关于mysql:手把手教你用策略模式-写echarts的配置项option

前言：策略模式和适配器模式很像 但前者策略的接口和相干类会裸露进去，并且每个策略的“计算内容”都不同【罕用于计算】。

一、钻研下 echarts 官网的重要配置

1.1 罕用项次要有 title legend xAxis yAxis legend dataset series textStyle 如下图所示

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppa3VpY3VpNzQwMg_size_16_color_FFFFFF_t_70][] ![20200704092450556.png][]

二、建设 Echarts 的 option 类 我在此命名为 EchartsOption【注：前面个别 option 下间接属性 java 命名前缀都是 Echarts】

package com.ken.sys.common.entity.echarts.option;

import com.ken.sys.common.entity.echarts.axis.EchartsXYAxis;
import com.ken.sys.common.entity.echarts.dataset.EchartDataset;
import com.ken.sys.common.entity.echarts.legend.EchartsLegend;
import com.ken.sys.common.entity.echarts.series.EchartBaseSeries;
import com.ken.sys.common.entity.echarts.textStyle.EchartsTextStyle;
import com.ken.sys.common.entity.echarts.title.EchartsTitle;

import java.util.List;

/**
 *
 * @author swc
 *
 * @date 2020/7/3 0003 下午 13:43
 */
public class EchartsOption {
    // 题目
    private EchartsTitle title;

    // 图例组件。// 图例组件展示了不同系列的标记(symbol)，色彩和名字。能够通过点击图例管制哪些系列不显示。private EchartsLegend legend;

    // 直角坐标系 grid 中的 x 轴，private EchartsXYAxis xAxis;

    // 直角坐标系 grid 中的 y 轴，[x 轴和 y 轴 属性是一样的]
    private EchartsXYAxis yAxis;

    // 默认色彩值  全局
    private Object color =new String[]{"#c23531","#2f4554", "#61a0a8", "#d48265", "#91c7ae","#749f83",  "#ca8622", "#bda29a","#6e7074", "#546570", "#c4ccd3"};

    // 全局的字体款式。private EchartsTextStyle textStyle;

    // 系列列表。每个系列通过 type 决定本人的图表类型
    private List<EchartBaseSeries> series;

    // 留神
    //Charts 4 开始反对了 数据集（dataset）组件用于独自的数据集申明，// 从而数据能够独自治理，被多个组件复用，并且能够自在指定数据到视觉的映射。这在不少场景下能带来应用上的不便。private EchartDataset dataset;

    // 省略 get set 办法

}

2.1 以 title 为例子 写相干 的 java 类 EchartsTitle

![20200704094736425.png][]

/******************************************************************************
 *
 *
 *
 ******************************************************************************
 *
 *****************************************************************************/
package com.ken.sys.common.entity.echarts.title;

/**
 * <ul>
 * <li>Title= EchartsTitle</li>
 * <li>Description= TODO </li>
 * <li>Copyright= Copyright (c) 2018</li>
 * <li>Company= http=//www.jiangqiaotech.com/</li>
 * </ul>
 *
 * @author swc
 *
 * @date 2020/7/3 0003 下午 13=54
 */
public class EchartsTitle {

    private String id  ;

    // 是否显示题目组件
    private boolean show= true ;

    // 主题目文本，反对应用 \n 换行。private String text= "" ;

    private String link= "" ;

    private String target= "blank" ;

    private Object textStyle;

    private String subtext= "" ;

    private String sublink= "" ;

    private String subtarget= "blank" ;

    private String  subtextStyle;
    // 可选值："auto"、"left"、"right"、"center"。private String  textAlign= "auto" ;

    private String textVerticalAlign= "auto" ;

    private boolean triggerEvent= false ;

    //number /Array
    //5 or [5,10,2,20]
    private Object padding= 5 ;

    private Integer itemGap= 10 ;

    private Integer zlevel= 0 ;

    private Integer z= 2 ;

