1. Database new table: Student_information, three fields in table, name (nvarchar (), null), sex (nvarchar (), null), age (numeric (18,0), NULL)
2. Create a new main.jsp first.
<%@ Page Language="Java"ContentType="text/html; Charset=utf-8"pageencoding="Utf-8"%><!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd "><HTML><Head><Metahttp-equiv= "Content-type"content= "text/html; charset=iso-8859-1"><title>Insert Title here</title></Head><Body><formAction= "Employeservlet"Method= "POST"> <H1Align= "Center"ID= "Biaotou"> Increase Student Information</H1> <TableAlign= "Center"> <TR> <TD>Name:<TD> <TD><inputtype= "text"name= "Emplyname"value=""/></TD> <TR> <TR> <TD>Gender:</TD> <TD><inputtype= "Radio"name= "Sex"value= "Male">male<inputtype= "Radio"name= "Sex"value= "female">female</TD> </TR> <TR> <TD>Age:<TD> <TD><inputtype= "text"name= "Age"value=""/></TD> <TR> <TR> <TD><TD> <TD><Buttontype= "Submit"value= "Submit">Submit</Button></TD> <TR> </Table></form></Body></HTML>
3. Create a new employ class that holds student attributes
Package Testjsp;public class Employ {private string name;private string sex;private int age; public void SetName (String name) { this.name=name; } Public String GetName () { return this.name; } public void setsex (String sex) { this.sex=sex; } Public String Getsex () { return this.sex; } public void Setage (int.) { this.age=age; } public int getage () { return this.age; } }4. Create a new testjsp class, get the data, connect to the database, insert the data
Packagetestjsp;Importjava.io.IOException;Importjava.sql.Connection;ImportJava.sql.Driver;ImportJava.sql.DriverManager;Importjava.sql.PreparedStatement;Importjava.sql.SQLException;Importjavax.servlet.ServletException;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;Importtest. Employeservlet; Public classtestjsp { Public BooleanAddemploy (employ ee) {System.out.println (Ee.getname ()); System.out.println (Ee.getsex ()); System.out.println (Ee.getage ()); String a=Ee.getname (); String b=Ee.getsex (); intC=Ee.getage (); System.out.println (A+b+c); String URL= "Jdbc:sqlserver://localhost:1433;databasename=test_cal"; String USER= "SA"; String PASSWORD= "XXXXXX"; Connection Conn=NULL; PreparedStatement pstmt=NULL; Try{ //Load DriverClass.forName ("Com.microsoft.sqlserver.jdbc.SQLServerDriver"); //get a database connectionconn=(Connection) drivermanager.getconnection (Url,user,password); SYSTEM.OUT.PRINTLN (conn); String SQL= "INSERT into student_information (name,sex,age) VALUES (?,?,?)"; Pstmt=conn.preparestatement (SQL); Pstmt.setstring (1, Ee.getname ()); Pstmt.setstring (2, Ee.getsex ()); Pstmt.setint (3, Ee.getage ()); Pstmt.execute (); }Catch(ClassNotFoundException e) {e.printstacktrace (); }Catch(SQLException e) {e.printstacktrace (); } return true; } Public Static voidMain (string[] args) {//testjsp n=new testjsp (); //N.addemploy ();}}
5. Create a new servlet class
Packagetest;Importjava.io.IOException;Importjavax.servlet.ServletException;ImportJavax.servlet.annotation.WebServlet;ImportJavax.servlet.http.HttpServlet;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;Importtestjsp. employ;Importtestjsp. testjsp;/*** Servlet Implementation class Employeservlet*/@WebServlet ("/employeservlet") Public classEmployeservletextendsHttpServlet {Private Static Final LongSerialversionuid = 1L; /** * @seeHttpservlet#httpservlet ()*/ PublicEmployeservlet () {Super(); //TODO auto-generated Constructor stub } /** * @seeHttpservlet#doget (httpservletrequest request, httpservletresponse response)*/ protected voidDoget (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException {//TODO auto-generated Method Stub//response.getwriter (). Append ("Served at:"). Append (Request.getcontextpath ()); } /** * @seeHttpservlet#dopost (httpservletrequest request, httpservletresponse response)*/ Public voidDoPost (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException {//TODO auto-generated Method Stubdoget (request, response); Request.setcharacterencoding ("UTF-8"); Response.setcontenttype ("Text/html;charset=utf-8"); //string Name=new string (Request.getparameter ("Emplyname"). GetBytes ("Iso-8859-1"), "Utf-8 ");//Found the answer, do not know how to useString name=request.getparameter ("Emplyname"); String Sex=request.getparameter ("Sex"); String Age=request.getparameter ("Age"); Employ EM=Newemploy (); Em.setname (name); Em.setsex (Sex); Em.setage (Integer.parseint (age)); SYSTEM.OUT.PRINTLN (name); SYSTEM.OUT.PRINTLN (Sex); System.out.println (Integer.parseint (age)); testjsp te=Newtestjsp (); Te.addemploy (EM); } }
6. Create a new Web. xml
<?xml version= "1.0" encoding= "UTF-8"?>
<web-app>
<welcome-file-list>
<welcome-file>MainPage.jsp</welcome-file>
</welcome-file-list>
<servlet>
<!--servlet name, must be consistent with Servlet-name in servlet-mapping--
<servlet-name>EmployeServlet</servlet-name>
<!--the location of the servlet class--
<servlet-class>test. Employeservlet</servlet-class>
</servlet>
<servlet-mapping>
<!--the servlet name, which must be the same as the servlet-name above--
<servlet-name>EmployeServlet</servlet-name>
<url-pattern>/EmployeServlet/</url-pattern>
</servlet-mapping>
</web-app>
A simple small program to get data into a database from a Web page
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