当我创建updatejspmysql时，我不断得到mysqlsyntaxerrorexception。

String id_user = request.getParameter("id_login");    
String name_cust = request.getParameter("name_cust");
String password = request.getParameter("password");
String email = request.getParameter("email");
String no_phone = request.getParameter("no_phone");

Statement st = CON.createStatement();
//ResultSet rs;
int i = st.executeUpdate("UPDATE signup SET id_login='"+id_user+"',name_cust='"+name_cust+"', password='"+password+"'email='"+email+"',no_phone='"+no_phone+"', WHERE id_user='"+id_user+"'");