重定向又是什麼「垃圾」——教你再分類

  前言:以前寫了幾篇JSP的博客,如今又回過頭來看Servlet,溫故而知新,再回顧回顧,總會有收穫的。之前學習Servlet感受內容不少,如今看的時候,其實也沒多少東西,只需知道Servlet的生命週期,Servlet的實現方式,ServletContext做用域,接收和響應,轉發和重定向,我以爲差很少夠用了。固然,要是細究的話也不止這些,我針對的是新手。
  
  轉發與重定向簡html

  package servlet;
  
  import javax.servlet.ServletContext;
  
  import javax.servlet.ServletException;
  
  import javax.servlet.annotation.WebServlet;
  
  import javax.servlet.www.seocelve.comhttp.HttpServlet;
  
  import javax.servlet.http.HttpServletRequest;
  
  import javax.servlet.http.HttpServletResponse;
  
  import java.io.IOException;
  
  @WebServlet("/login")
  
  public class ServletDemo extends HttpServlet {
  
  @Override
  
  protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  
  //經過轉發帶數據
  
  req.setAttribute("name","張三");
  
  req.getRequestDispatcher("/send.jsp").forward(req,resp);
  
  import javax.servlet.ServletContext;
  
  import javax.servlet.ServletException;
  
  import javax.servlet.annotation.WebServlet;
  
  import javax.servlet.http.HttpServlet;
  
  import javax.servlet.http.HttpServletRequest;
  
  import javax.servlet.http.HttpServletResponse;
  
  import java.io.IOException;
  
  @WebServlet("/login"www.leyouzaixan.cn)
  
  public class ServletDemo extends HttpServlet {
  
  @Override
  
  protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  
  //經過重定向帶數據
  
  ServletContext servletContext = this.getServletContext();
  
  servletContext.setAttribute("name","王二麻子");
  
  protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  
  <form action="CountServlet" method="post">
  
  <h3>加法計算器</h3>
  
  加數1:<input type=www.yisheng3yuL.com"number" name="one">
  
  加數2:<input type="number" name=www.zbzxyL12.com"two">
  
  <input type="submit" value="計算">
  
  </form>
  
  </body>
  
  </html>java

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