1、通过String来创建模版对象,并执行插值处理
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:
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
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
<html> <head> <title>Welcome!</title> </head> <body> <h1>Welcome ${user}!</h1> <p>Our latest product: <a href=\"${url}\">${name}</a>! </body> </html>
尊敬的用户你好: 用户名:${user}; URL: ${url}; 姓名: ${name}
执行后,控制台输出结果如下:
<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:
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
<?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
<?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
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
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
<!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:
username : zhangsan password : 1234
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