    //string | number
    private Object left= "auto" ;

    //string | number
    private Object top= "auto" ;

    //string | number
    private Object right= "auto" ;

    //string | number
    private Object bottom= "auto" ;

    //Color
    private Object backgroundColor= "transparent" ;

    //Color
    private Object borderColor= "#ccc" ;

    private Integer borderWidth= 0 ;

    private Integer  borderRadius= 0 ;

    private Integer shadowBlur ;

    //Color
    private Object  shadowColor ;

    private Integer  shadowOffsetX= 0 ;

    private Integer  shadowOffsetY= 0 ;


    // 省略 get set 办法
}

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppa3VpY3VpNzQwMg_size_16_color_FFFFFF_t_70 1][]

其余相干类在此不做赘述

这里简略说一下 series 应用基类【EchartBaseSeries】其余如饼图 折线图等的 series 都是集成 EchartBaseSeries

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppa3VpY3VpNzQwMg_size_16_color_FFFFFF_t_70 2][]

三、编写策略类【策略模式】

3.1 次要分为三局部，一是策略接口【EchartsStrategy】二是策略的上下文 对外裸露 匹配不同的策略 行使不同的计划

三是工厂类将策略注入 做到匹配不同的类型的策略

3.1.1 策略接口【EchartsStrategy】

public interface EchartsStrategy {
//    // 创立 option
    <T> EchartsOption createOption(IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto);

    // 会创立多个 option
    <T>List<EchartsOption> createMulOption(IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto);

}

3.1.2 策略上下文【EchartStrategyContext】

package com.ken.sys.common.strategycontext.echarts;

import com.ken.sys.common.entity.echarts.dto.HandEchartsDto;
import com.ken.sys.common.entity.echarts.option.EchartsOption;
import com.ken.sys.common.ifs.IEchartSeries;
import com.ken.sys.common.strategy.echarts.base.EchartsStrategy;

import java.util.List;

/**
 * <ul>
 * <li>Title: EchartStrategyContext</li>
 * </ul>
 *
 * @author swc
 *
 * @date 2020/7/3 0003 下午 14:54
 */
public class EchartStrategyContext {

    //echart 的生成策略
    private EchartsStrategy echartsStrategy;


    public <T>EchartsOption createOption(IEchartSeries iEchartSeries, List<T> list,HandEchartsDto echartsDto){if (echartsStrategy != null) {return echartsStrategy.createOption(iEchartSeries,list,echartsDto);
        }
        return null;
    }

    // 会创立多个 option
    public <T> List<EchartsOption> createMulOption(IEchartSeries iEchartSeries, List<T> list,HandEchartsDto echartsDto){if (echartsStrategy != null) {return echartsStrategy.createMulOption(iEchartSeries,list,echartsDto);
        }
        return null;
    }


    public EchartStrategyContext(EchartsStrategy echartsStrategy) {this.echartsStrategy = echartsStrategy;}

    private EchartStrategyContext() {}

}

3.1.3 策略的 工厂类【EchartsStrategyFactory】

/******************************************************************************
 *
 *
 *
 ******************************************************************************
 *
 *****************************************************************************/
package com.ken.sys.common.factory.echarts;

import com.ken.sys.common.constant.EchartsConstant;
import com.ken.sys.common.strategy.echarts.*;
import com.ken.sys.common.strategy.echarts.base.EchartsStrategy;

import java.util.HashMap;
import java.util.Map;

