Okhttp去除请求头user-agent-阿里云开发者社区

Okhttp去除请求头user-agent

2017-12-07 1376

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现象说明

用OKhttp框架请求http请求的时候会把user-agent带上；然而有些时候我们需要把请求头里面的user-agent去掉；

客户端程序：

    private static final String BASE_URL = "http://192.168.253.200:8080/Chapter/";
    public static void testHeaders() {
    HttpClient httpClient = new HttpClient.Builder(BASE_URL).isDebug(false)
            .add("header", "12345")
            .header("master", "china")
            .connectTimeout(5000)
            .readTimeout(5000)
            .build();
    httpClient.Api().send(new HttpClient.Builder().url("postParam")
            .add("header", "123459")
            .add("master", "usa")
            .add("token", "388298a0c89f4a38b2fed4cd4123d441")
            .method(Method.POST)
            .build(), new ResultSubscriber<>(new ResultListener<Object>() {

                @Override
                public void onResponse(Object t) {
                    System.out.println(t);

                }
            }));
}

返回结果：

{
"headers":{
    "content-length":"76",
    "host":"192.168.253.200:8080",
    "client":"Android Client",
    "content-type":"application/x-www-form-urlencoded",
    "connection":"Keep-Alive",
    "accept-encoding":"gzip",
    "master":"china",
    "user-agent":"okhttp/3.4.1"
},
"header":"123459",
"master":"usa",
"token":"388298a0c89f4a38b2fed4cd4123d441"
}

你会发现： “user-agent”:”okhttp/3.4.1” 这是由于okhttp内置拦截器BridgeInterceptor默认添加的。我们需要借助网络拦截器来重新拦截请求头；

解决方法：

利用拦截器来实现对user-agent删除

public class LogInterceptor implements Interceptor {

private HttpClient builder;

@Override
public Response intercept(Chain chain) throws IOException {
      Request request = chain.request();
      request =request.newBuilder().removeHeader("User-Agent").build();

       Response response = chain.proceed(request);
       okhttp3.MediaType mediaType = response.body().contentType();
       String content = response.body().string();
       return response.newBuilder()
            .body(okhttp3.ResponseBody.create(mediaType, content))
            .build();

然后利用网络拦截器来设置自定义的拦截器LogInterceptor ：

Builder okBuilder = new OkHttpClient.Builder()
            .connectTimeout(mbuilder.getConnectTimeout(), TimeUnit.SECONDS)
            .readTimeout(mbuilder.getReadTimeout(), TimeUnit.SECONDS)
            .writeTimeout(mbuilder.getWriteTimeout(), TimeUnit.SECONDS)
            .sslSocketFactory(OkhttpUtils.createSSLSocketFactory(), new OkhttpUtils. TrustAllCerts())// 信任所有证书
            .hostnameVerifier(new OkhttpUtils.TrustAllHostnameVerifier());

LogInterceptor logInterceptor = new LogInterceptor();
    logInterceptor.setBuilder(mbuilder);
    //okBuilder.addInterceptor(logInterceptor);//应用拦截器
    okBuilder.addNetworkInterceptor(logInterceptor);//网络拦截器

最后重新发送网络请求：

{
"headers":{
    "content-length":"63",
    "host":"192.168.253.200:8080",
    "client":"Android Client",
    "content-type":"application/x-www-form-urlencoded",
    "connection":"Keep-Alive",
    "accept-encoding":"gzip",
    "master":"china"
},
"header":"123459",
"master":"usa",
"token":"388298a0c89f4a38b2fed4cd4123d441"
}

说明：接口postParam是返回请求所有参数和请求头信息。代码就不展示出来了。