Async Http Client

转载

异步http有几个选择：

• apache的库
• com.ning
• ok http

com.ning的使用更广泛.

<dependency>
    <groupId>com.ning</groupId>
    <artifactId>async-http-client</artifactId>
    <version>1.9.32</version>
</dependency>

用法1, Future:

import com.ning.http.client.*;
import java.util.concurrent.Future;

AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
Future<Response> f = asyncHttpClient.prepareGet("http://www.ning.com/").execute();
Response r = f.get();

用法2, 回调函数:

import com.ning.http.client.*;
import java.util.concurrent.Future;

AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
asyncHttpClient.prepareGet("http://www.ning.com/").execute(
     new AsyncCompletionHandler<Response>(){

    @Override
    public Response onCompleted(Response response) throws Exception{
        // Do something with the Response
        // ...
        return response;
    }

    @Override
    public void onThrowable(Throwable t){
        // Something wrong happened.
    }
});