public class FilterWrapper extends Base implements javax.servlet.Filter
Base.LoggingWriter, Base.StackFrame
Constructor and Description |
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FilterWrapper()
Public default constructor; required by spec.
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Modifier and Type | Method and Description |
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void |
destroy()
Called by the servlet container to indicate to a filter that it is being taken out of service.
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void |
doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse res, javax.servlet.FilterChain chain)
Called by the servlet container to allow the servlet to respond to a request.
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protected String |
getDescription()
Returns a string representation of this object's attributes.
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protected javax.servlet.Filter |
getFilter()
Get the wrapped Filter.
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protected javax.servlet.FilterConfig |
getFilterConfig()
Get the wrapped FilterConfig.
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protected SessionHelper |
getSessionHelper()
Get the SessionHelper.
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void |
init(javax.servlet.FilterConfig cfg)
Called by the servlet container to indicate to a filter that it is placed into service.
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String |
toString()
Returns a string representation of the object.
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azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, wait
public FilterWrapper()
public void init(javax.servlet.FilterConfig cfg) throws javax.servlet.ServletException
The servlet container calls the init
method exactly once after instantiating the filter. The init
method must complete successfully before the filter is asked to do any filtering work.
The servlet container cannot place the filter into service if the init
method either:
ServletException
init
in interface javax.servlet.Filter
cfg
- a FilterConfig
object containing the filter's configuration and initialization parametersjavax.servlet.ServletException
- if an exception has occurred that interferes with the filter's normal operationpublic void doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse res, javax.servlet.FilterChain chain) throws javax.servlet.ServletException, IOException
This method is only called after the servlet's init()
method has completed successfully.
Servlets typically run inside multithreaded servlet containers that can handle multiple requests concurrently. Developers must be aware to synchronize access to any shared resources such as files, network connections, and as well as the servlet's class and instance variables. More information on multithreaded programming in Java is available in the Java tutorial on multi-threaded programming.
doFilter
in interface javax.servlet.Filter
req
- the ServletRequest
object that contains the client's requestres
- the ServletResponse
object that contains the servlet's responsechain
- the FilterChain to use to invoke the next filter or the Servletjavax.servlet.ServletException
- if an exception occurs that interferes with the filter's normal operationIOException
- if an input or output exception occurspublic void destroy()
doFilter
method have exited or after a timeout period has passed. After the servlet container calls this method, it will not call the doFilter
method again on this instance of the filter.
This method gives the filter an opportunity to clean up any resources that are being held (for example, memory, file handles, threads) and make sure that any persistent state is synchronized with the filter's current state in memory.
destroy
in interface javax.servlet.Filter
public String toString()
protected String getDescription()
protected javax.servlet.FilterConfig getFilterConfig()
protected javax.servlet.Filter getFilter()
protected SessionHelper getSessionHelper()