进一步封装highchart,打造自己的图表插件:jHighChart.js

Highcharts 是一个用纯JavaScript编写的一个图表库, 能够很简单便捷的在web网站或是web应用程序添加有交互性的图表。支持的图表类型有曲线图、区域图、柱状图、饼状图、散状点图和综合图表。但是参考官网的实例,我发现如果在项目中频繁使用highchart,按照它的方式还是挺复杂的,我这里所谓的复杂并不是难而是麻烦,因为你每写一个图表你就必须重新写类似于下面结构的javascript代码:

$('#container').highcharts({
        title: {
            text: 'Monthly Average Temperature',
            x: -20 //center
        },
        subtitle: {
            text: 'Source: WorldClimate.com',
            x: -20
        },
        xAxis: {
            categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun','Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },
        yAxis: {
            title: {
                text: 'Temperature (°C)'
            },
            plotLines: [{
                value: 0,
                width: 1,
                color: '#808080'
            }]
        },
        tooltip: {
            valueSuffix: '°C'
        },
        legend: {
            layout: 'vertical',
            align: 'right',
            verticalAlign: 'middle',
            borderWidth: 0
        },
        series: [{
            name: 'Tokyo',
            data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
        }, {
            name: 'New York',
            data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
        }, {
            name: 'Berlin',
            data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
        }, {
            name: 'London',
            data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
        }]
    });

所以如果在项目中使用必定是非常繁琐的,很有必要对highchart进一步封装。封装说的简单点就是找出共通点。多看几个highchart的图表源码就会发现,他们无非就是这么几个:标题(title、subTitle)、X轴(xAxis)、Y轴(yAxis)、图例(legend)、数据点选项(plotOptions)、数据项(series),所以我们只需要对这些个元素进行处理即可。首先先看看我封装的结果:

var jhc = new $.jHighChart({
                renderTo: $("#numberCardChart"),
                chart:{chartBgColor:"#FBFCFD"},
                chartType: "column",
                title: "商户会员统计",
                subtitle: "2014-2015会员统计",
                xAxisName: "时间",
                xCategories:responseData.categories,
                yAxisSetting: [{ key: "numbers",name:"会员数" ,oppositeOption: false}],
                yAxisColumn: [{ key: "numbers",name:"会员数"}],
                series: responseData.series,
                legend:{"enabled":false},
                click: function (params) {
                    queryNumberDetail(params);
                }
        });
    jhc.create();

renderTo为展示的DIV ID,chart为图表的设置、chartType图表的展示类型、title主标题、subtitle副标题、xAxisName X轴名称、xCategoriesX轴数据、yAxisSetting Y轴设置、series数据项。

整个highchart的配置option如下:

var options = $.extend({
          //背景颜色
              chart:{chartBgColor:'#FFFFFF',width:"",height:""},
              //需要展示的位置(哪个DOM元素内)
              renderTo: $(document.body),
              //图表类型:bar,line,spline,column,pie,area,areaspline,combine,bubble,scatter
              chartType: "",
              //图表大标题
              title: "",
              //图表小标题
              subtitle: "",
              //X轴名称
              xAxisName: "",
              //X轴列表数据,是一个JSON的LIST对象
              xCategories:{},
              //Y轴设置,可添加多条Y轴, key-Y轴名称,oppositeOption-true/false(true为right, false为left)
              yAxisSetting: [{ key: "",name:"" ,oppositeOption: false}],
              //key-Y轴对应数据,nane-名称,chartType-图形类型,yIndex-每个指标集需要对应的具体Y轴索引
              yAxisColumn: [{ key: "",name:"",chartType: "", yIndex: 0, color: null}],
              //图表数据源,是一个JSON的LIST对象
              series: {},
              //Point MouseOver事件
              mouseOver: function () { },
              //Point mouseOut事件
              mouseOut: function () { },
              //Point click事件:出发下钻方法
              click: function () { },
              //是否开启导出按钮
              exportButton: true,
              //图标容器大小
              containerSize:{width:null,height:null},
              //图例选项:默认不显示:具体的配置请参看API
              legend:{enabled:false,layout:"",align:"",verticalAlign:"",floating:false,x:"",y:"",backgroundColor:"#FFFFFF"},
              //数据点选项
              //showInLegend:是否显示饼图图例,dataEnable:是否显示饼图数据点
              plotOptions:{showInLegend:false,dataEnable:false},
              //基本参数设置:主要用于设置图表高度、宽度
              chart:{width:"",height:""}
      }, setting);</span></pre>

