sdk使用方式(拉取 2.0.0 版本)：

1. 命令行：

1.1 $ git clone https://devops.aishu.cn/AISHUDevOps/AnyRobot/_git/DE_TelemetryJava -b 2.0.0

1.2 $ mvn clean install

2. 在pom.xml里添加：

<dependency>
    <groupId>com.eisoo</groupId>
    <artifactId>SamplerLogger</artifactId>
    <version>2.0.0</version>
</dependency>

3. 使用代码

//1.字符串日志：
public void testString(){
    Logger logger = LoggerFactory.getLogger("test");  //生成日志实例
    SamplerLogConfig.setLevel(Level.TRACE);                 //（可选）配置系统日志等级，默认是DEBUG
    logger.trace("hello world");
}
//可以看见打印信息

//2.在body添加自定义类日志：
//测试用的自定义类:Animal
public class Animal {
    private String name;
    private Integer age;

    public Animal() {
    }

    public Animal(String name, Integer age) {
        this.name = name;
        this.age = age;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

//2.1测试给Body添加Animal类的实例
public void testBody() {
    final Logger logger = LoggerFactory.getLogger("test");  //生成日志实例
    //Body: Animal实例
    final Animal animal = new Animal();
    animal.setName("little cat");
    animal.setAge(2);

    final Body body = new Body();
    body.setType("animal");
    body.setField(animal);

    logger.info(body);
}


//2.2测试给Attributes添加Animal类的实例
public void testAttributes() {
    final Logger logger = LoggerFactory.getLogger(this.getClass());  //生成日志实例

    //Attributes: Animal实例
    final Animal animal = new Animal("little cat", 2);

    final Attributes attributes = new Attributes();
    attributes.setType("animalType");
    attributes.setField(animal);

    logger.info("bodyAbc", attributes);
}


//3.当使用trace时，应当把SpanContext传入log，以便log能获得相应的TraceId和SpanId
public void testTraceIdAndSpanId() {
    final Logger logger = LoggerFactory.getLogger(this.getClass());  //生成日志实例

    Resource serviceNameResource =
            Resource.create(io.opentelemetry.api.common.Attributes.of(ResourceAttributes.SERVICE_NAME, "otel-jaeger-example"));

    // Set to process the spans by the Jaeger Exporter
    SdkTracerProvider tracerProvider =
            SdkTracerProvider.builder()
                    .addSpanProcessor(SimpleSpanProcessor.create(new LoggingSpanExporter()))
                    .setResource(Resource.getDefault().merge(serviceNameResource))
                    .build();
    OpenTelemetrySdk openTelemetry =
            OpenTelemetrySdk.builder().setTracerProvider(tracerProvider).build();

    // it's always a good idea to shut down the SDK cleanly at JVM exit.
    Runtime.getRuntime().addShutdownHook(new Thread(tracerProvider::close));
    final Tracer tracer = openTelemetry.getTracer("io.opentelemetry.example.JaegerExample");
    Span span = tracer.spanBuilder("Start my wonderful use case").startSpan();
    span.addEvent("Event 0");
    final String message = "using existed traceId and spanId";

    logger.info(message, span.getSpanContext());
    span.end();

}