/**
 * <ul>
 * <li>Title: EchartsStrategyFactory</li>
 * <li>Description: TODO </li>
 * <li>Copyright: Copyright (c) 2018</li>
 * <li> 微信:tianji_vip</li>
 * </ul>
 *
 * @author swc
 *
 * @date 2020/7/3 0003 下午 15:07
 */
public class EchartsStrategyFactory {

    public  static Map<String,EchartsStrategy> hashMap;

    static {hashMap = new HashMap<String,EchartsStrategy>();
        hashMap.put(EchartsConstant.LINE,new EchartsLineStrategy());
        hashMap.put(EchartsConstant.BAR,new EchartsBarStrategy());
        hashMap.put(EchartsConstant.PIE,new EchartsPieStrategy());
        hashMap.put(EchartsConstant.FUNNEL,new EchartsFunnelStrategy());
        hashMap.put(EchartsConstant.GAUGE,new EchartsGaugeStrategy());
        hashMap.put(EchartsConstant.HEATMAP,new EchartsHeatMapStrategy());
    }

    public static EchartsStrategy getEchartsStrategy(String type) {return hashMap.get(type);
    }
}

四、局部策略内容展现【这里是把策略封装在 BaseStrategy 外面 作为公共局部】

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppa3VpY3VpNzQwMg_size_16_color_FFFFFF_t_70 3][]

BaseStrategy 的相干办法

package com.ken.sys.common.strategy.echarts.base;

import com.ken.sys.common.entity.echarts.axis.EchartsXYAxis;
import com.ken.sys.common.entity.echarts.dto.HandEchartsDto;
import com.ken.sys.common.entity.echarts.legend.EchartsLegend;
import com.ken.sys.common.entity.echarts.option.EchartsOption;
import com.ken.sys.common.entity.echarts.series.EchartBaseSeries;
import com.ken.sys.common.entity.echarts.series.HeatMapSeries;
import com.ken.sys.common.entity.echarts.series.data.SeriesData;
import com.ken.sys.common.entity.echarts.series.property.SeriesAreaStyle;
import com.ken.sys.common.entity.echarts.series.property.SeriesItemStyle;
import com.ken.sys.common.entity.echarts.series.property.SeriesLabel;
import com.ken.sys.common.entity.echarts.series.property.SeriesLineStyle;
import com.ken.sys.common.entity.echarts.title.EchartsTitle;
import com.ken.sys.common.ifs.IEchartSeries;
import com.ken.sys.common.util.EmptyUtils;
import com.ken.sys.common.util.ReflectUtils;

import java.util.*;

/**
 * <ul>
 * <li>Title: BaseStrategy</li>
 * <li>Description: TODO </li>
 * </ul>
 *
 * @author swc
 *
 * @date 2020/7/3 0003 下午 15:57
 */
public class BaseStrategy {

    // 针对 line 和 bar 图像
    public <T> EchartsOption createOptionForLineAndBar(IEchartSeries iEchartSeries,Class<? extends EchartBaseSeries> seriesClass, List<T> list, HandEchartsDto handEchartsDto){String xyAxisName = handEchartsDto.getxAxisDataName();

        Object[] legends = handEchartsDto.getLegends();

        Object[] fields =  handEchartsDto.getFields();

        List[] saveList = handEchartsDto.getSaveList();

        EchartsOption option =new EchartsOption();
        List<Object> xAxisDataList =new ArrayList<Object>();
        Map<String,List<Object>> map =new HashMap<String,List<Object>>();
        Number value =null;
        SeriesData data=null;
        String nameValue =null;
       try {for(T t:list){nameValue = ReflectUtils.getFieldValue(t,xyAxisName).toString();
               xAxisDataList.add(nameValue);

               for(int ind=0;ind<fields.length;ind++){value = (Number) ReflectUtils.getFieldValue(t,(String)fields[ind]);
                   value = EmptyUtils.isNullOrEmpty(value)?0:value;
                   data =new SeriesData();
                   data.setValue(value);
                   // 设置单个数据 款式
                   if(!EmptyUtils.isNullOrEmpty(iEchartSeries)){iEchartSeries.setSeriesDataProp(data,new SeriesLabel(),new SeriesItemStyle(),new SeriesAreaStyle(),new SeriesLineStyle());
                   }
                   saveList[ind].add(data);
               }
           }

