一站式的訊息管理器
在網路應用中，訊息處理是必不可少的，該文章主要簡單介紹一款簡單的訊息管理器的實作，其具備以下功能：
- 提供多種訊息序列化和反序列化方式，目前支持JDK、ProtoStuff以及JSON，提供其他自定義的序列化/反序列化器插口，
- 提供多種訊息加密/解密，目前支持對稱加密：AES、不對稱加密：RSA、不可逆散列加密：MD5以及Base64的轉化并且提供自定義的加密/解密器插口，
- 提供簡單方便的訊息構造，支持鏈式構造，
- 支持創建可復用的流程化訊息發送器和接收器、可以完成從訊息發布、訊息格式化、訊息序列化/反序列化，訊息加密/解密的流程處理，并且發送器和接收器支持序列化保存，
首先需要引入依賴:
<dependency>
<groupId>io.protostuff</groupId>
<artifactId>protostuff-core</artifactId>
<version>1.6.0</version>
</dependency>
<dependency>
<groupId>io.protostuff</groupId>
<artifactId>protostuff-runtime</artifactId>
<version>1.6.0</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
然后直接拷貝原始碼
import com.google.gson.*;
import io.protostuff.LinkedBuffer;
import io.protostuff.ProtostuffIOUtil;
import io.protostuff.Schema;
import io.protostuff.runtime.RuntimeSchema;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.io.*;
import java.lang.reflect.Type;
import java.math.BigInteger;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.security.*;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
/**
* 提供一站式的訊息處理
*
* @author JingGe(* ^ ▽ ^ *)
* @date 2023-03-24 15:53
* @email [email protected]
*/
public class MessageManager {
/*=================訊息序列化/反序列化器=================>*/
private static final Gson GSON = new GsonBuilder()
.enableComplexMapKeySerialization()
.setDateFormat("yyyy-MM-dd HH:mm:ss")
.registerTypeAdapter(Class.class, new ClassCodec())
.create();
public static final MessageSerializer<String> JSON_SERIALIZER = GSON::toJson;
public static final MessageDeserializer<Object> JSON_DESERIALIZER = (source, type) -> GSON.fromJson(new String(source, StandardCharsets.UTF_8), type);
public static final MessageSerializer<byte[]> PROTO_STUFF_SERIALIZER = ProtoStuffUtil::serialize;
public static final MessageDeserializer<Object> PROTO_STUFF_DESERIALIZER = ProtoStuffUtil::deserialize;
public static final MessageSerializer<byte[]> JDK_SERIALIZER = source -> {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
try {
ObjectOutputStream outputStream = new ObjectOutputStream(stream);
outputStream.writeObject(source);
} catch (IOException e) {
e.printStackTrace();
}
return stream.toByteArray();
};
public static final MessageDeserializer<Object> JDK_DESERIALIZER = (source, type) -> {
ByteArrayInputStream stream = new ByteArrayInputStream(source);
try {
ObjectInputStream inputStream = new ObjectInputStream(stream);
return (Serializable) inputStream.readObject();
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}
return null;
};
public interface MessageSerializer<T> {
T serialize(Object source);
}
public interface MessageDeserializer<T> {
T deserialize(byte[] source, Class<T> type);
}
/*=======================Finished======================<*/
/*=================加密/解密器=================>*/
public static final Encryptor<Object> NO_ENCRYPTOR = (source, key) -> source;
public static final Decipher<Object> NO_DECIPHER = (source, key) -> source;
public static final Encryptor<byte[]> AES_ENCRYPTOR = (source, key) -> {
try {
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(bytes(key, Charset.defaultCharset(), "密鑰只能是byte array或者String"), "AES"));
return cipher.doFinal(source);
} catch (Exception e) {
e.printStackTrace();
}
return null;
};
public static final Decipher<byte[]> AES_DECIPHER = (source, key) -> {
try {
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(bytes(key, Charset.defaultCharset(), "密鑰只能是byte array或者String"), "AES"));
return cipher.doFinal(source);
