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>