           // 多个 series
           List<EchartBaseSeries> mulseries =new ArrayList<EchartBaseSeries>();

           commonSetSeries(iEchartSeries, seriesClass, legends, fields, mulseries, saveList);

           EchartsLegend legend = new EchartsLegend();
           legend.setData(Arrays.asList(legends));

           EchartsXYAxis xAxis = new EchartsXYAxis();
           xAxis.setData(xAxisDataList);

           option.setLegend(legend);
           option.setxAxis(xAxis);
           option.setSeries(mulseries);
       }catch (Exception e){
            // 理论换成日志打印
           e.printStackTrace();}
        return option;
    }

    // 针对漏斗图、仪器图 和饼图图像
    public <T> EchartsOption createOptionFGP(IEchartSeries iEchartSeries, Class<? extends EchartBaseSeries> seriesClass, List<T> list, HandEchartsDto handEchartsDto){EchartsOption option =new EchartsOption();
        String xyAxisName = handEchartsDto.getxAxisDataName();

        Object[] legends = handEchartsDto.getLegends();

        Object[] fields =  handEchartsDto.getFields();

        List[] saveList = handEchartsDto.getSaveList();

        boolean requireXAxis = handEchartsDto.getRequireXAxis();

        List<Object> xAxisDataList =new ArrayList<Object>();
        Map<String,List<Object>> map =new HashMap<String,List<Object>>();
        Number value =null;
        SeriesData data=null;
        String xAxisDataValue =null;

        try {for(T t:list){xAxisDataValue = ReflectUtils.getFieldValue(t,xyAxisName).toString();
                for(int ind=0;ind<fields.length;ind++){value = (Number) ReflectUtils.getFieldValue(t,(String)fields[ind]);
                    value = EmptyUtils.isNullOrEmpty(value)?0:value;

                    data =new SeriesData();
                    data.setValue(value);

                    data.setName(xAxisDataValue);
                    xAxisDataList.add(xAxisDataValue);

                    // 设置单个数据 款式
                    if(!EmptyUtils.isNullOrEmpty(iEchartSeries)){iEchartSeries.setSeriesDataProp(data,new SeriesLabel(),new SeriesItemStyle(),new SeriesAreaStyle(),new SeriesLineStyle());
                    }
                    saveList[ind].add(data);
                }
            }

            List<EchartBaseSeries> mulseries =new ArrayList<EchartBaseSeries>();
            commonSetSeries(iEchartSeries, seriesClass, legends, fields, mulseries, saveList);

            EchartsLegend legend =new EchartsLegend();
            legend.setData(Arrays.asList(legends));

            EchartsXYAxis xAxis =new EchartsXYAxis();
            xAxis.setData(xAxisDataList);

            // 须要 x 轴
            if(requireXAxis){option.setxAxis(xAxis);
            }
            option.setLegend(legend);
            option.setSeries(mulseries);
        }catch (Exception e){e.printStackTrace();
        }
        return option;
    }





    /**
     * 性能形容:  创立热力求的 option
     * @param iEchartSeries 接口
     * @param t  对象
    //     * @param titleFieldName
    //     * @param subFieldName 对象外面须要解决的 list 数据
    //     * @param xDimension 维度 x 轴
    //     * @param yDimension 维度 y
    //     * @param xAxisDataName x 轴须要展现的信息
    //     * @param yAxisDataName y 轴须要展现的信息
    //     * @param showValField 须要展现数据的列
     * @return: java.util.Map<java.lang.String,java.lang.Object>
     * @author: swc
     * @date: 2020/7/2 0002 下午 12:52
     */
    public static <T> EchartsOption createHeatMapOption(IEchartSeries iEchartSeries, T t, HandEchartsDto handEchartsDto) {EchartsOption option =new EchartsOption();
        List<EchartBaseSeries> seriesList =new ArrayList<EchartBaseSeries>();

        String titleFieldName = handEchartsDto.getTitleFieldName();

        String subFieldName = handEchartsDto.getSubFieldName();

        String xDimension = handEchartsDto.getxDimension();

        String yDimension =  handEchartsDto.getyDimension();

        String xAxisDataName = handEchartsDto.getxAxisDataName();

        String yAxisDataName =  handEchartsDto.getyAxisDataName();

        String showValField =  handEchartsDto.getShowValField();

        String showDateField =  handEchartsDto.getShowDateField();

        String coordinateSystem =  handEchartsDto.getCoordinateSystem();

        Map<String,Object> map =new HashMap<String,Object>();


        // 题目
        String titleName =null;
        if(!EmptyUtils.isNullOrEmpty(titleFieldName)){titleName =  ReflectUtils.getFieldValue(t,titleFieldName).toString();}

        List subList  = (List)ReflectUtils.getFieldValue(t,subFieldName);

        Set<String> xAxisData =new TreeSet<String>();

        Set<String> yAxisData =new TreeSet<String>();

        // 数据值 --- 单个数据
        List seriesDataValue ;

        EchartBaseSeries echartBaseSeries = new HeatMapSeries();

        if("calendar".equals(coordinateSystem)){((HeatMapSeries)echartBaseSeries).setCoordinateSystem("calendar");
            ((HeatMapSeries)echartBaseSeries).setCalendarIndex(handEchartsDto.getCalendarIndex());
        }


        List<SeriesData> seriesDataList = new ArrayList<SeriesData>();
        SeriesData seriesData =null;

        String xAxisValue =null;
        String yAxisValue =null;
        // 维度 X
        String xDim = null;
        // 维度 y
        String yDim = null;
        for(int i=0;i<subList.size();i++){seriesData =new SeriesData();

            if(!EmptyUtils.isNullOrEmpty(xDimension)){
                // 维度 X
                xDim =  ReflectUtils.getFieldValue(subList.get(i),xDimension).toString();}

            if(!EmptyUtils.isNullOrEmpty(xDimension)){
                // 维度 y
                yDim =  ReflectUtils.getFieldValue(subList.get(i),yDimension).toString();}


            // x 轴的值
            if(!EmptyUtils.isNullOrEmpty(xAxisDataName)){xAxisValue =  ReflectUtils.getFieldValue(subList.get(i),xAxisDataName).toString();
                xAxisData.add(xAxisValue);
            }

            // y 轴的值
            if(!EmptyUtils.isNullOrEmpty(yAxisDataName)){yAxisValue =  ReflectUtils.getFieldValue(subList.get(i),yAxisDataName).toString();
                yAxisData.add(yAxisValue);
            }

            seriesDataValue =new ArrayList();

            // 目前反对 cartesian2d 呈现 x - y 维度
            if("cartesian2d".equals(coordinateSystem)){seriesDataValue.add(xDim);
                seriesDataValue.add(yDim);
            }

            //coordinateSystem 为 calendar series 外面的 data-[value]为工夫 + 某项值的数组
            if("calendar".equals(coordinateSystem)){Object showDate =EmptyUtils.isNullOrEmpty(showDateField)?0:ReflectUtils.getFieldValue(subList.get(i),showDateField);
                seriesDataValue.add(showDate);
            }


            Object showVal =EmptyUtils.isNullOrEmpty(showValField)?0:ReflectUtils.getFieldValue(subList.get(i),showValField);
            seriesDataValue.add(showVal);

            seriesDataValue.add(subList.get(i));

