在JSP中获取类,接口或枚举预期错误

时间:2018-02-25 23:59:00

标签: java jsp

所以我对JSP很新,但我一直在jsp中获得类,接口或枚举预期错误。

我是否必须将scriptlet嵌套在声明本身中?

<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>

        <%! 
            PreparedStatement psmt;
            Connection con;
             public void jspInit(){
                try{
                con = DriverManager.getConnection("jdbc:mysql://localhost:3306/JSPData?zeroDateTimeBehavior=convertToNull", "root","root");
                psmt = con.prepareStatement("Insert into jspData Values(?,?,?)");

                }
                catch(Exception e){}
            }
        %>
        <%!
           String uname;
           String pwd;
           String email;%>

        <% 
            uname= request.getParameter("uname");
            pwd = request.getParameter("pwd");
            email=request.getParameter("email");

            psmt.setString(1,uname);
            psmt.setString(2,pwd);
            psmt.setString(3,email);
            int i=stmt.executeUpdate();
            if(i>0){
           out.println("<h2>Record Inserted</h2>");
            }
        %>

        <%! 
            public void jspDestroy() {
                try {
                    con.close();
                }
                catch(Exception e){
                e.printStackTrace();}
                }
            }
        %>

    </body>
</html>

更具体地说,我在我的代码中得到了这些错误:

    pwd = request.getParameter("pwd");
    email=request.getParameter("email");

    psmt.setString(1,uname);
    psmt.setString(2,pwd);
    psmt.setString(3,email);
    int i=stmt.executeUpdate();
    if(i>0){
   out.println("<h2>Record Inserted</h2>");
    }

我特别不明白为什么我没有收到uname= request.getParameter("uname");行的错误,但是我在下面的密码和电子邮件的类似初始化中得到了它。

0 个答案:

没有答案