} catch (Exception e) {
e.printStackTrace();
}
return null;
};
public static final RSAEncryptor RSA_ENCRYPTOR = new RSAEncryptor();
public static final RSADecipher RSA_DECIPHER = new RSADecipher();
public static final MD5Encryptor MD5_ENCRYPTOR = new MD5Encryptor();
public static final Encryptor<String> BASE64_ENCRYPTOR = (source, key) -> {
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(source);
};
public static final Decipher<byte[]> BASE64_DECIPHER = (source, key) -> {
try {
BASE64Decoder decoder = new BASE64Decoder();
return decoder.decodeBuffer(new String(source));
} catch (Exception e) {
e.printStackTrace();
}
return null;
};
public static class RSAEncryptor implements Encryptor<byte[]> {
@Override
public byte[] encrypt(byte[] source, Object publicKey) {
try {
PublicKey key = null;
if (publicKey instanceof PublicKey) {
key = (PublicKey) publicKey;
} else {
byte[] content = bytes(publicKey, Charset.defaultCharset(), "密鑰格式例外：" + publicKey
.getClass()
.getName());
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(content);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
key = keyFactory.generatePublic(keySpec);
;
}
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, key);
return cipher.doFinal(source);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public KeyPair generateKeyPair(int keySize) {
try {
keySize = keySize <= 0 ? 2048 : keySize;
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(keySize);
return keyPairGenerator.generateKeyPair();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
public static class RSADecipher implements Decipher<byte[]> {
@Override
public byte[] decrypt(byte[] source, Object privateKey) {
try {
PrivateKey key = null;
if (privateKey instanceof PrivateKey) {
key = (PrivateKey) privateKey;
} else {
byte[] content = bytes(privateKey, Charset.defaultCharset(), "密鑰格式例外：" + privateKey
.getClass()
.getName());
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(content);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
key = keyFactory.generatePrivate(keySpec);
}
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, key);
return cipher.doFinal(source);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
public static class MD5Encryptor implements Encryptor<String> {
@Override
public String encrypt(byte[] source, Object saltKey) {
byte[] key = bytes(saltKey, Charset.defaultCharset(), "密鑰只能是String或byte array");
byte[] content = new byte[source.length + key.length];
System.arraycopy(source, 0, content, 0, source.length);
System.arraycopy(key, 0, content, source.length, key.length);
byte[] res;
try {
MessageDigest messageDigest = MessageDigest.getInstance("md5");
res = messageDigest.digest(messageDigest.digest(content));
if (res != null) {
StringBuilder md5code = new StringBuilder(new BigInteger(1, res).toString(16));
for (int i = 0; i < 32 - md5code.length(); i++) {
md5code.insert(0, "0");
}
return md5code.toString();
}
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
}
public interface Encryptor<T> {
T encrypt(byte[] source, Object key);
}
public interface Decipher<T> {
T decrypt(byte[] source, Object key);
}
/*=======================Finished======================<*/
/*=================訊息格式化器=================>*/
public interface MessageFormatter<T> {
void format(T msg);
}
/*=======================Finished======================<*/
public static MessageBuilder newMessageBuilder() {
return new MessageBuilder();
}
