WEB开发代码错误

[Aohanhh]

这是Myeclipse中的一段代码，页面报错，请问下哪里错了，怎么修改

org.apache.jasper.JasperException: An exception occurred processing JSP page /saveregister.jsp at line 15

12: + path + "/";
13: %>
14:
15: <%
16: out.println("不能为空，2秒后返回重新输入！");
17: String username = request.getParameter("username");
18: String password = request.getParameter("password");

<%

String username = request.getParameter("username");
String password = request.getParameter("password");
String sex = request.getParameter("sex");
String age = request.getParameter("age");
String telephone = request.getParameter("telephone");
String email = request.getParameter("email");
String msg = null;
username = convert(username);
sql = "select * from student where username='" + username + "'";
rs = stm.executeQuery(sql); //查询数据库
if (!rs.next()) {//如果不存在

sex = convert(sex);
age = convert(age);

sql = "insert into student(username,password,sex,birth,age,telephone,email)values('"
+ username
+ "','"
+ password
+ "','"
+ sex
+ "','"
+ age
+ "','"
+ telephone
+ "','"
+ email + "')";
stm.executeUpdate(sql); //插入数据库中
msg = "恭喜你，已注册成功！";
response.sendRedirect("login.html");
} else {//如果注册用户已存在
msg = "你所注册的用户已经存在，请你重新注册！";
out
.println("<center><font color=green size=5>提示信息：<hr></font><font color=red size=4>"
+ msg + "</font><hr>");
out
.println("<input type=button value=回上一页 onclick=history.back();>");
}
%>
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[吾省]

估计是15行的<%没有对应的结束符，然后在18行下面又有引用java代码的开始符号报错的吧