Question

只需使用jsp将数据从HTML表单插入MySQL中的数据库即可。但是我无法运行此代码。愿任何人请帮助我。我想以一种方式运行它，以便使用表单的html页面中的表单标记的action属性调用jsp代码。文件名：dbcon.jsp

<%@page import="org.apache.tomcat.util.http.fileupload.IOUtils"%>
<%@ page import= "java.io.*,java.util.*,java.sql.*"%>
 <%@ page import= "javax.servlet.http.*,javax.servlet.*"%>

<%
String str = "sub";
if(str.equals(request.getParameter("sub"))){
    String choice;

    String user = request.getParameter("txtUser");
    String pass  = request.getParameter("txtPass");
    String addr  = request.getParameter("add");
    //String FOI  = request.getParameter(choice);
    String gend = request.getParameter("optGender"); 
    String lang1 = request.getParameter("lang"); 
    String cntry1 = request.getParameter("cntry");
    File image = new File("fileupload");
    FileInputStream fis = new FileInputStream(image);
        try {

            Class.forName("com.mysql.jdbc.Driver");
            System.out.println("Loaded driver");
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/Form","root","root");
            System.out.println("Connected!");
            PreparedStatement ps1 = con.prepareStatement("Insert into application values(?,?,?,?,?,?,?,?)");
            ps1.setString(1, user);
            ps1.setString(2, pass);
            ps1.setString(3, addr);
            ps1.setString(4, FOI);
            ps1.setString(5, gend);
            ps1.setString(6, lang1);
            ps1.setString(7, cntry1);
            ps1.setBinaryStream(8, (InputStream)fis, (int)(image.length()));
            int s = ps1.executeUpdate();

            if(s>0)
            {
                %>
                <b><font color = Blue>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
                <%out.println("Submission Successful!");%>
                </font></b>
                <%
            }
            else{
                out.println("Unsuccessful submission");
            }
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }   //forname() belongs to Driver class
        catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
}

%>

Answer 1

为上面的代码创建一个jsp的servlet ..

之后在web.xml中指定servlet。

<servlet>
<servlet-name>dbcons</servlet-name>
<servlet-class>full_packge_name.dbcon</servlet-class>
</servlet>

然后在html表单标记中指定dbcons。（在web.xml servlet-name标记中指定的dbcons）

<form method=POST action="dbcons">
</form>

这就是你需要的......

如何运行此代码？

1 个答案: