ajax功能1-servlet

package ajax;


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 ValidateUsernameServlet extends HttpServlet {




public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
System.out.println("哈哈哈哈哈哈啊哈哈哈哈哈哈啊哈哈哈哈啊哈哈哈啊哈哈");
request.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String username = request.getParameter("username");
if(username.equalsIgnoreCase("liushuai")){
response.getWriter().print("1");
}
else{
response.getWriter().print("0");
}
}


}