这个异常是怎么回事呀???
--- test.jsp ---
...................
try {
smartupload.upload(); // 上传文件
} catch (Exception e) {
System.err.println(e);
response.sendRedirect("err.jsp");
}
...................
--- 异常信息如下 ---
java.lang.IllegalStateException: Can't sendRedirect() after data has committed to the client.
怎么回事???求教`````