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根据basic auth请求https获取token
对接第三方接口，给了接口文档，但是没有示例代码，postman一直可请求成功，java就是不行。百思不得其解，最后请求公司大神，得到一套秘籍。
第一步
第二步
Authorization：Bearer access_token。其中，Bearer为固定字符串，后面包含一个空格，access_token表示实际获取到的token。
第三步：写出代码。
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.spcp.platform.common.util.StringUtil;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.springframework.http.*;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;import javax.net.ssl.SSLContext;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;public String getToken() {String token = "";try {TrustStrategy acceptingTrustStrategy = (x509Certificates, authType) -> true;SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, acceptingTrustStrategy).build();SSLConnectionSocketFactory sslFactory = new SSLConnectionSocketFactory(sslContext, new NoopHostnameVerifier());CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(sslFactory).build();HttpComponentsClientHttpRequestFactory factory =new HttpComponentsClientHttpRequestFactory();factory.setConnectTimeout(3600000);factory.setReadTimeout(3600000);factory.setHttpClient(httpClient);RestTemplate restTemplate = new RestTemplate(factory);// 要请求的URLString requestUrl = "https://110:39/oauth/token?grant_type=client_credentials";// header根据实际情况设置，没有就空着MultiValueMap<String, String> params = new HttpHeaders();params.add("grant_type", "client_credentials-aqjc");HttpHeaders headers = new HttpHeaders();// 加密后的用户名和密码，这个替换成加密后的headers.add("Authorization", "Basic d2666666666666==");//headers.add("Content-Type", "application/x-www-form-urlencoded");HttpEntity<?> requestEntity = new HttpEntity<>(params, headers);// 发送请求并接收响应ResponseEntity<String> response = restTemplate.exchange(requestUrl, HttpMethod.POST, requestEntity, String.class);// 获取响应体String responseBody = response.getBody();// 输出响应体内容Map<String, String> resMap = new ObjectMapper().readValue(responseBody, new TypeReference<Map<String, String>>() {});token = resMap.get("access_token");} catch (Exception e) {e.printStackTrace();}return token;}
总结：其实挺难的，尤其https认证。