ServletResponseWrapper

java.lang.Object
- jakarta.servlet.ServletResponseWrapper

All Implemented Interfaces:

ServletResponse

Direct Known Subclasses:

HttpServletResponseWrapper
```
public class ServletResponseWrapper
extends java.lang.Object
implements ServletResponse
```
Provides a convenient implementation of the ServletResponse interface that can be subclassed by developers wishing to adapt the response from a Servlet. This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped response object.

Since:

Servlet 2.3

See Also:

ServletResponse

Constructor Summary

Constructors
Constructor and Description

ServletResponseWrapper(ServletResponse response)
Creates a ServletResponse adaptor wrapping the given response object.

Constructors
Constructor and Description
`ServletResponseWrapper(ServletResponse response)` Creates a ServletResponse adaptor wrapping the given response object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`flushBuffer()` The default behavior of this method is to call flushBuffer() on the wrapped response object.
`int`	`getBufferSize()` The default behavior of this method is to return getBufferSize() on the wrapped response object.
`java.lang.String`	`getCharacterEncoding()` The default behavior of this method is to return getCharacterEncoding() on the wrapped response object.
`java.lang.String`	`getContentType()` The default behavior of this method is to return getContentType() on the wrapped response object.
`java.util.Locale`	`getLocale()` The default behavior of this method is to return getLocale() on the wrapped response object.
`ServletOutputStream`	`getOutputStream()` The default behavior of this method is to return getOutputStream() on the wrapped response object.
`ServletResponse`	`getResponse()` Return the wrapped ServletResponse object.
`java.io.PrintWriter`	`getWriter()` The default behavior of this method is to return getWriter() on the wrapped response object.
`boolean`	`isCommitted()` The default behavior of this method is to return isCommitted() on the wrapped response object.
`boolean`	`isWrapperFor(java.lang.Class<?> wrappedType)` Checks (recursively) if this ServletResponseWrapper wraps a `ServletResponse` of the given class type.
`boolean`	`isWrapperFor(ServletResponse wrapped)` Checks (recursively) if this ServletResponseWrapper wraps the given `ServletResponse` instance.
`void`	`reset()` The default behavior of this method is to call reset() on the wrapped response object.
`void`	`resetBuffer()` The default behavior of this method is to call resetBuffer() on the wrapped response object.
`void`	`setBufferSize(int size)` The default behavior of this method is to call setBufferSize(int size) on the wrapped response object.
`void`	`setCharacterEncoding(java.lang.String charset)` The default behavior of this method is to call setCharacterEncoding(String charset) on the wrapped response object.
`void`	`setContentLength(int len)` The default behavior of this method is to call setContentLength(int len) on the wrapped response object.
`void`	`setContentLengthLong(long len)` The default behavior of this method is to call setContentLengthLong(long len) on the wrapped response object.
`void`	`setContentType(java.lang.String type)` The default behavior of this method is to call setContentType(String type) on the wrapped response object.
`void`	`setLocale(java.util.Locale loc)` The default behavior of this method is to call setLocale(Locale loc) on the wrapped response object.
`void`	`setResponse(ServletResponse response)` Sets the response being wrapped.

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

- Constructor Detail
  - ServletResponseWrapper
```
public ServletResponseWrapper(ServletResponse response)
```
    Creates a ServletResponse adaptor wrapping the given response object.
    
    Parameters:
    
    response - the ServletResponse to be wrapped
    
    Throws:
    
    java.lang.IllegalArgumentException - if the response is null.
- Method Detail
  - getResponse
```
public ServletResponse getResponse()
```
    Return the wrapped ServletResponse object.
    
    Returns:
    
    the wrapped ServletResponse
  - setResponse
```
public void setResponse(ServletResponse response)
```
    Sets the response being wrapped.
    
    Parameters:
    
    response - the ServletResponse to be installed
    
    Throws:
    
    java.lang.IllegalArgumentException - if the response is null.
  - setCharacterEncoding
```
public void setCharacterEncoding(java.lang.String charset)
```
    The default behavior of this method is to call setCharacterEncoding(String charset) on the wrapped response object.
    
