Question

我有managedBean fileUpload，一旦文件被上传，我需要根据从解析器下拉列表中选择的值调用不同的解析器，然后在解析器中创建{{1}的对象在那里调用该特定类的DetailsClass方法，这里需要注意的是，在faces-config.xml中没有注册getDetails和parserClass，我的问题是

如果我想保持从DetailsClass班级到FileUpload班级到Parser的会话信息，那么我应该在DetailsClass中对其进行定义，但应该如何faces-config.xml如果将parser定义为DetailsClass或其他类似内容，则定义类managedBean

以下是代码：

在我的managedBean类中，我有两个函数fileUpload和callParser，如下所示：

 public void uploadFile(FileEntryEvent event)
{
    FacesContext ctx = FacesContext.getCurrentInstance();
    //Setting getSession to false, container will not create new session if session is not present and return null
    HttpSession session = (HttpSession) ctx.getExternalContext().getSession(false);
    setSession(session);

    resultBean = new ResultBean();
    FileEntry fileEntry = (FileEntry) event.getSource();
    FileEntryResults results = fileEntry.getResults();
    FileEntry fe = (FileEntry) event.getComponent();

    FacesMessage msg = new FacesMessage();
    for (FileEntryResults.FileInfo fileInfo : results.getFiles())
    {
        if (fileInfo.isSaved())
        {
            File file = fileInfo.getFile();
            String filePath = file.getAbsolutePath();
            callParser(selectedItem, filePath);
        }
        resultBeanList.add(resultBean);
    }
}

private void callParser(String parserType, String filePath)
{
    if ("Delta".equals(parserType))
    {
        PositionParserDelta deltaParser = new PositionParserDelta();
        deltaParser.getQuotes(filePath);
    }
    else if ("Gamma".equals(parserType))
    {
        PositionParserGamma gammaParser = new PositionParserGamma();
        gammaParser.getQuotes(filePath);
    }
}

现在，我们假设我们考虑Delta Parser，所以在那个课程中我有类似的东西：

public class PositionParserDelta extends Base
{
    List<String[]> dataList = new ArrayList<String[]>();
    ContractManager contractManager = new ContractManager();

    public PositionParserDelta()
    {
    }

    public void getQuotes(String fileName)
    {
        try
        {
            Map<String, ContractSeries> gsLookup = contractManager.getContractsMap(ContractManager.VendorQuotes.KRT);
            CSVReader reader = new CSVReader(new FileReader(fileName), '\t');
            String[] header = reader.readNext();
            dataList = reader.readAll();
            List<Trade> tradeBeanList = new ArrayList<Trade>();
            for (String[] data : dataList)
            {
                //Some Business Logic
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

我的contractManager班级似乎是

    public class ContractManager extends Base
    {
        private List<Series> List = new ArrayList<Series>();
        private ContractSeries[] SeriesList = new Series[3];
        private ListingOps listingOps;

//This line throws error as faces class not found and it makes sense because am not registering this with faces-config.xml
        HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);

        public List<ContractSeries> getContracts(long orgId, HttpSession session)
        {
            log.info("Inside getContracts method call");
            if (false)
            {
                //Some Logic
            }
            else
            {
                try
                {
                    //Set session and get initialContext to retrieve contractSeries data from ejb calls
                    log.info("Trying to get allContractSeries data from listingOpsBean");
                    Series[] allSeries = deltaOps.findAllSeries(true);
                    Collections.addAll(contractList, allContractSeries);
                }
                catch (Exception ex)
                {

                }
            }
            return contractList;
        }

        public Map<String, ContractSeries> getContractsMap(VendorQuotes vendorQuotes)
        { //Some Logic
    }

但是在faces-config.xml文件中，

 <managed-bean>
        <managed-bean-name>fileUpload</managed-bean-name>
        <managed-bean-class>trade.UploadBlotterBean</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
</managed-bean>

基本上我的问题是，

如果假设我正在调用来自managedBean的其他类，那该怎么办？它们在faces-config.xml中定义，因为我是JSF的新手，是从managedBean调用其他类并开展业务这些课程中的逻辑被认为是良好实践吗？

另外，我需要确保我在UploadFile和Parser课程ContractMapping中保持会话。

另外，

在faces-config中，所有内容都被“注册”为managed-bean吗？

Answer 1

不确定，但我认为每个bean都在<managed-bean>中注册为faces-config。关于特定角色，一个类玩，它们可以分类为

Model Managed-Bean
支持Managed-Bean
Controller Managed-Bean
支持Managed-Bean
Utility Managed-Bean ...

通过给出适当的名称，您可以在faces-config中区分它们。根据bean提供的工作，设置范围。

JSF：ManagedBean，处理业务逻辑的好地方？

1 个答案: