JSP与Java类交互示例-优快云博客

多好呀，没配置文件，没有jar!Jsp中new一个！让你学了半天Java也能用上！写磁盘还是在原来的基础上加入新条目！

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>www.188029.net</title>
</head>
<body>
	<%@ page import="business.*, data.*"%>
	<%
		String firstName = request.getParameter("firstName");
	    firstName=new String(firstName.getBytes("iso-8859-1"), "utf-8");
		String lastName = request.getParameter("lastName");
		lastName=new String(lastName.getBytes("iso-8859-1"), "utf-8");
		String emailAddress = request.getParameter("emailAddress");
		emailAddress=new String(emailAddress.getBytes("iso-8859-1"), "utf-8");
		System.out.println(firstName);
		User user = new User(firstName, lastName, emailAddress);
		UserIO.addRecord(user, "d:///UserEmail.txt");
	%>

	<h1>Thanks for joining our email list</h1>

	<p>Here is the information that you entered:</p>

	<table  border="1">
		<tr>
			<td align="right">First name:</td>
			<td><%=user.getFirstName()%></td>
		</tr>
		<tr>
			<td align="right">Last name:</td>
			<td><%=user.getLastName()%></td>
		</tr>
		<tr>
			<td align="right">Email address:</td>
			<td><%=user.getEmailAddress()%></td>
		</tr>
	</table>

	<p>
		To enter another email address, click on the Back <br> button in
		your browser or the Return button shown <br> below.
	</p>

	<form action="index.html" method="post">
		<input type="submit" value="Return">
	</form>

</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>西安小升初</title>
</head>
<body>
<form id="form1" name="form1" method="post" action="do_it.jsp">
		<p>
			firstName: <input type="text" name="firstName"  />
		</p>
		<p>
			lastName: <input type="text" name="lastName"  />
		</p>
		<p>
			emaiAddress:  <input type="text" name="emailAddress"  />
			                                      
		</p>
		<p>
			<input type="submit" name="ok"  value="提交" />
		</p>
	</form>
</body>
</html>

package business;

public class User {
	private String firstName;
	private String lastName;
	private String emailAddress;

	public User() {
	}

	public User(String first, String last, String email) {
		firstName = first;
		lastName = last;
		emailAddress = email;
	}

	public String getFirstName() {
		return firstName;
	}

	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}

	public String getLastName() {
		return lastName;
	}

	public void setLastName(String lastName) {
		this.lastName = lastName;
	}

	public String getEmailAddress() {
		return emailAddress;
	}

	public void setEmailAddress(String emailAddress) {
		this.emailAddress = emailAddress;
	}

}

package data;
import java.io.*;
import business.User;

public class UserIO {
	public synchronized static void addRecord(User user, String filename)
			throws IOException {
		PrintWriter out = new PrintWriter(new FileWriter(filename, true));
		out.println(user.getEmailAddress() + "|" + user.getFirstName() + "|"
				+ user.getLastName());
		out.close();
	}
}