/**
* Write a file to the response stream. Handles Range requests.
*
* @param servlet called from here
* @param req the request
* @param res the response
* @param file to serve
* @param contentType content type, if null, will try to guess
* @throws IOException on write error
*/
public static void returnFile(
HttpServlet servlet,
HttpServletRequest req,
HttpServletResponse res,
File file,
String contentType)
throws IOException {
// No file, nothing to view
if (file == null) {
log.info(
"returnFile(): "
+ UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_NOT_FOUND, 0));
res.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
// check that it exists
if (!file.exists()) {
log.info(
"returnFile(): "
+ UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_NOT_FOUND, 0));
res.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
// not a directory
if (!file.isFile()) {
log.info(
"returnFile(): "
+ UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_BAD_REQUEST, 0));
res.sendError(HttpServletResponse.SC_BAD_REQUEST);
return;
}
// Set the type of the file
String filename = file.getPath();
if (null == contentType) {
if (filename.endsWith(".html")) contentType = "text/html; charset=iso-8859-1";
else if (filename.endsWith(".xml")) contentType = "text/xml; charset=iso-8859-1";
else if (filename.endsWith(".txt") || (filename.endsWith(".log"))) contentType = CONTENT_TEXT;
else if (filename.indexOf(".log.") > 0) contentType = CONTENT_TEXT;
else if (filename.endsWith(".nc")) contentType = "application/x-netcdf";
else contentType = servlet.getServletContext().getMimeType(filename);
if (contentType == null) contentType = "application/octet-stream";
}
returnFile(req, res, file, contentType);
}
public static void showServletInfo(HttpServlet servlet, PrintStream out) {
out.println("Servlet Info");
out.println(" getServletName(): " + servlet.getServletName());
out.println(" getRootPath(): " + getRootPath());
out.println(" Init Parameters:");
Enumeration params = servlet.getInitParameterNames();
while (params.hasMoreElements()) {
String name = (String) params.nextElement();
out.println(" " + name + ": " + servlet.getInitParameter(name));
}
out.println();
ServletContext context = servlet.getServletContext();
out.println("Context Info");
try {
out.println(" context.getResource('/'): " + context.getResource("/"));
} catch (java.net.MalformedURLException e) {
} // cant happen
out.println(" context.getServerInfo(): " + context.getServerInfo());
out.println(" name: " + getServerInfoName(context.getServerInfo()));
out.println(" version: " + getServerInfoVersion(context.getServerInfo()));
out.println(" context.getInitParameterNames():");
params = context.getInitParameterNames();
while (params.hasMoreElements()) {
String name = (String) params.nextElement();
out.println(" " + name + ": " + context.getInitParameter(name));
}
out.println(" context.getAttributeNames():");
params = context.getAttributeNames();
while (params.hasMoreElements()) {
String name = (String) params.nextElement();
out.println(" context.getAttribute(\"" + name + "\"): " + context.getAttribute(name));
}
out.println();
}
/**
* Show details about the request
*
* @param servlet used to get teh servlet context, may be null
* @param req the request
* @return string showing the details of the request.
*/
public static String showRequestDetail(HttpServlet servlet, HttpServletRequest req) {
StringBuilder sbuff = new StringBuilder();
sbuff.append("Request Info\n");
sbuff.append(" req.getServerName(): ").append(req.getServerName()).append("\n");
sbuff.append(" req.getServerPort(): ").append(req.getServerPort()).append("\n");
sbuff.append(" req.getContextPath:").append(req.getContextPath()).append("\n");
sbuff.append(" req.getServletPath:").append(req.getServletPath()).append("\n");
sbuff.append(" req.getPathInfo:").append(req.getPathInfo()).append("\n");
sbuff.append(" req.getQueryString:").append(req.getQueryString()).append("\n");
sbuff
.append(" getQueryStringDecoded:")
.append(EscapeStrings.urlDecode(req.getQueryString()))
.append("\n");
/*try {
sbuff.append(" getQueryStringDecoded:").append(URLDecoder.decode(req.getQueryString(), "UTF-8")).append("\n");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}*/
sbuff.append(" req.getRequestURI:").append(req.getRequestURI()).append("\n");
sbuff.append(" getRequestBase:").append(getRequestBase(req)).append("\n");
sbuff.append(" getRequestServer:").append(getRequestServer(req)).append("\n");
sbuff.append(" getRequest:").append(getRequest(req)).append("\n");
sbuff.append("\n");
sbuff.append(" req.getPathTranslated:").append(req.getPathTranslated()).append("\n");
String path = req.getPathTranslated();
if ((path != null) && (servlet != null)) {
ServletContext context = servlet.getServletContext();
sbuff.append(" getMimeType:").append(context.getMimeType(path)).append("\n");
}
sbuff.append("\n");
sbuff.append(" req.getScheme:").append(req.getScheme()).append("\n");
sbuff.append(" req.getProtocol:").append(req.getProtocol()).append("\n");
sbuff.append(" req.getMethod:").append(req.getMethod()).append("\n");
sbuff.append("\n");
sbuff.append(" req.getContentType:").append(req.getContentType()).append("\n");
sbuff.append(" req.getContentLength:").append(req.getContentLength()).append("\n");
sbuff.append(" req.getRemoteAddr():").append(req.getRemoteAddr());
try {
sbuff
.append(" getRemoteHost():")
.append(java.net.InetAddress.getByName(req.getRemoteHost()).getHostName())
.append("\n");
} catch (java.net.UnknownHostException e) {
sbuff.append(" getRemoteHost():").append(e.getMessage()).append("\n");
}
sbuff.append(" getRemoteUser():").append(req.getRemoteUser()).append("\n");
sbuff.append("\n");
sbuff.append("Request Parameters:\n");
Enumeration params = req.getParameterNames();
while (params.hasMoreElements()) {
String name = (String) params.nextElement();
String values[] = req.getParameterValues(name);
if (values != null) {
for (int i = 0; i < values.length; i++) {
sbuff
.append(" ")
.append(name)
.append(" (")
.append(i)
.append("): ")
.append(values[i])
.append("\n");
}
}
}
sbuff.append("\n");
sbuff.append("Request Headers:\n");
Enumeration names = req.getHeaderNames();
while (names.hasMoreElements()) {
String name = (String) names.nextElement();
Enumeration values = req.getHeaders(name); // support multiple values
if (values != null) {
while (values.hasMoreElements()) {
String value = (String) values.nextElement();
sbuff.append(" ").append(name).append(": ").append(value).append("\n");
}
}
}
sbuff.append(" ------------------\n");
return sbuff.toString();
}