📄 deleteservlet.java
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package myBookServlet;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import dao.*;
import Bean.*;
public class DeleteServlet extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
String id = request.getParameter("id");
out.println("<html>");
out.println("<head><title>DeleteServlet</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
myaddressDao dao = new myaddressDao();
String sql = "delete from myaddress where id = "+Integer.parseInt(id)+"";
int n = dao.DeleteUser(sql);
if(n > 0){
out.println("<h1>成功删除ID为："+id+"用户名!</h1><br>");
out.println("<h2><a href=myaddrbook>返回主页!</a></h2>");
}
else{
out.println("<h1>没有成功删除ID为："+id+"用户名!</h1>");
out.println("<h2><a href=myaddrbook>返回主页!</a></h2>");
}
response.addHeader("refresh","5,url=myaddrbook");
out.println("</body>");
out.println("</html>");
out.close();
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}
//Clean up resources
public void destroy() {
}
}
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