public static <T> MessageSenderWrapper<T> newMessageSenderWrapper(MessageSender<T> sender) {
return new MessageSenderWrapper<>(sender);
}
public static <T> MessageReceiverWrapper<T> newMessageReceiverBuilder(MessageReceiver<T> receiver) {
return new MessageReceiverWrapper<>(receiver);
}
public static <R> R getMessage(Object msg, MessageSerializer<R> serializer) {
return serializer.serialize(msg);
}
public static <R> R encryptMessage(byte[] msg, byte[] key, Encryptor<R> encryptor) {
return encryptor.encrypt(msg, key);
}
public static <R> R decryptMessage(byte[] msg, byte[] key, Decipher<R> decipher) {
return decipher.decrypt(msg, key);
}
public static String convert2Base64(byte[] msg) {
return BASE64_ENCRYPTOR.encrypt(msg, null);
}
public static byte[] base642Bytes(String base64) {
return BASE64_DECIPHER.decrypt(base64.getBytes(), null);
}
@SuppressWarnings("unchecked")
public static <T> T fromMessage(byte[] msg, Class<T> type, MessageDeserializer<Object> deserializer) {
return (T) deserializer.deserialize(msg, (Class<Object>) type);
}
public static Map<String, Object> wrapper2Map(Code code, String message, Object data) {
Map<String, Object> msg = new HashMap<>();
msg.put("code", code.flag);
msg.put("message", message);
msg.put("data", data);
return msg;
}
public static String getJsonMessage(Code code, String message, Object data) {
return getMessage(wrapper2Map(code, message, data), JSON_SERIALIZER);
}
public static String getJsonMessage(Code code, String message) {
return getMessage(wrapper2Map(code, message, null), JSON_SERIALIZER);
}
public static byte[] getProtoStuffMessage(Code code, String message, Object data) {
return getMessage(wrapper2Map(code, message, data), PROTO_STUFF_SERIALIZER);
}
public static byte[] getProtoStuffMessage(Code code, String message) {
return getMessage(wrapper2Map(code, message, null), PROTO_STUFF_SERIALIZER);
}
public static byte[] getJDKMessage(Code code, String message, Object data) {
return getMessage(wrapper2Map(code, message, data), JDK_SERIALIZER);
}
public static byte[] getJDKMessage(Code code, String message) {
return getMessage(wrapper2Map(code, message, null), JDK_SERIALIZER);
}
public static class MessageBuilder {
private final Map<String, Object> container = new ConcurrentHashMap<>();
private MessageSerializer<?> serializer;
private MessageBuilder() {
}
public MessageBuilder addMsg(String title, Object content) {
container.put(title, content);
return this;
}
public MessageBuilder addAllMsg(Map<String, Object> msg) {
container.putAll(msg);
return this;
}
public MessageBuilder code(Code code) {
container.put("code", code.flag);
return this;
}
public MessageBuilder message(String message) {
container.put("message", message);
return this;
}
public MessageBuilder data(Object data) {
container.put("data", data);
return this;
}
public MessageBuilder setSerializer(MessageSerializer<?> serializer) {
this.serializer = serializer;
return this;
}
public void clear() {
container.clear();
}
@SuppressWarnings("unchecked")
public <T> T getFinalMessage() {
return (T) (serializer == null ? JSON_SERIALIZER : serializer).serialize(container);
}
}
public static class MessageSender<T> implements Serializable, MessageHandler<T> {
private final List<MessageFormatter<Object>> formatters = new ArrayList<>();
private MessageSerializer<?> serializer;
private Encryptor<?> encryptor;
private Object key;
private Charset charset;
private boolean encode2Base64WhenEncrypted;
