freemarker应用(三)
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2022-07-15 16:27:16
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1. select下拉框的实现
12.ftl
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<#import "/inc/select.ftl" as my/>
<@my.select id="address" datas=["北京","天津","上海"]/>
<@my.select id="sex" datas=["选择性别","男","女"] value="男"/>
<@my.select id="username" datas=users key="id" text="name"
headkey="-1" headtext="请选择用户"/>
<@my.select id="stu" datas=stus key="no" text="name"
headkey="-1" headtext="请选择学生"/>
<@my.select id="sex" datas={"0":"男","1":"女"} value="1"/>
</body>
</html>
select.ftl
<#macro select id datas value="" key="" text="" headkey="" headtext="">
<select id="${id}" name="${id}">
<#if headkey!="">
<option value="${headkey}">${headtext}</option>
</#if>
<#if datas?is_hash_ex>
<#local keys=datas?keys/>
<#list keys as key>
<#if key==value>
<option value="${key}" selected>${datas[key]}</option>
<#else>
<option value="${key}">${datas[key]}</option>
</#if>
</#list>
<#else>
<#list datas as data>
<#if key!="">
<#if value==data[key]?string>
<option value="${data[key]}" selected>${data[text]}</option>
<#else>
<option value="${data[key]}">${data[text]}</option>
</#if>
<#else>
<#if value==data>
<option value="${data}" selected>${data}</option>
<#else>
<option value="${data}">${data}</option>
</#if>
</#if>
</#list>
</#if>
</select>
</#macro>
test12
@Test
public void test12() {
Map<String,Object> root = new HashMap<String,Object>();
List<User> users = Arrays.asList(new User(1,"张三",22),
new User(2,"李四",33),
new User(3,"王五",44));
root.put("users",users);
List<Student> stus = Arrays.asList(new Student("123123", "地点"),new Student("11111","方法"));
root.put("stus", stus);
fu.print("12.ftl", root);
fu.fprint("12.ftl",root,"12.html");
}
输出
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <select id="address" name="address"> <option value="北京">北京</option> <option value="天津">天津</option> <option value="上海">上海</option> </select> <select id="sex" name="sex"> <option value="选择性别">选择性别</option> <option value="男" selected>男</option> <option value="女">女</option> </select> <select id="username" name="username"> <option value="-1">请选择用户</option> <option value="1">张三</option> <option value="2">李四</option> <option value="3">王五</option> </select> <select id="stu" name="stu"> <option value="-1">请选择学生</option> <option value="123123">地点</option> <option value="11111">方法</option> </select> <select id="sex" name="sex"> <option value="0">男</option> <option value="1" selected>女</option> </select> </body> </html>
2. 实现分页
13.ftl
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <#import "/inc/pager.ftl" as my/> <@my.pager url="#" totalPage=150 curPage=14 class="pagers" showPageNum=20/> </body> </html>
pager.ftl
<#macro pager url totalPage curPage=1 class="" showPageNum=15>
<#local halfPage=(showPageNum/2)?int/>
${halfPage}
<#if (halfPage>=curPage)>
<@showPage start=1 end=curPage url=url class=class curPage=curPage/>
<@showPage start=curPage+1 end=showPageNum curPage=curPage url=url class=class/>
<#else>
<@showPage start=curPage-halfPage end=curPage url=url class=class curPage=curPage/>
<#if (curPage+halfPage>totalPage)>
<#local endPage=totalPage/>
<#else>
<#local endPage=curPage+halfPage/>
</#if>
<@showPage start=curPage+1 end=endPage url=url class=class curPage=curPage/>
</#if>
</#macro>
<#macro showPage start end curPage url class>
<#list start..end as page>
<#if curPage==page>
[${page}]
<#else>
<a href="${url}" class="${class}">${page}</a>
</#if>
</#list>
</#macro>
test13
@Test
public void test13() {
Map<String,Object> root = new HashMap<String,Object>();
fu.print("13.ftl", root);
fu.fprint("13.ftl",root,"13.html");
}
输出
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> 10 <a href="#" class="pagers">4</a> <a href="#" class="pagers">5</a> <a href="#" class="pagers">6</a> <a href="#" class="pagers">7</a> <a href="#" class="pagers">8</a> <a href="#" class="pagers">9</a> <a href="#" class="pagers">10</a> <a href="#" class="pagers">11</a> <a href="#" class="pagers">12</a> <a href="#" class="pagers">13</a> [14] <a href="#" class="pagers">15</a> <a href="#" class="pagers">16</a> <a href="#" class="pagers">17</a> <a href="#" class="pagers">18</a> <a href="#" class="pagers">19</a> <a href="#" class="pagers">20</a> <a href="#" class="pagers">21</a> <a href="#" class="pagers">22</a> <a href="#" class="pagers">23</a> <a href="#" class="pagers">24</a> </body> </html>
3. 实现文章模块
14.ftl
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<#macro showArt cid titleNum>
<#nested>
<#local articles=arts[cid]/>
<#list articles as art>
<li><span><a href="">
<#if (art.title?length>titleNum)>
${art.title[0..titleNum]}...
