primefaces 数据表导出器

Question

在 XHTML 页面中支持多种语言。我使用数据表显示数据，例如：

<p:column style="text-align:center; width:7%;" exportPosition="center">
      <f:facet name="header">
           <h:outputText value="#{msg['common']['identityIssuePlace']}" />
      </f:facet>
      <h:outputText value="#{element.getLocalizedName(bean.locale)}" />
</p:column>

它显示正常。但我使用dataExporter 导出数据会引发异常：

avax.el.PropertyNotFoundException: /backend/gms/account-manage.xhtml at line 170 and column 109 value="#{element.getLocalizedName(bean.locale)}": Property 'getLocalizedName' not found on type safp.acms.common.domain.IdentityIssuePlace

dataExporter不能绑定方法？谢谢高级。

Answer 1

我用这个解决了

Xhtml代码：

<p:commandButton image="ui-icon-xls" styleClass="botonExcel" value="mylabel" ajax="false">                              
   <p:dataExporter type="xls" target=":formEditar:tablaEditar" fileName="myFilename"  postProcessor="#{parametrosMB.postProcessXLS}" />  
</p:commandButton> 

Java 代码：

  public void postProcessXLS(Object document) {
        HSSFWorkbook wb = (HSSFWorkbook) document;
        HSSFSheet sheet = wb.getSheetAt(0);

        //Loop for all datafiles 
        //(sheet.getLastRowNum() + 1) => because file 0 is a header
        for (int i = 0; i < sheet.getLastRowNum() + 1; i++) {
            HSSFRow header = sheet.getRow(i);              

            //Loop for each cell
            for (int j = 0; j < header.getPhysicalNumberOfCells(); j++) {
                HSSFCell cell = header.getCell(j);                    

                //Here you need verify the cell to change value and assign new value
                cell.setCellValue("the new value!!");
            }
        }
    }

灵感来自：http://www.primefaces.org/showcase/ui/data/dataexporter/customizedDocuments.xhtml

对不起我的英语不好

Answer 2

解决了！！！！

有了这个p:dataExporter does not recognize p:cellEditor

我的解决方案太相似了，只改变了一个函数“exportValue”和扩展类。

Xhtml:

 <h:commandLink value="Excel" action="#{myBean.exportExcel(table, 'filename')}" />

<p:dataTable id="tablaDatos" binding="#{table}" etc...> 
<!-- data -->
</p:dataTable>

bean 上的方法：

public void exportExcel(DataTable table, String filename) throws IOException {
    FacesContext context = FacesContext.getCurrentInstance();
    MyExporterXls exporter = new MyExporterXls();
    exporter.export(context, table, filename, false, false, "UTF-8", null, null);
    context.responseComplete();
}

我的解决方案

public class MyExporterXls extends ExcelExporter {

    @Override
    protected String exportValue(FacesContext fc, UIComponent uic) {
        String valor = "";
        System.out.println("uic = " + uic);

        if (uic instanceof HtmlOutputText) {
            valor = parseValorCelda(((HtmlOutputText) uic).getValue());
        }
        return valor;           
    }

    private String parseValorCelda(Object valor) {
        String retorno = "";

        //Cadenas
        if (valor instanceof String) {
            retorno = (String) valor;
        }

        //Numeros ENTEROS
        if (valor instanceof Short) {
            retorno = ((Short) valor).toString();
        }

        if (valor instanceof Integer) {
            retorno = ((Integer) valor).toString();
        }

        if (valor instanceof BigInteger) {
            retorno = ((BigInteger) valor).toString();
        }

        if (valor instanceof Long) {
            retorno = ((Long) valor).toString();
        }

        //Numeros decimales
        if (valor instanceof Double) {
            retorno = ((Double) valor).toString();
        }

        if (valor instanceof Float) {
            retorno = ((Float) valor).toString();
        }

        if (valor instanceof BigDecimal) {
            retorno = ((BigDecimal) valor).toString();
        }

        return retorno;
    }

}

Answer 3

很久没有问这个问题了，@dmnoguera 给出的唯一答案对我来说并不满意。

实际上，primefaces 的dataExporter 似乎不支持绑定方法。但是我是如何解决这个问题的：

这是我在 dataTable 中可导出的列：

<p:column>
    <f:facet name="header">
        <h:outputText value="#{messages['portfolioOfUser']}" />
    </f:facet>
    <h:outputText id="portfoliosOfUser"
        value="#{editPortfolio.portfoliosOfUser(listCustomerTableRow)}"
        escape="false" />
</p:column>

这是我的 Bean：

public class EditPortfolioManagedBean extends EnhancedManagedBean {

    private String portfoliosOfUser ;

    public String getPortfoliosOfUser() {
        return "Coucou";
    }

    public void setPortfoliosOfUser(String portfoliosOfUser) {
        this.portfoliosOfUser = portfoliosOfUser;
    }

//Cool stuf - Start
...
//Cool stuf - End

public String portfoliosOfUser(Customer customer)
    {
        String listOfPortfolios = new String("");

        //Really sexy computation and high level algorithms

        return listOfPortfolios;

    }
}

这样我欺骗了dataExporter，当我导出表格时，我得到了portfoliosOfUser(Customer customer) 给出的String，而不是“Coucou”。希望对其他人有用！