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));
}
}
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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
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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();
}
}
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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}
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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 >
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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
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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 >
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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 >
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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);
}
}
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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;
}
}
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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 >
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部署到tomcat,运行:http://localhost:8080/springmvc/home/index
显示结果:
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username : zhangsan
password : 1234
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