ExcelChartBuildService.java
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package com.bckefu.excel.graph.builder;
import com.bckefu.excel.graph.constant.ExcelGraphElementType;
import com.bckefu.excel.graph.constant.ExcelGraphType;
import com.bckefu.excel.graph.entity.ExcelGraph;
import com.bckefu.excel.graph.entity.ExcelGraphElement;
import com.bckefu.excel.graph.entity.ExcelTitleCell;
import com.bckefu.excel.util.PoiCellUtil;
import com.bckefu.excel.util.PoiExcelGraphDataUtil;
import com.google.common.collect.Lists;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.usermodel.charts.*;
import org.apache.poi.ss.util.CellRangeAddress;
import java.util.List;
/**
* @author : caoliang
* @date : 2017/11/20 下午2:06
*/
public class ExcelChartBuildService {
/**
* 通过实时数据行来重新计算图形定义
*
* @param workbook
* @param graphList
* @param build
* @param append
*/
public static void createExcelChart(Workbook workbook, List<ExcelGraph> graphList, Boolean build, Boolean append) {
if (workbook != null && graphList != null) {
//设定默认第一个sheet为数据项
Sheet dataSouce = workbook.getSheetAt(0);
if (dataSouce != null) {
buildTitle(dataSouce, graphList);
if (build) {
PoiExcelGraphDataUtil.buildGraphData(dataSouce, graphList);
}
if (append) {
buildExcelChart(dataSouce, dataSouce, graphList);
} else {
Sheet sheet = workbook.createSheet("图形界面");
buildExcelChart(dataSouce, sheet, graphList);
}
}
}
}
/**
* 构建基础图形
*
* @param drawing
* @param anchor
* @param dataSourceSheet
* @param graph
*/
private static void buildExcelChart(Drawing drawing, ClientAnchor anchor, Sheet dataSourceSheet, ExcelGraph graph) {
Chart chart = drawing.createChart(anchor);
ChartLegend legend = chart.getOrCreateLegend();
legend.setPosition(LegendPosition.TOP_RIGHT);
ChartAxis bottomAxis = chart.getChartAxisFactory().createCategoryAxis(AxisPosition.BOTTOM);
ValueAxis leftAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.LEFT);
leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
ExcelGraphElement categoryElement = graph.getCategory();
ChartDataSource categoryChart;
if (categoryElement != null && categoryElement.getElementType().equals(ExcelGraphElementType.STRING_TYPE)) {
categoryChart = DataSources.fromStringCellRange(dataSourceSheet, new CellRangeAddress(categoryElement.getStartRowNum(), categoryElement.getEndRowNum(), categoryElement.getStartColNum(), categoryElement.getEndColNum()));
} else {
categoryChart = DataSources.fromNumericCellRange(dataSourceSheet, new CellRangeAddress(categoryElement.getStartRowNum(), categoryElement.getEndRowNum(), categoryElement.getStartColNum(), categoryElement.getEndColNum()));
}
List<ExcelGraphElement> valueList = graph.getValueList();
List<ChartDataSource<Number>> chartValueList = Lists.newArrayList();
if (valueList != null && valueList.size() > 0) {
for (ExcelGraphElement ele : valueList) {
ChartDataSource<Number> source = DataSources.fromNumericCellRange(dataSourceSheet, new CellRangeAddress(ele.getStartRowNum(), ele.getEndRowNum(), ele.getStartColNum(), ele.getEndColNum()));
chartValueList.add(source);
}
}
if (graph.getGraphType().equals(ExcelGraphType.LINE_CHART)) {
LineChartData data = chart.getChartDataFactory().createLineChartData();
buildLineChartData(data, categoryChart, chartValueList, graph.getTitle());
chart.plot(data, bottomAxis, leftAxis);
} else {
ScatterChartData data = chart.getChartDataFactory().createScatterChartData();
