DefaultServlet (Apache Tomcat 7.0.67 API Documentation)

java.lang.Object
- javax.servlet.GenericServlet
- - javax.servlet.http.HttpServlet
  - - org.apache.catalina.servlets.DefaultServlet

All Implemented Interfaces:

java.io.Serializable, Servlet, ServletConfig

Direct Known Subclasses:

WebdavServlet
```
public class DefaultServlet
extends HttpServlet
```
The default resource-serving servlet for most web applications, used to serve static resources such as HTML pages and images.

This servlet is intended to be mapped to / e.g.:
```
   <servlet-mapping>
       <servlet-name>default</servlet-name>
       <url-pattern>/</url-pattern>
   </servlet-mapping>
 
```
It can be mapped to sub-paths, however in all cases resources are served from the web appplication resource root using the full path from the root of the web application context.
e.g. given a web application structure:
```
 /context
   /images
     tomcat2.jpg
   /static
     /images
       tomcat.jpg
 
```
... and a servlet mapping that maps only /static/* to the default servlet:
```
   <servlet-mapping>
       <servlet-name>default</servlet-name>
       <url-pattern>/static/*</url-pattern>
   </servlet-mapping>
 
```
Then a request to /context/static/images/tomcat.jpg will succeed while a request to /context/images/tomcat2.jpg will fail.
Author:

Craig R. McClanahan, Remy Maucherat

See Also:
Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected static class DefaultServlet.Range

Nested Classes
Modifier and Type	Class and Description
`protected static class`	`DefaultServlet.Range`

Field Summary

Fields
Modifier and Type	Field and Description
`protected static int`	`BUFFER_SIZE` Size of file transfer buffer in bytes.
`protected java.lang.String`	`contextXsltFile` Allow customized directory listing per context.
`protected int`	`debug` The debugging detail level for this servlet.
`protected java.lang.String`	`fileEncoding` File encoding to be used when reading static files.
`protected static java.util.ArrayList<DefaultServlet.Range>`	`FULL` Full range marker.
`protected java.lang.String`	`globalXsltFile` Allow customized directory listing per instance.
`protected int`	`input` The input buffer size to use when serving resources.
`protected boolean`	`listings` Should we generate directory listings?
`protected java.lang.String`	`localXsltFile` Allow customized directory listing per directory.
`protected static java.lang.String`	`mimeSeparation` MIME multipart separation string
`protected int`	`output` The output buffer size to use when serving resources.
`protected java.lang.String`	`readmeFile` Allow a readme file to be included.
`protected boolean`	`readOnly` Read only flag.
`protected ProxyDirContext`	`resources` Proxy directory context.
`protected static java.lang.String`	`RESOURCES_JNDI_NAME` JNDI resources name.
`protected int`	`sendfileSize` Minimum size for sendfile usage in bytes.
`protected boolean`	`showServerInfo` Flag to determine if server information is presented.
`protected static StringManager`	`sm` The string manager for this package.
`protected static URLEncoder`	`urlEncoder` Array containing the safe characters set.
`protected boolean`	`useAcceptRanges` Should the Accept-Ranges: bytes header be send with static resources?

Constructor Summary

Constructors
Constructor and Description

DefaultServlet()

