json序列化疑问

老师，请问这2在json序列化方式有什么区别？效果一样吗

有没有什么区别

方式一
 <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.12.3</version> 
    </dependency>	
ObjectMapper objectMapper = new ObjectMapper();	
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);	
String json = objectMapper.writeValueAsString(result);	
方式二
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.54</version>
</dependency>
String json = JSON.toJSONString(goods);