小编qg_*_*137的帖子

我在WEB-INF/classes目录中创建了一个应用程序Context.xml .我已经<!DOCTYPE>在xml中添加了.我收到以下错误:

URI未注册(设置|语言和框架|架构和DTD)

您可以在下面看到快照:

xml如下:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">  // -> there comes the issue
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

</beans>

在提出问题之前,我在StackOverflow上搜索了一个类似的问题:

文件被加载错误的编码:android studio中的'UTF-8'

但它没有在那里给出明确的答案.

我的问题是该项目是从网络下载的,它是一个eclipse项目,我用IntelliJ IDEA打开它,并得到这个问题:

我使用 python-socketio 创建一个项目。

以下是一个请求：

127.0.0.1 - - [22/Feb/2018 05:41:17] "GET /socket.io/?
EIO=3&transport=polling&t=M6y1xWT&sid=446d37ddf93f471888abf02017a5a576 HTTP/1.1" 
200 269 0.000470

我想知道params的含义。

现在我知道transport（传输类型），sid（会话ID），但我不知道EIO那里t。

在 PyCharm 中，自动补全有f和m。

有什么意义f和m？

请问f手段的功能？

当我在IntelliJ IDEA中运行tomcat时,我得到以下错误,我搜索了StackOverflow,找不到我的异常.

[2017-04-06 10:57:30,875]神器elecMaven探索:神器正在部署,请稍候...
[2017-04-06 10:57:30,888]神器elecMaven探索:神器部署期间出错.有关详细信息,请参阅服
[2017-04-06 10:57:30,889]神器elecMaven探索:com.intellij.javaee.oss.admin.jmx.JmxAdminException:com.intellij.execution.ExecutionException:/ Users/luowensheng/Desktop/TestIOS/itheima1128elecMaven /未找到Web模块的类/工件/ elecMaven_explored.

但我的神器确实存在:

那么,问题在哪里？

我试过了:

将以下代码添加到web.xml:

<context-param>
    <param-name>kmRootKey</param-name>
    <param-value>km.root</param-value>
</context-param>

但似乎没用.

在我的Django项目中,当我查询数据时,我得到以下错误:

django.db.utils.OperationalError:(1052,"字段列表中的列'名称'含糊不清")

使用:

http://localhost:8000/api/physicalserver/list/?switchesport__bandwidth=10

但如果我使用:

http://localhost:8000/api/physicalserver/list/?switches__id=xxx

它会工作正常.

我的ListAPIView代码:

class PhysicalServerListAPIView(ListAPIView):
    serializer_class = PhysicalServerListSerializer
    permission_classes = [AllowAny]
    pagination_class = CommonPagination
    def get_queryset(self):
        query_params = self.request.query_params
        filters = {'{}__contains'.format(key): value
               for key, value in query_params.items()
               }
        qs = PhysicalServer.objects.filter(**filters)
        return qs.extra(select={'length':'Length(name)'}).order_by('length', 'name')

我的序列化代码:

class PhysicalServerListSerializer(ModelSerializer):
    bandwidth = serializers.SerializerMethodField()

    class Meta:
        model = PhysicalServer
        fields = "__all__"
        depth = 1

    def get_bandwidth(self, obj):
        return obj.switchesport.bandwidth

我的物理服务器模型:

class PhysicalServer(models.Model):         
    name = models.CharField(max_length=32)

    switches = models.ForeignKey(to=Switches, on_delete=models.DO_NOTHING)
    physical_server_model = models.ForeignKey(to=PhysicalServerModel, null=True, on_delete=models.DO_NOTHING)
    switchesport = models.OneToOneField(to=SwitchesPort, …

I have a util method in Python Django project:

def getUserInfo(request):

    user = request.user
    user_dict = model_to_dict(user)
    user_dict.pop("password")
    user_dict.pop("is_superuser")
    user_dict["head_img"] = user.head_img.url # there is `/media/images/users/head_img/blob_NOawLs1`

I want to add my server domain or ip in the front of it, like:

http://www.example.com:8000/media/images/users/head_img/blob_NOawLs1

How to get current server ip( or domain )?

EDIT

I am not going to get the remote ip, I just want to get the server ip. I mean, I write the Django as backend server, when it …

如何通过PayPal确保我的支付系统的安全性？

我使用vue-paypal-check创建前端PayPal按钮进行付款.

代码如下:

  <Pay-Pal
    v-if="paypal_live_id && paypal_sandbox_id"
    :amount="amount"
    currency="USD"
    :client="credentials"
    :env="paypal_env"

    @payment-authorized="payment_authorized_cb"
    @payment-completed="payment_completed_cb"
    @payment-cancelled="payment_cancelled_cb"

    :items="pay_items"
  >

</Pay-Pal>

一些dota如下:

data(){
  return {
    paypal_env: this.$GLOBAL_CONST.PAYMENT.PAYPAL_ENV,

    paypal_sandbox_id: undefined,
    paypal_live_id: undefined,
  }
},
computed: {

  credentials() {
    return {
      sandbox: this.paypal_sandbox_id,
      production: this.paypal_live_id,
    }
  },
},

薪酬成功的回调方法:

  payment_completed_cb(res){
    some method to access API for payment success // there will request the API for change the order status or reduce the balance. 
  },

但我有一个问题,如果客户的某人是技术上的邪恶,他payment_completed_cb直接打电话,而不是通过paypal付款.

我怎么能阻止这个？

我可以使用下面的链接来过滤id=16的数据：

http://localhost:8000/api/physicalservertask/list_for_home_workpanel/?id=16

这是我的列表api视图：

class PhysicalServerTaskListAPIView(ListAPIView):

    serializer_class = PhysicalServerTaskListSerializer
    permission_classes = [IsAdminUser]
    def get_queryset(self):
        query_params = self.request.query_params
        filters = {'{}__contains'.format(key): value
                   for key, value in query_params.items()
                   }

        return PhysicalServerTask.objects.filter(**filters)

我有一个问题，如何id>= 16通过网址查询的数据列表？

我的意思是我是否可以通过：

http://localhost:8000/api/physicalservertask/list_for_home_workpanel/?id__gte=16

过滤数据。

我知道我可以在ListAPIView查询中这样：

id_gte = self.request.query_params.copy().get('id_gte')
...
qs = PhysicalServerTask.objects.filter(**filters)
qs.filter(Q(id__gte=id__gte))

但是是否有更方便的方法来实现这一目标？

我有一个IPv4ListSerializer，它有一个depth = 1：

class IPv4ListSerializer(ModelSerializer):
    """
    ipv4
    """
    ip_status = serializers.CharField(read_only=True)
    class Meta:
        model = IPv4Manage
        fields = "__all__"
        depth = 1

但结果它变成了每个领域depth 1：

[
    {
        "id": 281,
        "ip_status": "Vlaned",
        "ip": "43.243.33.1",
        "netmask": "255.255.255.248",
        "prefix": 29,
        "is_gateway": false,
        "is_network_ip": false,
        "is_broadcast_ip": false,
        "desc": null,
        "ctime": "2018-04-26T21:17:33.623092+08:00",
        "uptime": "2018-06-02T12:48:41.882016+08:00",
        "ipv4network": {
            "id": 21,
            "network_ip": "43.243.33.0",
            "prefix": 24,
            "ctime": "2018-04-26T21:17:33.533667+08:00",
            "uptime": "2018-04-26T21:17:33.533814+08:00",
            "area_partition": 7
        },
        "vlaned_ipv4network": {
            "id": 1,
            "network_ip": "43.243.33.0",
            "prefix": 29,
            "gateway_ip": "43.243.33.6",
            "broadcast_ip": …