buildScatterChartData(data, categoryChart, chartValueList, graph.getTitle());
chart.plot(data, bottomAxis, leftAxis);
}
}
/**
* 构建多个图形对象
*
* @param dataSourceSheet
* @param tragetSheet
* @param graphList
*/
private static void buildExcelChart(Sheet dataSourceSheet, Sheet tragetSheet, List<ExcelGraph> graphList) {
int len = graphList.size();
if (len == 1) {
buildExcelChart(dataSourceSheet, tragetSheet, graphList.get(0));
} else {
int drawStart = 0;
int drawEnd = 20;
Drawing drawing = PoiExcelGraphDataUtil.getDrawingPatriarch(tragetSheet);
for (int i = 0; i < len; i++) {
ExcelGraph graph = graphList.get(i);
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, drawStart, 15, drawEnd);
buildExcelChart(drawing, anchor, dataSourceSheet, graph);
drawStart = drawStart + drawEnd;
drawEnd = drawEnd + drawEnd;
}
}
}
/**
* 构建图形对象
*
* @param dataSourceSheet
* @param tragetSheet
* @param graph
*/
private static void buildExcelChart(Sheet dataSourceSheet, Sheet tragetSheet, ExcelGraph graph) {
Drawing drawing = PoiExcelGraphDataUtil.getDrawingPatriarch(tragetSheet);
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 0, 15, 20);
buildExcelChart(drawing, anchor, dataSourceSheet, graph);
}
/**
* 构建Title
*
* @param sheet
* @param graph
*/
private static void buildTitle(Sheet sheet, ExcelGraph graph) {
int cellTitleLen = graph.getTitleCell().size();
int titleLen = graph.getTitle().size();
if (titleLen > 0) {
} else {
for (int i = 0; i < cellTitleLen; i++) {
ExcelTitleCell titleCell = graph.getTitleCell().get(i);
if (titleCell != null) {
graph.getTitle().add(PoiCellUtil.getCellValue(sheet, titleCell.getRow(), titleCell.getCol()));
}
}
}
}
/**
* 构建Title
*
* @param sheet
* @param graphList
*/
private static void buildTitle(Sheet sheet, List<ExcelGraph> graphList) {
if (graphList != null && graphList.size() > 0) {
for (ExcelGraph graph : graphList) {
if (graph != null) {
buildTitle(sheet, graph);
}
}
}
}
/**
* @param data
* @param categoryChart
* @param chartValueList
* @param title
*/
private static void buildLineChartData(LineChartData data, ChartDataSource categoryChart, List<ChartDataSource<Number>> chartValueList, List<String> title) {
if (chartValueList.size() == title.size()) {
int len = title.size();
for (int i = 0; i < len; i++) {
//TODO 更新版本
//data.addSerie(categoryChart, chartValueList.get(i)).setTitle(title.get(i));
}
} else {
int i = 0;
for (ChartDataSource<Number> source : chartValueList) {
String temp_title = title.get(i);
if (StringUtils.isNotBlank(temp_title)) {
//data.addSerie(categoryChart, source).setTitle(_title);
} else {
//data.addSerie(categoryChart, source);
}
}
}
}
/**
* @param data
* @param categoryChart
* @param chartValueList
* @param title
*/
private static void buildScatterChartData(ScatterChartData data, ChartDataSource categoryChart, List<ChartDataSource<Number>> chartValueList, List<String> title) {
if (chartValueList.size() == title.size()) {
int len = title.size();
for (int i = 0; i < len; i++) {
data.addSerie(categoryChart, chartValueList.get(i)).setTitle(title.get(i));
}
} else {
int i = 0;
for (ChartDataSource<Number> source : chartValueList) {
String temp_title = title.get(i);
if (StringUtils.isNotBlank(temp_title)) {
data.addSerie(categoryChart, source).setTitle(temp_title);
} else {
data.addSerie(categoryChart, source);
}
}
}
}
}