Okhttp請求攔截器

1.新建攔截器，實現(xiàn)Interceptor接口

public class MyInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
      
    }
}

2.獲取Request對象

Request original = chain.request();

3.獲取碎连、修改HttpUrl對象

HttpUrl url = original.url();

//獲得url中key值為name的參數(shù)值
String name = url.queryParameter("name");
//添加參數(shù)
HttpUrl newUrl = url.newBuilder()
        .addQueryParameter("key","value")
        .build();

4.獲取灰羽、修改Body對象

//獲取、添加body參數(shù)
if (original.body() instanceof FormBody){
    FormBody oldBody = (FormBody) original.body();
    FormBody.Builder bodyBuilder = new FormBody.Builder();
    //添加參數(shù)
    bodyBuilder.add("key","value");
    for (int i = 0; i < oldBody.size(); i ++){
        String key = oldBody.encodedName(i);
        String value = oldBody.encodedValue(i);
    }
}

5.添加請求頭

//獲取破花、修改請求頭
Headers headers = original.headers();
Headers newHeader = headers.newBuilder()
        .add("X-Access-Token", MyApplication.getInstance().getToken())
        .build();
Request.Builder builder = original.newBuilder()
                .headers(newHeader);

6.修改Request對象

Request.Builder builder = original.newBuilder()
                .headers(newHeader);
Request request = builder.build();
Response response = chain.proceed(request);

完整攔截器代碼

public class MyInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        Request original = chain.request();

        HttpUrl url = original.url();

        //獲得url中key為name的參數(shù)值
        String name = url.queryParameter("key");

        //添加參數(shù)
        HttpUrl newUrl = url.newBuilder()
                .addQueryParameter("key","value")
                .build();

        //獲取谦趣、添加body參數(shù)
        if (original.body() instanceof FormBody){
            FormBody oldBody = (FormBody) original.body();
            FormBody.Builder bodyBuilder = new FormBody.Builder();
            //添加參數(shù)
            bodyBuilder.add("key","value");

            for (int i = 0; i < oldBody.size(); i ++){
                String key = oldBody.encodedName(i);
                String value = oldBody.encodedValue(i);
            }
        }

        //獲取、修改請求頭
        Headers headers = original.headers();
        Headers newHeader = headers.newBuilder()
                .add("X-Access-Token", MyApplication.getInstance().getToken())
                .build();


        Request.Builder builder = original.newBuilder()
                .headers(newHeader);

        Request request = builder.build();

        Response response = chain.proceed(request);

        return response;
    }
}