加入maven依賴

1. <dependency>
2. <groupId>org.beetl</groupId>
3. <artifactId>beetl-core</artifactId>
4. <version>2.2.3</version>
5. </dependency>

模板文件 src/main/resources/template/hello.btl 的內容為：

hello ${name}

例子代碼如下：

1. package com.lala.template;
3. import org.beetl.core.Configuration;
4. import org.beetl.core.GroupTemplate;
5. import org.beetl.core.Template;
6. import org.beetl.core.resource.ClasspathResourceLoader;
7. import org.beetl.core.resource.FileResourceLoader;
8. import org.beetl.core.resource.StringTemplateResourceLoader;
10. public class Beetl
11. {
12. /**
13. * 加載classpath下的資源
14. * @throws Exception
15. */
16. static void classpathRL()throws Exception
17. {
18. ClasspathResourceLoader resourceLoader = new ClasspathResourceLoader();
19. Configuration cfg = Configuration.defaultConfiguration();
20. GroupTemplate gt = new GroupTemplate(resourceLoader, cfg);
21. Template t = gt.getTemplate("/template/hello.btl");
22. t.binding("name", "beetl");
23. String str = t.render();
24. System.out.println(str);
25. }
27. /**
28. * 加載文件系統下的資源
29. * @throws Exception
30. */
31. static void filePathRL()throws Exception
32. {
33. String root = "E:\\pp\\src\\camel-web\\src\\main\\resources\\template";
34. FileResourceLoader resourceLoader = new FileResourceLoader(root,"utf-8");
35. Configuration cfg = Configuration.defaultConfiguration();
36. GroupTemplate gt = new GroupTemplate(resourceLoader, cfg);
37. Template t = gt.getTemplate("hello.btl");
38. t.binding("name", "beetl");
39. String str = t.render();
40. System.out.println(str);
41. }
43. /**
44. * 直接構建字符串
45. * @throws Exception
46. */
47. static void stringBeetl()throws Exception
48. {
49. StringTemplateResourceLoader resourceLoader = new StringTemplateResourceLoader();
50. Configuration cfg = Configuration.defaultConfiguration();
51. GroupTemplate gt = new GroupTemplate(resourceLoader, cfg);
52. Template t = gt.getTemplate("hello,${name} \r\n你好：${name}");
53. t.binding("name", "beetl");
54. String str = t.render();
55. System.out.println(str);
56. }
57. }

servlet例子如下：

1. package com.lala.template;
3. import java.io.IOException;
5. import javax.servlet.ServletException;
6. import javax.servlet.annotation.WebServlet;
7. import javax.servlet.http.HttpServlet;
8. import javax.servlet.http.HttpServletRequest;
9. import javax.servlet.http.HttpServletResponse;
11. import org.beetl.core.Configuration;
12. import org.beetl.core.GroupTemplate;
13. import org.beetl.core.Template;
14. import org.beetl.core.resource.WebAppResourceLoader;
16. @WebServlet("/beetl")
17. public class BeetlServlet extends HttpServlet
18. {
19. private static final long serialVersionUID = 1L;
21. protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
22. {
23. resp.setCharacterEncoding("UTF-8");
24. resp.setContentType("text/html;charset=UTF-8");
25. WebAppResourceLoader resourceLoader = new WebAppResourceLoader(this.getServletContext().getRealPath("/"), "UTF-8");
26. Configuration cfg = Configuration.defaultConfiguration();
27. GroupTemplate gt = new GroupTemplate(resourceLoader, cfg);
28. Template t = gt.getTemplate("/template/webhello.btl");
29. t.binding("name", "beetl");
30. t.renderTo(resp.getWriter());
31. }
32. }

beetl模板入門例子