Velocity字符串模板替换

 publicclassVelocityTest{

 privatestaticPropertiesprops=newProperties();

 static{
 props.setProperty(Velocity.INPUT_ENCODING,"UTF-8");
 props.setProperty(Velocity.RESOURCE_LOADER,"class");
 props.setProperty("class.resource.loader.class",
 "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
 }

 publicstaticvoidmain(String[]args){
 testStringVelocity();
 testCommonsStringUtils();
 }

 /**
 *测试字符串模板替换
 */
 privatestaticvoidtestStringVelocity(){
 //初始化并取得Velocity引擎
 VelocityEngineengine=newVelocityEngine(props);
 //字符串模版
 Stringtemplate="${owner}：您的${type}:${bill}在${date}日已支付成功";
 //取得velocity的上下文context
 VelocityContextcontext=newVelocityContext();
 //把数据填入上下文
 context.put("owner","nassir");
 context.put("bill","201203221000029763");
 context.put("type","订单");
 context.put("date",
 newSimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(newDate()));
 StringWriterwriter=newStringWriter();
 engine.evaluate(context,writer,"",template);
 System.out.println(writer.toString());

 }

 /**
 *测试模板静态方法使用
 */
 privatestaticvoidtestCommonsStringUtils(){
 VelocityEngineengine=newVelocityEngine();
 engine.init();
 VelocityContextctx=newVelocityContext();
 ctx.put("stringUtils",newStringUtils());
 ctx.put("comments","thisisa\nnewlinetest");
 ctx.put("newline","\n");
 ctx.put("break","");
 Stringtemplate="#set($comments=$stringUtils.replace($comments,$newline,$break))";
 template+="$comments";
 StringWriterwriter=newStringWriter();
 engine.evaluate(ctx,writer,"",template);
 System.out.println(writer.toString());
 //assertEquals("thisisanewlinetest",writer.toString());
 }
 }

运行结果:

nassir：您的订单 : 201203221000029763 在 2012-03-26 18:13:01 日已支付成功

this is a

newline test