重构这段代码 private void automaticDispatch(JointCase jointCase) { if (EmptyUtils.isNotEmpty(jointCase) && EmptyUtils.isNotEmpty(jointCase.getCaseSmallType())) { BaseHandleTimeDetailsResponse baseHandleTimeDetailsResponse = baseHandleTimeHelper.getBaseHandleTimeDetailsResponse(jointCase.getCaseSmallType()); if (EmptyUtils.isNotEmpty(baseHandleTimeDetailsResponse) && DispatchTypeEnum.AUTOMATIC_DISPATCH_TYPE.getCode().equals(baseHandleTimeDetailsResponse.getDispatchType()) && CollectionTypeEnum.SELF_EXAMINATION_TYPE.getCode() != jointCase.getCollectionType()) { int handleTime = baseHandleTimeDetailsResponse.getHandleDays() * JointCommandConstants.HOURS * JointCommandConstants.MINUTE * JointCommandConstants.SECOND + baseHandleTimeDetailsResponse.getHandleHours() * JointCommandConstants.MINUTE * JointCommandConstants.SECOND + baseHandleTimeDetailsResponse.getHandleMinute() * JointCommandConstants.SECOND; List<String> assistDeptCodes = ClassCastUtils.toList(baseHandleTimeDetailsResponse.getAssistDeptCode(), SymbolConstants.COMMA.getSymbol()); JointCommandCaseDispatchAddRequest dispatchAddRequest = JointCommandCaseDispatchAddRequest.builder().jointCaseId(jointCase.getId()).dispatchRemarks(JointCommandConstants.DISPATCH_SLOGAN) .handleTime(handleTime).mianDeptCode(baseHandleTimeDetailsResponse.getMainDeptCode()).assistDeptCodeList(assistDeptCodes).version(GeneralConstants.NUMBER_ZERO).build(); approvalProcessService.submitFirstDispatch(dispatchAddRequest); } } }

这段代码的主要问题在于可读性较差，存在一些魔法数字和硬编码的部分，同时也有一些过长的方法调用链，影响了代码的可维护性和可扩展性。下面是一个重构后的代码示例：

private void automaticDispatch(JointCase jointCase) {
    if (jointCase == null || jointCase.getCaseSmallType() == null) {
        return;
    }
    
    BaseHandleTimeDetailsResponse handleTimeDetails = baseHandleTimeHelper.getBaseHandleTimeDetailsResponse(jointCase.getCaseSmallType());
    if (handleTimeDetails == null || !DispatchTypeEnum.AUTOMATIC_DISPATCH_TYPE.getCode().equals(handleTimeDetails.getDispatchType())) {
        return;
    }
    
    if (CollectionTypeEnum.SELF_EXAMINATION_TYPE.getCode() == jointCase.getCollectionType()) {
        return;
    }
    
    int handleTimeInSeconds = convertHandleTimeToSeconds(handleTimeDetails);
    List<String> assistDeptCodes = convertAssistDeptCodesToList(handleTimeDetails.getAssistDeptCode());
    
    JointCommandCaseDispatchAddRequest dispatchRequest = JointCommandCaseDispatchAddRequest.builder()
            .jointCaseId(jointCase.getId())
            .dispatchRemarks(JointCommandConstants.DISPATCH_SLOGAN)
            .handleTime(handleTimeInSeconds)
            .mianDeptCode(handleTimeDetails.getMainDeptCode())
            .assistDeptCodeList(assistDeptCodes)
            .version(GeneralConstants.NUMBER_ZERO)
            .build();
    
    approvalProcessService.submitFirstDispatch(dispatchRequest);
}

private int convertHandleTimeToSeconds(BaseHandleTimeDetailsResponse handleTimeDetails) {
    int handleDaysInSeconds = handleTimeDetails.getHandleDays() * JointCommandConstants.HOURS * JointCommandConstants.MINUTE * JointCommandConstants.SECOND;
    int handleHoursInSeconds = handleTimeDetails.getHandleHours() * JointCommandConstants.MINUTE * JointCommandConstants.SECOND;
    int handleMinutesInSeconds = handleTimeDetails.getHandleMinute() * JointCommandConstants.SECOND;
    return handleDaysInSeconds + handleHoursInSeconds + handleMinutesInSeconds;
}

private List<String> convertAssistDeptCodesToList(String assistDeptCodes) {
    if (StringUtils.isBlank(assistDeptCodes)) {
        return Collections.emptyList();
    }
    return Arrays.asList(assistDeptCodes.split(SymbolConstants.COMMA.getSymbol()));
}

重构后的代码中，我们将原来的多个 if 判断合并成了一个顺序执行的逻辑，这样可以提高代码的可读性。我们还将一些常量提取成了静态变量或方法，这样可以避免硬编码和魔法数字。此外，我们还将一些过长的方法调用链拆分成了多个方法，提高了代码的可维护性和可扩展性。