From 23fab39fddc350b82231c5eb27298a719aef72b5 Mon Sep 17 00:00:00 2001
From: xyc <jc_xiong@hotmail.com>
Date: 星期三, 07 十月 2026 09:13:31 +0800
Subject: [PATCH] docs(交接): 补充 10-07 上午国省道调整更正与新会话接手说明

---
 traffic-audit-server/src/main/java/com/trafficaudit/holiday/service/HolidayTrendChartService.java |   53 +++++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 39 insertions(+), 14 deletions(-)

diff --git a/traffic-audit-server/src/main/java/com/trafficaudit/holiday/service/HolidayTrendChartService.java b/traffic-audit-server/src/main/java/com/trafficaudit/holiday/service/HolidayTrendChartService.java
index 4343f08..47bd7ca 100644
--- a/traffic-audit-server/src/main/java/com/trafficaudit/holiday/service/HolidayTrendChartService.java
+++ b/traffic-audit-server/src/main/java/com/trafficaudit/holiday/service/HolidayTrendChartService.java
@@ -49,6 +49,7 @@
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.text.DecimalFormat;
 import java.text.NumberFormat;
 import java.util.ArrayList;
@@ -76,6 +77,8 @@
     private static final double RIGHT_LABEL_BAND = 74.0;
     private static final double ITEM_LABEL_GAP = 10.0;
     private static final float HALO_OUTLINE_WIDTH = 4.0f;
+    private static final int PERCENT_ITEM_LABEL_DECIMALS = 1;
+    private static final double LINE_CHART_HEIGHT_SCALE = 1.20;
     private static final Color ITEM_LABEL_COLOR = new Color(55, 55, 55);
     private static final Color[] SERIES_COLORS = {
             new Color(192, 80, 77),
@@ -95,6 +98,11 @@
 
     public byte[] lineChart(String yAxisLabel, List<ChartSeries> series, boolean percentAxis,
                             int width, int height) {
+        return lineChart(yAxisLabel, series, percentAxis, 2, width, height);
+    }
+
+    public byte[] lineChart(String yAxisLabel, List<ChartSeries> series, boolean percentAxis,
+                            int valueDecimals, int width, int height) {
         XYSeriesCollection dataset = new XYSeriesCollection();
         for (int seriesIndex = 0; seriesIndex < series.size(); seriesIndex++) {
             ChartSeries item = series.get(seriesIndex);
@@ -102,7 +110,7 @@
             for (int i = 0; i < item.getValues().size(); i++) {
                 BigDecimal value = item.getValues().get(i);
                 if (value != null) {
-                    xySeries.add(i, value.doubleValue());
+                    xySeries.add(i, displayValue(value, percentAxis, valueDecimals).doubleValue());
                 }
             }
             dataset.addSeries(xySeries);
@@ -134,8 +142,8 @@
 
         NumberAxis rangeAxis = new NumberAxis();
         rangeAxis.setAutoRangeIncludesZero(false);
-        rangeAxis.setLowerMargin(0.12);
-        rangeAxis.setUpperMargin(0.16);
+        rangeAxis.setLowerMargin(0.04);
+        rangeAxis.setUpperMargin(0.07);
         rangeAxis.setTickLabelFont(TICK_FONT);
         rangeAxis.setLabelFont(LABEL_FONT);
         rangeAxis.setTickLabelPaint(MUTED_TEXT_COLOR);
@@ -148,7 +156,7 @@
         }
         NumberFormat valueFormat = percentAxis
                 ? NumberFormat.getPercentInstance() : new DecimalFormat("#,##0.##");
-        valueFormat.setMaximumFractionDigits(percentAxis ? 0 : 2);
+        valueFormat.setMaximumFractionDigits(percentAxis ? 0 : valueDecimals);
         rangeAxis.setNumberFormatOverride(valueFormat);
         plot.setRangeAxis(rangeAxis);
         plot.setAxisOffset(new RectangleInsets(2.0, 2.0, 2.0, 2.0));
@@ -166,7 +174,8 @@
                     BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
         }
         plot.setRenderer(renderer);
-        return render(chart, width, height, yAxisLabel, true, percentAxis);
+        return render(chart, width, scaleLineChartHeight(height),
+                yAxisLabel, true, percentAxis, valueDecimals);
     }
 
