作原理:将map中的数据 根据key与实体的属性的对应关系封装
        //只要key的名字与实体的属性 的名字一样 就自动封装到实体中
        Map<String, String[]> parameterMap = request.getParameterMap();
        User user = new User();
        try {
            BeanUtils.populate(user, parameterMap);
        } catch (IllegalAccessException e) {
            
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            
            e.printStackTrace();
        }
        System.out.println(user.toString());
        //现在这个位置 user对象已经封装好了
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

}

运行结果如下:

 

posted @ 2018-01-22 12:40  Jepson6669  阅读(306)  评论(0编辑  收藏  举报