上面是对javascript部分进行处理,封装。但是我们的数据时通过后台来的,怎么才能将后台数据封装到该插件中去呢?可能心细的博友发现了,在上面的使用方法中注意到了这两个地方:xCategories:responseData.categories、series: responseData.series,responseData为后台的返回数据,categories为X轴数据,series为数据项。在后台我是这样处理的:

201501300001

上面UML是实现后台数据的结构图、其中BuildChartsService为顶层抽象类,向外暴露buildCharts方法,实现图表的子类需要实现createXAxisCategories、createSeries两个方法。ChartBaseAction为构建图表的基础Action,通过Ajax请求,它的主要功能是提供基本的统计数据valueStack,并对数据项进行封装处理。SeriesChartVO、SeriesDatasVO两个类为图表统计数据项的支撑类,其中SeriesChartVO为统计图表数据选项VO,一个seriesChartVO对应一条记录,jHightChart内部实现使用yAxisColumn的key与seriesChartVO的kye进行一一对应。SeriesDatasVO为统计图表数,统计内部数据表现形式为:data:[{name:'',y:'',drilldown:'',params:''}],该类主要是用户数据项的构建和配置,例如配置下钻数据参数等等。

实例

请求Action继承构建图表ChartBaseAction:

public class QueryDailyStatisticsInfoAction extends ChartBaseAction{
</span><span style="color: rgb(0,0,255)">private</span> <span style="color: rgb(0,0,255)">static</span> <span style="color: rgb(0,0,255)">final</span> <span style="color: rgb(0,0,255)">long</span> serialVersionUID = 6822826781517049491L<span style="color: rgb(0,0,0)">;

@Resource
</span><span style="color: rgb(0,0,255)">private</span><span style="color: rgb(0,0,0)"> IHistoryStatisticsDailyTransService historyStatisticsDailyTransService;

@SuppressWarnings(</span>&quot;unchecked&quot;<span style="color: rgb(0,0,0)">)
@Override
</span><span style="color: rgb(0,0,255)">public</span> String execute() <span style="color: rgb(0,0,255)">throws</span><span style="color: rgb(0,0,0)"> Exception {
    List</span>&lt;JSON&gt; list = (List&lt;JSON&gt;) getRequest().getSession().getAttribute(&quot;dailyList&quot;<span style="color: rgb(0,0,0)">);
    
    valueStack </span>=<span style="color: rgb(0,0,0)"> historyStatisticsDailyTransService.getdailyStatisticsInfo(list);
    
    getRequest().getSession().removeAttribute(</span>&quot;dailyList&quot;<span style="color: rgb(0,0,0)">);
    
    </span><span style="color: rgb(0,0,255)">return</span><span style="color: rgb(0,0,0)"> SUCCESS;
}

}

该Action通过service的getdailyStatisticsInfo方法来获取数据,然后构建基本的图表数据参数Map

private Map<String, Object> buildDailyStatisticsInfo(List<String> categories,
            List<JSON> list) throws ServiceException{
        Map<String, Object> categoriesMap = new HashMap<String, Object>();
        categoriesMap.put("list", categories);
    Map</span>&lt;String, Object&gt; seriesMap = <span style="color: rgb(0,0,255)">new</span> HashMap&lt;String, Object&gt;<span style="color: rgb(0,0,0)">();
    seriesMap.put(</span>&quot;seriesList&quot;<span style="color: rgb(0,0,0)">, list);
    
    Map</span>&lt;String, Object&gt; contentMap = <span style="color: rgb(0,0,255)">new</span> HashMap&lt;String, Object&gt;<span style="color: rgb(0,0,0)">();
    </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">X轴数据项</span>
    contentMap.put(&quot;categories&quot;<span style="color: rgb(0,0,0)">, categoriesMap);
    </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">数据项</span>
    contentMap.put(&quot;series&quot;<span style="color: rgb(0,0,0)">, seriesMap);
    
