请问这一句:userName = request.getParameter("userName" + userId);
request.getParameter("username") == null "" :request.getPara
if (Session["UserName"] == null || Session["UserName"].ToStr
com.Parameters.AddWithValue("@userName",userName);
S_USERNAME=:USERNAME AND S_PASSWORD=:PASSWORD";
关于Trim()string UserName = txtUserName.Text;和string UserName
request.getparameter("name")
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