javafx-请求篇

OkHttpClient#

基本使用步骤如下

• 构建客户端对象OkHttpClient
• 构建请求Request
• 生成Call对象
• Call发起请求（同步/异步）

import java.io.IOException;
import okhttp3.Call;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
public class HttpRequest {
    public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
    OkHttpClient client = new OkHttpClient();
    public String get(String url) throws IOException {
        Request request = new Request.Builder()
                .url(url)
                .build();

        Response response = client.newCall(request).execute();
        return response.body().string();
    }

    public String post(String url, String json) throws IOException {
        RequestBody body = RequestBody.create(JSON, json);
        Request request = new Request.Builder()
                .url(url)
                .post(body)
                .build();
    /*  Call call = client.newCall(request);
      call.*/

        Response response = client.newCall(request).execute();
        return response.body().string();
    }

    public static void main(String[] args) throws IOException {
        HttpRequest request = new HttpRequest();
        System.out.println(request.get("http://www.baidu.com"));
    }

}

加上忽略https证书验证，代码如下：#

import okhttp3.*;

import javax.net.ssl.*;
import java.io.IOException;

public class HttpRequest {
    public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");

    //    static OkHttpClient client = new OkHttpClient();

    //下面是跳过https网站证书验证的，我直接复制的
    public static OkHttpClient getUnsafeOkHttpClient() {
        try {
            final TrustManager[] trustAllCerts = new TrustManager[]{
                    new X509TrustManager() {
                        @Override
                        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
                        }

                        @Override
                        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) {
                        }

                        @Override
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            return new java.security.cert.X509Certificate[]{};
                        }
                    }
            };

            final SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
            final javax.net.ssl.SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
            OkHttpClient.Builder builder = new OkHttpClient.Builder();
            builder.sslSocketFactory(sslSocketFactory);

            builder.hostnameVerifier(new HostnameVerifier() {
                @Override
                public boolean verify(String hostname, SSLSession session) {
                    return true;
                }
            });

            return builder.build();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }

    public String get(String url) throws IOException {
        Request request = new Request.Builder()
                .url(url)
                .build();
        OkHttpClient client = getUnsafeOkHttpClient();
        Response response = client.newCall(request).execute();
        return response.body().string();
    }

    public String post(String url, String json) throws IOException {
        RequestBody body = RequestBody.create(JSON, json);
        Request request = new Request.Builder()
                .url(url)
                .post(body)
                .build();

        OkHttpClient client = getUnsafeOkHttpClient();
        Response response = client.newCall(request).execute();
        return response.body().string();
    }


}