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使用jstl，引用jstl.1.2
jsp开头为 <%@ page language="java" contentType="text/html; charset=UTF-8" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html>默认的方法 <select class="form-control" id="sex" name="sex"> <option value="男">男</option> <option value="女" <c:if test="${buyer.sex=='女'}">selected="selected"</c:if> >女</option> </select>
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