OkHttp3超时设置

已经不能在 OkHttp3中使用的方法

为了容错和更好的用户体验，必须为OkHttp设置超时。

上网找了半天，只找到下面的代码。注意它们不能在 OkHttp3中使用

public ConfigureTimeouts() throws Exception {client = new OkHttpClient();client.setConnectTimeout(10, TimeUnit.SECONDS);client.setWriteTimeout(10, TimeUnit.SECONDS);client.setReadTimeout(30, TimeUnit.SECONDS);
}

以上代码中的方法setConnectTimeout，在OkHttp3中根本就不存在。

OkHttp3中设置超时的方法

上官网查资料，找到了新的方法

见网址：http://square.github.io/okhttp/3.x/okhttp/

Method Detail

connectTimeout

public OkHttpClient.Builder connectTimeout(long timeout,
TimeUnit unit)

Sets the default connect timeout for new connections. A value of 0 means no timeout, otherwise values must be between 1 and Integer.MAX_VALUE when converted to milliseconds.

readTimeout

public OkHttpClient.Builder readTimeout(long timeout,
TimeUnit unit)

Sets the default read timeout for new connections. A value of 0 means no timeout, otherwise values must be between 1 and Integer.MAX_VALUE when converted to milliseconds.

writeTimeout

public OkHttpClient.Builder writeTimeout(long timeout,
TimeUnit unit)

Sets the default write timeout for new connections. A value of 0 means no timeout, otherwise values must be between 1 and Integer.MAX_VALUE when converted to milliseconds.

从上面可以看到设置超时移到了OkHttpClient.Builder中，所以最新的设置超时的代码如下：

    public WebApi(){client = new OkHttpClient.Builder().connectTimeout(10, TimeUnit.SECONDS).readTimeout(20, TimeUnit.SECONDS).build();}

捕获OkHttp3超时

然后捕获异常，加以处理。

    public void GetServersList(IServersListEvent serversListEvent) {this.serversListEvent = serversListEvent;serversLoadTimes = 0;Request request = new Request.Builder().url(serversListUrl).build();client.newCall(request).enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {if(e.getCause().equals(SocketTimeoutException.class) && serversLoadTimes<maxLoadTimes)//如果超时并未超过指定次数，则重新连接{serversLoadTimes++;client.newCall(call.request()).enqueue(this);}else {e.printStackTrace();WebApi.this.serversListEvent.getServers(null);}}@Overridepublic void onResponse(Call call, Response response) throws IOException {String html = new String(response.body().bytes(), "big5");Matcher m = serversListPattern.matcher(html);ServersList serverList = new ServersList();while (m.find()){serverList.add(new ServerInfo(m.group(1), m.group(2)));}Matcher mc1 = selectServerCodePattern.matcher(html);Matcher mc2 = selectCityCodePattern.matcher(html);if(mc1.find())serverList.selectServerCode=mc1.group(1);if(mc2.find())serverList.selectCityCode=mc2.group(1);WebApi.this.serversListEvent.getServers(serverList);}});}