java - Best way to make StringTemplate limit the length of a string? -

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This is the easiest to use an example example. In some scenarios, we have list items that contain a lot of text, but showing more than the first few words is not useful, so we deal with it in JSP: 

  & lt; For% (item items: items) {%> & Lt; Li & gt; & Lt;% = StringHelper.shorten (item.getValue (), 30))% & gt; & Lt; / A & gt; & Lt; / Li & gt; & Lt;%}% & gt;   
 The filter contains some arguments that it avoids cutting words, and is also included to describe "..." as trivial and so on. I.e.:  
  & lt; Li & gt; Some text & lt; / Li & gt; & Lt; Li & gt; Some other text that is longer ... & lt; / Li & gt;   
 Is there a clear way to do this with the formatter? I know that I can do something like that, but it seems a little hesitation because we are different in different places - Use different numbers:  
  $ items: {i | & Lt; Li & gt; $ I.value; Format = "max 30" $ & lt; / Li & gt;} $    
 
 
 The simplest way is to customize a tag, such as  
  Public category ShortenTag Tagsport {extended fixed final integer MAX_LENGTH = 30; Public Inc doStartTag () {// Small string here}}

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