Java HTTP.DEF_CONTENT_CHARSET属性代码示例

/**
 * Returns a list of {@link NameValuePair NameValuePairs} as parsed from an
 * {@link HttpEntity}. The encoding is taken from the entity's
 * Content-Encoding header.
 * <p>
 * This is typically used while parsing an HTTP POST.
 *
 * @param entity
 *            The entity to parse
 * @throws IOException
 *             If there was an exception getting the entity's data.
 */
public static List <NameValuePair> parse (
        final HttpEntity entity) throws IOException {
    ContentType contentType = ContentType.get(entity);
    if (contentType != null && contentType.getMimeType().equalsIgnoreCase(CONTENT_TYPE)) {
        String content = EntityUtils.toString(entity, Consts.ASCII);
        if (content != null && content.length() > 0) {
            Charset charset = contentType.getCharset();
            if (charset == null) {
                charset = HTTP.DEF_CONTENT_CHARSET;
            }
            return parse(content, charset);
        }
    }
    return Collections.emptyList();
}
 

/**
 * Creates a StringEntity with the specified content and content type.
 *
 * @param string content to be used. Not {@code null}.
 * @param contentType content type to be used. May be {@code null}, in which case the default
 *   MIME type {@link ContentType#TEXT_PLAIN} is assumed.
 *
 * @throws IllegalArgumentException if the string parameter is null
 *
 * @since 4.2
 */
public StringEntity(final String string, final ContentType contentType) {
    super();
    if (string == null) {
        throw new IllegalArgumentException("Source string may not be null");
    }
    Charset charset = contentType != null ? contentType.getCharset() : null;
    if (charset == null) {
        charset = HTTP.DEF_CONTENT_CHARSET;
    }
    try {
        this.content = string.getBytes(charset.name());
    } catch (UnsupportedEncodingException ex) {
        // should never happen
        throw new UnsupportedCharsetException(charset.name());
    }
    if (contentType != null) {
        setContentType(contentType.toString());
    }
}
 

public void setContent(final String source, final ContentType contentType) throws UnsupportedCharsetException {
    Args.notNull(source, "Source string");
    Charset charset = contentType != null?contentType.getCharset():null;
    if(charset == null) {
        charset = HTTP.DEF_CONTENT_CHARSET;
    }

    try {
        this.content = new BytesArray(source.getBytes(charset.name()));
    } catch (UnsupportedEncodingException var) {
        throw new UnsupportedCharsetException(charset.name());
    }

    if(contentType != null) {
        addHeader("Content-Type", contentType.toString());
    }
}
 

/**
 * Get the entity content as a String, using the provided default character set
 * if none is found in the entity.
 * If defaultCharset is null, the default "ISO-8859-1" is used.
 *
 * @param entity must not be null
 * @param defaultCharset character set to be applied if none found in the entity
 * @return the entity content as a String. May be null if
 *   {@link HttpEntity#getContent()} is null.
 * @throws ParseException if header elements cannot be parsed
 * @throws IllegalArgumentException if entity is null or if content length > Integer.MAX_VALUE
 * @throws IOException if an error occurs reading the input stream
 */
public static String toString(
        final HttpEntity entity, final Charset defaultCharset) throws IOException, ParseException {
    if (entity == null) {
        throw new IllegalArgumentException("HTTP entity may not be null");
    }
    InputStream instream = entity.getContent();
    if (instream == null) {
        return null;
    }
    try {
        if (entity.getContentLength() > Integer.MAX_VALUE) {
            throw new IllegalArgumentException("HTTP entity too large to be buffered in memory");
        }
        int i = (int)entity.getContentLength();
        if (i < 0) {
            i = 4096;
        }
        ContentType contentType = ContentType.getOrDefault(entity);
        Charset charset = contentType.getCharset();
        if (charset == null) {
            charset = defaultCharset;
        }
        if (charset == null) {
            charset = HTTP.DEF_CONTENT_CHARSET;
        }
        Reader reader = new InputStreamReader(instream, charset);
        CharArrayBuffer buffer = new CharArrayBuffer(i);
        char[] tmp = new char[1024];
        int l;
        while((l = reader.read(tmp)) != -1) {
            buffer.append(tmp, 0, l);
        }
        return buffer.toString();
    } finally {
        instream.close();
    }
}
 

@Override
public AuthenticationResponse handleResponse(final HttpResponse response) throws IOException {
    if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
        Charset charset = HTTP.DEF_CONTENT_CHARSET;
        ContentType contentType = ContentType.get(response.getEntity());
        if(contentType != null) {
            if(contentType.getCharset() != null) {
                charset = contentType.getCharset();
            }
        }
        try {
            final JsonParser parser = new JsonParser();
            final JsonObject json = parser.parse(new InputStreamReader(response.getEntity().getContent(), charset)).getAsJsonObject();
            final String token = json.getAsJsonPrimitive("token").getAsString();
            final String endpoint = json.getAsJsonPrimitive("endpoint").getAsString();
            return new AuthenticationResponse(response, token,
                    Collections.singleton(new Region(null, URI.create(endpoint), null, true)));
        }
        catch(JsonParseException e) {
            throw new IOException(e.getMessage(), e);
        }
    }
    else if(response.getStatusLine().getStatusCode() == HttpStatus.SC_UNAUTHORIZED
            || response.getStatusLine().getStatusCode() == HttpStatus.SC_FORBIDDEN) {
        throw new AuthorizationException(new Response(response));
    }
    throw new GenericException(new Response(response));
}