过滤器中实用HttpServletResponseWrapper封装

最新推荐文章于 2021-03-22 23:10:04 发布

原创最新推荐文章于 2021-03-22 23:10:04 发布 · 694 阅读

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本文介绍了一个自定义的HTTPServletResponseWrapper子类——Response。该类通过使用CharArrayWriter来捕获响应的内容，并提供getStr()方法获取响应字符串。此外，还提供了判断是否使用字符写入的方法。

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public class Response extends HttpServletResponseWrapper {

       private CharArrayWriter charWriter;

       private boolean usingWriter = false;

       private HttpServletResponse response;

       private HttpServletRequest request;

       public Response(HttpServletResponse resp, HttpServletRequest req) {
           super(resp);

           request = req;
           response = resp;
           charWriter = new CharArrayWriter();
       }

       /**
       * 得到内容
       *
       * @return String
       */

       public String getStr() {
           return charWriter.toString();
       }

       /**
       *
       * @return PrintWriter
       */
       public PrintWriter getWriter() {
           this.usingWriter = true;
           return new PrintWriter(charWriter);
       }

       /**
       *
       * @return boolean
       */
       public boolean isUsingWriter() {
           return this.usingWriter;
       }
}