Question

我正在构建一个需要使用post方法与服务器连接的应用程序并获取结果。我需要获取服务器响应的特定部分并将其转换为不同类型的基元（从String到short，int，byte等。）

所以基本上我需要获取响应代码的一部分并将其转换为short，而不是查看是否存在具有此值的enum元素。但问题是响应返回值{{1}并且在我将其转换为short并将其传递给001中的getByValue(int)方法后，它告诉我没有001的元素。如果我打印enum值，我得到{ {1}}。

以下是我正在使用的代码示例：

short

和packetTypeToStr代码：

例外：

                httppost.setEntity(new UrlEncodedFormEntity(postParameters));

            HttpResponse response = httpclient.execute(httppost);
            Log.v("Response ","Status line : "+ response.getStatusLine().toString());
            String responseBody = EntityUtils.toString(response.getEntity()); //response
            Log.v("Response ","Response : "+ responseBody);

            int objectIdentificator = Integer.parseInt(responseBody.substring(0,32));
            Log.v("Response ","Object Identificator (LONGINT) : "+ responseBody.substring(0,32));
            Log.v("Response ","Object Identificator (LONGINT) : "+ objectIdentificator);

            String type = responseBody.substring(32,35);
            Log.v("Response ","TYPE (UNSIGNED BYTE) : "+ type);
            short pType = Short.parseShort(type); // short 
            Log.v("Response ","TYPE (UNSIGNED BYTE) : "+ pType);

            String operation = responseBody.substring(35,38); //
            short operationType = Short.parseShort(operation);
            Log.v("Response ","OPERATION (UNSIGNED BYTE) : "+ operation);
            Log.v("Response ","OPERATION (UNSIGNED BYTE) : "+ operationType);

            String objectId = responseBody.substring(38, 70);
            Log.v("Response ","UID (CHAR, length 32) : "+ objectId);

            int id = Integer.parseInt(responseBody.substring(70, 102));
            Log.v("Response ","ID (LONGINT) : "+ responseBody.substring(70, 102));
            Log.v("Response ","ID (LONGINT) : "+ id);

            String size = responseBody.substring(102,134);          
            Log.v("Response ","Data Size (LONGINT) : "+ size);

            String hash = responseBody.substring(134,166);
            Log.v("Response ","Data Hash (CHAR, length 32 : "+ hash);

            String  dType = responseBody.substring(166,169);
            Log.v("Response ","Data Type (UNSIGNED BYTE) : "+ dType);
            short dataType = Short.parseShort(dType);
            Log.v("Response ","Data Type (UNSIGNED BYTE) : "+ dataType);

            String data = responseBody.substring(169, responseBody.length());
            Log.v("Response ","Data (CHAR, any length, in BASE64) : "+ data);

            byte[] first = Base64.decode(data);
            String string = new String(first, "UTF-8");

            Log.v("Response ","BASE 64 : "+ string);


            RPCPacket packet = new RPCPacket(   objectIdentificator,
                                                RPCPacketType.getPacketTypeByValue(pType),
                                                RPCOperationType.getByValue(Integer.parseInt(operation)),
                                                objectId,
                                                id,
                                                Integer.parseInt(size),
                                                hash,
                                                RPCPacketDataType.getByValue(dataType),
                                                first
                                                );


            Log.v("PacketType", "RPCPacketType : "+packet.packetTypeToStr(RPCPacketType.getPacketTypeByValue(pType)));

RPCOperationType代码：

public String packetTypeToStr(RPCPacketType type){

        String str=null;
        switch(type){
        case ST_OBJECT_TYPE_INFO_START: 
                str = "ST_OBJECT_TYPE_INFO_START"; 
            break;
        case ST_OBJECT_TYPE_INFO_ERROR: 
                str = "ST_OBJECT_TYPE_INFO_ERROR"; 
            break;
        case ST_OBJECT_TYPE_COLLECTION: 
                str = "ST_OBJECT_TYPE_COLLECTION"; 
            break;
        case ST_OBJECT_TYPE_CATEGORY: 
                str = "ST_OBJECT_TYPE_CATEGORY";
            break;
        case ST_OBJECT_TYPE_CARD: 
                str = "ST_OBJECT_TYPE_CARD"; 
            break;
        case ST_OBJECT_TYPE_MESSAGE: 
                str = "ST_OBJECT_TYPE_MESSAGE"; 
            break;
        case ST_OBJECT_TYPE_GENRE: 
                str = "ST_OBJECT_TYPE_GENRE"; 
            break;
        case ST_OBJECT_TYPE_TAG: 
                str = "ST_OBJECT_TYPE_TAG"; 
            break;
        case ST_OBJECT_TYPE_USER: 
                str = "ST_OBJECT_TYPE_USER"; 
            break;
        case ST_OBJECT_TYPE_MEDIA_COLLECTION: 
                str = "ST_OBJECT_TYPE_MEDIA_COLLECTION"; 
            break;
        case ST_OBJECT_TYPE_MEDIA_CATEGORY: 
                str = "ST_OBJECT_TYPE_MEDIA_CATEGORY"; 
            break;
        case ST_OBJECT_TYPE_MEDIA_CARD: 
                str = "ST_OBJECT_TYPE_MEDIA_CARD"; 
            break;
        case ST_OBJECT_TYPE_MEDIA_TAG: 
                str = "ST_OBJECT_TYPE_MEDIA_TAG"; 
            break;
        case ST_OBJECT_TYPE_INFO_END: 
                str = "ST_OBJECT_TYPE_INFO_END"; 
            break;
        case ST_OBJECT_TYPE_CARDSTATS_CATEGORY: 
                str = "ST_OBJECT_TYPE_CARDSTATS_CATEGORY"; 
            break;
        case ST_OBJECT_TYPE_CONTENT: 
                str = "ST_OBJECT_TYPE_CONTENT"; 
            break;
        case ST_OBJECT_TYPE_MEDIA_COLLECTION_BUTTON: 
                str = "ST_OBJECT_TYPE_MEDIA_COLLECTION_BUTTON"; 
            break;
        default: 
                str ="UNKNOWN "+type;
            break;
        }

        return str;
    }

所以有什么建议如何在不改变枚举中的id的情况下解决这个问题？提前谢谢！

Answer 1

您向我们展示的代码不会引发异常。堆栈跟踪说明异常发生的位置：

at com.stampii.stampii.comm.rpc.RPCCommucatorDefines$RPCOperationType.getByValue(RPCCommucatorDefines.java:34)

因此，RPCOperationType.getByValue()中RPCCommucatorDefines.java的调用，在第34行抛出此异常。你当然传递一个字符串，而不是一个int，BTW，因为没有办法将短变量打印为001，就像在异常的错误消息中一样。

堆栈跟踪的两个第一行是最重要的一行。第一行告诉你什么是错的，第二行告诉你抛出异常的位置。

Answer 2

如果您需要用零填充数字，则必须使用Formatter 。

Java短原始类型问题

2 个答案: