Oracle PL/SQL调用Fedex API遇乱码：含residential字段返回异常字符

• 问题现象：使用Fedex API查询运费时，当请求JSON中包含"residential": true字段，Oracle PL/SQL获取的响应出现大量乱码（示例：¿ m¿QO¿0¿¿> :¿ ¿¿¿¿P¿@¿¿E]¿}w¿¿o¿¿¿~w¿¿¿I¿+¿\q2'3¿¿¿y¿S6¿¿¿uz,Co¿¿¿¿&+N. j¿¿!¿G&[J¿uR¿¿¿¿¿¿¿¿¿t<^¿iA¿1l7BKf¿¿¿[!¿{6¿ J¿¿¿L+¿¿¿¿a¿hp¿¿¿'¿¿¿O¿¿¿w¿¿¿¿¿¿'¿¿U/,¿]w¿¿¿Z!¿/a¿¿?¿9¿ ¿¿!¿< ）；移除该字段后可获得正常JSON响应，但使用POSTMAN提交相同含该字段的请求却能得到有效响应。

• 提交的JSON请求数据：

{
    "accountNumber": {
        "value": "24839999509"
    },
    "requestedShipment": {
        "shipper": {
            "address": {
                "postalCode": 90210,
                "countryCode": "US"
            }
        },
        "recipient": {
            "address": {
                "residential": true,
                "postalCode": "23228-3019",
                "countryCode": "US"
            }
        },
        "pickupType": "USE_SCHEDULED_PICKUP",
        "serviceType": "FEDEX_GROUND",
        "rateRequestType": [
            "ACCOUNT",
            "LIST"
        ],
        "requestedPackageLineItems": [
            {
                "groupPackageCount": 1,
                "weight": {
                    "units": "LB",
                    "value": 6.5
                }
            }
        ]
    }
}

内容的提问来源于stack exchange，提问作者Justin