feat(Property): 优化定时任务执行逻辑并添加时间限制
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@@ -9,6 +9,8 @@ import java.io.IOException;
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import java.net.Socket;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.ArrayList;
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import java.util.List;
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import static com.ghgande.j2mod.modbus.Modbus.WRITE_SINGLE_REGISTER;
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@@ -24,9 +26,8 @@ public class LightingUtil {
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private static final int MODBUS_PORT = 502;
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// 功能码03(读保持寄存器)
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private static final byte FUNCTION_CODE = 0x03;
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// 采集寄存器范围(协议地址)
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private static final int START_ADDRESS = 42; // 40043 - 40001 = 42
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private static final int REGISTER_COUNT = 4; // 40046 - 40043 + 1 = 4
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// Modbus协议一次最多读取的寄存器数量
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private static final int MAX_REGISTERS_PER_REQUEST = 63;
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private Socket socket;
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private DataInputStream input;
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@@ -70,78 +71,6 @@ public class LightingUtil {
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return header;
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}
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/**
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* 读取40043-40046寄存器数据
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*
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* @return 包含4个寄存器值的int数组
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*/
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public int[] readRegisters() throws IOException {
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// 发送读取请求
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sendRequest();
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// 接收并解析响应
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return parseResponse();
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}
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/**
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* 构造并发送Modbus TCP请求帧
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*/
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private void sendRequest() throws IOException {
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// 事务ID(递增)
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int currentTransactionId = transactionId++;
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// 创建请求帧(12字节)
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ByteBuffer buffer = ByteBuffer.allocate(12)
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.order(ByteOrder.BIG_ENDIAN);
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// Header(7字节)
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buffer.putShort((short) currentTransactionId); // 事务ID
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buffer.putShort((short) 0); // 协议ID(0=Modbus)
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buffer.putShort((short) 6); // 长度(后续字节数)
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buffer.put((byte) 1); // 单元ID
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// PDU(协议数据单元)
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buffer.put(FUNCTION_CODE); // 功能码
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buffer.putShort((short) START_ADDRESS); // 起始地址
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buffer.putShort((short) REGISTER_COUNT); // 寄存器数量
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output.write(buffer.array());
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output.flush();
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}
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/**
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* 解析Modbus TCP响应
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*/
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private int[] parseResponse() throws IOException {
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// 读取头(7字节)
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byte[] header = initParse();
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// 读取PDU(协议数据单元)
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int pduLength = ByteBuffer.wrap(header, 4, 2)
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.getShort() & 0xFFFF - 1; // 减去单元ID长度
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byte[] pdu = new byte[pduLength];
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input.readFully(pdu);
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// 检查异常响应(功能码高位为1)
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if ((pdu[0] & 0xFF) == (FUNCTION_CODE | 0x80)) {
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throw new IOException("Modbus异常响应,错误码: " + (pdu[1] & 0xFF));
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}
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// 验证功能码和字节数
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if (pdu[0] != FUNCTION_CODE || pdu[1] != REGISTER_COUNT * 2) {
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throw new IOException("无效响应格式");
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}
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// 提取寄存器数据(每个寄存器2字节)
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int[] values = new int[REGISTER_COUNT];
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for (int i = 0; i < REGISTER_COUNT; i++) {
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int offset = 2 + i * 2;
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values[i] = ByteBuffer.wrap(pdu, offset, 2)
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.order(ByteOrder.BIG_ENDIAN).getShort() & 0xFFFF;
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}
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return values;
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}
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/**
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* 写单个保持寄存器(功能码06)
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*
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@@ -214,5 +143,128 @@ public class LightingUtil {
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return true;
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}
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/**
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* 读取指定数量的开关状态
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*
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* @param startAddress 起始地址(协议地址)
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* @param switchCount 开关数量
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* @return 包含所有开关状态的int数组,每个元素代表一个开关的状态
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* @throws IOException 如果读取过程中发生IO错误
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*/
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public int[] readSwitchStatus(int startAddress, int switchCount) throws IOException {