public MessageSender() {
}
@Override
@SuppressWarnings("unchecked")
public T getFinalMessage(Object msg) {
if (msg == null) {
return null;
}
for (MessageFormatter<Object> formatter : formatters) {
if (formatter != null) {
formatter.format(msg);
}
}
Object ser = serializer == null ? msg : serializer.serialize(msg);
byte[] content = bytes(ser, charset, "序列化后的訊息只能是String或者byte array");
if (encryptor != null) {
if (encode2Base64WhenEncrypted) {
return (T) convert2Base64(bytes(encryptor.encrypt(content, key), charset, "加密后的訊息只能是String或者byte array"));
}
return (T) encryptor.encrypt(content, key);
}
return (T) ser;
}
@SuppressWarnings("unchecked")
public static <T> MessageSender<T> fromBytes(byte[] source, MessageDeserializer<Object> deserializer) {
return (MessageSender<T>) fromMessage(source, MessageSender.class, deserializer);
}
}
public static class MessageReceiver<T> implements Serializable, MessageHandler<T> {
private final List<MessageFormatter<Object>> formatters = new ArrayList<>();
private MessageDeserializer<Object> deserializer;
private Decipher<?> decipher;
private Class<T> type;
private Object key;
private Charset charset;
private boolean decode2Base64BeforeDecrypt;
public MessageReceiver() {
}
@Override
@SuppressWarnings("unchecked")
public T getFinalMessage(Object msg) {
byte[] content = null;
if (decode2Base64BeforeDecrypt) {
if (msg instanceof String) {
content = base642Bytes((String) msg);
} else {
throw new UnsupportedOperationException("訊息不是String型別，無法進行Base64解碼");
}
}
Object des = content == null ? msg : content;
if (decipher != null) {
des = decipher.decrypt(content == null ? bytes(msg, charset, "如果訊息需要解密，則訊息必須是byte array") : content, key);
}
T ser = (T) des;
if (deserializer != null) {
ser = (T) deserializer.deserialize(bytes(des, charset, "解密后的結果必須是String或者byte array"), (Class<Object>) type);
}
for (MessageFormatter<Object> formatter : formatters) {
if (formatter != null) {
formatter.format(ser);
}
}
return (T) ser;
}
@SuppressWarnings("unchecked")
public static <T> MessageReceiver<T> fromBytes(byte[] source, MessageDeserializer<Object> deserializer) {
return (MessageReceiver<T>) fromMessage(source, MessageReceiver.class, deserializer);
}
}
public interface MessageHandler<T> {
T getFinalMessage(Object msg);
}
private static byte[] bytes(Object src, Charset charset, String errorMsg) {
if (src instanceof byte[]) {
return (byte[]) src;
} else if (src instanceof String) {
return charset == null ? ((String) src).getBytes() : ((String) src).getBytes(charset);
}
throw new UnsupportedOperationException(errorMsg);
}
public static class MessageSenderWrapper<T> {
private final MessageSender<T> sender;
private MessageSenderWrapper(MessageSender<T> sender) {
this.sender = sender;
}
public MessageSenderWrapper<T> addFormatter(MessageFormatter<Object> formatter) {
sender.formatters.add(formatter);
return this;
}
public MessageSenderWrapper<T> setSerializer(MessageSerializer<?> serializer) {
sender.serializer = serializer;
return this;
}
public MessageSenderWrapper<T> setEncryptor(Encryptor<?> encryptor, Object key, Charset charset, boolean encode2Base64) {
if (encryptor == null || key == null) {
throw new IllegalArgumentException("加密器和密鑰不能為空");
}
sender.encryptor = encryptor;
sender.key = key;
sender.charset = charset;
sender.encode2Base64WhenEncrypted = encode2Base64;
return this;
}
public MessageSender<T> wrap() {
return sender;
}
}
public static class MessageReceiverWrapper<T> {
