カスタマイズ性重視。
例外処理も抜きで、超シンプルなページネーションのサンプルコードです。

完成品

VFコード

<apex:page controller="pagination">
    <h1>ページネーション練習用</h1>
    <apex:form>
        <apex:dataList value="{!accResults}" var="acc">
            <p>{!acc.Name}</p>
        </apex:dataList>
        
        <div>
            <apex:repeat value="{!pageNumList}" var="pageNum">
                <apex:commandLink action="{!goClickNumPage}" value="{!pageNum}" style="margin-left:10px;">
                    <apex:param value="{!pageNum}" name="clickNum"/>
                </apex:commandLink>
            </apex:repeat>    
        </div>

        <apex:commandLink action="{!goPrevious}" value="前へ"/>
        <apex:commandLink action="{!goNext}" value="次へ" style="margin-left:10px;"/>
    </apex:form>
</apex:page>

Apexコード

public with sharing class pagination {
    private Apexpages.StandardSetController ssc ;
    public List<Account> accResults {get; private set;}

    public pagination() {
        List<Account> accList = [SELECT Name FROM Account];

        this.ssc = new Apexpages.StandardSetController(accList);
        this.ssc.setPageSize(5);

        this.accResults = ssc.getRecords();
    }
    
    public List<Integer> getPageNumList(){
        List<Integer> resultList = new List<Integer>();
        Decimal totalRecordSize = (Decimal)this.ssc.getResultSize();
        Decimal endPageNumDec = totalRecordSize.divide(this.ssc.getPageSize(), 0, System.RoundingMode.UP);
        Integer endPageNum = (Integer)endPageNumDec;

        for(Integer i=1; i<=endPageNum; i++){
            resultList.add(i);
        }
        return resultList;
    }
    
    public void goClickNumPage(){
        String strClickNum = Apexpages.currentPage().getParameters().get('clickNum');
        Integer clickNum = Integer.valueOf(strClickNum);

        this.ssc.setPageNumber(clickNum);
        this.accResults = this.ssc.getRecords();
    }
    
    public void goPrevious(){
        this.ssc.previous();
        this.accResults = ssc.getRecords();
    }
    public void goNext(){
        this.ssc.Next();
        this.accResults = ssc.getRecords();
    }
}

参考文献