            // 设置值
            seriesData.setValue(seriesDataValue);
//            seriesData.setVisualMap(false);

            if(!EmptyUtils.isNullOrEmpty(iEchartSeries)){iEchartSeries.setSeriesDetailProp(echartBaseSeries,new SeriesLabel(),new SeriesItemStyle(),new SeriesAreaStyle(),new SeriesLineStyle());
                iEchartSeries.setSeriesDataProp(seriesData,new SeriesLabel(),new SeriesItemStyle(),new SeriesAreaStyle(),new SeriesLineStyle());
            }

            seriesDataList.add(seriesData);
            echartBaseSeries.setData(seriesDataList);
        }

        seriesList.add(echartBaseSeries);
        EchartsTitle title =new EchartsTitle();
        title.setText(titleName);

        EchartsXYAxis xAxis =new EchartsXYAxis();
        xAxis.setData(new ArrayList(xAxisData));
        option.setxAxis(xAxis);

        EchartsXYAxis yAxis =new EchartsXYAxis();
        yAxis.setData(new ArrayList(yAxisData));
        option.setyAxis(yAxis);

        option.setSeries(seriesList);

        return option;
    }


    /**
     * 性能形容:
     * @param iEchartSeries 接口
     * @param list 对象
    //     * @param titleFieldName
    //     * @param subFieldName 对象外面须要解决的 list 数据
    //     * @param xDimension 维度 x 轴
    //     * @param yDimension 维度 y
    //     * @param xAxisDataName x 轴须要展现的信息
    //     * @param yAxisDataName y 轴须要展现的信息
    //     * @param showValField 须要展现数据的列
     * @return: java.util.Map<java.lang.String,java.lang.Object>
     * @author: swc
     * @date: 2020/7/2 0002 下午 12:52
     */
    public static <T> List<EchartsOption> createHeatMapOption(IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto) {List<EchartsOption> optionList =new ArrayList<EchartsOption>();
        String coordinateSystem =  handEchartsDto.getCoordinateSystem();

        // 拼接不同年份日历的 series 的值
        List<EchartBaseSeries> seriesList =new ArrayList<EchartBaseSeries>();
        EchartsOption option = null;


        for(int i=0;i<list.size();i++){handEchartsDto.setCalendarIndex(i);
            // 如果 coordinateSystem 是 cartesian2d  默认为 多个 [option] 热力求
            if("cartesian2d".equalsIgnoreCase(coordinateSystem)){optionList.add(createHeatMapOption(iEchartSeries,list.get(i),handEchartsDto));
            }
            // 如果 coordinateSystem 是 calendar  默认为 日历 则是一个 option 的热力求  series 的值为多个 而不是一个
            if("calendar".equalsIgnoreCase(coordinateSystem)){option = createHeatMapOption(iEchartSeries, list.get(i), handEchartsDto);
                seriesList.addAll(option.getSeries());
            }
        }

        if("calendar".equalsIgnoreCase(coordinateSystem)){option.setSeries(seriesList);
            optionList.add(option);
        }

        return optionList;
    }





    // 布告的设置多个 series 的办法
    private void commonSetSeries(IEchartSeries iEchartSeries, Class<? extends EchartBaseSeries> seriesClass, Object[] legends, Object[] fields, List<EchartBaseSeries> mulseries, List[] saveList) throws InstantiationException, IllegalAccessException {
        EchartBaseSeries echartBaseSeries;
        for (int ind = 0; ind < fields.length; ind++) {
            // 获取指定的 series
            echartBaseSeries = seriesClass.newInstance();
            echartBaseSeries.setName((String) legends[ind]);
            echartBaseSeries.setData(saveList[ind]);
            // 设置整体款式[如一条折线或条状图的款式]
            if (!EmptyUtils.isNullOrEmpty(iEchartSeries)) {iEchartSeries.setSeriesDetailProp(echartBaseSeries, new SeriesLabel(), new SeriesItemStyle(), new SeriesAreaStyle(), new SeriesLineStyle());
            }
            mulseries.add(echartBaseSeries);
        }
    }