Constructors
Constructor and Description
`DefaultServlet()`

Method Summary

Methods
Modifier and Type	Method and Description
`protected boolean`	`checkIfHeaders(HttpServletRequest request, HttpServletResponse response, ResourceAttributes resourceAttributes)` Check if the conditions specified in the optional If headers are satisfied.
`protected boolean`	`checkIfMatch(HttpServletRequest request, HttpServletResponse response, ResourceAttributes resourceAttributes)` Check if the if-match condition is satisfied.
`protected boolean`	`checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response, ResourceAttributes resourceAttributes)` Check if the if-modified-since condition is satisfied.
`protected boolean`	`checkIfNoneMatch(HttpServletRequest request, HttpServletResponse response, ResourceAttributes resourceAttributes)` Check if the if-none-match condition is satisfied.
`protected boolean`	`checkIfUnmodifiedSince(HttpServletRequest request, HttpServletResponse response, ResourceAttributes resourceAttributes)` Check if the if-unmodified-since condition is satisfied.
`protected boolean`	`checkSendfile(HttpServletRequest request, HttpServletResponse response, CacheEntry entry, long length, DefaultServlet.Range range)` Check if sendfile can be used.
`protected void`	`copy(CacheEntry cacheEntry, java.io.InputStream is, java.io.PrintWriter writer)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`protected void`	`copy(CacheEntry cacheEntry, java.io.InputStream is, ServletOutputStream ostream)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`protected void`	`copy(CacheEntry cacheEntry, ServletOutputStream ostream, DefaultServlet.Range range)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`protected void`	`copy(CacheEntry cacheEntry, ServletOutputStream ostream, java.util.Iterator<DefaultServlet.Range> ranges, java.lang.String contentType)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`protected java.io.IOException`	`copyRange(java.io.InputStream istream, ServletOutputStream ostream)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`protected java.io.IOException`	`copyRange(java.io.InputStream istream, ServletOutputStream ostream, long start, long end)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`protected java.io.IOException`	`copyRange(java.io.Reader reader, java.io.PrintWriter writer)` Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
`void`	`destroy()` Finalize this servlet.
`protected void`	`displaySize(java.lang.StringBuilder buf, int filesize)` Deprecated. Will be removed in Tomcat 8.0.x. Replaced by `renderSize(long)`
`protected void`	`doDelete(HttpServletRequest req, HttpServletResponse resp)` Process a DELETE request for the specified resource.
`protected void`	`doGet(HttpServletRequest request, HttpServletResponse response)` Process a GET request for the specified resource.
`protected void`	`doHead(HttpServletRequest request, HttpServletResponse response)` Process a HEAD request for the specified resource.
`protected void`	`doOptions(HttpServletRequest req, HttpServletResponse resp)` Override default implementation to ensure that TRACE is correctly handled.
`protected void`	`doPost(HttpServletRequest request, HttpServletResponse response)` Process a POST request for the specified resource.
`protected void`	`doPut(HttpServletRequest req, HttpServletResponse resp)` Process a PUT request for the specified resource.
`protected java.io.File`	`executePartialPut(HttpServletRequest req, DefaultServlet.Range range, java.lang.String path)` Handle a partial PUT.
`protected javax.xml.transform.Source`	`findXsltInputStream(javax.naming.directory.DirContext directory)` Return a Source for the xsl template (if possible)
`protected java.lang.String`	`getPathPrefix(HttpServletRequest request)` Determines the appropriate path to prepend resources with when generating directory listings.
`protected java.lang.String`	`getReadme(javax.naming.directory.DirContext directory)` Get the readme file as a string.
`protected java.lang.String`	`getRelativePath(HttpServletRequest request)` Return the relative path associated with this servlet.
`protected java.lang.String`	`getRelativePath(HttpServletRequest request, boolean allowEmptyPath)`
`void`	`init()` Initialize this servlet.
`protected DefaultServlet.Range`	`parseContentRange(HttpServletRequest request, HttpServletResponse response)` Parse the content-range header.
`protected java.util.ArrayList<DefaultServlet.Range>`	`parseRange(HttpServletRequest request, HttpServletResponse response, ResourceAttributes resourceAttributes)` Parse the range header.
`protected java.io.InputStream`	`render(java.lang.String contextPath, CacheEntry cacheEntry)` Decide which way to render.
`protected java.io.InputStream`	`renderHtml(java.lang.String contextPath, CacheEntry cacheEntry)` Return an InputStream to an HTML representation of the contents of this directory.
`protected java.lang.String`	`renderSize(long size)` Render the specified file size (in bytes).
`protected java.io.InputStream`	`renderXml(java.lang.String contextPath, CacheEntry cacheEntry, javax.xml.transform.Source xsltSource)` Return an InputStream to an HTML representation of the contents of this directory.
`protected java.lang.String`	`rewriteUrl(java.lang.String path)` URL rewriter.
`protected void`	`serveResource(HttpServletRequest request, HttpServletResponse response, boolean content)` Serve the specified resource, optionally including the data content.

