《Ajax注冊驗(yàn)證》word版

1、.1.客戶端:JSP Java代碼 1. 2. 3. 4. index.jsp 5. 6. 37. 38. 39. 40. 用戶注冊！ 41. 42. 用戶名： 43. * 44. 45. 46. 密碼： 47. 48. 49. 50. 51. 52. index.jsp用戶注冊！用戶名：*密碼：2.服務(wù)端:Servlet Java代碼 1. packageservlet; 2. 3. importjava.io.IOException; 4. importjava.io.PrintWriter; 5. importjavax.servlet.ServletException; 6. impo

2、rtjavax.servlet.http.HttpServlet; 7. importjavax.servlet.http.HttpServletRequest; 8. importjavax.servlet.http.HttpServletResponse; 9. 10. publicclassServerPortextendsHttpServlet 11. 12. privatestaticfinallongserialVersionUID=1L; 13. 14. publicvoiddoPost(HttpServletRequestrequest,HttpServletResponser

3、esponse)throwsServletException,IOException 15. response.setContentType(text/html;charset=GBK); 16. StringuserName=request.getParameter(username); 17. PrintWriterout=response.getWriter(); 18. if(userName.trim().length()=0|userName=null) 19. out.println(用戶名不能為空!); 20. elseif(neyjar.equals(userName) 21

4、. out.println(用戶已存在!); 22. else 23. out.println(可以使用此用戶名!); 24. 25. 26. 27. publicvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException 28. doPost(request,response); 29. 30. 31. package servlet;import java.io.IOException;import java.io.PrintWriter;import

5、javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class ServerPort extends HttpServletprivate static final long serialVersionUID = 1L;public void doPost(HttpServletRequest request, Ht

6、tpServletResponse response) throws ServletException, IOException response.setContentType(text/html;charset=GBK);String userName = request.getParameter(username);PrintWriter out = response.getWriter();if(userName.trim().length()=0|userName=null)out.println(用戶名不能為空!);else if(neyjar.equals(userName)out.println(用戶已存在!);elseout.println(可以使用此用戶名!);public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException doPost(request, response);3.web.xml中配置那個(gè)Servlet: Java代碼 1. 2. servletPort 3. servlet.ServerP