我有一个C#WebService设置来返回在移动设备上使用的JSON信息。一切正常,除了其中一个调用现在抛出“HTTP错误502(错误网关):网关或代理服务器收到来自上游服务器的无效响应”。
当我增加调用返回的数据时,错误开始了。从驻留在服务器上的JSON文件中读取数据。这个数据文件的大小以前是1,324,859字节,工作正常(现在仍然如此),新数据文件是1,563,570字节,这是一个失败的。
似乎很明显我在一次通话中达到了一定程度的默认限制,但我不能因为我这样想出如何增加这个限制。谷歌搜索指向设置maxJsonLength的方向,但这似乎没有任何影响。
下面是WebService的深层代码,更重要的是我的web.config。我应该说这个调用在本地运行正常,这意味着在VS2010中运行,但在服务器上运行失败(GearHost运行IIS 7.5)。
我是配置/设置IIS的新手,所以非常感谢任何帮助。
[ServiceContract]
public interface IMyService
{
[OperationContract]
[WebInvoke(Method = "GET", UriTemplate = "/GetItems", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
Item[] GetItems();
}
public class MyService : IMyService
{
public Item[] GetItems()
{
var result = ReadDataFile<List<Item>>(DataType.Items);
return result == null ? null : result.ToArray();
}
}
到目前为止,我已经尝试了很多设置,我甚至不确定需要在这里做什么,不应该做什么......
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="Everywhere" />
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>
<system.web>
<customErrors mode="On"/>
<compilation debug="true" targetFramework="4.0" />
<caching>
<outputCacheSettings>
<outputCacheProfiles>
<add name="NoCacheProfile" noStore="true" duration="0" varyByParam="none" enabled="true"/>
</outputCacheProfiles>
</outputCacheSettings>
</caching>
</system.web>
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="StreamedRequestWebBinding"
bypassProxyOnLocal="true"
useDefaultWebProxy="false"
hostNameComparisonMode="WeakWildcard"
sendTimeout="10:15:00"
openTimeout="10:15:00"
receiveTimeout="10:15:00"
maxReceivedMessageSize="2147483647"
maxBufferSize="2147483647"
maxBufferPoolSize="2147483647"
transferMode="StreamedRequest">
<readerQuotas maxArrayLength="2147483647"
maxStringContentLength="2147483647" />
</binding>
</webHttpBinding>
</bindings>
<services>
<service name="JSON_WebService.WoWService" behaviorConfiguration="ServiceBehaviour">
<endpoint address ="" binding="webHttpBinding" bindingConfiguration="StreamedRequestWebBinding" contract="JSON_WebService.IWoWService" behaviorConfiguration="web">
</endpoint>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehaviour">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="50000000"/>
</webServices>
</scripting>
</system.web.extensions>
</configuration>
答案 0 :(得分:1)
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="1000000000" />
</webServices>
</scripting>
</system.web.extensions>
答案 1 :(得分:0)
与GearHost(托管Web服务的人)来回通信后,他们确认我的问题与服务器错误有关,而不是编程/ web.config错误。 jsonSerialization设置应该足够了。
在他们的辩护中,我必须说他们的支持非常优秀,而且我认为其他一些人会认为我的主张是一个发展问题。