package No04_条件判断; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStreamWriter; import java.io.Writer; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import freemarker.template.Configuration; import freemarker.template.Template; import freemarker.template.TemplateExceptionHandler; public class Test { public static void main(String[] args) throws Exception { // 设置模板的home目录，默认从此目录获取模板（此设置只需在应用中设置一次） Configuration cfg = new Configuration(Configuration.VERSION_2_3_22); cfg.setDirectoryForTemplateLoading(new File("D:/freemarker_template_home/")); cfg.setDefaultEncoding("UTF-8"); cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER); // 获取模板 Template temp = cfg.getTemplate("No04_条件判断.ftl"); // 创建、设置数据模型 Map<String, Object> dataMap = new HashMap<String, Object>(); List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); dataMap.put("userList", list); Map<String, Object> userMap = new HashMap<String, Object>(); userMap.put("username", "Nick Huang"); userMap.put("age", 20); userMap.put("nickname", null); list.add(userMap); userMap = new HashMap<String, Object>(); userMap.put("username", "Viki Yang"); userMap.put("age", 19); userMap.put("nickname", "Viki"); list.add(userMap); userMap = new HashMap<String, Object>(); userMap.put("username", "Teng Yang"); userMap.put("age", 18); userMap.put("nickname", "Teng"); list.add(userMap); // 将模板和数据模型合并 String filename = temp.getName(); filename = filename.substring(0, filename.lastIndexOf(".") + 1) + "html"; FileOutputStream fos = new FileOutputStream(new File("D:/freemarker_output_home/" + filename)); Writer out = new OutputStreamWriter(fos); temp.process(dataMap, out); out.flush(); } }
No04_条件判断.ftl
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>User list</title> </head> <body> <table> <thead> <tr> <th>user name</th> <th>age</th> <th>nick name</th> </tr> </thead> <tbody> <#list userList as being> <tr> <th> <#if being.username == 'Nick Huang'> Junior Programmer (${being.username}) <#else> ${being.username} </#if> </th> <th> <#if 19 < being.age > Old <#else> Young </#if> </th> <th> <#-- 如果为空，取默认值 --> <#if being.nickname??> ${being.nickname} <#else> no value </#if> <#-- 以下为简单写法 --> <#-- ${being.nickname ! 'no value'} --> </th> </tr> </#list> </tbody> </table> </body> </html>