content: package com.alibaba.fastjson2.benchmark.jjb;
  
  import com.alibaba.fastjson2.JSON;
  import com.alibaba.fastjson2.JSONB;
  import com.alibaba.fastjson2.JSONReader;
  import com.alibaba.fastjson2.JSONWriter;
  import com.dslplatform.json.DslJson;
  import com.dslplatform.json.runtime.Settings;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.google.gson.Gson;
  import org.apache.commons.io.IOUtils;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.infra.Blackhole;
  import org.openjdk.jmh.runner.Runner;
  import org.openjdk.jmh.runner.RunnerException;
  import org.openjdk.jmh.runner.options.Options;
  import org.openjdk.jmh.runner.options.OptionsBuilder;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.nio.charset.StandardCharsets;
  import java.util.concurrent.TimeUnit;
  
  public class UsersWriteUTF8Bytes {
      static Users users;
      static final ObjectMapper mapper = new ObjectMapper();
      static final Gson gson = new Gson();
      static final DslJson<Object> dslJson = new DslJson<>(Settings.withRuntime().includeServiceLoader());
      static final ThreadLocal<ByteArrayOutputStream> bytesOutLocal = ThreadLocal.withInitial(() -> new ByteArrayOutputStream());
  
      static {
          try {
              InputStream is = UsersWriteUTF8Bytes.class.getClassLoader().getResourceAsStream("data/jjb/user.json");
              String str = IOUtils.toString(is, "UTF-8");
              users = JSONReader.of(str)
                      .read(Users.class);
          } catch (Throwable ex) {
              ex.printStackTrace();
          }
      }
  
      @Benchmark
      public void fastjson2(Blackhole bh) {
          bh.consume(JSON.toJSONBytes(users));
      }
  
      @Benchmark
      public void wast(Blackhole bh) {
          bh.consume(io.github.wycst.wast.json.JSON.toJsonBytes(users));
      }
  
      //    @Benchmark
      public void fastjson2_str(Blackhole bh) {
          bh.consume(JSON.toJSONString(users));
      }
  
      public void jsonb(Blackhole bh) {
          bh.consume(JSONB.toBytes(users));
      }
  
      public void jsonb_beanToArray(Blackhole bh) {
          bh.consume(JSONB.toBytes(users, JSONWriter.Feature.BeanToArray, JSONWriter.Feature.FieldBased));
      }
  
      @Benchmark
      public void dsljson(Blackhole bh) throws IOException {
          ByteArrayOutputStream bytesOut = bytesOutLocal.get();
          bytesOut.reset();
  
          dslJson.serialize(users, bytesOut);
          byte[] bytes = bytesOut.toByteArray();
          bh.consume(bytes);
      }
  
  //    @Benchmark
      public void jackson(Blackhole bh) throws Exception {
          bh.consume(mapper.writeValueAsBytes(users));
      }
  
  //    @Benchmark
      public void gson(Blackhole bh) throws Exception {
          bh.consume(gson
                  .toJson(users)
                  .getBytes(StandardCharsets.UTF_8)
          );
      }
  
      public static void main(String[] args) throws RunnerException {
          Options options = new OptionsBuilder()
                  .include(UsersWriteUTF8Bytes.class.getName())
                  .mode(Mode.Throughput)
                  .timeUnit(TimeUnit.MILLISECONDS)
                  .warmupIterations(3)
                  .forks(2)
                  .threads(16)
                  .build();
          new Runner(options).run();
      }
  }
  