Methods inherited from class javax.servlet.http.HttpServlet
doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - debug
```
protected int debug
```
    The debugging detail level for this servlet.
  - input
```
protected int input
```
    The input buffer size to use when serving resources.
  - listings
```
protected boolean listings
```
    Should we generate directory listings?
  - readOnly
```
protected boolean readOnly
```
    Read only flag. By default, it's set to true.
  - output
```
protected int output
```
    The output buffer size to use when serving resources.
  - urlEncoder
```
protected static final URLEncoder urlEncoder
```
    Array containing the safe characters set.
  - localXsltFile
```
protected java.lang.String localXsltFile
```
    Allow customized directory listing per directory.
  - contextXsltFile
```
protected java.lang.String contextXsltFile
```
    Allow customized directory listing per context.
  - globalXsltFile
```
protected java.lang.String globalXsltFile
```
    Allow customized directory listing per instance.
  - readmeFile
```
protected java.lang.String readmeFile
```
    Allow a readme file to be included.
  - resources
```
protected transient ProxyDirContext resources
```
    Proxy directory context.
  - fileEncoding
```
protected java.lang.String fileEncoding
```
    File encoding to be used when reading static files. If none is specified the platform default is used.
  - sendfileSize
```
protected int sendfileSize
```
    Minimum size for sendfile usage in bytes.
  - useAcceptRanges
```
protected boolean useAcceptRanges
```
    Should the Accept-Ranges: bytes header be send with static resources?
  - FULL
```
protected static final java.util.ArrayList<DefaultServlet.Range> FULL
```
    Full range marker.
  - showServerInfo
```
protected boolean showServerInfo
```
    Flag to determine if server information is presented.
  - mimeSeparation
```
protected static final java.lang.String mimeSeparation
```
    MIME multipart separation string
    
    See Also:
    Constant Field Values
  - RESOURCES_JNDI_NAME
```
protected static final java.lang.String RESOURCES_JNDI_NAME
```
    JNDI resources name.
    
    See Also:
    Constant Field Values
  - sm
```
protected static final StringManager sm
```
    The string manager for this package.
  - BUFFER_SIZE
```
protected static final int BUFFER_SIZE
```
    Size of file transfer buffer in bytes.
    
    See Also:
    Constant Field Values
- Constructor Detail
  - DefaultServlet
```
public DefaultServlet()
```
- Method Detail
  - destroy
```
public void destroy()
```
    Finalize this servlet.
    
    Specified by:
    
    destroy in interface Servlet
    
    Overrides:
    
    destroy in class GenericServlet
  - init
```
public void init()
          throws ServletException
```
    Initialize this servlet.
    
    Overrides:
    
    init in class GenericServlet
    
    Throws:
    
    ServletException - if an exception occurs that interrupts the servlet's normal operation
  - getRelativePath
```
protected java.lang.String getRelativePath(HttpServletRequest request)
```
    Return the relative path associated with this servlet.
    
    Parameters:
    request - The servlet request we are processing
  - getRelativePath
```
protected java.lang.String getRelativePath(HttpServletRequest request,
                               boolean allowEmptyPath)
```
  - getPathPrefix
```
protected java.lang.String getPathPrefix(HttpServletRequest request)
```
    Determines the appropriate path to prepend resources with when generating directory listings. Depending on the behaviour of getRelativePath(HttpServletRequest) this will change.
    
    Parameters:
    request - the request to determine the path for
    
    Returns:
    the prefix to apply to all resources in the listing.
  - doGet
```
protected void doGet(HttpServletRequest request,
         HttpServletResponse response)
              throws java.io.IOException,
                     ServletException
```
    Process a GET request for the specified resource.
    
