FastJosn

1.配置依赖

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<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.75</version>
</dependency>

2.使用javason方法

1.toJSON

2.toJSONString

3.toJavaObject