iOS-NSString值为Unicode格式（字符串编码转换成中文编码）

• + (NSString *)replaceUnicode:(NSString *)unicodeStr 
  {  
        
     NSString *tempStr1 = [unicodeStrstringByReplacingOccurrencesOfString:@"\\u"withString:@"\\U"];  
     NSString *tempStr2 = [tempStr1stringByReplacingOccurrencesOfString:@"\""withString:@"\\\""];  
     NSString *tempStr3 = [[@"\""stringByAppendingString:tempStr2] stringByAppendingString:@"\""];  
     NSData *tempData = [tempStr3dataUsingEncoding:NSUTF8StringEncoding];  
     NSString* returnStr = [NSPropertyListSerializationpropertyListFromData:tempData  
                                                            mutabilityOption:NSPropertyListImmutable   
                                                                      format:NULL  
                                                            errorDescription:NULL];  
      NSLog(@"%@",returnStr);
     return [returnStrstringByReplacingOccurrencesOfString:@"\\r\\n"withString:@"\n"];  
  }