eCharts工具类

ECharts是一款基于JavaScript的数据可视化图表库提供直观生动可交互可个性化定制的数据可视化图表。ECharts最初由百度团队开源并于2018年初捐赠给Apache基金会成为ASF孵化级项目。

ECharts官方地址

Examples - Apache ECharts

ECharts一个使用 JavaScript 实现的开源可视化库可以流畅的运行在 PC 和移动设备上兼容当前绝大部分浏览器IE8/9/10/11ChromeFirefoxSafari等底层依赖矢量图形库 ZRender提供直观交互丰富可高度个性化定制的数据可视化图表。正在广泛的应用在互联网项目中。

柱状图、饼图实体类

@Data
public class Line<T extends Serializable> implements Serializable {
    private static final long serialVersionUID = 855735354643061064L;
    @ApiModelProperty("x名称")
    private String xName;
    @ApiModelProperty("x轴坐标")
    private List<String> keys;
    @ApiModelProperty("数据")
    private List<LineData<T>> valList;
    @ApiModelProperty("图例数据")
    private List<String> legendData;
}

@Data
public class LineData<T extends Serializable> implements Serializable {
    private static final long serialVersionUID = -184896191268244331L;
    @ApiModelProperty("数据值")
    private T[] vals;
    @ApiModelProperty("数据单位")
    private String dataUnit;
    @ApiModelProperty("曲线的名称")
    private String name;
    @ApiModelProperty("y轴位置")
    private int yIndex = 1;
}


@Data
public class Pie {
    @ApiModelProperty("饼图标题")
    private String text;
    @ApiModelProperty("图例标签")
    private List<String> legendData = new ArrayList();
    @ApiModelProperty("图例数据")
    private List<PieData> seriesData = new ArrayList();
}

柱状图、饼图实体类 

public class GraphicUtils {

	private GraphicUtils(){}

	/**
	 * 返回单个图表结构的数据
	 */
	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);
	}

	/**
	 * 返回两个图表结构的数据
	 */
	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;
	}

	/**
	 * 返回空图表结构的数据
	 */
	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);
	}

	/**
	 * 图表里面添加数据
	 */
	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));
	}

	/**
	 * 饼图
	 */
	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;
	}

}