OkHttpClient “open” method missing in v2.0

问题

If you are upgrading from OkHttp library from 1.x to 2.x, glaringly the OkHttpClient method "open" is missing. The below code will NOT compile.

        OkHttpClient client = new OkHttpClient();
        HttpURLConnection conn = client.open(url);

回答1:

As per the official change log:

URLConnection support has moved to the okhttp-urlconnection module. If you're upgrading from 1.x, this change will impact you. You will need to add the okhttp-urlconnection module to your project and use the OkUrlFactory to create new instances of HttpURLConnection:

// OkHttp 1.x:
HttpURLConnection connection = client.open(url);

// OkHttp 2.x:
HttpURLConnection connection = new OkUrlFactory(client).open(url);

Just remember to add the dependency as below to the Gradle file.

compile 'com.squareup.okhttp:okhttp-urlconnection:2.5.0'

回答2:

As of OkHttp 3.x, OkUrlFactory had been marked deprecated, in favor of the new Request/Response style of calls, which is more flexible. Some info: https://publicobject.com/2015/12/15/okurlfactory-is-going-away/

So the new style is going to look more like:

OkHttpClient httpClient = new OkHttpClient()

Request request = Request.Builder()
    .url(url)
    .build()
Response response = httpClient.newCall(request).execute()

来源：https://stackoverflow.com/questions/33311409/okhttpclient-open-method-missing-in-v2-0