    BuildChartsService service </span>= <span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> DailyStatisticsInfoChart();
    </span><span style="color: rgb(0,0,255)">return</span><span style="color: rgb(0,0,0)"> service.buildCharts(contentMap);
}</span></pre>

最后使用DailyStatisticsInfoChart的buildChart方法来实现图表数据构建

public class DailyStatisticsInfoChart extends BuildChartsService{
@SuppressWarnings(</span>&quot;unchecked&quot;<span style="color: rgb(0,0,0)">)
</span><span style="color: rgb(0,0,255)">protected</span> List&lt;String&gt; createXAxisCategories(Map&lt;String,Object&gt;<span style="color: rgb(0,0,0)"> xAxisMap) {
    List</span>&lt;String&gt; categories = (List&lt;String&gt;) xAxisMap.get(&quot;list&quot;<span style="color: rgb(0,0,0)">);
    </span><span style="color: rgb(0,0,255)">return</span><span style="color: rgb(0,0,0)"> categories;
}

@Override
@SuppressWarnings(</span>&quot;unchecked&quot;<span style="color: rgb(0,0,0)">)
</span><span style="color: rgb(0,0,255)">protected</span> List&lt;SeriesChartVO&gt; createSeries(Map&lt;String,Object&gt;<span style="color: rgb(0,0,0)"> contentMap)
        </span><span style="color: rgb(0,0,255)">throws</span><span style="color: rgb(0,0,0)"> ServiceException {
    List</span>&lt;JSON&gt; jsons = (List&lt;JSON&gt;) contentMap.get(&quot;seriesList&quot;<span style="color: rgb(0,0,0)">);
    
    List</span>&lt;SeriesDatasVO&gt; dataList = <span style="color: rgb(0,0,255)">new</span> ArrayList&lt;SeriesDatasVO&gt;<span style="color: rgb(0,0,0)">();
    SeriesDatasVO datas </span>= <span style="color: rgb(0,0,255)">null</span><span style="color: rgb(0,0,0)">;
    </span><span style="color: rgb(0,0,255)">for</span>(<span style="color: rgb(0,0,255)">int</span> i = 0 ; i &lt; jsons.size() ; i++<span style="color: rgb(0,0,0)">){
        JSONObject json </span>=<span style="color: rgb(0,0,0)"> JSONObject.fromObject(jsons.get(i));
        String name </span>= (String) json.get(&quot;payType&quot;<span style="color: rgb(0,0,0)">);
        Object y </span>= json.get(&quot;amt&quot;<span style="color: rgb(0,0,0)">);
        
        datas </span>= <span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> SeriesDatasVO(name, y);
        dataList.add(datas);
    }
    
    SeriesChartVO chartVO </span>= <span style="color: rgb(0,0,255)">new</span> SeriesChartVO(&quot;dailyStatistics&quot;<span style="color: rgb(0,0,0)">, dataList);
    List</span>&lt;SeriesChartVO&gt; chartList = <span style="color: rgb(0,0,255)">new</span> ArrayList&lt;SeriesChartVO&gt;<span style="color: rgb(0,0,0)">();
    chartList.add(chartVO);
    
    </span><span style="color: rgb(0,0,255)">return</span><span style="color: rgb(0,0,0)"> chartList;
}

}

构建完数据后,最后一步就是使用jHighchart来实现图表了:

jhc = new $.jHighChart({
                renderTo: $("#chartDIV"),
                chartType: "pie",
                title: "商户日结算统计",
                xAxisName: "",
                xCategories:responseData.categories,
                yAxisSetting: [{ key: "dailyStatistics",name:"交易额" ,oppositeOption: false}],
                yAxisColumn: [{ key: "dailyStatistics",name:"总额"}],
                series: responseData.series,
                legend:{"enabled":false},
                plotOptions:{"dataEnable":true},
                click: function (params) {
                    queryDetail(params);
                }
        });
    jhc.create();

 

demo下载

chart.rar


-----原文出自:http://cmsblogs.com/?p=1537,请尊重作者辛勤劳动成果,转载说明出处.

-----个人站点:http://cmsblogs.com

posted @ 2015-01-31 15:05  chenssy  阅读(3187)  评论(2编辑  收藏  举报