如何使用Echarts将头条抓取结果以柱状图和饼形图展示?
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如何使用Echarts将头条抓取结果以柱状图和饼形图展示?
后台框架:Spring+SpringMVC+Mybatis
表结构:
CREATE TABLE `article` ( `id` int(20) NOT NULL AUTO_INCREMENT, `title` varchar(255) DEFAULT NULL COMMENT '文章名', `readcount` int(10) DEFAULT NULL COMMENT '阅读次数', `showimgcount` int(1) DEFAULT NULL COMMENT '图片展示数', `type` int(1) DEFAULT NULL COMMENT '类型:1-文章 2-图片 3-视频', `commentcount` int(255) DEFAULT NULL COMMENT '评论数量', `publishtime` timestamp NULL DEFAULT NULL COMMENT '发布时间', `gallerycount` int(10) DEFAULT NULL COMMENT '图片数量-只针对相集', `section` varchar(255) DEFAULT NULL COMMENT '领域', `tagword` varchar(255) DEFAULT NULL COMMENT '关键字', `author` int(20) DEFAULT NULL, PRIMARY KEY (`id`), KEY `t_s_index` (`type`,`section`))
编写查询语句:
<!--查询每个领域的平均阅读量--><select id="selectSection_avg" parameterType="map" resultType="Map">select a.section,avg(a.readcount) as readcount_avg,count(1) as section_count from article awhere a.section is not null and a.section != '' group by a.sectionhaving count(1) > 100</select><!--查询每个文章类型的平均阅读量--><select id="selectType_avg" parameterType="map" resultType="Map">select a.type,avg(a.readcount) as readcount_sum,count(1) as type_count from article agroup by a.type</select><!--查询文章总量--><select id="selectArticleCount" parameterType="map" resultType="int">select count(1) from article</select>
此处省略dao层和service层的查询代码,只展示controller层的代码
@Autowiredprivate TouTiaoService touTiaoService;@RequestMapping("/section")public void section_avg(HttpServletResponse response){ DataSourceContextHolder.setDbType(DataSourceType.DS_TOUTIAO); List<Map<String,Object>> list = touTiaoService.getSectionAvg(); DataSourceContextHolder.setDbType(DataSourceType.DS_EASYWEB); PrintUtils.printMsg(response, list);}@RequestMapping("/type")public void type_avg(HttpServletResponse response){ DataSourceContextHolder.setDbType(DataSourceType.DS_TOUTIAO); List<Map<String,Object>> list = touTiaoService.getTypeAvg(); DataSourceContextHolder.setDbType(DataSourceType.DS_EASYWEB); PrintUtils.printMsg(response, list);}
编写页面
<div class="container"> <div class="row"> <div class="col-sm-12"> <h3> 本页统计数据来源于某头条,闲暇时刻写了一个爬虫,爬取头条的文章,只统计阅读量在1万以上的文章,并且单个类型下的文章数量大于100篇。 共爬取<em id="author_count"></em>,<em id="article_count"></em> </h3> </div> </div> <hr /> <div class="row"> <div class="col-sm-6 col-xs-12 center" id="section_avg"> </div> <div class="col-sm-6 col-xs-12 center" id="section_article"> </div> </div> <div class="row"> <div class="col-sm-6 col-xs-12 center" id="type_count"> </div> <div class="col-sm-6 col-xs-12 center" id="type_avg"> </div> </div></div><!--引入echarts的js文件--><script type="text/javascript" src="<%=JS_PATH%>echarts.min.js"></script><script type="text/javascript" src="<%=JS_PATH%>toutiao.js"></script>
toutiao.js代码:
$(function(){var section_avg = document.getElementById("section_avg");var section_article = document.getElementById("section_article");var type_count = document.getElementById("type_count");var type_avg = document.getElementById("type_avg");var section_avg_chart = echarts.init(section_avg);var section_article_chart = echarts.init(section_article);var type_count_chart = echarts.init(type_count);var type_avg_chart = echarts.init(type_avg);initSectionChart(section_avg_chart,section_article_chart);initTypeChart(type_count_chart,type_avg_chart);});function initSectionChart(chart,chart1){var option = { legend: { data:['各分类平均阅读量'] }, xAxis: [ { type: 'category', data: [], axisLabel:{ rotate:-90, interval:0 } } ], yAxis: [ { type: 'value', name: '平均阅读量', min: 0, axisLabel: { formatter: function(data){ return data/10000+"万"; } } } ], series: [ { name:'各分类平均阅读量', type:'bar', data:[] } ]};var option1 = { legend: { data:['各分类文章数量'] }, xAxis: [ { type: 'category', data: [], axisLabel:{ rotate:-90, interval:0 } } ], yAxis: [ { type: 'value', name: '文章数量', min: 0 } ], series: [ { name:'各分类文章数量', type:'bar', data:[] } ]};$.ajax({url:BASE_PATH+'/toutiao/section.do',type:'get',dataType:'json',success:function(data){var sectionName = [];var section_avg_value = [];var section_count = [];for(var i = 0; i < data.length;i++){sectionName.push(data[i]['section']);section_avg_value.push(data[i]['readcount_avg']);section_count.push(data[i]['section_count']);}option.xAxis[0].data = sectionName;option.series[0].data = section_avg_value;chart.setOption(option);option1.xAxis[0].data = sectionName;option1.series[0].data = section_count;chart1.setOption(option1);}});}function initTypeChart(chart,chart1){var option = { title : { text: '不同文章类型阅读量比例', x:'center' }, legend: { data: [] }, series : [ { name: '不同文章类型阅读量比例', type: 'pie', data:[], label: { normal: { position: 'inner' } } } ]};var option1 = { title : { text: '不同文章类型文章数量比例', x:'center' }, legend: { data: [] }, series : [ { name: '不同文章类型文章数量比例', type: 'pie', data:[], label: { normal: { position: 'inner' } } } ]};$.ajax({url:BASE_PATH+'/toutiao/type.do',type:'get',dataType:'json',success:function(data){var typeName = [];var type_readcount = [];var type_count = [];var sum = 0;var count = 0;for(var i = 0; i < data.length;i++){var type_name = "";if(data[i]['type']==1){type_name = "文章";}if(data[i]['type']==2){type_name="图册";}if(data[i]['type']==3){type_name="视频";}type_readcount.push({"name":type_name+"\n平均阅读量:"+data[i]['readcount_sum'].toFixed(0),"value":data[i]['readcount_sum']});type_count.push({"name":type_name+"\n文章数量:"+data[i]['type_count'].toFixed(0),"value":data[i]['type_count']});sum += data[i]['readcount_sum'];count += data[i]['type_count'];}for(var i = 0;i < type_readcount.length; i++){type_readcount[i]['value'] = type_readcount[i]['value']/sum;type_count[i]['value'] = type_count[i]['value']/count;}option.series[0].data = type_readcount;chart.setOption(option);option1.series[0].data = type_count;chart1.setOption(option1);}});}
展示结果:
演示页面:http://www.weare.net.cn/toutiao.html
源码下载地址请访问<<微儿博客源码分享>>
头条爬虫请访问<<Java爬虫爬取今日头条文章,统计生成图表>>
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