目前只實現了java生成的固定的uuid：85bb94b8-fd4b-4e1c-8f49-3cedd49d8f28的序列化
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package mainimport ( "encoding/binary" "encoding/json" "fmt" "log" "os" "strings" "time" "github.com/Shopify/sarama" "github.com/google/uuid")const ( DATE_TIME_PATTERN = "" STREAM_MAGIC = 0xaced STREAM_VERSION = 5 TC_STRING = 0x74 TC_OBJECT = 0x73 TC_CLASSDESC = 0x72 SC_SERIALIZABLE = 0x02 TC_ENDBLOCKDATA = 0x78 TC_NULL = 0x70)func main() { uuidTest()}func uuidTest() { f, _ := os.Create("uuid-go.out") defer f.Close() f.Write(ShortBytes(STREAM_MAGIC)) f.Write(ShortBytes(STREAM_VERSION)) f.Write([]byte{TC_OBJECT}) f.Write([]byte{TC_CLASSDESC}) className := "java.util.UUID" classNameLen := len(className) f.Write(ShortBytes(uint16(classNameLen))) f.Write([]byte(className)) sid := -4856846361193249489 f.Write(LongBytes(uint64(sid))) //flags f.Write([]byte{2}) //fields length f.Write(ShortBytes(2)) //field type code f.Write([]byte{'J'}) f1 := "leastSigBits" f1Len := len(f1) f.Write(ShortBytes(uint16(f1Len))) f.Write([]byte(f1)) //filed type code f.Write([]byte{'J'}) f2 := "mostSigBits" f2Len := len(f2) f.Write(ShortBytes(uint16(f2Len))) f.Write([]byte(f2)) f.Write([]byte{TC_ENDBLOCKDATA}) f.Write([]byte{TC_NULL}) leastSigBits := -8121893460813967576 f.Write(LongBytes(uint64(leastSigBits))) mostSigBits := -8810284723775779300 f.Write(LongBytes(uint64(mostSigBits)))}func ShortBytes(i uint16) []byte { bytes := make([]byte, 2) binary.BigEndian.PutUint16(bytes, i) return bytes}func LongBytes(i uint64) []byte { bytes := make([]byte, 8) binary.BigEndian.PutUint64(bytes, i) return bytes}func BigEndian() { // 大端序 // 二進制形式：0000 0000 0000 0000 0001 0002 0003 0004 var testInt int32 = 0x01020304 // 十六進制表示 fmt.Printf("%d use big endian: \n", testInt) var testBytes []byte = make([]byte, 4) binary.BigEndian.PutUint32(testBytes, uint32(testInt)) //大端序模式 fmt.Println("int32 to bytes:", testBytes) convInt := binary.BigEndian.Uint32(testBytes) //大端序模式的字節轉為int32 fmt.Printf("bytes to int32: %d\n\n", convInt)}func LittleEndian() { // 小端序 //二進制形式： 0000 0000 0000 0000 0001 0002 0003 0004 var testInt int32 = 0x01020304 // 16進制 fmt.Printf("%d use little endian: \n", testInt) var testBytes []byte = make([]byte, 4) binary.LittleEndian.PutUint32(testBytes, uint32(testInt)) //小端序模式 fmt.Println("int32 to bytes:", testBytes) convInt := binary.LittleEndian.Uint32(testBytes) //小端序模式的字節轉換 fmt.Printf("bytes to int32: %d\n\n", convInt)}func Int64ToBytes(i int64) []byte { var buf = make([]byte, 8) binary.BigEndian.PutUint64(buf, uint64(i)) return buf} |
java讀取測試
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public class Test { public static void main(String[] args) throws IOException, ClassNotFoundException { readUUIDTest(); } private static void readUUIDTest() throws IOException, ClassNotFoundException { try (var fis = new FileInputStream("uuid-go.out"); var is = new ObjectInputStream(fis)) { var uuid = is.readObject(); System.out.print(uuid); } }} |
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原文鏈接：https://www.jianshu.com/p/ebf9fe8d234d
