FreeMarker简单语法使用

迷南。 2022-05-27 23:13 237阅读 0赞

# 1、模板文件 #

这里使用到了简单的取值、判断null并设置默认值、循环遍历list、日期格式、if else判断、include

<html> <head> <title>${title!"DefaultTitle"}</title> </head> <body> 网页描述：${desc!"是一个测试"} <lable>second的内容：</lable> <#include "second.ftl"> <table border="1"> <tr> <td>下标</td> <td>学号</td> <td>姓名</td> <td>住址</td> </tr> <#list stus as s> <#if s_index % 3 == 0> <tr style="color:blue"> <#elseif s_index % 3 == 1> <tr style="color:yellow"> <#elseif s_index % 3 == 2> <tr style="color:red"> </#if> <td>${s_index}</td> <td>${s.id}</td> <td>${s.name}</td> <td>${s.addr}</td> </tr> </#list> </table> <lable>日期格式</lable> <#if currDate??> <lable>data:</lable>${currDate?date} <lable>time:</lable>${currDate?time} <lable>datatime:</lable>${currDate?datetime} <lable>自定义:</lable>${currDate?string("yyyy年MM月dd日 HH:mm:ss")} <#else> <lable>data为空</lable> </#if> </body> </html>

# 2、Java测试代码 #

import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
 import org.junit.Test;
 
 import freemarker.template.Configuration;
 import freemarker.template.Template;
 import freemarker.template.TemplateException;
 
 public class FreemarkerTest {
 	
 	@Test
 	public void testFreemarker() throws IOException, TemplateException {
 		// 1、添加jar包到工程中國
 		// 2、freemarker不依賴于web容器
 		// 3、创建Configuration对象
 		Configuration configuration = new Configuration(Configuration.getVersion());
 		
 		// 4、设置模板存放位置
 		configuration.setDirectoryForTemplateLoading(new File("D:\\WorkSpace\\FairyShop\\fairyshop-portal\\src\\main\\webapp\\WEB-INF\\ftl"));
 		
 		// 5、设置默认字符集
 		configuration.setDefaultEncoding("utf-8");
 		
 		// 6、获得指定的模板对象
 		Template template = configuration.getTemplate("third.ftl");
 		
 		// 7、创建模板需要的数据集，可以是map，也可以是pojo
 		Map root = new HashMap<>();
 		root.put("title", "world");
 		root.put("stu", new Student(2, "Bob", "西安"));
 		List<Student> stus = new ArrayList<>();
 		stus.add(new Student(1, "Mary01", "China01"));
 		stus.add(new Student(2, "Mary02", "China02"));
 		stus.add(new Student(3, "Mary03", "China03"));
 		stus.add(new Student(4, "Mary04", "China04"));
 		stus.add(new Student(5, "Mary05", "China05"));
 		stus.add(new Student(6, "Mary06", "China06"));
 		root.put("stus", stus);
 		root.put("currDate", new Date());
 		
 		// 8、创建Writer对象，指定html输出路径
 		Writer out = new FileWriter(new File("E:\\Temp\\html\\third.html"));
 		
 		// 9、调用模板对象的process方法，生成静态页面
 		template.process(root, out);
 		
 		// 10、关闭writer对象
 		out.flush();
 		out.close();		
 		
 	}
 	
 	public class Student{
 		private int id;
 		private String name;
 		private String addr;
 		
 		public Student(int id, String name, String addr) {
 			this.id = id;
 			this.name = name;
 			this.addr = addr;
 		}
 		
 		public int getId() {
 			return id;
 		}
 		public void setId(int id) {
 			this.id = id;
 		}
 		public String getName() {
 			return name;
 		}
 		public void setName(String name) {
 			this.name = name;
 		}
 		public String getAddr() {
 			return addr;
 		}
 		public void setAddr(String addr) {
 			this.addr = addr;
 		}
 		
 	}
 
 }