简介

为了高效传输，物联网项目通常采用了二进制协议来进行数据交换。

RkConverter库的目标是让开发从低效、重复、无技术含量的二进制报文解析中解放出来专注于业务和协议变化。

用法

字节数组转对象

蓝牙设备返回了设备信息字节数组为{82,75,52,49,48,48,0,68}数据交换解析协议为

只需要两步即可将字节数组转换为需要的对象

1、为DeviceInfo对象属性添加RkField注解描述解析规则

public class DeviceInfo {

    @RkField(position = 0,length = 6)
    private String model;

    @RkField(position = 6,length = 2)
    private int versionCode;

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public int getVersionCode() {
        return versionCode;
    }

    public void setVersionCode(int versionCode) {
        this.versionCode = versionCode;
    }
}

2、调用RkFieldConverter#bytes2entity方法使用字节数组设置DeviceInfo对象属性

byte[] bytes = new byte[]{82,75,52,49,48,48,0,68};
DeviceInfo mDeviceInfo = new DeviceInfo();
mDeviceInfo = RkFieldConverter.bytes2entity(mDeviceInfo,bytes);
assertEquals("RK4100",mDeviceInfo.getModel());
assertEquals(68,mDeviceInfo.getVersionCode());

对象转字节数组

调用RkFieldConverter#entity2bytes方法将对象转换成字节数组方便将数据写入蓝牙设备。

DeviceInfo mDeviceInfo = new DeviceInfo();
mDeviceInfo.setModel("RK4100");
mDeviceInfo.setVersionCode(68);
byte[] bytes = RkFieldConverter.entity2bytes(mDeviceInfo);
assertArrayEquals(new byte[]{82,75,52,49,48,48,0,68},bytes);

GitHub 项目地址

yuanzj/RkConverter

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