    Specified by:
    
    setCharacterEncoding in interface ServletResponse
    
    Parameters:
    
    charset - a String specifying only the character set defined by IANA Character Sets (http://www.iana.org/assignments/character-sets) or null
    
    Since:
    
    Servlet 2.4
    
    See Also:
    
    ServletResponse.setContentType(java.lang.String), ServletResponse.setLocale(java.util.Locale)
  - getCharacterEncoding
```
public java.lang.String getCharacterEncoding()
```
    The default behavior of this method is to return getCharacterEncoding() on the wrapped response object.
    
    Specified by:
    
    getCharacterEncoding in interface ServletResponse
    
    Returns:
    
    a String specifying the name of the character encoding, for example, UTF-8
  - getOutputStream
```
public ServletOutputStream getOutputStream()
                                    throws java.io.IOException
```
    The default behavior of this method is to return getOutputStream() on the wrapped response object.
    
    Specified by:
    
    getOutputStream in interface ServletResponse
    
    Returns:
    
    a ServletOutputStream for writing binary data
    
    Throws:
    
    java.io.IOException - if an input or output exception occurred
    
    See Also:
    
    ServletResponse.getWriter(), ServletResponse.reset()
  - getWriter
```
public java.io.PrintWriter getWriter()
                              throws java.io.IOException
```
    The default behavior of this method is to return getWriter() on the wrapped response object.
    
    Specified by:
    
    getWriter in interface ServletResponse
    
    Returns:
    
    a PrintWriter object that can return character data to the client
    
    Throws:
    
    java.io.UnsupportedEncodingException - if the character encoding returned by getCharacterEncoding cannot be used
    
    java.io.IOException - if an input or output exception occurred
    
    See Also:
    
    ServletResponse.getOutputStream(), ServletResponse.setCharacterEncoding(java.lang.String), ServletResponse.reset()
  - setContentLength
```
public void setContentLength(int len)
```
    The default behavior of this method is to call setContentLength(int len) on the wrapped response object.
    
    Specified by:
    
    setContentLength in interface ServletResponse
    
    Parameters:
    
    len - an integer specifying the length of the content being returned to the client; sets the Content-Length header
  - setContentLengthLong
```
public void setContentLengthLong(long len)
```
    The default behavior of this method is to call setContentLengthLong(long len) on the wrapped response object.
    
    Specified by:
    
    setContentLengthLong in interface ServletResponse
    
    Parameters:
    
    len - a long specifying the length of the content being returned to the client; sets the Content-Length header
    
    Since:
    
    Servlet 3.1
  - setContentType
```
public void setContentType(java.lang.String type)
```
    The default behavior of this method is to call setContentType(String type) on the wrapped response object.
    
    Specified by:
    
    setContentType in interface ServletResponse
    
    Parameters:
    
    type - a String specifying the MIME type of the content or null
    
    See Also:
    
    ServletResponse.setLocale(java.util.Locale), ServletResponse.setCharacterEncoding(java.lang.String), ServletResponse.getOutputStream(), ServletResponse.getWriter()
  - getContentType
```
public java.lang.String getContentType()
```
    The default behavior of this method is to return getContentType() on the wrapped response object.
    
    Specified by:
    
    getContentType in interface ServletResponse
    
    Returns:
    
    a String specifying the content type, for example, text/html; charset=UTF-8, or null
    
    Since:
    
    Servlet 2.4
  - setBufferSize
```
public void setBufferSize(int size)
```
    The default behavior of this method is to call setBufferSize(int size) on the wrapped response object.
    
    Specified by:
    
    setBufferSize in interface ServletResponse
    
    Parameters:
    
    size - the preferred buffer size
    
    See Also:
    
    ServletResponse.getBufferSize(), ServletResponse.flushBuffer(), ServletResponse.isCommitted(), ServletResponse.reset()
  - getBufferSize
```
public int getBufferSize()
```
    The default behavior of this method is to return getBufferSize() on the wrapped response object.
    