private final MessageReceiver<T> receiver;
public MessageReceiverWrapper(MessageReceiver<T> receiver) {
this.receiver = receiver;
}
public MessageReceiverWrapper<T> addFormatter(MessageFormatter<Object> formatter) {
receiver.formatters.add(formatter);
return this;
}
public MessageReceiverWrapper<T> setDeserializer(MessageDeserializer<Object> deserializer, Class<T> type) {
receiver.deserializer = deserializer;
receiver.type = type;
return this;
}
public MessageReceiverWrapper<T> setDecipher(Decipher<?> decipher, Object key, Charset charset, boolean decodeBase642ByteArray) {
if (decipher == null || key == null) {
throw new IllegalArgumentException("解密器和密鑰不能為空");
}
receiver.decipher = decipher;
receiver.key = key;
receiver.charset = charset;
receiver.decode2Base64BeforeDecrypt = decodeBase642ByteArray;
return this;
}
public MessageReceiver<T> wrap() {
return receiver;
}
}
/**
* 狀態列舉，支持列舉標識修改
*
* @author Huang Yongxiang
* @date 2021/9/30 9:25
*/
public enum Code {
/**
* 請求成功
*/
OK("success", 200),
/**
* 服務器內部錯誤
*/
ERROR("error", 500),
/**
* 客戶端請求的語法錯誤，服務器無法理解
*/
BAD_REQUEST("bad request", 400),
/**
* 服務器理解請求客戶端的請求，但是拒絕執行此請求
*/
FORBIDDEN("Forbidden", 403),
/**
* 超時
*/
TIME_OUT("time out", 408),
/**
* 服務器無法根據客戶端請求的內容特性完成請求
*/
NOT_ACCEPTABLE("Not Acceptable", 406),
/**
* 服務器不支持請求的功能，無法完成請求
*/
NOT_SUPPORT("Not Implemented", 501),
/**
* 已接受，已經接受請求，但未處理完成
*/
ACCEPTED("Accepted", 202);
private String message;
private Integer flag;
Code(String message, Integer flag) {
this.message = message;
this.flag = flag;
}
public String getMessage() {
return message;
}
public Code setMessage(String message) {
this.message = message;
return this;
}
public Integer getFlag() {
return flag;
}
public Code setFlag(Integer flag) {
this.flag = flag;
return this;
}
@Override
public String toString() {
return "Code{" + "message='" + message + '\'' + ", flag=" + flag + '}';
}
}
private static class ClassCodec implements JsonSerializer<Class<?>>, JsonDeserializer<Class<?>> {
@Override
public Class<?> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
try {
String str = json.getAsString();
return Class.forName(str);
} catch (ClassNotFoundException e) {
throw new JsonParseException(e);
}
}
@Override
public JsonElement serialize(Class<?> src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src.getName());
}
}
private static class ProtoStuffUtil {
private static final ThreadLocal<LinkedBuffer> threadSafeBuffer = new ThreadLocal<>();
private static final Map<Class<?>, Schema<?>> schemaMap = new ConcurrentHashMap<>();
@SuppressWarnings("unchecked")
public static <T> byte[] serialize(T source) {
if (source == null) {
return null;
}
Class<T> clazz = (Class<T>) source.getClass();
Schema<T> schema = getSchema(clazz);
if (schema == null) {
throw new NullPointerException("無法獲取" + clazz + "的模式");
}
try {
if (threadSafeBuffer.get() == null) {
threadSafeBuffer.set(LinkedBuffer.allocate(LinkedBuffer.DEFAULT_BUFFER_SIZE));
}
return ProtostuffIOUtil.toByteArray(source, schema, threadSafeBuffer.get());
} finally {
threadSafeBuffer
.get()
.clear();
}
}
public static <T> T deserialize(byte[] data, Class<T> type) {
if (data =https://www.cnblogs.com/hyxl-top/archive/2023/03/28/= null || data.length == 0) {
return null;
}
Schema schema = getSchema(type);
if (schema == null) {
throw new NullPointerException("無法獲取" + type + "的模式");
}
T source = schema.newMessage();
ProtostuffIOUtil.mergeFrom(data, source, schema);
