json与moshi格式化

Question

有没有人知道如何让moshi生成带缩进的多行json(在config.json的上下文中供人类使用),所以从:

{"max_additional_random_time_between_checks":180,"min_time_between_checks":60}

这样的事情:

{
   "max_additional_random_time_between_checks":180,
   "min_time_between_checks":60
}

我知道其他json-writer实现可以这样做 - 但我想在这里坚持moshi以保持一致性

Answer 1

如果你可以自己处理序列化对象,这应该可以解决问题:

import com.squareup.moshi.JsonWriter;
import com.squareup.moshi.Moshi;

import java.io.IOException;

import okio.Buffer;

public class MoshiPrettyPrintingTest {

    private static class Dude {
        public final String firstName = "Jeff";
        public final String lastName = "Lebowski";
    }

    public static void main(String[] args) throws IOException {

        final Moshi moshi = new Moshi.Builder().build();

        final Buffer buffer = new Buffer();
        final JsonWriter jsonWriter = JsonWriter.of(buffer);

        // This is the important part:
        // - by default this is `null`, resulting in no pretty printing
        // - setting it to some value, will indent each level with this String
        // NOTE: You should probably only use whitespace here...
        jsonWriter.setIndent("    ");

        moshi.adapter(Dude.class).toJson(jsonWriter, new Dude());

        final String json = buffer.readUtf8();

        System.out.println(json);
    }
}

这打印:

{
    "firstName": "Jeff",
    "lastName": "Lebowski"
} 

见prettyPrintObject()在这个测试文件和源代码BufferedSinkJsonWriter.

但是,如果你使用Moshi和Retrofit,我还没有弄清楚是否以及如何做到这一点.

Answer 2

现在，您可以.indent(" ")在适配器上使用method进行格式化。

 final Moshi moshi = new Moshi.Builder().build();
 String json = moshi.adapter(Dude.class).indent("  ").toJson(new Dude())