請求轉寄 jsp:forward和sendRedirect的區別

來源:互聯網
上載者:User

 

 jsp:forward和sendRedirect的區別

response.sendRedirect():

 

Index.jsp

<%out.println("aaaaaaaaaaaaa");response.sendRedirect("/Forward_sendRedirect/Jsp1.jsp?name=ken");out.println(".....");%>

 

翻譯成index_jsp.java後:

。。。。。。。。。。。。。。。。。。。。。。

  

 try {      response.setContentType("text/html");      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.println("aaaaaaaaaaaaa");response.sendRedirect("/Forward_sendRedirect/Jsp1.jsp?name=ken");out.println("....."); } catch (java.lang.Throwable t)

。。。。。。。。。。。。。。。。。。。。。。。。

 

 

 

<jsp:forwardpage=" "/>

Index.jsp:

<html><body><p> this isindex.jsp </p><%System.out.println("000"); %><jsp:forward page="Jsp1.jsp"/><%System.out.println("111");%></body></html>

 

翻譯成index_jsp.java後:

。。。。。。。。。。。。。。。。。。。。。。

try {      response.setContentType("text/html");      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("<html>\r\n");      out.write("<body>\r\n");      out.write("<p> this is index.jsp </p>\r\n");System.out.println("000");      out.write('\r');      out.write('\n');      if (true) {        _jspx_page_context.forward("Jsp1.jsp");        return;      }      out.write('\r');      out.write('\n');System.out.println("111");      out.write("\r\n");      out.write("</body>\r\n");      out.write("</html>");} catch (java.lang.Throwable t) {

 

 

 

<jsp:forward page="Jsp1.jsp"/>

等價於:

       _jspx_page_context.forward("Jsp1.jsp");

        return;

   

關於參數傳遞:

http://localhost:8080/Forward_sendRedirect/index.jsp?name=ken

跳轉後,等價於訪問

http://localhost:8080/Forward_sendRedirect/Jsp1.jsp?name=ken

訪問index.jsp時的參數被傳遞到了目標Jsp1.jsp

而response.sendRedirect()是不行的

 

 引用尚學堂的資料:

 

 

 

 

 

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