将 Retrofit 字符串值转换为日期 object

Question

I want to convert Retrofit String value to a Date object.

For example, I have data like this:

date: "20.04.1995"

And this is my POJO class.

public class LocationItem {

    @SerializedName("time")
    @Expose
    public String time;

    public long getTime() {
        return dateFormatter(time);
    }

    public void setTime(String time) {
        this.time = time;
    }
}

I want to save it in my POJO class as Date type instead of String. Currently I'm converting inside the get() method. However, instead of doing this every time, I want to do fetch the data, convert it to Date and save it to POJO class. What I want:

public class LocationItem {

    @SerializedName("time")
    @Expose
    public Date time;

    public Date getTime() {
        return time;
    }

    public void setTime(Date time) {
        this.time = time;
    }
}

This is my Retrofit service;

public static Retrofit createClient() {
        String baseUrl;

        ConnectionSpec spec = new ConnectionSpec.Builder(ConnectionSpec.COMPATIBLE_TLS)
                .supportsTlsExtensions(true)
                .tlsVersions(TlsVersion.TLS_1_2, TlsVersion.TLS_1_1, TlsVersion.TLS_1_0)
                .cipherSuites(
                        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
                        CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
                        CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
                        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
                        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
                        CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
                        CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
                        CipherSuite.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,
                        CipherSuite.TLS_ECDHE_RSA_WITH_RC4_128_SHA,
                        CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
                        CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
                        CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA)
                .build();


        OkHttpClient.Builder httpClientBuilder = new OkHttpClient.Builder()
                .addInterceptor(NetworkInterceptor.create())
                .addInterceptor(RequestInterceptor.create())
                .connectionSpecs(Collections.singletonList(spec))
                .readTimeout(apiTimeout, TimeUnit.SECONDS)
                .connectTimeout(apiTimeout, TimeUnit.SECONDS)
                .writeTimeout(apiTimeout, TimeUnit.SECONDS);

        if (BuildConfig.DEBUG) {
            HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
            httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BASIC);
            httpClientBuilder.addInterceptor(httpLoggingInterceptor);
        }

        vHttpClient = httpClientBuilder.build();

        Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();

        return new Retrofit.Builder()
                .baseUrl(baseUrl)
                .addConverterFactory(GsonConverterFactory.create(gson))
                .client(vHttpClient)
                .build();
    }

What should I do? Thanks for your help!

Answer 1

You should create an instance of Gson, and set your time format via setDateFormat builder pattern. Afterwards pass it to GsonConverterFactory.create() as argument.

Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ss").create();

Retrofit retrofitAdapter = new Retrofit.Builder()
.baseUrl(API_BASE_URL)
.addConverterFactory(GsonConverterFactory.create(gson))
.build();