Crisis-rpc之三传输对象与序列化

来源：互联网发布：省市区县json 编辑：程序博客网时间：2024/05/21 22:51

Crisis-rpc项目链接:https://github.com/JeremieAstray/crisis-rpc
这一篇博客讲的是Crisis-rpc如何定义rpc传输的对象，参数定义，序列化的方式等。

一、传输对象的定义

传输对象分为二个RpcInvocation和RpcResult。
RpcInvocation包含了服务的id、服务名、服务要调用的类、调用的方法、返回参数类型、调用的类型和调用的参数。
RpcResult包含了服务的id、服务名、调用状态、返回的对象或者Exception。
代码如下：

public class RpcInvocation implements Serializable {    private String clientId;    private String destClazz;    private String method;    private Class[] paramsType;    private Object[] params;    private Class returnType;    private String serverName;}

public class RpcResult implements Serializable {    private String clientId;    private Status status;    private Object returnPara;    private Exception exception;    private String serverName;}

二、序列化工具

Crisis-rpc使用Java的序列化方式对对象进行序列化，这里拆成两种，将对象序列化为字节数组和字符串以及其反序列化。

public class SerializeTool {    private static final Logger logger = LoggerFactory.getLogger(SerializeTool.class);    //对象序列化为字符串    public static String objectToString(Object object) {        ByteArrayOutputStream byteArrayOutputStream = null;        ObjectOutputStream objectOutputStream = null;        try {            byteArrayOutputStream = new ByteArrayOutputStream();            objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);            objectOutputStream.writeObject(object);            objectOutputStream.flush();            return byteArrayOutputStream.toString("ISO-8859-1");        } catch (IOException e) {            logger.error("objectToString error", e);        } finally {            try {                if (objectOutputStream != null)                    objectOutputStream.close();                if (byteArrayOutputStream != null)                    byteArrayOutputStream.close();            } catch (IOException e) {                logger.error("close stream error", e);            }        }        return null;    }    //字符串反序列化为对象    public static Object stringToObject(String string) {        ByteArrayInputStream byteArrayInputStream = null;        ObjectInputStream objectInputStream = null;        try {            byte[] objectBytes = string.getBytes("ISO-8859-1");            byteArrayInputStream = new ByteArrayInputStream(objectBytes);            objectInputStream = new ObjectInputStream(byteArrayInputStream);            return objectInputStream.readObject();        } catch (IOException | ClassNotFoundException e) {            logger.error("stringToObject error", e);        } finally {            try {                if (objectInputStream != null)                    objectInputStream.close();                if (byteArrayInputStream != null)                    byteArrayInputStream.close();            } catch (IOException e) {                logger.error("close stream error", e);            }        }        return null;    }    //字节数组反序列化为对象    public static Object byteArrayToObject(byte[] byteArray) throws EOFException {        ByteArrayInputStream byteArrayInputStream = null;        ObjectInputStream objectInputStream = null;        try {            byteArrayInputStream = new ByteArrayInputStream(byteArray);            objectInputStream = new ObjectInputStream(byteArrayInputStream);            return objectInputStream.readObject();        } catch (EOFException e) {            throw e;        } catch (IOException | ClassNotFoundException e) {            logger.error("byteArrayToObject error", e);        } finally {            try {                if (objectInputStream != null)                    objectInputStream.close();                if (byteArrayInputStream != null)                    byteArrayInputStream.close();            } catch (IOException e) {                logger.error("close stream error", e);            }        }        return null;    }    //对象序列化为字节数组    public static byte[] objectToByteArray(Object object) {        ByteArrayOutputStream byteArrayOutputStream = null;        ObjectOutputStream objectOutputStream = null;        try {            byteArrayOutputStream = new ByteArrayOutputStream();            objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);            objectOutputStream.writeObject(object);            objectOutputStream.flush();            return byteArrayOutputStream.toByteArray();        } catch (IOException e) {            logger.error("objectToByteArray error", e);        } finally {            try {                if (objectOutputStream != null)                    objectOutputStream.close();                if (byteArrayOutputStream != null)                    byteArrayOutputStream.close();            } catch (IOException e) {                logger.error("close stream error", e);            }        }        return null;    }}

总结

这一部分我自己定义了rpc的传输对象和序列化方式。
其实，这里写的序列化方式不是十分的完善，序列化的方式过于暴力，而且这样子序列化传输数据会有安全问题（局域网内部的话其实可以忽略），因此后面也需要继续对其进行优化。

Crisis-rpc项目链接:https://github.com/JeremieAstray/crisis-rpc

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