点击查看如何获取以及配置Common BeanUtils 和 Commons-Logging jar包

BeanUtils工具包是由Apache公司所开发，主要是方便程序员对Bean类能够进行简便的操作；并且把获取的请求参数封装成对象，对象可以直接存到数据库中。

1、创建User对象

package com.User;

import java.util.Arrays;

public class User {
	
	private String username;
	private String pass;
	private String usersex;
	private String[] userhobby;
	
	@Override
	public String toString() {
		return "User [username=" + username + ", pass=" + pass + ", usersex=" + usersex + ", userhobby="
				+ Arrays.toString(userhobby) + "]";
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPass() {
		return pass;
	}
	public void setPass(String pass) {
		this.pass = pass;
	}
	public String getUsersex() {
		return usersex;
	}
	public void setUsersex(String usersex) {
		this.usersex = usersex;
	}
	public String[] getUserhobby() {
		return userhobby;
	}
	public void setUserhobby(String[] userhobby) {
		this.userhobby = userhobby;
	}

	
}

2、使用 BeanUtils获取Request的请求参数

package com.RequestHttpServlet;

import com.User.*;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.Map;
import java.util.Map.Entry;

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

import org.apache.commons.beanutils.BeanUtils;

/**
 * Servlet implementation class ThirdRequestServlet
 */
@WebServlet("/ThirdRequestServlet")
public class ThirdRequestServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ThirdRequestServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		
		Map<String, String[]> parameterMap = request.getParameterMap();
		
		User user = new User();
		
		//把获取的请求参数封装成对象，对象可以直接存到数据库中
		try {
			BeanUtils.populate(user, parameterMap);
		} catch (IllegalAccessException | InvocationTargetException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		System.out.println(user);
		
	}

}

3、HTML页面

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<form action="/JWDemo/ThirdRequestServlet" method="get">
		<input type="text" name="username" placeholder="请输入用户名">
		<br>
		<input type="radio" value="男"  name="usersex">男
		<input type="radio" value="女" name="usersex">女
		<br>
		<input type="checkbox" value="听音乐" name="userhobby">听音乐
		<input type="checkbox" value="运动" name="userhobby">运动
		<input type="checkbox" value="电子游戏" name="userhobby">电子游戏
		<br>
		<input type="submit" value="提交">
	</form>
</body>
</html>

使用 BeanUtils获取Request的请求参数

点击查看如何获取以及配置Common BeanUtils 和 Commons-Logging jar包

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