Token失效,请求接口失败,需要重新获取新Token,重新访问接口。
通过Okhttp访问网络,添加拦截器来解决此问题
创建一个拦截器TokenInterceptor
public class TokenInterceptor implements Interceptor {
private static final String TAG = "TokenInterceptor";
private String url = "xxx";
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
Response response = chain.proceed(request);
Log.d(TAG, "response.code=" + response.code());
//判断token是否过期,与后台小伙伴协商,或者通过判断新旧token是否一致
if (isTokenExpired(response)) {
Log.d(TAG, "自动刷新Token,然后重新请求数据");
//同步请求方式,获取最新的Token
String newToken = getNewToken();
Log.e(TAG, "intercept:新的请求头 "+newToken );
//使用新的Token,创建新的请求
Request newRequest = chain.request()
.newBuilder()
.header("Authorization", newToken)
.build();
//重新请求
return chain.proceed(newRequest);
}
return response;
}
//判断Token是否过期,我这里是因为Token过期会返回403,可以通过判断新旧token是否一致
private boolean isTokenExpired(Response response) {
if (response.code() == 403) {
return true;
}
return false;
}
//用同步方法获取新的Token
private String getNewToken() throws IOException {
// 通过获取token的接口,同步请求接口
String newToken = "";
Map<String, String> map = new ConcurrentHashMap<>();
map.put("xxx", xxx);
map.put("xxx", xxx);
// GsonUtil只是有个把Map变成String的工具类
String params = GsonUtil.mapToJson(map);
RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), params);
OkHttpClient client = new OkHttpClient.Builder().readTimeout(10, TimeUnit.SECONDS).build();
Request request = new Request.Builder().url(MyDatas.path + url)
.post(requestBody).build();
Call call = client.newCall(request);
try {
Response response = call.execute();
//坑人点,response.body().string()只能调用一次,否则会报java.lang.IllegalStateException: closed
//第一次调用.body().string(),OkHttp就会默默地释放资源,再次调用就会抛出异常,有兴趣的可以去看源码
String relut = response.body().string();
Log.e(TAG, "getNewToken: " +relut);
JSONObject jsonObject = new JSONObject(relut);
Integer code = jsonObject.getInt("code");
if (code != 10000) {
Object Data = jsonObject.get("data");
} else {
Gson gson = new Gson();
TokenBean bean = gson.fromJson(relut, TokenBean.class);
newToken = bean.getData().getAuthorization();
MyDatas.token = bean.getData().getAuthorization();
}
} catch (Exception e) {
e.printStackTrace();
}
return newToken;
}
}
okHttpClient = new OkHttpClient.Builder()
.connectTimeout(60 , TimeUnit.SECONDS)
.readTimeout(60 , TimeUnit.SECONDS)
.writeTimeout(60 , TimeUnit.SECONDS)
.addInterceptor(new TokenInterceptor())
.build();
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