如题!

解决方案 »

  1.   

    写完整点啊 request.getContext()有返回值吗?是什么类型
    往apllication里邦定对象也是 setAttribute()方法?
      

  2.   

    我在jsp页面中的代码如下:
    <%
      pageContext.setAttribute("a", "ok");
      request.setAttribute("b", "ok");
      session.setAttribute("c", "ok");
      application.setAttribute("d", "ok");
    %>***************************
    该jsp页面被转换为Servlet后的java源代码如下:
    package org.apache.jsp;import javax.servlet.*;
    import javax.servlet.http.*;
    import javax.servlet.jsp.*;public final class a_jsp extends org.apache.jasper.runtime.HttpJspBase
        implements org.apache.jasper.runtime.JspSourceDependent {  private static java.util.List _jspx_dependants;  public Object getDependants() {
        return _jspx_dependants;
      }  public void _jspService(HttpServletRequest request, HttpServletResponse response)
            throws java.io.IOException, ServletException {    JspFactory _jspxFactory = null;
        PageContext pageContext = null;
        HttpSession session = null;
        ServletContext application = null;
        ServletConfig config = null;
        JspWriter out = null;
        Object page = this;
        JspWriter _jspx_out = null;
        PageContext _jspx_page_context = null;
        try {
          _jspxFactory = JspFactory.getDefaultFactory();
          response.setContentType("text/html;charset=GBK");
          pageContext = _jspxFactory.getPageContext(this, request, response,
           null, true, 8192, true);
          _jspx_page_context = pageContext;
          application = pageContext.getServletContext();
          config = pageContext.getServletConfig();
          session = pageContext.getSession();
          out = pageContext.getOut();
          _jspx_out = out;      out.write("\r\n");
          out.write("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\r\n");
          out.write("<head>\r\n");
          out.write("\t<title>a.jsp</title>\r\n");
          out.write("</head>\r\n");
          out.write("<body>\r\n");
          out.write("\t");      pageContext.setAttribute("a", "ok");
          request.setAttribute("b", "ok");
          session.setAttribute("c", "ok");
          application.setAttribute("d", "ok");

          out.write("\r\n");
          out.write("</body>\r\n");
          out.write("</html:html>\r\n");
        } catch (Throwable t) {
          if (!(t instanceof SkipPageException)){
            out = _jspx_out;
            if (out != null && out.getBufferSize() != 0)
              out.clearBuffer();
            if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
          }
        } finally {
          if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
        }
      }
    }
    lz现在明白了吧。Servlet中的ServerContext就是jsp中的application对象,
    在Servlet中调用:this.getServletContext().setAttribute("aaa", "bbb");即可。