输出过滤 Asp.net Response.Filter

来源：互联网发布：四虎影库软件app 编辑：程序博客网时间：2024/04/29 18:32

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO ;using System.Text.RegularExpressions;namespace BasicCompent{ public class PageResponseFilter:Stream { private Stream mSink; private long mPosition; Encoding responseCoding; public PageResponseFilter(Stream sink, Encoding coding) { mSink = sink; responseCoding = coding; } public override bool CanRead { get { return true; } } public override bool CanSeek { get { return false; } } public override bool CanWrite { get { return false; } } public override long Length { get { return 0; } } public override long Position { get { return mPosition; } set { mPosition = value; } } public override long Seek(long offset, SeekOrigin origin) { return 0; } public override void SetLength(long value) { mSink.SetLength(value); } public override void Close() { mSink.Close(); } public override void Flush() { mSink.Flush(); } public override int Read(byte[] buffer, int offset, int count) { return mSink.Read(buffer, offset, count); } public override void Write(byte[] buffer, int offset, int count) { string pubString = responseCoding.GetString(buffer, offset, count); int fIndx = pubString.IndexOf("<body>", 0, StringComparison.OrdinalIgnoreCase); if (fIndx != -1) { pubString = pubString.Insert(fIndx + 6, "<!---------测试用的---------//>"); } byte[] res = responseCoding.GetBytes(pubString); mSink.Write(res, 0, res.Length); } }}