对于400错误，出现的原因大概有几个。
一：第一步确认postmen中发送的数据类型是json。比如Headers中Content-Type类型是application/json;或是前端代码Ajax中添加：contentType: 'application/json;charset=UTF-8'；
二：确认postmen中发送的数据格式是否正确。postmen中经常有人有漏写一对“{}“或是缺少逗号，引号，冒号的小问，好在postmen会自动报错提示； 而在前端中你必须重新包装传入参数为JSON型。使用JSON.stringify(params)将params参数重新包装；
三：检查参数的类型是否一一对应;
四：对接接口时，有可能参数的值不匹配，比如说地址不符合实际要求时，可能返回400错误提示；
本人遇到的属于第四种情况，在检查完预报参数类型和数据格式之后，依然报400错误，后来发现是对方地址有验证，有实际的报错信息，但是我们得到的是400错误，怎么解决呢？
下面贴代码：
//创建货件，设置请求参数
public ShipmentRequest SetRequest(Package package, PBUSPSConfig Config)
{
var model = new ShipmentRequest();
string[] address1 = new string[] { package.SenderAddress.Address };//发件地址
string[] address2 = new string[] { !string.IsNullOrWhiteSpace(package.ShippingAddress.Address)? package.ShippingAddress.Address:"", !string.IsNullOrWhiteSpace(package.ShippingAddress.Address2)? package.ShippingAddress.Address2:"" , !string.IsNullOrWhiteSpace(package.ShippingAddress.Address3) ? package.ShippingAddress.Address3:"" };//收件地址
foreach (var packageInfo in package.PackageInfos)
{
//1磅等于453.59克
double weights = Convert.ToDouble(packageInfo.Weight * 1000);
//常衡盎司：重量单位。整体缩写为oz.av。 1盎司 = 28.350克
decimal Weight = Convert.ToDecimal(weights / 28.350);//重量转盎司
model.fromAddress = new Address()
{
company = package.SenderAddress.CompanyName,
name = package.SenderAddress.FirstName,
phone = !string.IsNullOrWhiteSpace(package.SenderAddress.PhoneNumber) ? package.SenderAddress.PhoneNumber : package.SenderAddress.Mobile,
email = package.SenderAddress.Email,
residential = false,
addressLines = address1,
cityTown = package.SenderAddress.City,
stateProvince = package.SenderAddress.Province,
postalCode = package.SenderAddress.PostalCode,
countryCode = package.SenderAddress.CountryCode,
};
model.toAddress = new Address()
{
company = package.ShippingAddress.CompanyName,
name = package.ShippingAddress.FirstName,
phone =!string.IsNullOrWhiteSpace(package.ShippingAddress.PhoneNumber)? package.ShippingAddress.PhoneNumber: package.ShippingAddress.Mobile,
email = "",
residential = false,
addressLines = address2,
cityTown = package.ShippingAddress.City,
stateProvince = !string.IsNullOrWhiteSpace(localityProvincia) ? localityProvincia : package.ShippingAddress.Province,
postalCode = package.ShippingAddress.PostalCode,
countryCode = package.ShippingAddress.CountryCode,
};
model.parcel = new parcel()
{
weight = new Weight()
{
unitOfMeasurement = "OZ",//度量单位
weight = Weight,//包裹的重量
},
dimension = new Dimension()
{
unitOfMeasurement = "IN",
length=10,
width=4,
height=6,
irregularParcelGirth = "20"//将此设置为不规则包裹的周长。周长是高度和宽度之和的两倍:
}
};
model.rates = new rates[] {
new rates()
{
carrier="NEWGISTICS",
serviceId="PRCLSEL",
parcelType="PKG",
specialServices= new SpecialServices[]{
new SpecialServices()
{
specialServiceId="DelCon"
},
new SpecialServices()
{
specialServiceId="NOTIFICATIONS",
inputParameters=new InputParameters[] {
new InputParameters(){
name="RECIPIENT_NOTIFICATION_TYPE",
value="ON_DELIVER"
},
new InputParameters(){
name="RECIPIENT_NOTIFICATION_EMAIL",
value="widgets@example.com"
}
}
}
}
}
};
model.documents = new documents[] {
new documents(){
type="SHIPPING_LABEL",
contentType="URL",
size="DOC_4X6",
fileFormat="PDF",
}
};
model.shipmentOptions = new shipmentOptions[] {
new shipmentOptions(){
name="SHIPPER_ID",
value=Config.ShipperId,
},
new shipmentOptions(){
name="IS_RECTANGULAR",
value="false",
