UltraSHOP

第一步：

从网站下载beetl.版本号.jar。当前版本是1.1

第二步:

将Jar文件放到classpath里，如果用的是eclipse，点击菜单Project| Properties | Java build path | Libraries,添加beetl.版本号.jar

第三步

编写并运行程序

import org.bee.tl.core.GroupTemplate; import org.bee.tl.core.Template; public class Test { public static void main(String[] args) throws Exception { GroupTemplate group = new GroupTemplate(); //系统默认是<% %> ${ } group.config("<%", "%>", "${", "}"); Template template = group.getStringTemplate("hello,${name}"); template.set("name", "world!"); String output = template.getTextAsString(); System.out.println(output); } }

提高1

编写一个更复杂的例子

在工程目录下创建一个模板文件helloworld.html，放在template目录下,如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Hello</title> </head> <body>  Hello,${name}  </body> </html>

点击此链接打开helloworld.html

java代码如下

import java.io.File; import org.bee.tl.core.GroupTemplate; import org.bee.tl.core.Template; public class Test { public static void main(String[] args) throws Exception { String home = System.getProperty("user.dir") + File.separator + "template" + File.separator; GroupTemplate group = new GroupTemplate(new File(home)); group.setCharset("UTF-8"); group.config("", "${", "}"); Template template = group.getFileTemplate("/helloworld.html"); template.set("allName", new String[]{"javamonkey","lucy"}); String output =template.getTextAsString(); System.out.println(output); } }

提高2

配置GroupTemplate允许运行时刻编译，需要调用group.enableOptimize()

import java.io.File; import org.bee.tl.core.GroupTemplate; import org.bee.tl.core.Template; public class Test { public static void main(String[] args) throws Exception { String home = System.getProperty("user.dir") + File.separator + "template" + File.separator; GroupTemplate group = new GroupTemplate(new File(home)); group.setCharset("UTF-8"); group.enableOptimize(); group.config("", "${", "}"); Template template = group.getFileTemplate("/helloworld.html"); template.set("allName", new String[]{"javamonkey","lucy"}); String output =template.getTextAsString(); //这次是运行的javaclass output =template.getTextAsString(); System.out.println(output); } }

如上代码，第一次运行,将生成java代码以及class文件，默认在用户主目录/.bee目录下

运行时刻生成代码如下：

import java.util.*; import java.util.Map.Entry; import java.math.*; import java.io.*; import org.bee.tl.core.*; import org.bee.tl.core.compile.*; /* /helloworld.html is generated by beetl on 2012-03-02 08:54:52 */ public class helloworld_html extends CompiledClass{ public void service(Writer writer,Context ctx) throws IOException,BeeException{ ctx.set("__group",group); ctx.set("__this",template); BeetlWriter out = new BeetlWriter(writer,this); ctx.set("__pw",out); String[] allName; try{ allName = (String[])ctx.getVar("allName"); }catch(ClassCastException ex){ //转入解释模式执行 throw new PreCompileException(ex); } try{ out.write(__V0); out.write(__VCR); out.write(__V1); out.write(__VCR); out.write(__V2); out.write(__VCR); out.write(__V3); out.write(__VCR); out.write(__V4); out.write(__VCR); out.write(__V5); out.write(__VCR); out.write(__V6); out.write(__VCR); int name_index = 0; int name_size = allName.length; for(String name : allName){ out.write(__V7); out.write(name); out.write(__VCR); name_index++; } out.write(__V8); out.write(__VCR); out.write(__V9); }catch(Exception ex){ throw getException(ex,lineMap); } } /* 原模板中的所有字符串定义到这儿*/ private static char[] __VCR = "\r\n".toCharArray(); private static final char[] __V1 = "".toCharArray(); private static final char[] __V0 = "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">".toCharArray(); private static final char[] __V3 = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">".toCharArray(); private static final char[] __V9 = "".toCharArray(); private static final char[] __V2 = "<head>".toCharArray(); private static final char[] __V8 = "".toCharArray(); private static final char[] __V5 = "</head>".toCharArray(); private static final char[] __V7 = "Hello,".toCharArray(); private static final char[] __V4 = "<title>Hello</title>".toCharArray(); private static final char[] __V6 = "".toCharArray(); /* 原模板Cached标示*/ public long getVersion(){ return 1330684446421l; } /* 行映射*/ protected String lineMap = "-16=0-38=8-37=8-40=9-"; }