1、通过String来创建模版对象，并执行插值处理
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import freemarker.template.Template; import java.io.OutputStreamWriter; import java.io.StringReader; import java.util.HashMap; import java.util.Map; /** * Freemarker最简单的例子 * * @author leizhimin 11-11-17 上午10:32 */public class Test2 { public static void main(String[] args) throws Exception{ //创建一个模版对象 Template t = new Template(null, new StringReader("用户名：${user};URL： ${url};姓名： ${name}"), null); //创建插值的Map Map map = new HashMap(); map.put("user", "lavasoft"); map.put("url", "http://www.baidu.com/"); map.put("name", "百度"); //执行插值，并输出到指定的输出流中 t.process(map, new OutputStreamWriter(System.out)); } } |
执行后，控制台输出结果：
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用户名：lavasoft;URL： http://www.baidu.com/;姓名： 百度 Process finished with exit code 0 |
2、通过文件来创建模版对象，并执行插值操作
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import freemarker.template.Configuration; import freemarker.template.Template; import java.io.File; import java.io.OutputStreamWriter; import java.util.HashMap; import java.util.Map; /** * Freemarker最简单的例子 * * @author leizhimin 11-11-14 下午2:44 */public class Test { private Configuration cfg; //模版配置对象 public void init() throws Exception { //初始化FreeMarker配置 //创建一个Configuration实例 cfg = new Configuration(); //设置FreeMarker的模版文件夹位置 cfg.setDirectoryForTemplateLoading(new File("G:\\testprojects\\freemarkertest\\src")); } public void process() throws Exception { //构造填充数据的Map Map map = new HashMap(); map.put("user", "lavasoft"); map.put("url", "http://www.baidu.com/"); map.put("name", "百度"); //创建模版对象 Template t = cfg.getTemplate("test.ftl"); //在模版上执行插值操作，并输出到制定的输出流中 t.process(map, new OutputStreamWriter(System.out)); } public static void main(String[] args) throws Exception { Test hf = new Test(); hf.init(); hf.process(); } } |
创建模版文件test.ftl
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<html> <head> <title>Welcome!</title> </head> <body> <h1>Welcome ${user}!</h1> <p>Our latest product: <a href="${url}">${name}</a>! </body> </html> |
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尊敬的用户你好： 用户名：${user}; URL： ${url}; 姓名： ${name} |
执行后，控制台输出结果如下：
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<html> <head> <title>Welcome!</title> </head> <body> <h1>Welcome lavasoft!</h1> <p>Our latest product: <a href="http://www.baidu.com/">百度</a>! </body> </html> |
尊敬的用户你好：
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用户名：lavasoft; URL： http://www.baidu.com/; 姓名： 百度 Process finished with exit code 0 |
3.基于注解的Spring+freemarker实例
web项目图
web.xml文件
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<?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <servlet> <!-- 配置DispatcherServlet --> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 指定spring mvc配置文件位置 不指定使用默认情况 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/springmvc-servlet.xml</param-value> <!--默认:/WEB-INF/<servlet-name>-servlet.xml classpath方式:<param-value>classpath:/spring-xml/*.xml</param-value> --> </init-param> <!-- 设置启动顺序 --> <load-on-startup>1</load-on-startup> </servlet> <!-- 配置映射 servlet-name和DispatcherServlet的servlet一致 --> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern><!-- 拦截以/所有请求 --> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app> |
springmvc-servlet.xml文件
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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 默认注解映射支持 --> <mvc:annotation-driven/> <!-- 自动扫描包 --> <context:component-scan base-package="com.spring.freemarker" /> <!--<context:annotation-config /> 配置自动扫描包配置此配置可省略--> <!--<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" 配置自动扫描包配置此配置可省略/>--> <!-- 配置freeMarker的模板路径 --> <bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"> <property name="templateLoaderPath" value="WEB-INF/ftl/" /> <property name="defaultEncoding" value="UTF-8" /> </bean> <!-- freemarker视图解析器 --> <bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver"> <property name="suffix" value=".ftl" /> <property name="contentType" value="text/html;charset=UTF-8" /> <!-- 此变量值为pageContext.request, 页面使用方法：rc.contextPath --> <property name="requestContextAttribute" value="rc" /> </bean> </beans> |
FreeMarkerController类
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package com.spring.freemarker; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.spring.vo.User; @Controller@RequestMapping("/home") public class FreeMarkerController { @RequestMapping("/index") public ModelAndView Add(HttpServletRequest request, HttpServletResponse response) { User user = new User(); user.setUsername("zhangsan"); user.setPassword("1234"); List<User> users = new ArrayList<User>(); users.add(user); return new ModelAndView("index", "users", users); } } |
User类
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package com.spring.vo; public class User { private String username; private String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } |
index.ftl文件
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <#list users as user> username : ${user.username}<br/> password : ${user.password} </#list> </body> </html> |
部署到tomcat，运行：http://localhost:8080/springmvc/home/index
显示结果：
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username : zhangsanpassword : 1234 |