     public byte[] pieChart(String valueSuffix, List<ChartCategory> categories,
@@ -212,7 +221,7 @@
         for (ChartCategory category : categories) {
             plot.setSectionPaint(category.getName(), seriesColor(index++));
         }
-        return render(chart, width, height, valueSuffix, false, false);
+        return render(chart, width, height, valueSuffix, false, false, 2);
     }
 
     public byte[] stackedBarChart(String yAxisLabel, List<String> categories,
@@ -282,7 +291,7 @@
             renderer.setSeriesPaint(i, seriesColor(i));
         }
         plot.setRenderer(renderer);
-        return render(chart, width, height, yAxisLabel, true, percentAxis);
+        return render(chart, width, height, yAxisLabel, true, percentAxis, 2);
     }
 
     private static class WaterRightPiePlot<K extends Comparable<K>> extends PiePlot<K> {
@@ -445,7 +454,7 @@
     }
 
     private byte[] render(JFreeChart chart, int width, int height, String unitLabel,
-                         boolean axisChart, boolean percentItemLabels) {
+                         boolean axisChart, boolean percentItemLabels, int valueDecimals) {
         try {
             reserveUnitLabelBand(chart, axisChart, unitLabel);
             ByteArrayOutputStream out = new ByteArrayOutputStream();
@@ -465,7 +474,7 @@
                     drawDateLabel(graphics, info.getPlotInfo().getDataArea());
                 }
                 drawXYItemLabels(graphics, image, chart,
-                        info.getPlotInfo().getDataArea(), percentItemLabels, unitLabel);
+                        info.getPlotInfo().getDataArea(), percentItemLabels, unitLabel, valueDecimals);
                 drawStackedBarLabels(graphics, image, chart,
                         info.getPlotInfo().getDataArea(), percentItemLabels);
             } finally {
@@ -830,7 +839,7 @@
 
     private void drawXYItemLabels(Graphics2D graphics, BufferedImage image, JFreeChart chart,
                                   Rectangle2D dataArea, boolean percentItemLabels,
-                                  String unitLabel) {
+                                  String unitLabel, int valueDecimals) {
         if (!(chart.getPlot() instanceof XYPlot) || dataArea == null
                 || dataArea.getWidth() <= 0 || dataArea.getHeight() <= 0) {
             return;
@@ -859,7 +868,7 @@
                 Point2D point = itemPoint(plot, dataset, seriesIndex, itemIndex, dataArea);
                 if (yValue == null || point == null) continue;
                 labels.add(new DayLabel(seriesIndex, point,
-                        formatLineLabel(yValue, percentItemLabels)));
+                        formatLineLabel(yValue, percentItemLabels, valueDecimals)));
             }
             // A day's labels are stacked in the same top-to-bottom order as its data
             // points, so a label never looks attached to a neighbouring line.
@@ -1108,13 +1117,29 @@
         return total;
     }
 
-    private String formatLineLabel(Number value, boolean percentItemLabels) {
+    static int scaleLineChartHeight(int height) {
+        return (int) Math.round(height * LINE_CHART_HEIGHT_SCALE);
+    }
+
+    static long scaleLineChartHeight(long height) {
+        return Math.round(height * LINE_CHART_HEIGHT_SCALE);
+    }
+
+    static BigDecimal displayValue(BigDecimal value, boolean percentItemLabels, int valueDecimals) {
+        if (value == null) return null;
+        int scale = percentItemLabels ? PERCENT_ITEM_LABEL_DECIMALS + 2 : valueDecimals;
+        return value.setScale(scale, RoundingMode.HALF_UP);
+    }
+
+    private String formatLineLabel(Number value, boolean percentItemLabels, int valueDecimals) {
         if (percentItemLabels) {
             NumberFormat formatter = NumberFormat.getPercentInstance();
-            formatter.setMaximumFractionDigits(1);
+            formatter.setMaximumFractionDigits(PERCENT_ITEM_LABEL_DECIMALS);
             return formatter.format(value.doubleValue());
         }
-        return new DecimalFormat("#,##0.##").format(value.doubleValue());
+        DecimalFormat formatter = new DecimalFormat("#,##0");
+        formatter.setMaximumFractionDigits(valueDecimals);
+        return formatter.format(value.doubleValue());
     }
 
     private void drawLabelWithHalo(Graphics2D graphics, String text, Rectangle2D rectangle,

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