p：图表图例不显示颜色

Question

当我展示图表JSF Primefaces 5.2的图例时，我遇到了问题。在第一次加载时，图例没有颜色的线条，但是当我重新编辑此页面时，所有都是okei。

这里我的代码，我已经设置了默认图例，但在第一次加载时，颜色没有显示。我试图用基于javascript的jqplot修改，但我得到了相同的结果

dryMassVsPowerGraphModel = new LineChartModel();
            affectColorBusFamily();
            BigDecimal dryMassTemp;
            Double eolPowerTemp = 0d;
            Map<Double, Double> mapTemp = new HashMap<Double, Double>();

            for (final Entry<String, String> busFamily : filterBusFamily.entrySet()) {

                seriesContainsPoint = false;
                final List<Map<String, Object>> listDryMassEOLPowerByBusFamily = spaceTrakSpaceCraftDao
                        .getDryMassVsPowerGraphValues(busFamily.getValue());
                if (CollectionUtils.isNotEmpty(listDryMassEOLPowerByBusFamily)
                        && listDryMassEOLPowerByBusFamily.size() > 0) {
                    listeLabelBusFamilyTemp = new ArrayList<>();

                    filterBusFamilySelected.put(busFamily.getKey(), busFamily.getValue());

                    final LineChartSeries myserie = new LineChartSeries();
                    myserie.setLabel(busFamily.getValue());
                    myserie.setShowLine(false);

                    for (final Map<String, Object> item : listDryMassEOLPowerByBusFamily) {
                        BigDecimal dryMass = null;
                        final BigDecimal dryMass_scor = (BigDecimal) item.get("dry_mass_scor");
                        final BigDecimal dryMass_seradata = (BigDecimal) item.get("dry_mass_scor");
                        dryMass = dryMass_scor != null ? dryMass_scor : dryMass_seradata;
                        if (dryMass != null) {

                            eolPowerTemp = mapTemp.get(dryMass.doubleValue());
                            if (eolPowerTemp != null
                                    && eolPowerTemp.compareTo((Double) item.get("eol_power")) != 0) {
                                listeLabelBusFamilyTemp.add("'" + busFamily.getValue() + "'");
                            }
                            if (eolPowerTemp == null) {
                                listeLabelBusFamilyTemp.add("'" + busFamily.getValue() + "'");
                            }
                            mapTemp.put(dryMass.doubleValue(), (Double) item.get("eol_power"));
                            myserie.set(dryMass.doubleValue(), (Double) item.get("eol_power"));

                            seriesContainsPoint = true;
                        }

                    }
                    if (seriesContainsPoint) {
                        numberSat++;
                        final Random rand = new Random();
                        final float r = rand.nextFloat();
                        final float g = rand.nextFloat();
                        final float b = rand.nextFloat();
                        final Color randomColor = new Color(r, g, b);
                        final String hex = Integer.toHexString(randomColor.getRGB()).substring(2);
                        listColor.add(hex);
                        dryMassVsPowerGraphModel.addSeries(myserie);

                        listeLabelBusFamily += "[ " + StringUtils.join(listeLabelBusFamilyTemp, ',') + " ], ";
                    }

                    dryMassVsPowerGraphModel.setLegendPosition("e");
                    dryMassVsPowerGraphModel.setLegendPlacement(LegendPlacement.OUTSIDEGRID);
                    dryMassVsPowerGraphModel.setLegendCols(2);

                }
            }
            listeLabelBusFamily = listeLabelBusFamily.substring(0, listeLabelBusFamily.lastIndexOf(","));
            dryMassVsPowerGraphModel.setSeriesColors(StringUtils.join(listColor, ','));
            dryMassVsPowerGraphModel.setShowDatatip(false);


            final Axis xAxis3 = dryMassVsPowerGraphModel.getAxis(AxisType.X);
            xAxis3.setLabel("Dry mass (kg)");
            final Axis yAxis3 = dryMassVsPowerGraphModel.getAxis(AxisType.Y);
            yAxis3.setLabel("EOL Power (W)");