<#else>
${art.title}
</#if>
</span></a>
</li>
</#list>
</#macro>
<@showArt cid="1" titleNum=7>
<h1>水水水水水水</h1>
</@showArt>
<@showArt cid="2" titleNum=10>
<h1>活活后发货后会</h1>
</@showArt>
</body>
</html>
test14
@Test
public void test14() {
Map<String,Object> root = new HashMap<String,Object>();
Map<String,List<Article>> arts = new HashMap<String,List<Article>>();
List<Article> a1 = Arrays.asList(new Article("说给焦点方法各家阿斯顿发贺卡就是地方贺卡设计", new Channel(1, "多对多")),
new Article("看似简单干净啊", new Channel(1, "多对多")),
new Article("阿斯达卡说得好斯蒂芬斯蒂芬", new Channel(1, "多对多")),
new Article("阿阿斯顿撒上所说的话", new Channel(1, "多对多")),
new Article("是地方贺卡设计", new Channel(1, "多对多")),
new Article("斯诺克打击建设的", new Channel(1, "多对多")));
arts.put("1", a1);
List<Article> a2 = Arrays.asList(new Article("你说的就是公司根据阿卡什打电话", new Channel(1, "多对多")),
new Article("个撒旦发撒旦发的时候", new Channel(1, "多对多")),
new Article("个很好的方法斯蒂芬斯蒂芬个", new Channel(1, "多对多")),
new Article("阿撒旦发撒旦发上所说的话", new Channel(1, "多对多")),
new Article("是地方贺卡设计阿斯达卡的方法撒旦发撒旦发", new Channel(1, "多对多")),
new Article("阿斯顿发撒旦发撒旦发撒旦和斯诺克打击建设的", new Channel(1, "多对多")));
arts.put("2", a2);
root.put("arts",arts);
fu.print("14.ftl", root);
fu.fprint("14.ftl",root,"14.html");
}
输出
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <h1>水水水水水水</h1> <li><span><a href=""> 说给焦点方法各家... </span></a> </li> <li><span><a href=""> 看似简单干净啊 </span></a> </li> <li><span><a href=""> 阿斯达卡说得好斯... </span></a> </li> <li><span><a href=""> 阿阿斯顿撒上所说... </span></a> </li> <li><span><a href=""> 是地方贺卡设计 </span></a> </li> <li><span><a href=""> 斯诺克打击建设的... </span></a> </li> <h1>活活后发货后会</h1> <li><span><a href=""> 你说的就是公司根据阿卡... </span></a> </li> <li><span><a href=""> 个撒旦发撒旦发的时候 </span></a> </li> <li><span><a href=""> 个很好的方法斯蒂芬斯蒂... </span></a> </li> <li><span><a href=""> 阿撒旦发撒旦发上所说的... </span></a> </li> <li><span><a href=""> 是地方贺卡设计阿斯达卡... </span></a> </li> <li><span><a href=""> 阿斯顿发撒旦发撒旦发撒... </span></a> </li> </body> </html>
freemarker讲解完毕...