}

五、为了不便 最初写了工具类【EChartsNewUtil】把策略调用进行封装

注：1. 这里次要看有正文的办法 因为参数是最全的 2. 对于 IEchartSeries ,EchartsStrategy 这两类，IEchartSeries 是针对 series 的数据处理 或增加批改款式（毕竟每个公司 / 每个零碎业务多多少少会有些不同），EchartsStrategy 这个是自定义你本人业务需要的策略（须要继承 EchartsStrategy，这个齐全是从新定义这个办法 IEchartSeries 再次不起作用 除非你主动代码回调到它）

5.1 HandEchartsDto 是封装的参数，用于反射数据源的属性或解决局部业务

/******************************************************************************
 *
 *
 *
 ******************************************************************************
 *
 *****************************************************************************/
package com.ken.sys.common.entity.echarts.dto;

import java.util.List;

/**
 * <ul>
 * <li>Title: HandEchartsDto</li>
 * <li>Description: TODO </li>
 * <li>Copyright: Copyright (c) 2018</li>
 * <li> 微信:tianji_vip</li>
 * </ul>
 *
 * @author swc
 *
 * @date 2020/7/2 0002 下午 13:44
 */
public class HandEchartsDto {

//    该系列应用的坐标系，可选：//            'cartesian2d'
//    应用二维的直角坐标系（也称笛卡尔坐标系），通过 xAxisIndex, yAxisIndex 指定相应的坐标轴组件。//            'geo'
//    应用天文坐标系，通过 geoIndex 指定相应的天文坐标系组件。//‘calendar’//    应用日历坐标系
    private String coordinateSystem ="cartesian2d";

    // 题目[主 - 列名]
    private String titleFieldName;

    // 子对象的属性名[列名]
    private String subFieldName;

    // 维度 x 轴[列名]
    private String xDimension;

    // 维度 y 轴[列名]
    private String yDimension;

    // x 轴须要展现的信息[列名]
    private String xAxisDataName;

    // y 轴须要展现的信息[列名]
    private String yAxisDataName;

    // 须要展现数据的列的属性名[工夫列]
    private String showDateField;

    // 须要展现数据的列的属性名[列名]
    private String showValField;

    // 应用的日历坐标系的 index，在单个图表实例中存在多个日历坐标系的时候有用。private int calendarIndex;

    //legend 的值
    private Object[] legends;

    // 个别为 legend 一一对应的属性项的值
    private Object[] fields;

    // 个别为 fields 一一对应的列的 单个 serie 的 data 外面的 value 值 个别为数组
    private List[] saveList;


    // 是否须要 x 轴
    private boolean requireXAxis =true;


   // 此处省略 get set 办法
  
}

package com.ken.sys.common.util;
import com.ken.sys.common.entity.echarts.dto.HandEchartsDto;
import com.ken.sys.common.entity.echarts.option.EchartsOption;
import com.ken.sys.common.factory.echarts.EchartsStrategyFactory;
import com.ken.sys.common.ifs.IEchartSeries;
import com.ken.sys.common.strategy.echarts.base.EchartsStrategy;
import com.ken.sys.common.strategycontext.echarts.EchartStrategyContext;

import java.util.*;

public class EChartsNewUtil {

    /**
     * 性能形容: 
     * @param type 图形类别
     * @param iEchartSeries 内部接口 用于重写参数 或 款式等
     * @param list  数据源
     * @param handEchartsDto  须要解决的相应字段【list 或 list 的子集外面】* @return: com.ken.sys.common.entity.echarts.option.EchartsOption
     * @param strategy  自定义的策略
     * @author: swc
     * @date: 2020/7/4 0:48
    */ 
    public static <T>EchartsOption creatOption(String type, IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto, EchartsStrategy strategy) {
        // 获取匹配的策略
        if(EmptyUtils.isNullOrEmpty(strategy)){strategy =EchartsStrategyFactory.getEchartsStrategy(type);
        }
        EchartStrategyContext context = new EchartStrategyContext(strategy);
        return context.createOption(iEchartSeries,list,handEchartsDto);
    }

    public static <T>EchartsOption creatOption(String type, List<T> list, HandEchartsDto handEchartsDto) {return creatOption(type,null,list,handEchartsDto,null);
    }

    public static <T>EchartsOption creatOption(String type, List<T> list, HandEchartsDto handEchartsDto,EchartsStrategy strategy) {return creatOption(type,null,list,handEchartsDto,strategy);
    }

    public static <T>EchartsOption creatOption(String type,IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto) {return creatOption(type,iEchartSeries,list,handEchartsDto,null);
    }