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// 如果开关数量超过单次请求限制,分批读取
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if (switchCount > MAX_REGISTERS_PER_REQUEST) {
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return readSwitchStatusBatch(startAddress, switchCount);
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}
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// 发送读取请求
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sendCustomRequest(startAddress, switchCount);
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// 接收并解析响应
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return parseCustomResponse(switchCount);
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}
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/**
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* 分批读取大量开关状态
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*/
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private int[] readSwitchStatusBatch(int startAddress, int totalSwitchCount) throws IOException {
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List<Integer> allValues = new ArrayList<>();
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int remaining = totalSwitchCount;
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int currentAddress = startAddress;
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while (remaining > 0) {
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int batchSize = Math.min(remaining, MAX_REGISTERS_PER_REQUEST);
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// 发送读取请求
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sendCustomRequest(currentAddress, batchSize);
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// 接收并解析响应
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int[] batchValues = parseCustomResponse(batchSize);
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// 添加到结果列表
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for (int value : batchValues) {
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allValues.add(value);
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}
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// 更新剩余数量和当前地址
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remaining -= batchSize;
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currentAddress += batchSize;
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// 添加小延迟,避免请求过快
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try {
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Thread.sleep(10);
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} catch (InterruptedException e) {
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Thread.currentThread().interrupt();
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throw new IOException("读取过程被中断", e);
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}
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}
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// 转换为数组返回
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int[] result = new int[allValues.size()];
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for (int i = 0; i < allValues.size(); i++) {
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result[i] = allValues.get(i);
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}
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return result;
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}
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/**
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* 构造并发送自定义Modbus TCP请求帧
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*/
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private void sendCustomRequest(int startAddress, int registerCount) throws IOException {
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// 事务ID(递增)
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int currentTransactionId = transactionId++;
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// 创建请求帧(12字节)
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ByteBuffer buffer = ByteBuffer.allocate(12)
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.order(ByteOrder.BIG_ENDIAN);
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// Header(7字节)
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buffer.putShort((short) currentTransactionId); // 事务ID
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buffer.putShort((short) 0); // 协议ID(0=Modbus)
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buffer.putShort((short) 6); // 长度(后续字节数)
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buffer.put((byte) 1); // 单元ID
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// PDU(协议数据单元)
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buffer.put(FUNCTION_CODE); // 功能码
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buffer.putShort((short) startAddress); // 起始地址
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buffer.putShort((short) registerCount); // 寄存器数量
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output.write(buffer.array());
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output.flush();
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}
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/**
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* 解析自定义Modbus TCP响应
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*/
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private int[] parseCustomResponse(int expectedRegisterCount) throws IOException {
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// 读取头(7字节)
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byte[] header = initParse();
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// 读取PDU(协议数据单元)
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int pduLength = ByteBuffer.wrap(header, 4, 2)
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.getShort() & 0xFFFF - 1; // 减去单元ID长度
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byte[] pdu = new byte[pduLength];
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input.readFully(pdu);
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// 检查异常响应(功能码高位为1)
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if ((pdu[0] & 0xFF) == (FUNCTION_CODE | 0x80)) {
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throw new IOException("Modbus异常响应,错误码: " + (pdu[1] & 0xFF));
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}
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// 验证功能码和字节数
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if (pdu[0] != FUNCTION_CODE || pdu[1] != expectedRegisterCount * 2) {
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throw new IOException("无效响应格式");
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}
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// 提取寄存器数据(每个寄存器2字节)
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int[] values = new int[expectedRegisterCount];
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for (int i = 0; i < expectedRegisterCount; i++) {
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int offset = 2 + i * 2;
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values[i] = ByteBuffer.wrap(pdu, offset, 2)
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.order(ByteOrder.BIG_ENDIAN).getShort() & 0xFFFF;
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}
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return values;
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}
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}
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