简而言之：我尝试从服务器获取数据,http请求标头的内容类型设置为@“text / html ..但由于某种原因,RestKit将其更改为application /
JSON
说明：
如果我只使用AFNetworking来做这个请求……就像魅力一样……这就是我的AFNetworking代码：
AFHTTPClient *client = [AFHTTPClient alloc] initWithBaseURL:
[NSURL URLWithString:kApiBaseUrl]];
singleton.parameterEncoding = AFJSONParameterEncoding;
[singleton setDefaultHeader:@"Accept" value:@"text/html"];
[client getPath:getPath parameters:nil success:successCallback failure:failureCallback];
如果我使用完全相同的客户端并将其附加到
MyClient *client = [MyClient getSingleton]; //MyClient is instantiated as above
self.objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
self.objectManager.managedObjectStore = self.managedObjectStore;
// this should have already been done by my client,but putting
// it here just to be sure
[self.objectManager setAcceptHeaderWithMIMEType:@"text/html"];
[[RKObjectManager sharedManager] getObjectsAtPath:kGradesPath
parameters:nil
success:^(RKObjectRequestOperation *operation,RKMappingResult *mappingResult) {
// handle success
} failure:^(RKObjectRequestOperation *operation,NSError *error) {
// handle failure
}];
我得到的错误是：
restkit.network:RKObjectRequestOperation.m:576 Object request Failed: Underlying HTTP request operation Failed with error: Error Domain=org.restkit.RestKit.ErrorDomain Code=-1016 "Expected content type {( "application/x-www-form-urlencoded","application/json" )},got text/html" UserInfo=0x8f7acd0
挖掘主题..我在managedObjectRequestOperationWithRequest中设置了一个断点,然后我检查了创建的HTTPRequestOperation的acceptableContentTypes,它没有！所以我假设RestKit只是放置自己的默认可接受的内容类型..我只是不知道在哪里以及如何防止它.想法？
附：我无法控制服务器,因此我无法将其内容类型标头更改为application / JSON
更新：
事实证明,在RKObjectRequestOperation.m它从[RKMIMETypeSerialization registeredMIMETypes]获取mime类型;(第354行)..所以在RKMIMETypeSerialization.h中有方法：
/** Registers the given serialization class to handle content for the given MIME Type identifier. MIME Types may be given as either a string or as a regular expression that matches the MIME Types for which the given serialization should handle. Serializations are searched in the reverse order of their registration. If a registration is made for an already registered MIME Type,the new registration will take precedence. @param serializationClass The class conforming to the RKSerialization protocol to be registered as handling the given MIME Type. @param MIMETypeStringOrRegularExpression A string or regular expression specifying the MIME Type(s) that given serialization implementation is to be registered as handling. */ + (void)registerClass:(Class<RKSerialization>)serializationClass forMIMEType:(id)MIMETypeStringOrRegularExpression;
解决方法
RestKit通常期望其响应数据使用单个MIMEType(JSON).但是,您可以使用您找到的方法告诉它处理text / plain和text / html等其他类型,根据我的经验,它非常方便.将此添加到我的RestKit配置(我在我的应用程序委托中),允许我接受application / json和text / html作为响应数据内容类型.
[RKMIMETypeSerialization registerClass:[RKNSJSONSerialization class] forMIMEType:@"text/html"];
就我而言,这也很有用,因为泽西岛 – 我公司后端团队使用的Web服务框架 – 将空载荷的内容类型默认为text / plain,除非我专门为该MIMEType注册,否则会触发失败块.
希望这可以帮助.
