package com.demo;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/HelloUserServlet2")
public class HelloUserServlet2 extends HttpServlet {
private static final long serialVersionUID = 1L;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// 获取请求参数
String userName = request.getParameter("userName");
if (userName == null || userName.trim().isEmpty()) {
userName = "Guest";
}
// 设置响应内容类型
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
// 输出HTML内容
out.println("");
out.println("");
out.println("");
out.println("Hello User");
out.println("");
out.println("");
out.println("Hello, " + userName + "
");
out.println("");
out.println("");
}
}
}