Java HttpClientBuilder.setDefaultHeaders方法代碼示例

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
/**
 * Creates new HttpClient for interacting with webmate API.
 *
 * @param authInfo    authentication information (email address + token)
 * @param environment API endpoint address
 * @return new HttpClient to be used by Service clients.
 */
private static HttpClient makeHttpClient(WebmateAuthInfo authInfo, WebmateEnvironment environment, HttpClientBuilder httpClientBuilder) {

    httpClientBuilder.setUserAgent(WEBMATE_JAVASDK_USERAGENT);

    List<Header> headers = new ArrayList<>();

    headers.add(new BasicHeader(WEBMATE_USER_HEADERKEY, authInfo.emailAddress));
    headers.add(new BasicHeader(WEBMATE_APITOKEN_HEADERKEY, authInfo.apiKey));
    headers.add(new BasicHeader("Content-Type", "application/json"));

    httpClientBuilder.setDefaultHeaders(headers);
    return httpClientBuilder.build();
}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
protected void setCloudAuthHeaderIfConfigured(HttpClientBuilder clientBuilder) {
  if (!Strings.isNullOrEmpty(cloudTokenFetchUrl) && !Strings.isNullOrEmpty(cloudAPIKey)) {
    Token cloudToken = getCloudToken();
    String cloudTokenString = cloudToken.getAccess_token();
    if (!Strings.isNullOrEmpty(cloudTokenString)) {
      Header header = new BasicHeader("Authorization", cloudTokenString);
      clientBuilder.setDefaultHeaders(ImmutableSet.of(header));
    }
  }

}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
/**
 * springboot初始化restTemplate
 */
@Bean
public RestTemplate initRestTemplate() {
    // 長連接保持30秒
    PoolingHttpClientConnectionManager pollingConnectionManager = new PoolingHttpClientConnectionManager(30, TimeUnit.SECONDS);
    // 總連接數
    pollingConnectionManager.setMaxTotal(1000);
    // 同路由的並發數
    pollingConnectionManager.setDefaultMaxPerRoute(1000);

    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setConnectionManager(pollingConnectionManager);
    // 重試次數，默認是3次，沒有開啟
    httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler(2, true));
    // 保持長連接配置，需要在頭添加Keep-Alive
    httpClientBuilder.setKeepAliveStrategy(new DefaultConnectionKeepAliveStrategy());

    RequestConfig.Builder builder = RequestConfig.custom();
    builder.setConnectionRequestTimeout(200);
    builder.setConnectTimeout(5000);
    builder.setSocketTimeout(5000);

    RequestConfig requestConfig = builder.build();
    httpClientBuilder.setDefaultRequestConfig(requestConfig);

    List<Header> headers = new ArrayList<>();
    headers.add(new BasicHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.16 Safari/537.36"));
    headers.add(new BasicHeader("Accept-Encoding", "gzip,deflate"));
    headers.add(new BasicHeader("Accept-Language", "zh-CN"));
    headers.add(new BasicHeader("Connection", "Keep-Alive"));

    httpClientBuilder.setDefaultHeaders(headers);

    HttpClient httpClient = httpClientBuilder.build();

    // httpClient連接配置，底層是配置RequestConfig
    HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
    // 連接超時
    clientHttpRequestFactory.setConnectTimeout(5000);
    // 數據讀取超時時間，即SocketTimeout
    clientHttpRequestFactory.setReadTimeout(5000);
    // 連接不夠用的等待時間，不宜過長，必須設置，比如連接不夠用時，時間過長將是災難性的
    clientHttpRequestFactory.setConnectionRequestTimeout(200);
    // 緩衝請求數據，默認值是true。通過POST或者PUT大量發送數據時，建議將此屬性更改為false，以免耗盡內存。
    clientHttpRequestFactory.setBufferRequestBody(false);

    // 添加內容轉換器
    List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
    messageConverters.add(initStringHttpMessageConverter());
    messageConverters.add(new FormHttpMessageConverter());
    messageConverters.add(new MappingJackson2XmlHttpMessageConverter());
    messageConverters.add(new MappingJackson2HttpMessageConverter());

    RestTemplate restTemplate = new RestTemplate(messageConverters);
    restTemplate.setRequestFactory(clientHttpRequestFactory);
    restTemplate.setErrorHandler(new DefaultResponseErrorHandler());
    return restTemplate;

}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
private HttpClientTemplate() {
    // 長連接保持30秒
    PoolingHttpClientConnectionManager pollingConnectionManager = new PoolingHttpClientConnectionManager(timeToLive, TimeUnit.SECONDS);
    // 總連接數
    pollingConnectionManager.setMaxTotal(maxTotal);
    // 同路由的並發數
    pollingConnectionManager.setDefaultMaxPerRoute(defaultMaxPerRoute);
    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setConnectionManager(pollingConnectionManager);
    // 重試次數，默認是3次，沒有開啟
    httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler(retryCount, requestSentRetryEnabled));
    // 保持長連接配置，需要在頭添加Keep-Alive
    httpClientBuilder.setKeepAliveStrategy(new DefaultConnectionKeepAliveStrategy());

    List<Header> headers = new ArrayList<>();
    // 參考：http://www.cnblogs.com/sink_cup/archive/2011/03/15/http_user_agent.html
    // headers.add(new BasicHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.16 Safari/537.36"));
    // 不需要設置，可能會亂碼，請參考：http://www.crifan.com/set_accept_encoding_header_to_gzip_deflate_return_messy_code/
    // headers.add(new BasicHeader("Accept-Encoding", "gzip,deflate"));
    // headers.add(new BasicHeader("Accept-Language", "zh-CN"));
    headers.add(new BasicHeader("Connection", "Keep-Alive"));
    httpClientBuilder.setDefaultHeaders(headers);
    HttpClient httpClient = httpClientBuilder.build();

    // httpClient連接配置，底層是配置RequestConfig
    HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
    // 連接超時
    clientHttpRequestFactory.setConnectTimeout(connectTimeout);
    // 數據讀取超時時間，即SocketTimeout
    clientHttpRequestFactory.setReadTimeout(readTimeout);
    // 連接不夠用的等待時間，不宜過長，必須設置，比如連接不夠用時，時間過長將是災難性的
    clientHttpRequestFactory.setConnectionRequestTimeout(connectionRequestTimeout);
    // 緩衝請求數據，默認值是true。通過POST或者PUT大量發送數據時，建議將此屬性更改為false，以免耗盡內存。
    if (!bufferRequestBody) {
        clientHttpRequestFactory.setBufferRequestBody(false);
    }
    // 添加內容轉換器
    // List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
    messageConverters.add(new FastJsonHttpMessageConverter());
    messageConverters.add(new StringHttpMessageConverter(Charset.forName(charset)));
    messageConverters.add(new ByteArrayHttpMessageConverter());
    super.setMessageConverters(messageConverters);
    super.setRequestFactory(clientHttpRequestFactory);
    super.setErrorHandler(new DefaultResponseErrorHandler());
}