web-harvest基础学习1

web-harvest基础学习一
  Web-harvest里面的<script>标签，其自带的例子：

 

<var-def name="birthday">2/10/2008</var-def>    <var-def name="web_harvest_day_variable">     <script return="nameDay.toUpperCase()"><![CDATA[         tokenizer = new StringTokenizer(birthday.toString(),"./-\");                  day = Integer.parseInt(tokenizer.nextToken());         month = Integer.parseInt(tokenizer.nextToken());         year = Integer.parseInt(tokenizer.nextToken());                  Calendar cal = Calendar.getInstance();         cal.set(Calendar.DAY_OF_MONTH,day);         cal.set(Calendar.MONTH,month);         cal.set(Calendar.YEAR,year);                  switch(cal.get(Calendar.DAY_OF_WEEK))         {            case 0 : nameDay = birthday+" Sunday"; break;            case 1 : nameDay = birthday+" Monday"; break;            case 2 : nameDay = birthday+" Tuesday"; break;            case 3 : nameDay = birthday+" Wendsday"; break;            case 4 : nameDay = birthday+" Thursday"; break;            case 5 : nameDay = birthday+" Friday"; break;            default: nameDay = birthday+" Saturday"; break;         }     ]]></script>  </var-def>    <file action="write" path="day.txt">     <template>The day when you were born was ${nameDay}.</template>     <var name="web_harvest_day_variable"/>  </file>

  例子在<script>标签里面用了一种叫[url＝

http://www.beanshell.org/home.html]beanshell[/url]的轻量级JAVA脚本语言，

在该脚本里面可以调用JAVA的各种基本的函数，使用起来比较灵活，但是有一点要注意的

是，在其里面不能直接调用平时JAVA里面的各种函数，而是要先进行类型的转换后才能进行

调用，比如上面和下面的例子中就是先进行转换再调用的：

 

 <var-def name="hello">Hello to the world!</var-def>    <!-- 在script里面可以用外面定义的变量，但不能直接就拿来用，而是要先进行转化，比如说String要用到toString()       其它转换函数还有:                        byte[] toBinary()                        boolean toBoolean()                        int toInt()                        long toLong()                        double toDouble()                        Object[] toArray()                        java.util.List toList()                        Object getWrappedObject()   -->    <var-def name="test_str">     <script return="temp.toUpperCase()"><![CDATA[                       temp = hello.toString();       ]]></script>  </var-def>    <file action="write" path="script_1.txt">     <var name="test_str"/>  </file>

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