创建一个简单的web项目

实现效果如下
在这里插入图片描述

表单代码

<form action="stu" method="get">
学号：<input type="text" name="id"><br>
姓名：<input type="text" name="name"><br>
<input type="submit" value="确定">
<input type="reset" value="重置">
</form>

学生类

public class Student {
	private String sno;
	private String name;
	public String getSno() {
		return sno;
	}
	public void setSno(String sno) {
		this.sno = sno;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Student(String id,String name) {
		this.sno=id;
		this.name=name;
	}
}

FirstServlet处理

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String id=request.getParameter("id");
		String name=request.getParameter("name");
		Student stu=new Student(id,name);
		ServletContext ser=getServletContext();
		ser.setAttribute("id", stu.getSno());
		ser.setAttribute("name", stu.getName());
		RequestDispatcher rd=ser.getRequestDispatcher("/SecondServlet");
		rd.forward(request, response);
	}

转发到SecondServlet处理

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter p=response.getWriter();
		ServletContext ser=getServletContext();
		p.println("<html>");
	    p.println("<head>");
	    p.println("</head>");
	    p.println("<body>");
	    p.println("<center><a href=\"http://localhost:8080/实验四/input.html\">返回</a><h3>");
	    p.println("<h3>学号："+ser.getAttribute("id")+"</h3><p>");
	    p.println("<h3>姓名："+ser.getAttribute("name")+"</h3><p></center>");	    
	    p.println("</body>");
	    p.println("</html>");
	}

web.xml

    <servlet>
     <servlet-name>FirstServlet</servlet-name>
     <servlet-class>实验四.FirstServlet</servlet-class>
  </servlet>
  <servlet-mapping>
     <servlet-name>FirstServlet</servlet-name>
     <url-pattern>/stu</url-pattern>
  </servlet-mapping>

原文链接：https://blog.csdn.net/weixin_43470822/article/details/103585409