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ServletRequestWrapper
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Full Name: Type: Implements: javaxservletServletRequestWrapper Class
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javaxservletServletRequest
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An implementation of ServletRequest that can be subclassed to extend the servlet engine s implementation class
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JSP: The Complete Reference
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ServletRequestWrapper
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public ServletRequestWrapper(ServletRequest request)
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Creates a ServletRequest adapter for the given request object
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Methods
getAttribute
public Object getAttribute(String name)
Returns the value of the specified attribute, or null if no attribute of the specified name exists
getAttributeNames
public Enumeration getAttributeNames()
Returns an Enumeration of the names of the attributes available to this request, or an empty Enumeration if the request has no attributes
getCharacterEncoding
public String getCharacterEncoding()
Returns the name of the character encoding used in the body of this request, or null if the request does not specify a character encoding
getContentLength
public int getContentLength()
Returns the length of the request body or -1 if the length is not known In HTTP servlets, this is the same as the value of the CGI variable CONTENT_LENGTH
getContentType
public String getContentType()
Appendix A:
Servlet API Version 23
Returns the MIME type of the body of the request, or null if not known In HTTP servlets, same as the value of the CGI variable CONTENT_TYPE
getInputStream
public ServletInputStream getInputStream() throws IOException
Retrieves the body of the request as binary data Either getInputStream() or getReader() may be called to read the body, but not both
getLocale
public Locale getLocale()
Returns the preferred Locale in which the client will accept content, if specified Otherwise, returns the default locale for the server
getLocales
public Enumeration getLocales()
Returns an Enumeration of Locale objects in order of user preference, or an Enumeration containing one Locale, the default locale for the server, if the client indicates no preferred locale
getParameter
public String getParameter(String name)
Returns the value of a request parameter as a String, or null if the parameter does not exist
getParameterMap
public Map getParameterMap() APPENDIXES
Returns a javautilMap of the parameters of this request
getParameterNames
public Enumeration getParameterNames()
JSP: The Complete Reference
Returns a javautilEnumeration of the names of the parameters in this request, or an empty Enumeration if the request has no parameters
getParameterValues
public String getParameterValues(String name)
Returns an array of String objects containing all the values of the given request parameter, or null if the parameter does not exist
getProtocol
public String getProtocol()
Returns the name and version of the protocol the request uses The value returned is in the form protocol/majorVersionminorVersion In HTTP servlets, this is the same as the CGI variable SERVER_PROTOCOL
getReader
public BufferedReader getReader() throws IOException
Retrieves the body of the request as character data Either getInputStream() or getReader() may be called, but not both
getRealPath
public String getRealPath(String path)
Returns getRealPath(String path)
getRemoteAddr
public String getRemoteAddr()
Returns the Internet Protocol (IP) address of the client that sent the request For HTTP servlets, same as the CGI variable REMOTE_ADDR
getRemoteHost
public String getRemoteHost()
Appendix A:
Servlet API Version 23
Returns the name of the client that sent the request, or the client s IP address if the name cannot be determined For HTTP servlets, same as the CGI variable REMOTE_HOST
getRequest
public ServletRequest getRequest()
Returns the wrapped request object
getRequestDispatcher
public RequestDispatcher getRequestDispatcher(String path)
Returns a RequestDispatcher object for the resource located at the specified path The difference between this method and ServletContextgetRequestDispatcher() is that this method can take a relative path
getScheme
public String getScheme()
Returns the scheme used to make the request
getServerName
public String getServerName()
Returns the server host name for the server receiving the request In HTTP servlets, this is the same as the CGI variable SERVER_NAME
getServerPort
public int getServerPort() APPENDIXES
Returns the port number to which this request was sent In HTTP servlets, this is the same as the CGI variable SERVER_PORT
isSecure
public boolean isSecure()
JSP: The Complete Reference
Returns true if this request was made using a secure channel, such as https
removeAttribute
public void removeAttribute(String name)
Removes the named attribute from this request
setAttribute
public void setAttribute(String name, Object o)
Binds an attribute to this request under the given name
setCharacterEncoding
public void setCharacterEncoding(String enc) throws UnsupportedEncodingException
Specifies the character encoding used in the body of this request Must be called before reading the request parameters or input data are read
setRequest
public void setRequest(ServletRequest request)
Sets the request object
ServletResponse
Full Name: Type: javaxservletServletResponse Interface
Encapsulates all information about the response generated for a request, including response headers, the status code, and the output stream HttpServletResponse extends this interface for HTTP-specific features
Methods
flushBuffer
public void flushBuffer() throws IOException
Appendix A:
Servlet API Version 23
Causes the buffer to be written to the client, thus committing the response
getBufferSize
public int getBufferSize()
Returns the actual buffer size used in the response If buffering is turned off, returns zero
getCharacterEncoding
public String getCharacterEncoding()
Returns the name of the character set encoding for this response
getLocale
public Locale getLocale()
Returns the locale used by the response
getOutputStream
public ServletOutputStream getOutputStream() throws IOException
Returns the ServletOutputStream for this response Cannot be called if getWriter() has already been called for this response
getWrite
public PrintWriter getWriter() throws IOException
Returns a PrintWriter for this response Cannot be called if getOutputStream() has already been called for this response
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