<%@ page language="java" pageEncoding="UTF-8" %> <% String formType = request.getParameter("formType"); String fieldId = request.getParameter("fieldId"); String fieldValue = request.getParameter("fieldValue"); if (fieldValue == null) { fieldValue = request.getParameter("account"); } System.out.println("formType=" + formType + ", fieldId=" + fieldId + ", fieldValue=" + fieldValue); if (fieldValue.equals("Account")) { out.print("[\"account\", true]"); // true表示唯一 } else { out.print("[\"account\", false]"); // false非唯一 } %>