对象<~>JSON字符串(1)

<dependency>

    <groupId>

        com.google.code.gson

    </groupId>

     <artifactId>gson</artifactId>

</dependency>

com.google.gson.gson;

productScale2Add.setProductDetail(gson.toJson(productScale.getProductDetails()));

scaleDTO.setProductDetails(

gson.fromJson(domain.getProductDetail(),newTypeToken<List<ProductScaleDetailDTO>>() {}.getType()));