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1 package com.blandware.atleap.webapp.filter;
2
3 import org.apache.commons.logging.Log;
4 import org.apache.commons.logging.LogFactory;
5
6 import javax.servlet.ServletOutputStream  ;
7 import javax.servlet.http.HttpServletResponse ;
8 import javax.servlet.http.HttpServletResponseWrapper ;
9 import java.io.IOException ;
10 import java.io.OutputStreamWriter ;
11 import java.io.PrintWriter ;
12
13
14
22 public class GZIPResponseWrapper extends HttpServletResponseWrapper {
23 protected transient final Log log = LogFactory.getLog(GZIPResponseWrapper.class);
24 protected HttpServletResponse origResponse = null;
25 protected ServletOutputStream stream = null;
26 protected PrintWriter writer = null;
27 protected int error = 0;
28
29 public GZIPResponseWrapper(HttpServletResponse response) {
30 super(response);
31 origResponse = response;
32 }
33
34 public ServletOutputStream createOutputStream() throws IOException {
35 return (new GZIPResponseStream(origResponse));
36 }
37
38 public void finishResponse() {
39 try {
40 if ( writer != null ) {
41 writer.close();
42 } else {
43 if ( stream != null ) {
44 stream.close();
45 }
46 }
47 } catch ( IOException e ) {
48 }
49 }
50
51 public void flushBuffer() throws IOException {
52 if ( stream != null ) {
53 stream.flush();
54 }
55 }
56
57 public ServletOutputStream getOutputStream() throws IOException {
58 if ( writer != null ) {
59 throw new IllegalStateException ("getWriter() has already been called!");
60 }
61
62 if ( stream == null ) {
63 stream = createOutputStream();
64 }
65
66 return (stream);
67 }
68
69 public PrintWriter getWriter() throws IOException {
70 if ( this.origResponse != null && this.origResponse.isCommitted() ) {
73 return super.getWriter();
74 }
75
76 if ( writer != null ) {
77 return (writer);
78 }
79
80 if ( stream != null ) {
81 throw new IllegalStateException ("getOutputStream() has already been called!");
82 }
83
84 stream = createOutputStream();
85 writer =
86 new PrintWriter (new OutputStreamWriter (stream,
87 origResponse.getCharacterEncoding()));
88
89 return (writer);
90 }
91
92 public void setContentLength(int length) {
93 }
94
95
98 public void sendError(int error, String message) throws IOException {
99 super.sendError(error, message);
100 this.error = error;
101
102 if ( log.isDebugEnabled() ) {
103 log.debug("sending error: " + error + " [" + message + "]");
104 }
105 }
106 }
107 |
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