本文主要参考：https://www.cnblogs.com/xiaocandou/p/7991927.html
应用在获取 token 时，可以向 api 管理平台发起一个 HTTP POST 请求，内容如下：
• 请求地址: https://****.com/token
• 请求内容: grant_type=client_credentials
• 请求 Content-type: application/x-www-form-urlencoded
• 身份验证: Basic Auth，用户名为 Consumer ID，密码为 Consumer Key
@Override
public String reFreshToken(ParkBean park)
{
String token="";//token有效期为24小时
String coscoUrl=WcPropertyUtil.getInstance().getValue("coscoUrl");//https://***.com:8443
String[] split = coscoUrl.split(":");
// System.out.println(split[0] +" " +split[1].substring(2,split[1].length())+" "+split[2]);
//HttpHost target = new HttpHost("***.com", 8443,"https");
//分解出域名及端口和https
HttpHost target = new HttpHost(split[1].substring(2,split[1].length()), Integer.valueOf(split[2]),split[0]);
CredentialsProvider credsProvider = new BasicCredentialsProvider();
String user=park.getJrdm();//"LcXLUfRXv49ZZlu99jX7fsHafCAa";
String password= park.getKeypwd() ;//"Pnf269RTrdydqUhqe5nGjGtLj_Ma";
credsProvider.setCredentials(
new AuthScope(target.getHostName(), target.getPort()),
new UsernamePasswordCredentials(user, password));
CloseableHttpClient httpclient = HttpClients.custom()
.setDefaultCredentialsProvider(credsProvider).build();
try {
// Create AuthCache instance
AuthCache authCache = new BasicAuthCache();
// Generate BASIC scheme object and add it to the local
// auth cache
BasicScheme basicAuth = new BasicScheme();
authCache.put(target, basicAuth);
// Add AuthCache to the execution context
HttpClientContext localContext = HttpClientContext.create();
localContext.setAuthCache(authCache);
//https://***.com:8443/api/token
HttpPost httppost = new HttpPost(coscoUrl+"/api/token");
HttpEntity reqEntity = null;
JSONObject json = new JSONObject();
json.put("grant_type", "client_credentials");
List<NameValuePair> params =toCharge(json);
if(null!=params && !params.isEmpty())reqEntity = new UrlEncodedFormEntity(params, "UTF-8");
httppost.setEntity(reqEntity);
System.out.println("Executing request " + httppost.getRequestLine() + " to target " + target);
CloseableHttpResponse response = httpclient.execute(target, httppost, localContext);
try
{
HttpEntity entity = response.getEntity();
if (entity != null) {
String result = EntityUtils.toString(entity, encoding);
log.debug("***返回值***："+result);
JSONObject jsonObject = JSONObject.fromObject(result);
//{"access_token":"eef0908c-a167-3148-b9dc-2318ecc6b22c","scope":"am_application_scope default","token_type":"Bearer","expires_in":3600}
}
}
finally {
response.close();
}
}catch(Exception e)
{
log.debug("获取token失败 "+e.getMessage());
}finally {
if(httpclient!=null)
{
try {
httpclient.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return token;
}
public static List<NameValuePair> toCharge( JSONObject params) {
List<NameValuePair> listParam = new ArrayList<NameValuePair>();
if(params!=null&¶ms.size()>0)
{
for(Iterator it = params.keySet().iterator();it.hasNext();){ ////这个返回key集合的对象
String key = (String) it.next();
if(params.get(key)!=null){
listParam.add(new BasicNameValuePair(key, String.valueOf(params.get(key))));
}
}
}
return listParam;
}