freemarker迭代list、map等常规操作
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freemarker迭代list、map等常规操作
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一、controller開始準備模型、數據
1.po類
package com.hbut.ssm.po;/*** pojo類**/ public class Children {private String name;private Integer age;private String gender;public Children(String name, Integer age, String gender) {super();this.name = name;this.age = age;this.gender = gender;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public String getGender() {return gender;}public void setGender(String gender) {this.gender = gender;}} 2.模型數據準備 @RequestMapping("/freemarker")public String index(Model model,HttpServletRequest request){//1.迭代listList<Children> childrenList= new ArrayList<Children>();childrenList.add(new Children("張三", 25, "男"));childrenList.add(new Children("李四", 28, "男"));childrenList.add(new Children("小紅", 22, "女"));//2.迭代mapMap<String,Object> userMap = new HashMap<String,Object>();userMap.put("address","wuhan");userMap.put("birthday","11月01");userMap.put("phone",null);//3.迭代常規對象model.addAttribute("flag",1);model.addAttribute("home","wuhan");//list、map添加進modelmodel.addAttribute("childrenList",childrenList);model.addAttribute("userMap",userMap);return "free";}說明：數據有常規String、list、map的數據，需要freemarker頁面解析數據
二、freemarker常用解析指令 <Html><head><title>lerning---freemarker</title></head><body>1.list iterator<table border="1" cellspacing="0" cellpadding="20"><!--1. list--><#list childrenList as chilren> <tr> <td>${chilren.name}</td><td>${chilren.age}</td><td>${chilren.gender}</td></tr></#list> </table> <br>2.if jugde <br><!--2.測試if--><#if flag==1>result:flag==1</#if><br><br>3.converter lowercase to uppercase<br><!--3. ?代替為. 后面接內建函數,將字符串轉為大寫-->result:${home?upper_case}<br><br>4.map iterator <br><!--4.迭代map中的key/value對--><#list userMap?keys as key>${key}--${userMap[key]!("default value")}<br></#list><body> </html>
三、freemarker顯示結果
總結
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