集成環信客服 拉取歡迎語，注意哦，是歡迎語不是問候語

環信客服的問候語直接打開開關就能夠，可是歡迎語須要本身去掉環信的接口獲取。

 

獲取歡迎語的思路是，經過環信的接口獲取歡迎語，而後拿到歡迎語封裝成一條消息，導入數據庫中，刷新tableView便可。

具體的步驟：（先貼代碼，具體看附件，先把附件的1，2步驟完成）

1.經過post請求先獲取管理員的token

// 本身封裝好一個方法 獲取token  這裏採用的是AFNetworking
+ (void)HXGetTokenWithReturnValeuBlock: (HXGetTokenSuccessBlock) successblock WithFailureBlock: (FailureBlock) failureBlock
{
    NSURL *url = [NSURL URLWithString:@"https://a1.easemob.com/下圖中的「組織」/下圖中的應用名稱/token"];
    NSDictionary *body = @{@"grant_type":@"password",@"username": 「手機app登陸的用戶名」,@"password":@"環信密碼"};
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:[[self DictionaryConversionJson:body] dataUsingEncoding:NSUTF8StringEncoding]];
    AFHTTPSessionManager *manager = [self manager];
    SKURLSessionTask *task = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {

        if (responseObject==nil) {
            return;
        }
        id obj = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];
        NSLog(@"服務器返回信息%@",obj);
        if (obj==nil) {
            return;
        }
        NSString* token = [obj safeJsonObjForKey:@"access_token"];
        successblock(token);
    }];
    [task resume];
}

+(NSString*)DictionaryConversionJson:(NSDictionary *)Dictionary
{
    NSError *parseError = nil;
    NSString *jsonStr = @"";
    if ([Dictionary isKindOfClass:[NSDictionary class]]){
        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:Dictionary options:NSJSONWritingPrettyPrinted error:&parseError];
        jsonStr = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];
    }
    
    return jsonStr;
}

 

2.獲取token後，再去獲取歡迎語

+ (void)HXGetWelComeStrWithToken:(NSString *)token ReturnValeuBlock: (HXGetTokenSuccessBlock) successblock WithFailureBlock: (FailureBlock) failureBlock;
{
    NSString *userName = USER_NAME;
    NSString *url = [NSString stringWithFormat:@"http://kefu.easemob.com/v1/tenantapi/welcome?tenantId=「填寫tenantId」&orgName=「填寫組織」&appName=「填寫應用名稱」&userName=%@&token=%@",userName,token];

    AFHTTPSessionManager *manager = [self manager];
    [manager GET:url parameters:@"" progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        id obj = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
        NSLog(@"服務器返回信息%@",obj);
        successblock(obj);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        failureBlock(error.code);
    }];
}
3.獲取到歡迎語後構造一條消息，咱們的聊天界面採用的是環信的EaseMessageViewController

因此在viewDidLoad裏面去構造這個消息

// 獲取管理員的token
    [SKRequest HXGetTokenWithReturnValeuBlock:^(NSString *token) {
        //獲取歡迎語
        [SKRequest HXGetWelComeStrWithToken:token ReturnValeuBlock:^(NSString *token) {
            
            EMTextMessageBody *body = [[EMTextMessageBody alloc] initWithText:token];
            NSString *from = [[EMClient sharedClient] currentUsername];
            //生成Message
            EMMessage *message = [[EMMessage alloc] initWithConversationID:@"填寫IM服務號，注意所有小寫" from:from to:@"填寫IM服務號，注意所有小寫" body:body ext:nil];
            message.chatType = EMChatTypeChat;// 設置爲單聊消息
            message.status=EMMessageStatusSuccessed;
            message.direction = EMMessageDirectionReceive;
            EMConversation *conversation = [[EMClient sharedClient].chatManager getConversation:from  type:EMConversationTypeChat createIfNotExist:YES];
            [conversation insertMessage:message];
            
            [self.tableView reloadData];
            
        } WithFailureBlock:^(NSInteger errorCode) {
            
        }];
    } WithFailureBlock:^(NSInteger errorCode) {
        
    }];

4.完成