@Data
public class Line<T extends Serializable> implements Serializable {
    private static final long serialVersionUID = 855735354643061064L;
    @ApiModelProperty("x名稱")
    private String xName;
    @ApiModelProperty("x軸坐標")
    private List<String> keys;
    @ApiModelProperty("數據")
    private List<LineData<T>> valList;
    @ApiModelProperty("圖例數據")
    private List<String> legendData;
}
@Data
public class LineData<T extends Serializable> implements Serializable {
    private static final long serialVersionUID = -184896191268244331L;
    @ApiModelProperty("數據值")
    private T[] vals;
    @ApiModelProperty("數據單位")
    private String dataUnit;
    @ApiModelProperty("曲線的名稱")
    private String name;
    @ApiModelProperty("y軸位置")
    private int yIndex = 1;
}
@Data
public class Pie {
    @ApiModelProperty("餅圖標題")
    private String text;
    @ApiModelProperty("圖例標簽")
    private List<String> legendData = new ArrayList();
    @ApiModelProperty("圖例數據")
    private List<PieData> seriesData = new ArrayList();
}

public class GraphicUtils {
	private GraphicUtils(){}
	/**
	 * 返回單個圖表結構的數據
	 */
	public static Line<BigDecimal> getLine(BigDecimal[] dataArray, List<String> keys, String name, String unit) {
		Line<BigDecimal> line = new Line<>();
		LineData<BigDecimal> lineData = new LineData<>();
		List<LineData<BigDecimal>> valList = new ArrayList<>();
		valList.add(lineData.setVals(dataArray).setName(name).setDataUnit(unit));
		return line.setKeys(keys).setValList(valList);
	}
	/**
	 * 返回兩個圖表結構的數據
	 */
	public static Line<BigDecimal> getLine(List<String> keys, BigDecimal[] dataArray, BigDecimal[] dataArray2, String name, String name2,String unit) {
		Line<BigDecimal> line = getLine(dataArray, keys, name, unit);
		insertLineData(line,dataArray2,name2,unit);
		return line;
	}
	/**
	 * 返回空圖表結構的數據
	 */
	public static Line<BigDecimal> getEmptyLine(List<String> keys, String xName) {
		Line<BigDecimal> line = new Line<>();
		List<LineData<BigDecimal>> valList = new ArrayList<>();
		return line.setKeys(keys).setValList(valList).setXName(xName);
	}
	/**
	 * 圖表里面添加數據
	 */
	public static void insertLineData(Line<BigDecimal> histogramList, BigDecimal[] dataArray, String name,String dataUnit) {
		List<LineData<BigDecimal>> valList = histogramList.getValList();
		LineData<BigDecimal> lineData = new LineData<>();
		valList.add(lineData.setVals(dataArray).setName(name).setDataUnit(dataUnit));
	}
	/**
	 * 餅圖
	 */
	public static Pie getPie(String name, List<BigDecimal> resList, List<String> keyList) {
		Pie pie = new Pie();
		pie.setText(name);
		List<PieData> seriesData = new ArrayList<>();
		pie.setSeriesData(seriesData);
		int length = resList.size() >= keyList.size() ? resList.size() : keyList.size();
		for (int i = 0; i < length; i++) {
			PieData direct = new PieData();
			direct.setName(keyList.get(i));
			direct.setValue(resList.get(i));
			seriesData.add(direct);
		}
		return pie;
	}
}