如何通过OkHttp将查询参数添加到HTTP GET请求？

Question

我使用的是最新的okhttp版本:okhttp-2.3.0.jar

如何在java中的okhttp中向GET请求添加查询参数？

我发现了一个关于android 的相关问题,但这里没有答案!

Answer 1

对于okhttp3:

private static final OkHttpClient client = new OkHttpClient().newBuilder()
    .connectTimeout(10, TimeUnit.SECONDS)
    .readTimeout(30, TimeUnit.SECONDS)
    .build();

public static void get(String url, Map<String,String>params, Callback responseCallback) {
    HttpUrl.Builder httpBuilder = HttpUrl.parse(url).newBuilder();
    if (params != null) {
       for(Map.Entry<String, String> param : params.entrySet()) {
           httpBuilder.addQueryParameter(param.getKey(),param.getValue());
       }
    }
    Request request = new Request.Builder().url(httpBuilder.build()).build();
    client.newCall(request).enqueue(responseCallback);
}

Answer 2

这是我的拦截器

    private static class AuthInterceptor implements Interceptor {

    private String mApiKey;

    public AuthInterceptor(String apiKey) {
        mApiKey = apiKey;
    }

    @Override
    public Response intercept(Chain chain) throws IOException {
        HttpUrl url = chain.request().httpUrl()
                .newBuilder()
                .addQueryParameter("api_key", mApiKey)
                .build();
        Request request = chain.request().newBuilder().url(url).build();
        return chain.proceed(request);
    }
}

Answer 3

正如在另一个答案中所提到的,okhttp v2.4提供了新功能,可以实现这一点.

见http://square.github.io/okhttp/2.x/okhttp/com/squareup/okhttp/HttpUrl.Builder.html#addQueryParameter-java.lang.String-java.lang.String-

对于当前版本的okhttp,这是不可能的,没有提供可以为您处理此问题的方法.

接下来最好的事情是使用自己包含的查询构建url字符串或URL对象(找到java.net.URL),并将其传递给okhttp的请求构建器.

如您所见,Request.Builder可以使用String或URL.

有关如何构建URL的示例可以在Java中组合URL或URI的惯用方法中找到？

Answer 4

我终于完成了我的代码,希望以下代码可以帮助你们.我首先使用构建URL

HttpUrl httpUrl = new HttpUrl.Builder()

然后传递URL以Request requesthttp希望它有所帮助.

public class NetActions {

    OkHttpClient client = new OkHttpClient();

    public String getStudentById(String code) throws IOException, NullPointerException {

        HttpUrl httpUrl = new HttpUrl.Builder()
                .scheme("https")
                .host("subdomain.apiweb.com")
                .addPathSegment("api")
                .addPathSegment("v1")
                .addPathSegment("students")
                .addPathSegment(code) // <- 8873 code passthru parameter on method
                .addQueryParameter("auth_token", "71x23768234hgjwqguygqew")
                // Each addPathSegment separated add a / symbol to the final url
                // finally my Full URL is: 
                // https://subdomain.apiweb.com/api/v1/students/8873?auth_token=71x23768234hgjwqguygqew
                .build();

        System.out.println(httpUrl.toString());

        Request requesthttp = new Request.Builder()
                .addHeader("accept", "application/json")
                .url(httpUrl) // <- Finally put httpUrl in here
                .build();

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

Answer 5

截至目前（okhttp 2.4），HttpUrl.Builder 现在具有方法 addQueryParameter 和 addEncodedQueryParameter。