Vertx 实现webapi实战项目(二)

 

消息解析：消息序列化和反序列化---上传json解析和返回json编码。

整理下工程项目

一：实现消息接口，在imp文件夹下新建接口MessageFactory

/******
 * 消息编码/解码
 * *******/
public interface MessageFactory {
    void decode(short apiCode, JsonObject body, HttpServerRequest request);

    void encode();
}

二：实现一个主类

public abstract class AbstractMessage implements MessageFactory{
    protected JsonObject bodyData;

    protected short messageId = -1;

    //上传json解析
    @Override
    public void decode(short mId,JsonObject body, HttpServerRequest request){
        this.bodyData = body;

        messageId = mId;

        decodeMessage();
    }

    //返回json编码
    @Override
    public void encode(){
        encodeMessage();
    }

    protected abstract void decodeMessage();

    protected abstract void encodeMessage();

    public static JsonObject decodeUpMessage(Buffer body){
        if(body == null)
            return null;

        try {
            return body.toJsonObject();
        }catch (DecodeException es){
            return null;
        }
    }
}

三：实现json解码和编码

//上传json解码
public abstract class AbstractUpMessage extends AbstractMessage{
    @Override
    protected void decodeMessage() {
        decodeBody();
    }

    @Override
    protected void encodeMessage() {}

    protected abstract void decodeBody();
}

//返回json编码
public abstract class AbstractDownMessage extends AbstractMessage  {
    protected int resultCode;

    public AbstractDownMessage(){
        bodyData = new JsonObject();
    }

    @Override
    protected void decodeMessage() {

    }
    @Override
    protected void encodeMessage(){
        bodyData.put("mId",messageId);
        bodyData.put("code",resultCode);

        encodeBody();
    }

    protected abstract void encodeBody();

    public String SendMessage (){
        return bodyData.encode();
    }
}

到此消息解析完成