return source;
}
@SuppressWarnings("unchecked")
private static <T> Schema<T> getSchema(Class<T> clazz) {
Schema<T> schema = (Schema<T>) schemaMap.get(clazz);
if (schema == null) {
schema = RuntimeSchema.getSchema(clazz);
schemaMap.put(clazz, schema);
}
return schema;
}
}
可以增加一個main方法測驗
public static void main(String[] args) {
//直接獲取訊息
System.out.println(getJsonMessage(Code.OK, "請求成功"));
//構建更加復雜的訊息
System.out.println((String) newMessageBuilder()
//修改默認Code的標識
.code(Code.OK.setFlag(0))
.message("成功")
.addMsg("totalNum", 1000)
.getFinalMessage());
//對訊息加密
String message = "你好世界";
String en = BASE64_ENCRYPTOR.encrypt(AES_ENCRYPTOR.encrypt(message.getBytes(), "autoJob!@#=123.?"), null);
System.out.println("加密后：" + en);
System.out.println("解密后：" + new String(AES_DECIPHER.decrypt(BASE64_DECIPHER.decrypt(en.getBytes(), null), "autoJob!@#=123.?")));
System.out.println("/*=================創建可以復用的訊息發送器和接收器=================>*/");
//創建使用RSA加/解密的發送/接收器
KeyPair keyPair = RSA_ENCRYPTOR.generateKeyPair(2048);
MessageSender<String> sender = newMessageSenderWrapper(new MessageSender<String>())
//可以嘗試使用其他序列化器
.setSerializer(PROTO_STUFF_SERIALIZER)
//可以嘗試使用其他加密器
.setEncryptor(RSA_ENCRYPTOR, keyPair.getPublic(), Charset.defaultCharset(), true)
.wrap();
MessageReceiver<String> receiver = newMessageReceiverBuilder(new MessageReceiver<String>())
//必須和發送器序列化器對應
.setDeserializer(PROTO_STUFF_DESERIALIZER, String.class)
//必須和發送器加密器對應
.setDecipher(RSA_DECIPHER, keyPair.getPrivate(), Charset.defaultCharset(), true)
.wrap();
String msg = sender.getFinalMessage("你好世界");
System.out.println(msg);
System.out.println(receiver.getFinalMessage(msg));
System.out.println("/*=======================Finished======================<*/");
System.out.println("/*=================對發送器/接收器進行序列化保存=================>*/");
//序列化
byte[] senderContent = getMessage(sender, PROTO_STUFF_SERIALIZER);
byte[] receiverContent = getMessage(receiver, PROTO_STUFF_SERIALIZER);
//反序列化
MessageSender<String> savedSender = MessageSender.fromBytes(senderContent, PROTO_STUFF_DESERIALIZER);
MessageReceiver<String> savedReceiver = MessageReceiver.fromBytes(receiverContent, PROTO_STUFF_DESERIALIZER);
//反序列化后發送訊息
String sMsg = savedSender.getFinalMessage("你好世界");
System.out.println(sMsg);
System.out.println(savedReceiver.getFinalMessage(sMsg));
System.out.println("/*=======================Finished======================<*/");
}
}
{"code":200,"message":"請求成功"}
{"code":0,"totalNum":1000,"message":"成功"}
加密后：PXDEasQsDfG4Ca0WLdO4Sg==
解密后：你好世界
/*=================創建可以復用的訊息發送器和接收器=================>*/
YeKSWWdYPu4BK9gAehP5cYLhBcRPaGFN4qlC8mtieRCSNjBuqj9uLb2B4ca/FmYGOxHTYgikUZ2w
/ANc04Vrgz3isKF9VuA03hiW1oWpP3yIIROSji+ribhc6U0ihhelpqimrTQaaVi3mZ8AqrdPKGmM
KSrc/DaHZq/xMzCm1jlucPixm5Nss8Qk9u0lZltKzx8X6vjhaWmLonF7RXL76fiIq6dA45C6JbEG
33R87VMO0xYwIWenvPfwrELrJ/1fqoWFZIBCJWmrqIkulNW7REZqSkFd2pVwF+NH9abN5HH/QOl0
Y3kwRuazZtydkchw0s80WyP1CZ9lC/RK5HKQpQ==
你好世界
/*=======================Finished======================<*/
/*=================對發送器/接收器進行序列化保存=================>*/
lDUZdBYoU86AKilWY1ZdQR9SS/ud1xxnKyUDaKgoMRFLEQqEd2lnD7LDROSfqRNSGwG8ubQ37Db+
2FjiCYsZMoU9B41m5nhm96lu5sWJrhhVLN7zvjdW5G3i6xWuzQrI9S3RiXUCK2zYBh9r2CIm9iAM
mQ9VMZJKYewjKDJYta+hKGcKVg7/lJnX+lu8EmXLuKeCKymXycXHY3VMeURJZQrgLsz9qrQYw/4u
l1nREc2LsL9/TVP3un98XpjUJxTkeyYJ74iLti5FPP3WD+ObR3OTzEZ/9sZndTEKZYFOYlanqavR
hotfSDDTah108C9gNsnnxYUnUasNqF3xOgMETw==
你好世界
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