【Freemarker】之 初识（demo）

1。简单demo
2。简单生成html
3。Freemarker模块注入

预备：

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凡凡使用maven创建项目，使用freemarker，直接在pom.xml中直接添加依赖，再刷新即可。

依赖来源：http://freemarker.org/freemarkerdownload.html

<dependency>  <groupId>org.freemarker</groupId>  <artifactId>freemarker-gae</artifactId>  <version>2.3.26-incubating</version></dependency>

简单Demo：

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demo①

demo②

简单生成html：

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index.jsp

LoginServlet.java

@WebServlet(name = "LoginServlet")public class LoginServlet extends HttpServlet {    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        this.doGet(request, response);    }    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        String username = request.getParameter("username");        String userpawd = request.getParameter("userpawd");        Configuration cfg = new Configuration(Configuration.VERSION_2_3_26);        cfg.setServletContextForTemplateLoading(getServletContext(), "/template");;        Map<String, String> rootMap = new HashMap<String, String>();        rootMap.put("username", username);        rootMap.put("userpawd", userpawd);        try {            Template template = cfg.getTemplate("index.ftl");            response.setContentType("text/html; charset=utf-8 ");            Writer out = response.getWriter();            template.process(rootMap, out);        }catch(IOException e) {            e.printStackTrace();        }catch(TemplateException t) {            t.printStackTrace();        }    }}

web.xml

pom.xml

index.ftl

演示图：