    /**
     * 性能形容:
     * @param type 图形类别
     * @param iEchartSeries 内部接口 用于重写参数 或 款式等
     * @param list  数据源
     * @param handEchartsDto  须要解决的相应字段【list 或 list 的子集外面】* @param strategy  自定义的策略
     * @return: com.ken.sys.common.entity.echarts.option.EchartsOption
     * @author: swc
     * @date: 2020/7/4 0:48
     */
    public static <T>List<EchartsOption> creatMulOptionForHeatMap(String type, IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto,EchartsStrategy strategy) {
        // 获取匹配的策略
        if(EmptyUtils.isNullOrEmpty(strategy)){strategy =EchartsStrategyFactory.getEchartsStrategy(type);
        }
        EchartStrategyContext context = new EchartStrategyContext(strategy);
        return context.createMulOption(iEchartSeries,list,handEchartsDto);
    }

    public static <T>List<EchartsOption> creatMulOptionForHeatMap(String type, IEchartSeries iEchartSeries, List<T> list, HandEchartsDto handEchartsDto) {return creatMulOptionForHeatMap(type,iEchartSeries,list,handEchartsDto,null);
    }


    public static <T>List<EchartsOption> creatMulOptionForHeatMap(String type, List<T> list, HandEchartsDto handEchartsDto, EchartsStrategy strategy) {return creatMulOptionForHeatMap(type,null,list,handEchartsDto,strategy);
    }

    public static <T>List<EchartsOption> creatMulOptionForHeatMap(String type, List<T> list, HandEchartsDto handEchartsDto) {return creatMulOptionForHeatMap(type,null,list,handEchartsDto,null);
    }

}

六、测试数据和测试该工具类

局部代码

// 柱状图 折线图
    @Test
    public void barOrLine()throws Exception{
        String type=EChartsUtil.LINE;//BAR
        List<EchartsEntity> list= getData();

        Object[] legends ={"总金额","实付金额"};
        Object[] fields ={"nums1","nums2"};

        List[] saveList =new List[]{new ArrayList<BigDecimal>(),new ArrayList<BigDecimal>()};

        HandEchartsDto dto =new HandEchartsDto();

        dto.setxAxisDataName("name");
        dto.setLegends(legends);
        dto.setFields(fields);
        dto.setSaveList(saveList);

        EchartsOption option = EChartsNewUtil.creatOption(type, new IEchartSeries() {
            @Override
            public void setSeriesDetailProp(EchartBaseSeries series, SeriesLabel label, SeriesItemStyle itemStyle, SeriesAreaStyle areaStyle, SeriesLineStyle lineStyle) {//                ((BarSeries) series).setBarMaxWidth("60%");
//                label.setShow(true);
//                label.setPosition("top");
//                series.setLabel(label);
            }

            @Override
            public void setSeriesDataProp(SeriesData seriesData, SeriesLabel label, SeriesItemStyle itemStyle, SeriesAreaStyle areaStyle, SeriesLineStyle lineStyle) {}}, list, dto);
        option.setSeries(null);
     
    }

源码:https://gitee.com/ten-ken/jav… [先找测试类 TestStrategyEcharts]

微信: tianji_vip

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本文来源于：宋文超 super，专属平台有 csdn、思否(SegmentFault)、简书、开源中国(oschina)，转载请注明出处。