main.jsp 771 B

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  1. <%--
  2. Created by IntelliJ IDEA.
  3. User: x'b'w
  4. Date: 2021/5/21
  5. Time: 18:49
  6. To change this template use File | Settings | File Templates.
  7. --%>
  8. <%@ page contentType="text/html;charset=UTF-8" language="java" %>
  9. <html>
  10. <head>
  11. <title>作用域</title>
  12. </head>
  13. <body>
  14. <h1>main</h1>
  15. <%--比较4种作用域--%>
  16. <%-- pageContext--%>
  17. <%--request--%>
  18. <%
  19. request.setAttribute("name","bean");
  20. // request.getRequestDispatcher("target.jsp").forward(request,response);
  21. %>
  22. <%--session--%>
  23. <%
  24. session.setAttribute("name02","zq");
  25. // response.sendRedirect("target.jsp");
  26. %>
  27. <%--application--%>
  28. <%
  29. application.setAttribute("name03","tmqq");
  30. response.sendRedirect("target.jsp");
  31. %>
  32. </body>
  33. </html>