    Overrides:
    
    doGet in class HttpServlet
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
    
    ServletException - if a servlet-specified error occurs
    See Also:
    ServletResponse.setContentType(java.lang.String)
  - doHead
```
protected void doHead(HttpServletRequest request,
          HttpServletResponse response)
               throws java.io.IOException,
                      ServletException
```
    Process a HEAD request for the specified resource.
    
    Overrides:
    
    doHead in class HttpServlet
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
    
    ServletException - if a servlet-specified error occurs
  - doOptions
```
protected void doOptions(HttpServletRequest req,
             HttpServletResponse resp)
                  throws ServletException,
                         java.io.IOException
```
    Override default implementation to ensure that TRACE is correctly handled.
    
    Overrides:
    
    doOptions in class HttpServlet
    
    Parameters:
    req - the HttpServletRequest object that contains the request the client made of the servlet
    resp - the HttpServletResponse object that contains the response the servlet returns to the client
    
    Throws:
    
    java.io.IOException - if an input or output error occurs while the servlet is handling the OPTIONS request
    
    ServletException - if the request for the OPTIONS cannot be handled
  - doPost
```
protected void doPost(HttpServletRequest request,
          HttpServletResponse response)
               throws java.io.IOException,
                      ServletException
```
    Process a POST request for the specified resource.
    
    Overrides:
    
    doPost in class HttpServlet
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
    
    ServletException - if a servlet-specified error occurs
    See Also:
    ServletOutputStream, ServletResponse.setContentType(java.lang.String)
  - doPut
```
protected void doPut(HttpServletRequest req,
         HttpServletResponse resp)
              throws ServletException,
                     java.io.IOException
```
    Process a PUT request for the specified resource.
    
    Overrides:
    
    doPut in class HttpServlet
    
    Parameters:
    req - The servlet request we are processing
    resp - The servlet response we are creating
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
    
    ServletException - if a servlet-specified error occurs
  - executePartialPut
```
protected java.io.File executePartialPut(HttpServletRequest req,
                             DefaultServlet.Range range,
                             java.lang.String path)
                                  throws java.io.IOException
```
    Handle a partial PUT. New content specified in request is appended to existing content in oldRevisionContent (if present). This code does not support simultaneous partial updates to the same resource.
    
    Throws:
    
    java.io.IOException
  - doDelete
```
protected void doDelete(HttpServletRequest req,
            HttpServletResponse resp)
                 throws ServletException,
                        java.io.IOException
```
    Process a DELETE request for the specified resource.
    
    Overrides:
    
    doDelete in class HttpServlet
    
    Parameters:
    req - The servlet request we are processing
    resp - The servlet response we are creating
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
    
    ServletException - if a servlet-specified error occurs
  - checkIfHeaders
```
protected boolean checkIfHeaders(HttpServletRequest request,
                     HttpServletResponse response,
                     ResourceAttributes resourceAttributes)
                          throws java.io.IOException
```
    Check if the conditions specified in the optional If headers are satisfied.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    resourceAttributes - The resource information
    
    Returns:
    boolean true if the resource meets all the specified conditions, and false if any of the conditions is not satisfied, in which case request processing is stopped
    
    Throws:
    
    java.io.IOException
  - rewriteUrl
```
protected java.lang.String rewriteUrl(java.lang.String path)
```
    URL rewriter.
    
    Parameters:
    path - Path which has to be rewritten
  - displaySize
```
@Deprecated
protected void displaySize(java.lang.StringBuilder buf,
                          int filesize)
```
    Deprecated. Will be removed in Tomcat 8.0.x. Replaced by renderSize(long)
    
    Display the size of a file.
  - serveResource
```
protected void serveResource(HttpServletRequest request,
                 HttpServletResponse response,
                 boolean content)
                      throws java.io.IOException,
                             ServletException
```
    Serve the specified resource, optionally including the data content.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    content - Should the content be included?
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
    
    ServletException - if a servlet-specified error occurs
  - parseContentRange
```
protected DefaultServlet.Range parseContentRange(HttpServletRequest request,
                                     HttpServletResponse response)
                                          throws java.io.IOException
```
    Parse the content-range header.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    
    Returns:
    Range
    
    Throws:
    
    java.io.IOException
  - parseRange
```
protected java.util.ArrayList<DefaultServlet.Range> parseRange(HttpServletRequest request,
                                                   HttpServletResponse response,
                                                   ResourceAttributes resourceAttributes)
                                                        throws java.io.IOException
```
    Parse the range header.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    
    Returns:
    Vector of ranges
    
    Throws:
    
    java.io.IOException
  - render
```
protected java.io.InputStream render(java.lang.String contextPath,
                         CacheEntry cacheEntry)
                              throws java.io.IOException,
                                     ServletException
```
    Decide which way to render. HTML or XML.
    
    Throws:
    
    java.io.IOException
    
    ServletException
  - renderXml
```
protected java.io.InputStream renderXml(java.lang.String contextPath,
                            CacheEntry cacheEntry,
                            javax.xml.transform.Source xsltSource)
                                 throws java.io.IOException,
                                        ServletException
```
    Return an InputStream to an HTML representation of the contents of this directory.
    
    Parameters:
    contextPath - Context path to which our internal paths are relative
    
    Throws:
    
    java.io.IOException
    
    ServletException
  - renderHtml
```
protected java.io.InputStream renderHtml(java.lang.String contextPath,
                             CacheEntry cacheEntry)
                                  throws java.io.IOException,
                                         ServletException
```
    Return an InputStream to an HTML representation of the contents of this directory.
    
    Parameters:
    contextPath - Context path to which our internal paths are relative
    
    Throws:
    
    java.io.IOException
    
    ServletException
  - renderSize
```
protected java.lang.String renderSize(long size)
```
    Render the specified file size (in bytes).
    
    Parameters:
    size - File size (in bytes)
  - getReadme
```
protected java.lang.String getReadme(javax.naming.directory.DirContext directory)
                              throws java.io.IOException
```
    Get the readme file as a string.
    
    Throws:
    
    java.io.IOException
  - findXsltInputStream
```
protected javax.xml.transform.Source findXsltInputStream(javax.naming.directory.DirContext directory)
                                                  throws java.io.IOException
```
    Return a Source for the xsl template (if possible)
    
    Throws:
    
    java.io.IOException
  - checkSendfile
```
protected boolean checkSendfile(HttpServletRequest request,
                    HttpServletResponse response,
                    CacheEntry entry,
                    long length,
                    DefaultServlet.Range range)
```
    Check if sendfile can be used.
  - checkIfMatch
```
protected boolean checkIfMatch(HttpServletRequest request,
                   HttpServletResponse response,
                   ResourceAttributes resourceAttributes)
                        throws java.io.IOException
```
    Check if the if-match condition is satisfied.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    resourceAttributes - File object
    
    Returns:
    boolean true if the resource meets the specified condition, and false if the condition is not satisfied, in which case request processing is stopped
    
    Throws:
    
    java.io.IOException
  - checkIfModifiedSince
```
protected boolean checkIfModifiedSince(HttpServletRequest request,
                           HttpServletResponse response,
                           ResourceAttributes resourceAttributes)
```
    Check if the if-modified-since condition is satisfied.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    resourceAttributes - File object
    
    Returns:
    boolean true if the resource meets the specified condition, and false if the condition is not satisfied, in which case request processing is stopped
  - checkIfNoneMatch
```
protected boolean checkIfNoneMatch(HttpServletRequest request,
                       HttpServletResponse response,
                       ResourceAttributes resourceAttributes)
                            throws java.io.IOException
```
    Check if the if-none-match condition is satisfied.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    resourceAttributes - File object
    
    Returns:
    boolean true if the resource meets the specified condition, and false if the condition is not satisfied, in which case request processing is stopped
    
    Throws:
    
    java.io.IOException
  - checkIfUnmodifiedSince
```
protected boolean checkIfUnmodifiedSince(HttpServletRequest request,
                             HttpServletResponse response,
                             ResourceAttributes resourceAttributes)
                                  throws java.io.IOException
```
    Check if the if-unmodified-since condition is satisfied.
    
