org.apache.http.HttpStatus#SC_CONTINUE源码实例Demo

/**
 * Checks if a response message contains a body.
 *
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 */
/*
 * 检查请求结果 Response 是否存在 body
 *
 * 规则是这样的，要 必须 满足 5 点：
 * 1. 请求方法不是 HEAD 方法
 * 2. Status > 100
 * 3. Status < 200
 * 4. Status != 204
 * 5. Status != 304
 *
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD &&
            !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK) &&
            responseCode != HttpStatus.SC_NO_CONTENT &&
            responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

private void requestDidNotExpect100ContinueButResponseIsOne(
		HttpRequest request, HttpResponse response)
		throws ClientProtocolException {
	if (response.getStatusLine().getStatusCode() != HttpStatus.SC_CONTINUE) {
		return;
	}

	if (!requestWasWrapped(request)) {
		return;
	}

	ProtocolVersion originalProtocol = getOriginalRequestProtocol((RequestWrapper) request);

	if (originalProtocol.compareToVersion(HttpVersion.HTTP_1_1) >= 0) {
		return;
	}

	if (originalRequestDidNotExpectContinue((RequestWrapper) request)) {
		throw new ClientProtocolException(
				"The incoming request did not contain a "
						+ "100-continue header, but the response was a Status 100, continue.");

	}
}
 

private int computeStatus(int status) {
    switch (status) { 
        case HttpStatus.SC_FORBIDDEN:
        case HttpStatus.SC_METHOD_NOT_ALLOWED:
        case HttpStatus.SC_BAD_REQUEST:
        case HttpStatus.SC_UNAUTHORIZED:
        case HttpStatus.SC_PAYMENT_REQUIRED:
        case HttpStatus.SC_NOT_FOUND:
        case HttpStatus.SC_NOT_ACCEPTABLE:
        case HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED:
        case HttpStatus.SC_REQUEST_TIMEOUT:
        case HttpStatus.SC_CONFLICT:
        case HttpStatus.SC_GONE:
        case HttpStatus.SC_LENGTH_REQUIRED:
        case HttpStatus.SC_PRECONDITION_FAILED:
        case HttpStatus.SC_REQUEST_TOO_LONG:
        case HttpStatus.SC_REQUEST_URI_TOO_LONG:
        case HttpStatus.SC_UNSUPPORTED_MEDIA_TYPE:
        case HttpStatus.SC_REQUESTED_RANGE_NOT_SATISFIABLE:
        case HttpStatus.SC_EXPECTATION_FAILED:
        case HttpStatus.SC_INSUFFICIENT_SPACE_ON_RESOURCE:
        case HttpStatus.SC_METHOD_FAILURE:
        case HttpStatus.SC_UNPROCESSABLE_ENTITY:
        case HttpStatus.SC_LOCKED:
        case HttpStatus.SC_FAILED_DEPENDENCY:
        case HttpStatus.SC_INTERNAL_SERVER_ERROR:
        case HttpStatus.SC_NOT_IMPLEMENTED:
        case HttpStatus.SC_BAD_GATEWAY:
        case HttpStatus.SC_SERVICE_UNAVAILABLE:
        case HttpStatus.SC_GATEWAY_TIMEOUT:
        case HttpStatus.SC_HTTP_VERSION_NOT_SUPPORTED:
        case HttpStatus.SC_INSUFFICIENT_STORAGE:
            return 0;
        case HttpStatus.SC_CONTINUE:
        case HttpStatus.SC_SWITCHING_PROTOCOLS:
        case HttpStatus.SC_PROCESSING:
        case HttpStatus.SC_OK:
        case HttpStatus.SC_CREATED:
        case HttpStatus.SC_ACCEPTED:
        case HttpStatus.SC_NON_AUTHORITATIVE_INFORMATION:
        case HttpStatus.SC_NO_CONTENT:
        case HttpStatus.SC_RESET_CONTENT:
        case HttpStatus.SC_PARTIAL_CONTENT:
        case HttpStatus.SC_MULTI_STATUS:
        case HttpStatus.SC_MULTIPLE_CHOICES:
        case HttpStatus.SC_MOVED_PERMANENTLY:
        case HttpStatus.SC_MOVED_TEMPORARILY:
        case HttpStatus.SC_SEE_OTHER:
        case HttpStatus.SC_NOT_MODIFIED:
        case HttpStatus.SC_USE_PROXY:
        case HttpStatus.SC_TEMPORARY_REDIRECT:
            return 1;
        default : 
            return 1;
    }
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 *
 * @param requestMethod request method
 * @param responseCode  response status code
 * @return whether the response has a body
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
            && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
            && responseCode != HttpStatus.SC_NO_CONTENT
            && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}
 

/**
 * Checks if a response message contains a body.
 * @see <a href="https://tools.ietf.org/html/rfc7230#section-3.3">RFC 7230 section 3.3</a>
 * @param requestMethod request method
 * @param responseCode response status code
 * @return whether the response has a body
 */
private static boolean hasResponseBody(int requestMethod, int responseCode) {
    return requestMethod != Request.Method.HEAD
        && !(HttpStatus.SC_CONTINUE <= responseCode && responseCode < HttpStatus.SC_OK)
        && responseCode != HttpStatus.SC_NO_CONTENT
        && responseCode != HttpStatus.SC_NOT_MODIFIED;
}