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:smallnetvisitor@qq.com<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

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