Retrofit - URL 格式错误问题、支持 HTTP 与 HTTPS

URL 格式错误问题

1、演示

private static Retrofit getHttpRetrofit(String url) {

    // 日志拦截器
    HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
    httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

    OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient.Builder();
    okHttpClientBuilder.addInterceptor(httpLoggingInterceptor);
    OkHttpClient okHttpClient = okHttpClientBuilder.build();

    // 构建 Retrofit 对象
    return new Retrofit.Builder()
            .baseUrl(url)
            .client(okHttpClient)
            .addConverterFactory(ScalarsConverterFactory.create())
            .addConverterFactory(GsonConverterFactory.create()) // 解析实体类
            .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) // 结合 RxJava
            .build();
}

getHttpRetrofit("http://www.mytest.com:12345:12345");

# 输出结果

FATAL EXCEPTION: main
Process: com.my.retrofit, PID: 3818
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.my.retrofit/com.my.retrofit.MyTestActivity}: java.lang.IllegalArgumentException: Invalid URL port: "12345:12345"

2、处理策略

• 使用 try catch 包裹

try {
    getHttpRetrofit("http://www.mytest.com:12345:12345");
} catch (Exception e) {
    Log.e(TAG, "Retrofit 对象创建失败：" + e.getMessage());
}

# 输出结果

Retrofit 对象创建失败：Invalid URL port: "12345:12345"

---

支持 HTTP 与 HTTPS

1. 创建支持 HTTP 的 Retrofit 对象

private static Retrofit getHttpRetrofit(String url) {

    // 日志拦截器
    HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
    httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

    OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient.Builder();
    okHttpClientBuilder.addInterceptor(httpLoggingInterceptor);
    OkHttpClient okHttpClient = okHttpClientBuilder.build();

    // 构建 Retrofit 对象
    return new Retrofit.Builder()
            .baseUrl(url)
            .client(okHttpClient)
            .addConverterFactory(ScalarsConverterFactory.create())
            .addConverterFactory(GsonConverterFactory.create()) // 解析实体类
            .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) // 结合 RxJava
            .build();
}

2. 创建支持 HTTPS 的 Retrofit 对象（忽略证书验证）

private static Retrofit getHttpsRetrofit(String url) {

    // 日志拦截器
    HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
    httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

    OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient.Builder();
    okHttpClientBuilder.addInterceptor(httpLoggingInterceptor);

    TrustManager[] trustManagers = new TrustManager[]{
            new X509TrustManager() {
                @Override
                public void checkClientTrusted(X509Certificate[] chain, String authType) {
                }

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

                @Override
                public X509Certificate[] getAcceptedIssuers() {
                    return new X509Certificate[]{};
                }
            }
    };

    SSLContext sslContext = null;
    try {
        sslContext = SSLContext.getInstance("SSL");
        sslContext.init(null, trustManagers, new SecureRandom());
    } catch (NoSuchAlgorithmException | KeyManagementException e) {
        e.printStackTrace();
    }
    if (sslContext != null) {
        okHttpClientBuilder.sslSocketFactory(sslContext.getSocketFactory(), (X509TrustManager) trustManagers[0]);
        okHttpClientBuilder.hostnameVerifier(new HostnameVerifier() {
            @Override
            public boolean verify(String hostname, SSLSession session) {
                return true; // 不验证主机名
            }
        });
    }

    OkHttpClient okHttpClient = okHttpClientBuilder.build();

    // 构建 Retrofit 对象
    return new Retrofit.Builder()
            .baseUrl(url)
            .client(okHttpClient)
            .addConverterFactory(ScalarsConverterFactory.create())
            .addConverterFactory(GsonConverterFactory.create()) // 解析实体类
            .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) // 结合 RxJava
            .build();
}