1、通过String来创建模版对象,并执行插值处理
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
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:
1
2
3
4
5
6
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
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
1
2
3
4
5
6
7
8
9
10
|
< html > < head > < title >Welcome!</ title > </ head > < body > < h1 >Welcome ${user}!</ h1 > < p >Our latest product: < a href = "${url}" >${name}</ a >! </ body > </ html > |
1
2
3
4
|
尊敬的用户你好: 用户名:${user}; URL: ${url}; 姓名: ${name} |
执行后,控制台输出结果如下:
1
2
3
4
5
6
7
8
9
10
|
< 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:
1
2
3
4
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
<? 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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
<? 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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
|
<!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:
1
2
|
username : zhangsan password : 1234 |