Velocity帮我们实现页面静态化
Velocity帮我们实现页面静态化
$name
#set( $condition = true )
数组赋值：
#set( $ints = [1..10])
#foreach( $entry in $ints)
??? $entry
#end
#set( $ints = ["第一个","第二个"])
#foreach( $entry in $ints)
??? $entry
#end
七：#if#else#end
try{
?? Velocity.init("src/velocity.properties");
?? VelocityContext context = new VelocityContext();
? context.put("condition", true);
?? Template template = Velocity.getTemplate("mytemplate.vm");
?? StringWriter sw = new StringWriter();
?? template.merge(context, sw);
?? sw.flush();
?? System.out.println(sw.toString());
}catch( Exception e ){
??? e.printStackTrace();
}
mytemplate.vm内容如下：
#if($condition)
?? 成立
#else
?? 不成立
#end
八：格式化日期
格式化日期必须将velocity-tools-generic-1.4.jar包加入到类路径。
try{
?? Velocity.init("src/velocity.properties");
?? VelocityContext context = new VelocityContext();
?? context.put("now", new Date());
?? context.put("dateformat", new DateTool());
?? Template template = Velocity.getTemplate("mytemplate.vm");
?? StringWriter sw = new StringWriter();
?? template.merge(context, sw);
?? sw.flush();
?? System.out.println(sw.toString());
}catch( Exception e ){
??? e.printStackTrace();
}
mytemplate.vm内容如下：
$dateformat.format("yyyy-MM-dd", $now)
九：输出到文件
try{
??? Velocity.init("src/velocity.properties");
??? VelocityContext context = new VelocityContext();
??? context.put("title", "巴巴运行网");
??? context.put("body", "这是内容");
??? Template template = Velocity.getTemplate("mytemplate.vm");
??? File savefile = new File("E:\\spring\\velocity\\WebRoot\\page\\test.html");
??? if(!savefile.getParentFile().exists()) savefile.getParentFile().mkdirs();
??? FileOutputStream outstream = new FileOutputStream(savefile);
??? OutputStreamWriter writer = new OutputStreamWriter(outstream,"UTF-8");
??? BufferedWriter bufferWriter = new BufferedWriter(writer);
??? template.merge(context, bufferWriter);
??? bufferWriter.flush();
??? outstream.close();
??? bufferWriter.close();
}catch( Exception e ){
??? e.printStackTrace();
}
十：null处理
try{
??? Velocity.init("src/velocity.properties");
??? VelocityContext context = new VelocityContext();
??? context.put("title", null);
??? Template template = Velocity.getTemplate("mytemplate.vm");
??? StringWriter writer = new StringWriter();
??? BufferedWriter bufferWriter = new BufferedWriter(writer);
??? template.merge(context, bufferWriter);
??? bufferWriter.flush();
??? System.out.println(writer.toString());
}catch( Exception e ){
??? e.printStackTrace();
}
mytemplate.vm内容如下：
$title