Spring与freemarker集成利用freemarker静态化页面

需求：

web内容系统，需要静态化页面，管理系统仍然基于InternalResourceViewResolver渲染jsp页面，而非采用FreeMarkerViewResolver。也就是说只利用freemarker静态化页面

环境：

<!-- apache common start -->
<dependency>
	<groupId>org.apache.commons</groupId>
	<artifactId>commons-io</artifactId>
	<version>1.3.2</version>
</dependency>
<!-- apache common end -->

<dependency>
	<groupId>org.codehaus.jackson</groupId>
	<artifactId>jackson-mapper-lgpl</artifactId>
	<version>1.9.13</version>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-web</artifactId>
	<version>3.1.0.RELEASE</version>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-webmvc</artifactId>
	<version>3.1.0.RELEASE</version>
</dependency>
<dependency>
	<groupId>javax.servlet</groupId>
	<artifactId>jstl</artifactId>
	<version>1.2</version>
</dependency>
<dependency>
	<groupId>javax.servlet</groupId>
	<artifactId>jsp-api</artifactId>
	<version>2.0</version>
	<scope>provided</scope>
</dependency>
<dependency>
	<groupId>javax.servlet</groupId>
	<artifactId>servlet-api</artifactId>
	<version>2.5</version>
	<scope>provided</scope>
</dependency>
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>fastjson</artifactId>
	<version>1.1.36</version>
</dependency>
<!-- dao start -->
<dependency>
	<groupId>commons-dbutils</groupId>
	<artifactId>commons-dbutils</artifactId>
	<version>1.5</version>
</dependency>
<dependency>
	<groupId>commons-pool</groupId>
	<artifactId>commons-pool</artifactId>
	<version>1.6</version>
</dependency>
<dependency>
	<groupId>commons-dbcp</groupId>
	<artifactId>commons-dbcp</artifactId>
	<version>20030825.184428</version>
</dependency>
<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
	<version>5.1.28</version>
</dependency>
<!-- dao end -->

<!-- FreeMarker start -->
<dependency>
	<groupId>org.freemarker</groupId>
	<artifactId>freemarker</artifactId>
	<version>2.3.20</version>
</dependency>
<dependency>
	<groupId>commons-logging</groupId>
	<artifactId>commons-logging</artifactId>
	<version>1.1.1</version>
</dependency>

web.xml的配置：

<servlet>
	<servlet-name>spring</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<init-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring-*.xml</param-value>
	</init-param>
	<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
	<servlet-name>spring</servlet-name>
	<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>/WEB-INF/spring-*.xml</param-value>
</context-param>
<listener>
	<listener-class>
		org.springframework.web.util.IntrospectorCleanupListener
	</listener-class>
</listener>
<filter>
	<filter-name>encodingFilter</filter-name>
	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
	<init-param>
		<param-name>encoding</param-name>
		<param-value>UTF-8</param-value>
	</init-param>
	<init-param>
		<param-name>forceEncoding</param-name>
		<param-value>true</param-value>
	</init-param>
</filter>
<filter-mapping>
	<filter-name>encodingFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

spring-ui.xml配置：

<mvc:resources mapping="/static/**" location="/static/" />
<mvc:annotation-driven>
	<mvc:message-converters>
		<bean class="org.springframework.http.converter.StringHttpMessageConverter" />
		<bean
			class="org.springframework.http.converter.ResourceHttpMessageConverter" />
		<bean
			class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">

			<property name="supportedMediaTypes" value="application/json" />
		</bean>
	</mvc:message-converters>
</mvc:annotation-driven>
<context:component-scan base-package="com.someabcd.csr" />
<bean id="propertyConfigure"
	class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" />

<!--配置Freemarker -->
<bean id="freemarkerConfigurer"
	class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
	<property name="templateLoaderPath" value="/WEB-INF/ftl/" />
	<property name="freemarkerSettings">
		<props>
			<prop key="template_update_delay">10</prop>
			<prop key="defaultEncoding">UTF-8</prop>
		</props>
	</property>
</bean>

<bean
	class="org.springframework.web.servlet.view.InternalResourceViewResolver"
	p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" />

此时freemarkerConfigurer已经指定，并指定了templateLoaderPath，同时指定了编码

/WEB-INF/ftl/file.ftl：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
<html>  
  <head>  
    <title>${article.title}</title>  
    <meta http-equiv="pragma" content="no-cache">  
    <meta http-equiv="cache-control" content="no-cache">  
    <meta http-equiv="expires" content="0">      
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
    <meta http-equiv="description" content="This is my page">  
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  
  </head>  
    
  <body>  
  <h2>${article.title}</h2>
  <hr/>
  <pre>
  ${article.content}
  </pre>
  </body>
  </html>

我们构建vo类：

public class Article  implements Serializable{
	private static final long serialVersionUID = 554206256994693476L;
	private String title;
	private String content;

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}
}

构建实际生成html的操作类：HtmlService.java 为测试类

@Service("com.someabcd.csr.service.htmlService")
public class HtmlService {
	@Autowired
	private FreeMarkerConfigurer freeMarkerConfigurer;

	public void all(String msg) throws Exception {
		Map<String, Article> rootMap = new HashMap<String, Article>();
		process("file.ftl", rootMap);
	}

	public void process(String templateName, Map<String, Article> rootMap)
			throws Exception {
		Configuration configuration = freeMarkerConfigurer.getConfiguration();
		Template template = configuration.getTemplate(templateName);
		File file = new File("d:/file.html");
		Article article = new Article();
		article.setTitle("关于小网客");
		article.setContent("解决方案咨询<br>大数据处理<br>系统架构<br>企业信息化咨询<br>Email:[e-mail]<br>来自北京");
		rootMap.put("article", article);
		Writer out = new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
		template.process(rootMap, out);
		IOUtils.closeQuietly(out);

	}

}

构建控制层的访问：HtmlController.java

@Controller("com.someabcd.csr.controller.htmlController")
@RequestMapping("html")
public class HtmlController {
	@Autowired
	private HtmlService htmlService;

	@RequestMapping(value = "/create")
	@ResponseBody
	public ReturnBase all(HttpServletRequest request,
			HttpServletResponse response) {
		ReturnBase returnStatus = new ReturnBase();
		String msg = request.getParameter("msg");
		System.out.println("*********msg***" + msg);
		try {
			this.htmlService.all(msg);
			returnStatus.setSuccess(true);
			returnStatus.setMsg("成功!");
		} catch (Exception e) {
			e.printStackTrace();
			returnStatus.setSuccess(false);
			returnStatus.setMsg(e.getMessage());
		}
		return returnStatus;

	}
}

这个时候我们访问html/create即可生成。

其他类：ReturnBase

public class ReturnBase {
	private boolean success = false;
	private String msg;

	public boolean isSuccess() {
		return success;
	}

	public void setSuccess(boolean success) {
		this.success = success;
	}

	public String getMsg() {
		return msg;
	}

	public void setMsg(String msg) {
		this.msg = msg;
	}
 
}

最终直接通过url即可访问生成页面的，结果保存为d:/file.html，实际应用中根据数据id等规则生成相应的文件目录结构即可