我想使用Fleet Telematics API实施道路限制。但是每次我尝试使用文档中的示例时，都会得到400条响应。这是因为我发送的参数不正确还是仅适用于付费计划？我目前是免费会员。
HERE示例表明overlay_spec需要作为JSON字符串参数发送。可能那是我的问题。谁能帮助我构造适当的curl命令？
这是我现在正在使用的：
curl -X GET \
'http://cre.api.here.com/2/overlays/upload.json?app_id=MY_APP_ID&app_code=MY_APP_CODE&map_name=OVERLAYNA&overlay_spec=%5B%0A%20%20%7B%20%22op%22%3A%22override%22%2C%0A%20%20%22shape%22%3A%5B%5B50.10765%2C8.68774%5D%2C%5B50.10914%2C8.68771%5D%5D%2C%0A%20%20%22layer%22%3A%22LINK_ATTRIBUTE_FCN%22%2C%0A%20%20%22data%22%3A%7B%22VEHICLE_TYPES%22%3A%220%22%7D%0A%20%20%7D%2C%0A%20%20%7B%20%22op%22%3A%22create%22%2C%0A%20%20%22shape%22%3A%5B%5B50.10937%2C8.68422%5D%2C%5B50.10807%2C8.68525%5D%2C%5B50.10737%2C8.68387%5D%5D%2C%0A%20%20%22data%22%3A%7B%22NAMES%22%3A%22ENGBNDemo%20Road%22%7D%0A%20%20%7D%2C%0A%20%20%7B%20%22op%22%3A%22override%22%2C%0A%20%20%22shape%22%3A%5B%5B50.10937%2C8.68422%5D%2C%5B50.10807%2C8.68525%5D%2C%5B50.10737%2C8.68387%5D%5D%2C%0A%20%20%22layer%22%3A%22TRUCK_RESTR_FCN%22%2C%0A%20%20%22data%22%3A%7B%22VEHICLE_TYPES%22%3A%22truck%22%2C%20%22WEIGHT_RESTRICTION%22%3A%223300%22%7D%0A%20%20%7D%0A%5D'
答案 0 :(得分：1)
请重试您的请求。看起来像是暂时停机。对于您的上述要求，我们尝试并能够获得以下答复。
请求：
LinkedList响应：
http://cre.api.here.com/2/overlays/upload.json?map_name=OVERLAYNA&overlay_spec=%5B%7B%22op%22:%22override%22,%22shape%22:%5B%5B50.10765,8.68774%5D,%5B50.10914,8.68771%5D%5D,%22layer%22:%22LINK_ATTRIBUTE_FCN%22,%22data%22:%7B%22VEHICLE_TYPES%22:%220%22%7D%7D%5D&storage=readonly