项目笔记：创建XML文件和导出功能

一、创建XML文件：

要生成的XML结构：

//创建文件夹
private void createFilePah(String path){
    File file = new File(path);
    if(!file.exists()){
        file.mkdirs();
    }
}

@Override
public void createXML() {
    try{
        Integer softLicBType = ;
        Integer softLicWType = ;//类型，判断来创建正版还是非正版
        //根据Type来获取非正版数据List
        List<GenuineSerialNumberManagement> softLicB =  genuineSerialNumberManagementDao.queryByType(softLicBType);
        String pathB = ReadConfigFileUtil.getValue(SystemStatics.ROOTDIR) + SystemStatics.PATH_PAW + File.separator+"genuineSerialNumberManagement";
        createFilePah(pathB);//判断文件夹路径是否存，不存在就创建文件夹
        String XMLPathB =pathB +File.separator + "SoftLicB.xml";//组合非正版文件路径
        List<GenuineSerialNumberManagement> softLicW =  genuineSerialNumberManagementDao.queryByType(softLicWType);
        String pathW = ReadConfigFileUtil.getValue(SystemStatics.ROOTDIR) + SystemStatics.PATH_PAW + File.separator+"genuineSerialNumberManagement";
        createFilePah(pathW);
        String XMLPathW = pathW+File.separator + "SoftLicW.xml";

        Document documentB = DocumentHelper.createDocument();//创建文件
        Element rootB = documentB.addElement("SoftLicB");//创建文件根目录
        List<Integer> ss = new ArrayList<Integer>();//声明一个空List用于保存softId，当softId已经写过一次时，就不再写而是写它下级的东西
        for (GenuineSerialNumberManagement type : softLicB){
            if(!ss.contains(type.getSoftId())){//如果不存在就增加进去
                ss.add(type.getSoftId());
                Element softWare = rootB.addElement("Software");//二级目录，二级目录里面有SoftId和DisplayName
                softWare.addAttribute("SoftId", type.getSoftId().toString());
                softWare.addAttribute("DisplayName", type.getSoftDisplayName());
                //根据type和softId来获取数据list，因为同一个softId下面的东西需要在三级目录上
                List<GenuineSerialNumberManagement> softIdB =  genuineSerialNumberManagementDao.queryBySoftIdAndType(type.getSoftId(),softLicBType);
                for(GenuineSerialNumberManagement soft : softIdB){
                    Element license = softWare.addElement("license");//三级目录，三级目录里面有Version和value
                    license.addAttribute("Version", soft.getVersion());
                    license.addAttribute("value", soft.getSerialNumber());
                }
            }else{
                continue;
            }
        }
        XMLUtil.writeXml(documentB, XMLPathB);//在路径下写入文件

        Document documentW = DocumentHelper.createDocument();
        Element rootW = documentW.addElement("SoftLicW");
        List<Integer> ww = new ArrayList<Integer>();
        for(GenuineSerialNumberManagement type : softLicW){
            if(!ww.contains(type.getSoftId())){
                ww.add(type.getSoftId());
                Element softWare = rootW.addElement("Software");
                softWare.addAttribute("SoftId", type.getSoftId().toString());
                softWare.addAttribute("DisplayName", type.getSoftDisplayName());
                List<GenuineSerialNumberManagement> softIdW = genuineSerialNumberManagementDao.queryBySoftIdAndType(type.getSoftId(), softLicWType);
                for(GenuineSerialNumberManagement soft : softIdW){
                    Element license = softWare.addElement("license");
                    license.addAttribute("Version", soft.getVersion());
                    license.addAttribute("value", soft.getSerialNumber());
                }
            }else{
                continue;
            }
        }
        XMLUtil.writeXml(documentW, XMLPathW);
    }catch(Exception e){
        e.printStackTrace();
    } catch (Throwable e) {
        e.printStackTrace();
    }
}

我们看下与数据库交互的queryBySoftIdAndType

　　@SuppressWarnings("unchecked")
    @Override
    public List<GenuineSerialNumberManagement> queryBySoftIdAndType(Integer softId,Integer type) {
        return this.getSession().createQuery(" FROM " + this.clazz.getName() + " this WHERE this.softId =(:softId) AND this.type =(:type)")
                .setParameter("softId", softId)
                .setParameter("type", type)
                .list();
    }

然后调用该方法即可生成XML

//自动生成xml
genuineSerialNumberManagementService.createXML();

二、导出功能：

<form id="export_serialNumber" action="" style="padding: 0; margin: 0;" method="post" target="_blank">
    <input type="hidden" id="exportType" name="genuineSerialNumberManagement.type" value="" />
</form>

　　//导出规则库
    function exportSerialNumber(){
        var currentType = $("input[name='serialNumber']:checked").val();
        if (currentType == "") {
            showMsg("系统提示", "请选择要导出的类型！", false);
            return;
        }
        if ($.checkSession()) {
            var $form = $("#export_serialNumber");
            var action = "";
            try {
                $("#exportType").val(currentType);
                action = $form.attr("action");
                $form.attr("action", "${basePath}/genuineSerialNumberManagementAction_export.do").submit();
            } finally {
                $form.attr("action", action);
            }
        }
    }

注意form表单里需要加个input隐藏域用于传type值

　　//导出规则库
    public String export() {
        log.info("【正版序列号管理--导出规则库：开始】");
        try {
            if (genuineSerialNumberManagement != null) {
                String filePath = ReadConfigFileUtil.getValue(SystemStatics.ROOTDIR) + SystemStatics.PATH_PAW + File.separator+"genuineSerialNumberManagement\\";
                // 为下载 做 准备
                String fileName = null;
                if(genuineSerialNumberManagement.getType()!=null && genuineSerialNumberManagement.getType() == ){
                    fileName = "SoftLicB.xml";
                }
                if(genuineSerialNumberManagement.getType()!=null && genuineSerialNumberManagement.getType() == ){
                    fileName = "SoftLicW.xml";
                }
                ActionContext.getContext().put("fileName", fileName);
                ActionContext.getContext().put("filePath", filePath + fileName);
            }
            log.info("【正版序列号管理--导出规则库：结束】");
            return RETURN_DOWNLOADUI;
        } catch (Exception e) {
            log.error("【正版序列号管理--导出规则库：失败】", e);
            return null;
        }
    }