Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## javax.servlet
Interface ServletResponse

All Known Subinterfaces:
  HttpServletResponse

public interface ServletResponse

ServletReponse control the output to the client.

A typical servlet will output its response as follows: ``

     response.setContentType("text/html; charset=UTF-8");
     PrintWriter pw = response.getWriter();
     pw.println("Hello, world");

#### Buffering

The servlet engine buffers output before sending it to the client. Buffering adds efficiency and flexibility. Until data is actually committed to the client, the servlet can change headers or reset the entire results.

#### Character encoding

Use either `setContentType` or `setLocale` to set the character encoding. `

     response.setContentType("text/html; charset=ISO-8859-2");

`

Method Summary
`void` | `flushBuffer()` Flushes the buffer to the client.
`int` | `getBufferSize()` Returns the size of the output buffer.
`java.lang.String` | `getCharacterEncoding()` Returns the character encoding the response is using for output.
`java.util.Locale` | `getLocale()` Returns the output locale.
`ServletOutputStream` | `getOutputStream()` Returns an output stream for writing to the client.
`java.io.PrintWriter` | `getWriter()` Returns a PrintWriter with the proper character encoding for writing text data to the client.
`boolean` | `isCommitted()` Returns true if some data has actually been send to the client.
`void` | `reset()` Resets the output stream, clearing headers and the output buffer.
`void` | `setBufferSize(int size)` Sets the output buffer size to `size`.
`void` | `setContentLength(int len)` Deprecated.
`void` | `setContentType(java.lang.String type)` Sets the response content type.
`void` | `setLocale(java.util.Locale locale)` Sets the output locale.

Method Detail

### setContentType

    public void setContentType(java.lang.String type)

  Sets the response content type. The content type includes the character encoding. The content type must be set before calling `getWriter()` so the writer can use the proper character encoding.

  To set the output character encoding to ISO-8859-2, use the following: ``

       response.setContentType("text/html; charset=ISO-8859-2");

  Parameters:
    `type` - the mime type of the output

### getCharacterEncoding

    public java.lang.String getCharacterEncoding()

  Returns the character encoding the response is using for output.

### setLocale

    public void setLocale(java.util.Locale locale)

  Sets the output locale. The response will set the character encoding based on the locale. For example, setting the "kr" locale will set the character encoding to "EUC_KR".

### getLocale

    public java.util.Locale getLocale()

  Returns the output locale.

### getOutputStream

    public ServletOutputStream getOutputStream()
                                        throws java.io.IOException

  Returns an output stream for writing to the client. You can use the output stream to write binary data.

### getWriter

    public java.io.PrintWriter getWriter()
                                  throws java.io.IOException

  Returns a PrintWriter with the proper character encoding for writing text data to the client.

### setBufferSize

    public void setBufferSize(int size)

  Sets the output buffer size to `size`. The servlet engine may round the size up.
  Parameters:
    `size` - the new output buffer size.

### getBufferSize

    public int getBufferSize()

  Returns the size of the output buffer.

### flushBuffer

    public void flushBuffer()
                     throws java.io.IOException

  Flushes the buffer to the client.

### isCommitted

    public boolean isCommitted()

  Returns true if some data has actually been send to the client. The data will be sent if the buffer overflows or if it's explicitly flushed.

### reset

    public void reset()

  Resets the output stream, clearing headers and the output buffer. Calling `reset()` after data has been committed is illegal.
  Throws:
    java.lang.IllegalStateException - if `isCommitted()` is true.

### setContentLength

    public void setContentLength(int len)

  Deprecated.

  Resin automatically handles output content length and chunking. This method is ignored.

Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD