package com.ruoyi.fuzhou.utils.hj1239;
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import java.nio.charset.StandardCharsets;
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/**
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* 数据封装
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*/
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public class ProtocolDataEncoder {
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public static final byte START_FLAG = 0x01;
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public static final byte END_FLAG = 0x02;
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public static byte[] encodeData(String data) {
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byte[] dataBytes = data.getBytes(StandardCharsets.UTF_8);
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byte checksum = calculateChecksum(dataBytes);
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byte[] frame = new byte[2 + dataBytes.length + 1];
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frame[0] = START_FLAG;
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System.arraycopy(dataBytes, 0, frame, 1, dataBytes.length);
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frame[frame.length - 2] = checksum;
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frame[frame.length - 1] = END_FLAG;
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return frame;
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}
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public static byte calculateChecksum(byte[] data) {
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byte sum = 0;
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for (byte b : data) {
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sum += b;
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}
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return sum;
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}
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}
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