Response的OutputStream和Writer

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public ServletOutputStream getOutputStream() throws IOException {  if (this.servletOutputStream == null) {     this.servletOutputStream = new ServletOutputStreamAdapter(this.exchange.getResponseBody());   }    return this.servletOutputStream;  }  public PrintWriter getWriter() throws IOException {    if (this.writer == null) {      if (this.characterEncoding != null) {        this.writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(this.exchange.getResponseBody(), this.characterEncoding)));       }     else {       this.writer = new PrintWriter(this.exchange.getResponseBody());       }   }    return this.writer;}

?所以用完以后要关闭

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