在servlet中写javaScript的alert语句不好使！！！急急急!!!!在线等待....
提问 ：从HTML页面跳到servlet，处理完毕之后想用
out.print( " <script> alert(\ "对不起！因为您超出一个月没有登录，您的帐户已经被冻结，请您点击确认激活..\ "); </script> ");
输出脚本对话框，但是没有反应...而是直接跳到了后续的处理业务中....
package empmanager.servlet;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import empmanager.comm.DB;
public class LoginServlet 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();
DB db = new DB();
HttpSession session = request.getSession();
String name = request.getParameter( "loginname ");
String password = request.getParameter( "password ");
int info = db.proc_login(name, password); // 得到用户距上次登录的时间差（月数）
if (info == 1) {
session.setAttribute( "loginor ", name);
response.sendRedirect( "empservlet ");
} else if (info == 2) {
out.print( " <script> alert(\ "对不起！因为您超出一个月没有登录，您的帐户已经被冻结，请您点击确认激活..\ "); </script> ");
session.setAttribute( "loginor ", name);
response.sendRedirect( "activationservlet "); // 跳转到激活servlet
} else if (info == 3) {
out.print( " <script> alert(\ "对不起！因为您超出三个月没有登录，您的帐户已经被注销，请您点击确认注册..\ "); </script> ");
request.getRequestDispatcher( "failservlet?loginor= "+name).forward(request,response); // 跳转到销毁帐户的servlet
} else if (info == -1) {
session.setAttribute( "loginmessage ", "用户名密码错误... ");
response.sendRedirect( "message.jsp ");
} else if (info == -2) {
session.setAttribute( "loginmessage ", "数据库正在维修... ");
response.sendRedirect( "message.jsp ");
} else {
session.setAttribute( "loginmessage ", "应用程序出错,请您稍后再试... ");
response.sendRedirect( "message.jsp ");
}
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() {
}
}
[解决办法]
请确认执行了else if (info == 2)了吗?
[解决办法]
看看你输出后的html的源代码里有alert没有
