freemarker+struts2+spring整合实例教程。在struts2与freemarker整合时,可以在项目的类路径下放置freemarker.properties配置文件,struts2会自动读取(struts2封装了)。今天用freemarker作为模板生成静态文件时,发现并不读取freemarker.properties配置文件。
看一下freemarker源码,freemarker本身并不加载freemarker.properties配置文件,需要代码中指定配置文件。
代码如下:
- package com.ldl.freemarker;
- import java.io.BufferedWriter;
- import java.io.IOException;
- import java.io.OutputStreamWriter;
- import java.io.Writer;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.Properties;
- import freemarker.cache.ClassTemplateLoader;
- import freemarker.template.Configuration;
- import freemarker.template.DefaultObjectWrapper;
- import freemarker.template.Template;
- import freemarker.template.TemplateException;
- public class freemarkerTest {
- /**
- * @param args
- * @throws IOException
- * @throws TemplateException
- */
- @SuppressWarnings(“unchecked”)
- public static void main(String[] args) throws IOException, TemplateException {
- Configuration cfg = new Configuration();
- cfg.setTemplateLoader(new ClassTemplateLoader(freemarkerTest.class,”"));
- cfg.setObjectWrapper(new DefaultObjectWrapper());
- //加载并设置freemarker.properties
- Properties p = new Properties();
- p.load(Thread.currentThread().getContextClassLoader().getResourceAsStream(“freemarker.properties”));
- cfg.setSettings(p);
- /* 在整个应用的生命周期中,这个工作你可以执行多次 */
- /* 获取或创建模板*/
- Template temp = cfg.getTemplate(“test.xml”);
- /* 创建数据模型 */
- Map root = new HashMap();
- root.put(“user”, ”Big Joe”);
- /* 将模板和数据模型合并 */
- Writer out = new BufferedWriter(new OutputStreamWriter(System.out));
- temp.process(root, out);
- out.flush();
- }
- }
freemaker.properties:
- template_update_delay=5
- datetime_format=yyyy-MM-dd HH:mm:ss
- date_format=yyyy-MM-dd
- time_format=HH:mm:ss
- number_format=0.######;
- boolean_format=true,false
- auto_import=”/WEB-INF/ftl_lib/ponyjava.com/index.ftl” as p, ”/WEB-INF/ftl_lib/whatycms/index.ftl” as cms
- whitespace_stripping=true
- #default_encoding=GBK
- tag_syntax=auto_detect
- url_escaping_charset=UTF-8
- #struts.freemarker.templatesCache=true
- #template_update_delay=60000
在web.xml中添加如下配置:
<!-- 加载Spring容器配置 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 设置Spring容器加载配置文件路径 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext-*.xml</param-value>
</context-param>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/dispatcher.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
上面分别是添加Spring的监听器、以及配置Spring的配置文件、还有SpringMVC的控制器;
3、 在WEB-INF中添加文件dispatcher.xml,和web.xml中的对应。内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans >
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd"
<context:component-scan base-package="com.hoo" />
<!-- annotation的方法映射适配器
<bean id="handlerAdapter"/>
-->
<!-- annotation默认的方法映射适配器 -->
<bean id="handlerMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
</bean>
</beans>
上面是SpringMVC的基本配置
4、 在src中添加applicationContext-beans.xml,内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans >
http://www.springframework.org/schema/beans/spring-beans-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/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd"
</beans>
里面可以添加一些bean的配置
5、 在src目录添加freemarker.properties配置文件,这个文件是freemarker一些常用的转换,内容如下:
tag_syntax=auto_detect
template_update_delay=2
default_encoding=UTF-8
output_encoding=UTF-8
locale=zh_CN
date_format=yyyy-MM-dd
time_format=HH:mm:ss
datetime_format=yyyy-MM-dd HH:mm:ss
6、 在dispatcher.xml中添加freemarker的配置,配置如下:
<!-- 设置freeMarker的配置文件路径 -->
<bean id="freemarkerConfiguration" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="location" value="classpath:freemarker.properties"/>
</bean>
<!-- 配置freeMarker的模板路径 -->
<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
<!--property name="freemarkerSettings" ref="freemarkerConfiguration"/-->
<property name="templateLoaderPath">
<value>/WEB-INF/ftl/</value>
</property>
<property name="freemarkerVariables">
<map>
<entry key="xml_escape" value-ref="fmXmlEscape" />
</map>
</property>
</bean>
<bean id="fmXmlEscape" class="freemarker.template.utility.XmlEscape"/>
<!-- 配置freeMarker视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView"/>
<property name="viewNames" value="*.ftl"/>
<property name="contentType" value="text/html; charset=utf-8"/>
<property name="cache" value="true" />
<property name="prefix" value="" />
<property name="suffix" value="" />
<property name="order" value="2"/>
</bean>
上面最关键的就是freeMarker的视图解析器viewResolver的配置,viewClass是使用哪个视图解析器,这里是类路径;其他的和jsp的视图解析器都很类似。
7、 下面在WEB-INF中添加2个ftl模板,在WEB-INF添加ftl,然后添加hello.ftl/hi.ftl,内容分别是:
hello.ftl
<html>
<body>
<h1>say hello ${name}</h1><br/>
${(1 == 1)?string("yes", "no")}
</body>
</html>
hi.ftl
<html>
<body>
<h1>say hello ${name}</h1><br/>
${(1 != 1)?string("yes", "no")}
</body>
</html>
8、 添加Controller控制器,代码如下:
package com.hoo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* <b>function:</b> FreeMarker示例控制器
* @author hoojo
* @createDate 2011-3-3 下午04:50:10
* @file HelloWorldController.java
* @package com.hoo.controller
* @project SpringFreemarker
* @version 1.0
*/
@Controller
@RequestMapping("/freeMarker")
public class HelloWorldController {
@RequestMapping("/hello")
public String sayHello(ModelMap map) {
System.out.println("say Hello ……");
map.addAttribute("name", " World!");
return "/hello.ftl";
}
@RequestMapping("/hi")
public String sayHi(ModelMap map) {
System.out.println("say hi ……");
map.put("name", "jojo");
return "/hi.ftl";
}
@RequestMapping("/jsp")
public String jspRequest(ModelMap map) {
System.out.println("jspRequest ……");
map.put("name", "jsp");
return "/temp.jsp";
}
}
9、 添加index.jsp的测试链接或temp.jsp的内容:
index.jsp
<body>
<a href="freeMarker/hello.do">say hello</a><br/>
<a href="freeMarker/hi.do">say hi</a><br/>
<a href="freeMarker/jsp.do">jspRequest</a>
</body>
temp.jsp
<body>
<h3>${name }</h3>
</body>
如果运行无错误,并输出正确的结果就整合成功!~.~
作者:hoojo
出处:
http://www.cnblogs.com/hoojo/archive/2011/04/19/2020551.html
blog:http://blog.csdn.net/IBM_hoojo
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。