java - 无法在 primefaces 数据表中显示静态 int 变量

Question

我正在使用 primefaces 数据表来显示我的数据这是我的代码:

<p:dataTable id="tab6" var="comp" value="#{excelReport.report6}" rendered="#{excelReport.date != null}">
                    <f:facet name="header">  
                        <h:outputText value="heading text"/> 
                    </f:facet>
                    <p:columnGroup type="header">
                        <p:row>
                            <p:column headerText="Sr No" />
                            <p:column headerText="Years" />
                            <p:column headerText="Quarter no." />
                            <p:column headerText="POL" />
                            <p:column headerText="LPG" />
                            <p:column headerText="AVIATION" />
                            <p:column headerText="LUBES" />
                            <p:column headerText="OTHERS" />
                        </p:row>
                    </p:columnGroup>
                    <p:column><h:outputText value="#{comp.serialNo}" /> </p:column>
                    <p:column><h:outputText value="#{comp.quarterRange}" /></p:column>
                    <p:column><h:outputText value="#{comp.quarterNumber}" /></p:column>
                    <p:column><h:outputText value="#{comp.pol}" /></p:column>
                    <p:column><h:outputText value="#{comp.lpg}" /></p:column>
                    <p:column><h:outputText value="#{comp.aviation}" /></p:column>
                    <p:column><h:outputText value="#{comp.lubes}" /></p:column>
                    <p:column><h:outputText value="#{comp.others}" /></p:column>    
                    <p:columnGroup type="footer">
                        <p:row>
                            <p:column footerText="Total" colspan="3"/>
                            <p:column footerText="#{comp.polTotal}"/>
                            <p:column footerText="#{comp.lpgTotal}"/>
                            <p:column footerText="#{comp.aviationTotal}"/>
                            <p:column footerText="#{comp.lubesTotal}"/>
                            <p:column footerText="#{comp.othersTotal}"/>
                        </p:row>
                    </p:columnGroup>
                </p:dataTable>

一切正常，只是我的页脚行中没有任何数据。我试图在我的 footerText 中显示 int 类型的静态变量。

这里是 bean 类:

package dao;

import java.io.Serializable;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class Excel_Target_Compliance implements Serializable {

    public Excel_Target_Compliance() {
    }
    private String quarterRange;
    private String quarterNumber;
    private int pol;
    private int lpg;
    private int aviation;
    private int lubes;
    private int others;
    private int serialNo;
    static int polTotal;
    static int lpgTotal;
    static int aviationTotal;
    static int lubesTotal;
    static int othersTotal;

    public static int getPolTotal() {
        return polTotal;
    }

    public static int getLpgTotal() {
        return lpgTotal;
    }

    public static int getAviationTotal() {
        return aviationTotal;
    }

    public static int getLubesTotal() {
        return lubesTotal;
    }

    public static int getOthersTotal() {
        return othersTotal;
    }

    public int getSerialNo() {
        return serialNo;
    }

    public void setSerialNo(int serialNo) {
        this.serialNo = serialNo;
    }

    public String getQuarterRange() {
        return quarterRange;
    }

    public void setQuarterRange(String quarterRange) {
        this.quarterRange = quarterRange;
    }

    public String getQuarterNumber() {
        return quarterNumber;
    }

    public void setQuarterNumber(String quarterNumber) {
        this.quarterNumber = quarterNumber;
    }

    public int getPol() {
        return pol;
    }

    public void setPol(int pol) {
        polTotal = polTotal + pol;
        this.pol = pol;
    }

    public int getLpg() {
        return lpg;
    }

    public void setLpg(int lpg) {
        lpgTotal = lpgTotal + lpg;
        this.lpg = lpg;
    }

    public int getAviation() {
        return aviation;
    }

    public void setAviation(int aviation) {
        aviationTotal = aviationTotal + aviation;
        this.aviation = aviation;
    }

    public int getLubes() {
        return lubes;
    }

    public void setLubes(int lubes) {
        lubesTotal = lubesTotal + lubes;
        this.lubes = lubes;
    }

    public int getOthers() {
        return others;
    }

    public void setOthers(int others) {
        othersTotal = othersTotal + others;
        this.others = others;
    }
}

Answer 1

  public static int getPolTotal() {
        return polTotal;
    }

您不能将 getter 设为静态。Primefaces View 无法识别这一点。

将 getter 更改为:

 public int getPolTotal() {
        return polTotal;
    }

您仍然可以将 variable 作为 static。 (private static int polTotal;)