题目：
没有题目，第三次猜数了，想怎么写怎么写吧。
没有想法，上课没有听讲缘故。
1.相对路径不会写...这个可以把文件放在一个目录下应付。
2.不知道servlet里可不可以写表单，还是只能被传参...这个再写一个跳转页面应付。
综上，考查课最后一次作业，我真的就是随便应付的实现了。//不过有时间一定会搞明白加赘述的！
页面1：input.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>Insert title here</title> </head> <body> <form name="f1" method="post" action="solve"> The random number is generated successfully! <br><br> Range [1,100], now start guessing this number: <br><br> <input type="text" name="ans"> <input type="submit" name="sub" value="确定"> </form> </body> </html>
servlet：solve.java
package anyi;
import java.io.IOException;
import java.io.PrintWriter;
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 java.lang.Math;
/**
* Servlet implementation class solve
*/
@WebServlet("/solve")
public class solve extends HttpServlet {
private static final long serialVersionUID = 1L;
public int num = (int) (Math.random() * 100) + 1; //生成随机数
public int i = 0;//记录猜测次数
/**
* @see HttpServlet#HttpServlet()
*/
public solve() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
//response.getWriter().append("Served at: ").append(request.getContextPath());
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
//doGet(request, response);
response.setCharacterEncoding("utf-8");
int ans=Integer.parseInt(request.getParameter("ans"));
PrintWriter pw = response.getWriter();
pw.print("<html><body><br>");
if (ans == num) {
i++;
pw.print("The correct answer is "+num);
pw.print("<br><br>Congratulations, you guessed it right!<br><br>"+"You guessed "+i+" times in total!");
pw.print("<br><br><a href="input.jsp">Play again</a>");
num = (int) (Math.random() * 100) + 1; //重置随机数
i = 0;//重置猜测次数
} else if (ans > num) {
i++;
pw.print("Sorry,You guess the big!<br><br>");
pw.print("<a href="try again.jsp">Please try again</a>");
}else {
i++;
pw.print("Sorry,You guess the small!");
pw.print("<a href="try again.jsp">Please try again</a>");
}
pw.print("</body></html>");
}
}
页面2：try again.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>Insert title here</title>
</head>
<body>
<br>
<form name="f1" method="post" action="solve">
try again: <input type="text" name="ans">
<input type="submit" name="sub" value="确定">
</form>
</body>
</html>