    Parameters:
    request - The servlet request we are processing
    response - The servlet response we are creating
    resourceAttributes - File object
    
    Returns:
    boolean true if the resource meets the specified condition, and false if the condition is not satisfied, in which case request processing is stopped
    
    Throws:
    
    java.io.IOException
  - copy
```
protected void copy(CacheEntry cacheEntry,
        java.io.InputStream is,
        ServletOutputStream ostream)
             throws java.io.IOException
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    cacheEntry - The cache entry for the source resource
    is - The input stream to read the source resource from
    ostream - The output stream to write to
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
  - copy
```
protected void copy(CacheEntry cacheEntry,
        java.io.InputStream is,
        java.io.PrintWriter writer)
             throws java.io.IOException
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    cacheEntry - The cache entry for the source resource
    is - The input stream to read the source resource from
    writer - The writer to write to
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
  - copy
```
protected void copy(CacheEntry cacheEntry,
        ServletOutputStream ostream,
        DefaultServlet.Range range)
             throws java.io.IOException
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    cacheEntry - The cache entry for the source resource
    ostream - The output stream to write to
    range - Range the client wanted to retrieve
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
  - copy
```
protected void copy(CacheEntry cacheEntry,
        ServletOutputStream ostream,
        java.util.Iterator<DefaultServlet.Range> ranges,
        java.lang.String contentType)
             throws java.io.IOException
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    cacheEntry - The cache entry for the source resource
    ostream - The output stream to write to
    ranges - Enumeration of the ranges the client wanted to retrieve
    contentType - Content type of the resource
    
    Throws:
    
    java.io.IOException - if an input/output error occurs
  - copyRange
```
protected java.io.IOException copyRange(java.io.InputStream istream,
                            ServletOutputStream ostream)
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    istream - The input stream to read from
    ostream - The output stream to write to
    
    Returns:
    Exception which occurred during processing
  - copyRange
```
protected java.io.IOException copyRange(java.io.Reader reader,
                            java.io.PrintWriter writer)
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    reader - The reader to read from
    writer - The writer to write to
    
    Returns:
    Exception which occurred during processing
  - copyRange
```
protected java.io.IOException copyRange(java.io.InputStream istream,
                            ServletOutputStream ostream,
                            long start,
                            long end)
```
    Copy the contents of the specified input stream to the specified output stream, and ensure that both streams are closed before returning (even in the face of an exception).
    
    Parameters:
    istream - The input stream to read from
    ostream - The output stream to write to
    start - Start of the range which will be copied
    end - End of the range which will be copied
    
    Returns:
    Exception which occurred during processing

Class DefaultServlet

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class javax.servlet.http.HttpServlet

Methods inherited from class javax.servlet.GenericServlet

Methods inherited from class java.lang.Object

Field Detail

debug

input

listings

readOnly

output

urlEncoder

localXsltFile

contextXsltFile

globalXsltFile

readmeFile

resources

fileEncoding

sendfileSize

useAcceptRanges

FULL

showServerInfo

mimeSeparation

RESOURCES_JNDI_NAME

sm

BUFFER_SIZE

Constructor Detail

DefaultServlet

Method Detail

destroy

init

getRelativePath

getRelativePath

getPathPrefix

doGet

doHead

doOptions

doPost

doPut

executePartialPut

doDelete

checkIfHeaders

rewriteUrl

displaySize

serveResource

parseContentRange

parseRange

render

renderXml

renderHtml

renderSize

getReadme

findXsltInputStream

checkSendfile

checkIfMatch

checkIfModifiedSince

checkIfNoneMatch

checkIfUnmodifiedSince

copy

copy

copy

copy

copyRange

copyRange

copyRange