📄 loggingservlet.java
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package ebookshop.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoggingServlet extends HttpServlet
{
//处理客户端发过来的userName和passWord
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
request.setCharacterEncoding("gb2312");
String userName=request.getParameter("userName");
System.out.println(userName);
String passWord=request.getParameter("passWord");
System.out.println(passWord);
ConnectionCustomer cc=new ConnectionCustomer();
String resp=cc.getData(userName, passWord); //call ConnectionCustomer 的getData()并把还回值赋给resp
if(resp!=null && resp.equals("ok"))
{
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title> My shopping mall </title>");
out.println("</head>");
out.println("<body><div align='center'>");
out.println("<h1> <font color='blue'> 欢 迎 您 光 顾 我 们 的 网 上 书 店! </font> </h1>");
out.println ("<form action='bookList' method='GET' title='book form'> <br>");
out.println("<input type=submit value='购物请进入'> ");
out.println("</form> <br>");
out.println ("<form action='notbuy' method='GET' title='notBuy form'> <br>");
out.println("<input type=submit value='取消购物!'> ");
out.println("</form> <br>");
out.println("</div></body>");
out.println("</html> ");
out.close();
out.flush();
out.close();
}
if(resp.equals("no")||resp==null)
{
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
out.println("<html><head><title>Sorry!</title></head>");
out.println("<body><div align='center'><h4>您的用户名或密码有误,请点击</h4>"+
"<a href='/ebookShop/httpPage/log.html'><h2><b> 重新登陆</b></h2></a>");
}
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
doPost(request, response);
}
}
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