freemarker中的substring取子串

freemarker中的substring取子串

1、substring取子串介紹

（1）運算式?substring(from,to)

（2）當to為空白時，預設的是字串的長度

（3）from是第一個字元的開始索引，to最後一個字元之後的位置索引

2、舉例說明

     <#--freemarker中的substring取子串-->          ${'EFGHIJKL'?substring(0)}     ${'EFGHIJKL'?substring(1)}     ${'EFGHIJKL'?substring(2)}     ${'EFGHIJKL'?substring(3)}     ${'EFGHIJKL'?substring(4)}     ${'EFGHIJKL'?substring(5)}     ${'EFGHIJKL'?substring(6)}     ${'EFGHIJKL'?substring(7)}     ${'EFGHIJKL'?substring(8)}          ${'EFGHIJKL'?substring(0,1)}     ${'EFGHIJKL'?substring(0,2)}     ${'EFGHIJKL'?substring(0,3)}     ${'EFGHIJKL'?substring(0,4)}     ${'EFGHIJKL'?substring(0,5)}     ${'EFGHIJKL'?substring(0,6)}     ${'EFGHIJKL'?substring(0,7)}     ${'EFGHIJKL'?substring(0,8)}

3、樣本結果

     EFGHIJKL     FGHIJKL     GHIJKL     HIJKL     IJKL     JKL     KL     L               E     EF     EFG     EFGH     EFGHI     EFGHIJ     EFGHIJK     EFGHIJKL