c:forEach 標簽中遍歷map集合
轉自：《c:forEach 標簽中遍歷map集合》網址：https://blog.csdn.net/moxiaoya1314/article/details/53610378
后台代碼：
Map<VoteQuestion, List<VoteOption>> map = new HashMap<VoteQuestion, List<VoteOption>>();//創建一個map集合
List<VoteQuestion> lVoteQuestions = voteQuestionService.getVid(voteMainTitle.getVid()); //根據vid查詢遍歷
if(lVoteQuestions.size()>0 && lVoteQuestions!=null){
model.addAttribute("lVoteQuestions", lVoteQuestions);
for (int j = 0; j < lVoteQuestions.size(); j++) {
VoteQuestion vQuestion = lVoteQuestions.get(j);
String qid = vQuestion.getQid(); //獲取題目表中的qid
List<VoteOption> lOptions = voteOptionService.findQid(qid); //根據qid查詢遍歷VoteOption
if(lOptions.size()>0 && lOptions!=null){
model.addAttribute("lOptions", lOptions);
}
map.put(vQuestion, lOptions);
}
}
model.addAttribute("map", map);
前台代碼：
<c:forEach items="${map}" var="m" varStatus="vq">
<tr>
<td>${vq.count }</td>
<td>${fns:unescapeHtml(m.key.question)}
<c:if test="${m.key.questionType!='問答' }">
題目選項：
<c:forEach items="${m.value}" var="vOption">
<c:if test="${m.key.questionType eq '單選' }">
<input type="radio" class="i-check">${vOption.title}
</c:if>
<c:if test="${m.key.questionType eq '多選' }">
<input type="checkbox" class="i-check">${vOption.title}
</c:if>
</c:forEach>
</c:if>
</td>
<td>
<shiro:hasPermission name="vote:voteQuestion:edit">
<a href="#"
οnclick="openDialog2('修改題目信息', '${ctx}/vote/voteQuestion/form?id=${m.key.id}&vid=${voteMainTitle.vid}&isAdd=1','60%', '60%')"
class="btn btn-success btn-xs"><i class="fa fa-edit"></i>
修改</a>
</shiro:hasPermission>
<shiro:hasPermission name="vote:voteQuestion:del">
<a href="${ctx}/vote/voteQuestion/delete?id=${m.key.id}&VoteID=${voteMainTitle.id}"
οnclick="return confirmx('確認要刪除該題目信息嗎？', this.href)"
class="btn btn-danger btn-xs"><i class="fa fa-trash"></i>
刪除</a>
</shiro:hasPermission></td>
</tr>
</c:forEach>
具體實現的其他方法代碼：
<c:forEach items="${customerMap}" var="item">
<option value="${item.key }"
title="編碼:${item.value.customer_num },許可證號:${item.value.license_key },簡稱:${item.value.short_name },聯系地址:${item.value.contact_address },聯系電話:${item.value.contact_phone }">
${item.value.corporate_name }</option>
</c:forEach>
<c:foreach循環一個HashMap，map中的value為一個bean，頁面獲取key即key對應bean中的屬性，獲取value即value對應bean中的屬性
我的使用
<c:forEach items="${preTipMap}" var="map" varStatus="vq">
<c:forEach items="${map.value}" var="item">
var planName = "${item.planNum}"; //計划名稱
<c:if test="${map.key == 'inspectPlanList'}">
nextTime = "${item.nextTime}"; //下次巡檢/保養時間
</c:if>
</c:forEach>
</c:forEach>