Apache-HTTPClient 用户验证实现

问题：在微服务框架之外的系统中，我们经常会遇到使用httpClient进行接口调用的问题，除了进行白名单的设置，很多时候我们需要在接口调用的时候需要身份认证。翻了一下官方文档，解决方法很多，但是都不太符合实际业务场景，这里提供一种简单粗暴的解决方法。

解决方法：利用请求头，将验证信息保存起来。

public class HttpClientUtils {

protected static final Logger LOG = LoggerFactory.getLogger(HttpClientUtils.class);

private static final String AUTHENKEY = "Authorization";

private static final String BASICKEY = "Basic ";

public static  String  getConnect(String url,String username,String password) {

CloseableHttpResponse response = null;

CloseableHttpClient client = HttpClients.createDefault();

HttpGet httpGet = new HttpGet(url);
Base64 token = new Base64();
String authenticationEncoding = token.encodeAsString(new String(username + ":" + password).getBytes());

httpGet.setHeader(AUTHENKEY, BASICKEY + authenticationEncoding);

String responseContent = "";
try {
response = client.execute(httpGet);

HttpEntity entity = response.getEntity();

responseContent = EntityUtils.toString(entity, "UTF-8");

} catch (IOException e) {
LOG.error(e.toString());
} finally {
if (response != null) {
try {
response.close();
} catch (IOException e) {
LOG.error(e.toString());
}
}

if (client != null) {
try {
client.close();
} catch (IOException e) {
LOG.error(e.toString());
}
}
}

return responseContent;
}

}