Python/Bottle/MongoDB：不支持的响应类型：

发布于 2025-01-07 09:42:32 字数 507 浏览 5 评论 0 原文

@route('/locations', method='GET')
def get_location():
    entity = db['locations'].find({'coordinate2d': {'$near': [37.871593, -122.272747]}}).limit(3)
    if not entity:
        abort(404, 'No nearby locations')
    return entity

上述代码部分的响应是：

Error 500: Internal Server Error

Sorry, the requested URL 'http://localhost:8080/locations' caused an error:

Unsupported response type: <type 'dict'>

如何从 mongo 获取信息作为 Bottle 可以返回 JSON 的类型？

原文

@route('/locations', method='GET')
def get_location():
    entity = db['locations'].find({'coordinate2d': {'$near': [37.871593, -122.272747]}}).limit(3)
    if not entity:
        abort(404, 'No nearby locations')
    return entity

The response for the above portion of code is:

Error 500: Internal Server Error

Sorry, the requested URL 'http://localhost:8080/locations' caused an error:

Unsupported response type: <type 'dict'>

How can I grab that information from mongo as a type Bottle can return as JSON?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

最近可好 2025-01-14 09:42:32

完整的解决方案是将数据库游标转换为列表、手动设置响应类型+自定义编码返回值的组合

@route('/locations/:lat/:lng', method='GET')
def get_location(lat,lng):
    response.content_type = 'application/json'
    objdb = db.locations.find({'coordinate2d': {'$near': [lat,lng]}}, {'coordinate2d':bool(1)}).skip(0).limit(3)
    entries = [entry for entry in objdb]
    return MongoEncoder().encode(entries)

在我的例子中，产生以下结果：

[
    {
        "_id": "4f4201bb7e720d1dca000005",
        "coordinate2d": [
            33.02032100000006,
            -117.19483074631853
        ]
    },
    {
        "_id": "4f4201587e720d1dca000002",
        "coordinate2d": [
            33.158092999999994,
            -117.350594
        ]
    },
    {
        "_id": "4f42018b7e720d1dca000003",
        "coordinate2d": [
            33.195870000000006,
            -117.379483
        ]
    }
]

The complete solution was a combination of transforming the db cursor to a list, manually setting the response type + custom encoding the return value

@route('/locations/:lat/:lng', method='GET')
def get_location(lat,lng):
    response.content_type = 'application/json'
    objdb = db.locations.find({'coordinate2d': {'$near': [lat,lng]}}, {'coordinate2d':bool(1)}).skip(0).limit(3)
    entries = [entry for entry in objdb]
    return MongoEncoder().encode(entries)

In my case, produces this:

[
    {
        "_id": "4f4201bb7e720d1dca000005",
        "coordinate2d": [
            33.02032100000006,
            -117.19483074631853
        ]
    },
    {
        "_id": "4f4201587e720d1dca000002",
        "coordinate2d": [
            33.158092999999994,
            -117.350594
        ]
    },
    {
        "_id": "4f42018b7e720d1dca000003",
        "coordinate2d": [
            33.195870000000006,
            -117.379483
        ]
    }
]

回复收藏 0 原文

心清如水 2025-01-14 09:42:32

当我尝试返回 python 列表时出现此错误。我以为它会转换为 JSON，但事实并非如此。它到达了 Bottle.py 中处理可迭代对象的行，并找到了列表中的第一个字典并抛出了上面的错误。

为了解决这个问题，我只是将列表嵌入到字典中。

return {'response': []}

I got this error when I was trying to return a python list. I assumed it would translate into JSON, but it didn't. It made it to the line in bottle.py where it would handle iterables and found the first dict in the list and threw the error above.

To get around this, I simply embedded my list inside a dict.