ExtremeTable在大量记录造成大数分页时没有很好的解决页面的快速跳转，这是较遗憾的一个缺陷。最近因项目用到ExtremeTable，所以我就简单的添加了这个功能，当因为时间关系，并没有深入的完善。这里我先将我的代码贴出来，希望后续有人能继续完善。

1.org.extremecomponents.table.view.html.ToolbarBuilder  中加入如下方法。

    public void pageJumpDroplist(){
        Integer total = new Integer(model.getLimit().getTotalRows());
         Integer from = new Integer(model.getLimit().getRowStart() + 1);
         Integer to = new Integer(model.getLimit().getRowEnd());
         Integer current = new Integer(model.getLimit().getCurrentRowsDisplayed());
         Integer totalPage = (Integer)total/current;
         if(total%current!=0)
                totalPage=totalPage+1;
        int currentPage = model.getLimit().getPage();

        html.select().name(model.getTableHandler().prefixWithTableId() + TableConstants.DROWDOWNLIST_PAGE);

        StringBuffer onchange = new StringBuffer();
        onchange.append(new TableActions(model).getPageJumpAction());
        html.onchange(onchange.toString());

        html.close();

        html.newline();
        html.tabs(4);

        for(int i=1;i<=totalPage;i++){
            html.option().value("" + i);
            if (currentPage == i) {
                html.selected();
            }           
            html.close();
            html.append(String.valueOf(i));
            html.optionEnd();
        }
    }


2.org.extremecomponents.table.view.html.TableActions 中加入

    public String getPageJumpAction(){
        StringBuffer action = new StringBuffer("javascript:");
        action.append(getClearedExportTableIdParameters());
        action.append(getPageJumpFormParameter(TableConstants.PAGE));
        action.append(getOnInvokeAction());
        return action.toString();
    }

    protected String getPageJumpFormParameter(String name) {
        StringBuffer result = new StringBuffer();

        String form = BuilderUtils.getForm(model);
        String selectedOption = "this.options[this.selectedIndex].value";
        result.append("document.forms.").append(form).append(".");
        result.append(model.getTableHandler().prefixWithTableId()).append(name);
        result.append(".value=").append(selectedOption).append(";");

        return result.toString();
    }

3.org.extremecomponents.table.view.DefaultToolbar 中你想要放置页面跳转下拉框的地方加入如下代码

            html.td(4).close();
            toolbarBuilder.pageJumpDroplist();
            html.tdEnd();


我将我加的地方贴整个方法贴出来（红色是有修改的地方）
    protected void columnRight(HtmlBuilder html, TableModel model) {
        boolean showPagination = BuilderUtils.showPagination(model);
        boolean showExports = BuilderUtils.showExports(model);

        ToolbarBuilder toolbarBuilder = new ToolbarBuilder(html, model);

        html.td(2).align("right").close();

        html.table(2).border("0").cellPadding("0").cellSpacing("1").styleClass(BuilderConstants.TOOLBAR_CSS).close();

        html.tr(3).close();

        if (showPagination) {

            html.td(4).close();
            toolbarBuilder.firstPageItemAsImage();
            html.tdEnd();

            html.td(4).close();
            toolbarBuilder.prevPageItemAsImage();
            html.tdEnd();

            html.td(4).close();
            toolbarBuilder.nextPageItemAsImage();
            html.tdEnd();

            html.td(4).close();
            toolbarBuilder.lastPageItemAsImage();
            html.tdEnd();

            html.td(4).close();
            toolbarBuilder.separator();
            html.tdEnd();

            html.td(4).close();
            toolbarBuilder.pageJumpDroplist();
            html.tdEnd();

            html.td(4).close();
            toolbarBuilder.separator();
            html.tdEnd();

            html.td(4).style("width:20px").close();
            html.newline();
            html.tabs(4);
            toolbarBuilder.rowsDisplayedDroplist();
            html.img();
            html.src(BuilderUtils.getImage(model, BuilderConstants.TOOLBAR_ROWS_DISPLAYED_IMAGE));
            html.style("border:0");
            html.alt("Rows Displayed");
            html.xclose();
            html.tdEnd();

            if (showExports) {
                html.td(4).close();
                toolbarBuilder.separator();
                html.tdEnd();
            }
        }

        if (showExports) {
            Iterator iterator = model.getExportHandler().getExports().iterator();
            for (Iterator iter = iterator; iter.hasNext();) {
                html.td(4).close();
                Export export = (Export) iter.next();
                toolbarBuilder.exportItemAsImage(export);
                html.tdEnd();
            }
        }

        html.trEnd(3);

        html.tableEnd(2);
        html.newline();
        html.tabs(2);

        html.tdEnd();
    }


4.org.extremecomponents.table.core.TableConstants中加入一行


public final static String DROWDOWNLIST_PAGE= "dp";



5.编译打包，ok，搞定了。下周我会把我的jar传上来。


就这样，不是很难，ExtremeTable是个不错的东东，希望大家一起来完善。