Servlet中施用freeMarker
第一步：导入freemarker jar包
第二步：在WEB-INF\templates文件夹下编写test.ftl模板
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<html> <head> <title>FreeMarker Example Web Application 1</title> </head> <body> <h1>${message}</h1> </body> </html> |
第三步：编写servlet
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package com.test.freemarker;
import java.util.*; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import freemarker.template.*;
publicclass HelloServlet extends HttpServlet { private Configuration cfg;
publicvoid init() { cfg = new Configuration(); cfg.setServletContextForTemplateLoading(getServletContext(), "WEB-INF/templates"); }
protectedvoid doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { Map root = new HashMap(); root.put("message", "Hello World!");
Template t = cfg.getTemplate("test.ftl");
resp.setContentType("text/html; charset=" + t.getEncoding()); Writer out = resp.getWriter(); try { t.process(root, out); } catch (TemplateException e) { thrownew ServletException("Error while processing FreeMarker template", e); } } } |
第四步：配置web.xml
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<?xml version="1.0" encoding="ISO-8859-1"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:web="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name>freeMarkerServlet</display-name> <servlet> <servlet-name>hello</servlet-name> <servlet-class>com.test.freemarker.HelloServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>hello</servlet-name> <url-pattern>/hello</url-pattern> </servlet-mapping> </web-app> |