程序启动时加载-@PostConstruct

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public static Map<String, String>commandMap= null;

// 项目启动时加载该方法
@PostConstruct
private void start() {
    if (commandMap!= null) {
        return;
    }
    List<DeviceCommand> deviceCmds = sqlManager.lambdaQuery(DeviceCommand.class).select("name", "command");
commandMap= new HashMap<>();
    for (DeviceCommand deviceCmd : deviceCmds) {
        DeviceCommandLogService.commandMap.put(deviceCmd.getCommand(), deviceCmd.getName());
    }
}

程序结束时加载-@PostConstruct
。。。