    Specified by:
    
    getBufferSize in interface ServletResponse
    
    Returns:
    
    the actual buffer size used
    
    See Also:
    
    ServletResponse.setBufferSize(int), ServletResponse.flushBuffer(), ServletResponse.isCommitted(), ServletResponse.reset()
  - flushBuffer
```
public void flushBuffer()
                 throws java.io.IOException
```
    The default behavior of this method is to call flushBuffer() on the wrapped response object.
    
    Specified by:
    
    flushBuffer in interface ServletResponse
    
    Throws:
    
    java.io.IOException - if the act of flushing the buffer cannot be completed.
    
    See Also:
    
    ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.isCommitted(), ServletResponse.reset()
  - isCommitted
```
public boolean isCommitted()
```
    The default behavior of this method is to return isCommitted() on the wrapped response object.
    
    Specified by:
    
    isCommitted in interface ServletResponse
    
    Returns:
    
    a boolean indicating if the response has been committed
    
    See Also:
    
    ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.flushBuffer(), ServletResponse.reset()
  - reset
```
public void reset()
```
    The default behavior of this method is to call reset() on the wrapped response object.
    
    Specified by:
    
    reset in interface ServletResponse
    
    See Also:
    
    ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.flushBuffer(), ServletResponse.isCommitted()
  - resetBuffer
```
public void resetBuffer()
```
    The default behavior of this method is to call resetBuffer() on the wrapped response object.
    
    Specified by:
    
    resetBuffer in interface ServletResponse
    
    See Also:
    
    ServletResponse.setBufferSize(int), ServletResponse.getBufferSize(), ServletResponse.isCommitted(), ServletResponse.reset()
  - setLocale
```
public void setLocale(java.util.Locale loc)
```
    The default behavior of this method is to call setLocale(Locale loc) on the wrapped response object.
    
    Specified by:
    
    setLocale in interface ServletResponse
    
    Parameters:
    
    loc - the locale of the response or {code @null}
    
    See Also:
    
    ServletResponse.getLocale(), ServletResponse.setContentType(java.lang.String), ServletResponse.setCharacterEncoding(java.lang.String)
  - getLocale
```
public java.util.Locale getLocale()
```
    The default behavior of this method is to return getLocale() on the wrapped response object.
    
    Specified by:
    
    getLocale in interface ServletResponse
    
    Returns:
    
    the Locale for this response.
    
    See Also:
    
    ServletResponse.setLocale(java.util.Locale)
  - isWrapperFor
```
public boolean isWrapperFor(ServletResponse wrapped)
```
    Checks (recursively) if this ServletResponseWrapper wraps the given ServletResponse instance.
    
    Parameters:
    
    wrapped - the ServletResponse instance to search for
    
    Returns:
    
    true if this ServletResponseWrapper wraps the given ServletResponse instance, false otherwise
    
    Since:
    
    Servlet 3.0
  - isWrapperFor
```
public boolean isWrapperFor(java.lang.Class<?> wrappedType)
```
    Checks (recursively) if this ServletResponseWrapper wraps a ServletResponse of the given class type.
    
    Parameters:
    
    wrappedType - the ServletResponse class type to search for
    
    Returns:
    
    true if this ServletResponseWrapper wraps a ServletResponse of the given class type, false otherwise
    
    Throws:
    
    java.lang.IllegalArgumentException - if the given class does not implement ServletResponse
    
    Since:
    
    Servlet 3.0

Class ServletResponseWrapper

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ServletResponseWrapper

Method Detail

getResponse

setResponse

setCharacterEncoding

getCharacterEncoding

getOutputStream

getWriter

setContentLength

setContentLengthLong

setContentType

getContentType

setBufferSize

getBufferSize

flushBuffer

isCommitted

reset

resetBuffer

setLocale

getLocale

isWrapperFor

isWrapperFor