<dependency>

            <groupId>net.sf.json-lib</groupId>

            <artifactId>json-lib</artifactId>

            <version>2.4</version>

            <classifier>jdk15</classifier>

        </dependency>

 

MiniProgramPayDTO obj = new MiniProgramPayDTO();

        RequestPayment obj2 = new RequestPayment();

        obj.setPayData(obj2);

        JSONObject json = JSONObject.fromObject(obj);

 

        System.out.println(json);

    }

 

 

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