},
new shipmentOptions(){
name="CLIENT_FACILITY_ID",
value=Config.ClientFacilityId,
},
new shipmentOptions(){
name="CARRIER_FACILITY_ID",
value=Config.CarrierFacilityId,
},
new shipmentOptions(){
name="NON_DELIVERY_OPTION",
//大于一磅的包裹，就是这样的值ChangeServiceRequested, 小于一磅的，就空着，不填
value=weights > 453.59?"ChangeServiceRequested":"",
}
};
}
return model;
}View Code
1 //创建货件，取返回参数 ShipmentResponse
2 public string GetResponse(ShipmentRequest ShipmentRequest, string access_token, PBUSPSConfig config)
3 {
4 var stopWatch = new Stopwatch();
5 var Url = config.ForecastUrl + "/shippingservices/v1/shipments?includeDeliveryCommitment=true";
6 var TransactionId = GenerateStringID();
7 HttpWebRequest request = null;
8 if (Url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
9 {
10 request = WebRequest.Create(Url) as HttpWebRequest;
11 request.ProtocolVersion = HttpVersion.Version11;
12 request.KeepAlive = false;
13 }
14 else
15 {
16 request = (HttpWebRequest)WebRequest.Create(Url);
17 }
18 request.Method = "POST";
19 request.ContentType = "application/json";
20 request.Accept = "application/json";
21 request.AllowAutoRedirect = true;
22 request.Headers.Add("Authorization", "Bearer " + access_token);
23 request.Headers.Add("X-PB-TransactionId", TransactionId);
24 Stream myRequestStream = request.GetRequestStream();
25 StreamWriter myStreamWriter =
26 new StreamWriter(myRequestStream, Encoding.GetEncoding("utf-8"));
27 var Ship = JsonConvert.SerializeObject(ShipmentRequest);
28 byte[] data = Encoding.UTF8.GetBytes(Ship);
29 SetCertificatePolicy();
30 using (Stream requestStream = request.GetRequestStream())
31 {
32 requestStream.Write(data, 0, data.Length);
33 }
34 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
35 {
36 Stream myResponseStream = response.GetResponseStream();
37 StreamWriter myStreamReader =
38 new StreamWriter(myResponseStream, Encoding.GetEncoding("utf-8"));
39 using (StreamReader reader = new StreamReader(response.GetResponseStream()))
40 {
41 return reader.ReadToEnd();
42 }
43 }
44 }View Code
3.处理400错误 (catch)1 HttpWebResponse response = (HttpWebResponse)ex.Response;
2 var message = "";
3 if (response?.StatusCode == HttpStatusCode.BadRequest)
4 {
5 using (Stream data = response.GetResponseStream())
6 {
7 using (StreamReader reader = new StreamReader(data))
8 {
9 string text = reader.ReadToEnd();
10 var jo = JsonConvert.DeserializeObject<List<Errors>>(text);
11 var json = jo.First();
12 message = "服务商:" + json.message;
13 }
14 }
15 }4.在得到具体的返回值之后，发现返回值是一个以中括号开头和结尾的字符串类型，添加一个实体类，映射返回值
1 public class Errors {
2 [JsonProperty("errorCode")]
3 public string errorCode { get; set; }
4 [JsonProperty("message")]
5 public string message { get; set; }
6 [JsonProperty("parameters")]
7 public string[] parameters { get; set; }
8 }View Code
以上就是处理400参数的解决方案。
5.“基础连接已经关闭”的错误
1 private static void SetCertificatePolicy()
2 {
3 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
4 // 这里设置了协议类型。
5 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Ssl3;// SecurityProtocolType.Tls1.2;
6 ServicePointManager.CheckCertificateRevocationList = true;
7 ServicePointManager.DefaultConnectionLimit = 100;
8 ServicePointManager.Expect100Continue = false;
9 }
10 private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
11 {
12 return true; //总是接受
13 }View Code
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
