Listing 2 revises Listing 1 to create a more interactive search utility, allowing the user to enter a search term into a form and view Identi.ca posts matching the search term.
清单2是基于清单1进行修订的，可创建一个具有更强互动性的搜索实用工具，充许用户在表单中输入查询条件，并且查看与查询条件相匹配的Identi . ca帖子。
With the form taken care of, we need a utility class to create and sign policy documents.
为了保护这个表单，我们需要使用一个工具类来创建策略文档并签名。
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