Echarts在JavaWeb中与后台的交互实现

本Web系统后台框架是：Spring+SpringMVC+Mybatis+Shiro+Maven。完整系统搭建的配置过程见上一篇文章：基于Spring+SpringMVC+Mybatis的Web系统搭建

这里仅抽取部分配置介绍实现Echarts图表展示的功能，其中数据均取自数据库，先看效果↓

【本着学习交流的心态，如果你发现错误或者有更好的实现方式，欢迎留言交流。】

1、部分配置

在pom.xml中加载json数据依赖

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.17</version>
</dependency>

在Spring-mvc中如下配置

 1 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
 2 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
 3     <property name="webBindingInitializer" ref="webBindingInitializer"/>
 4     <property name="messageConverters">
 5         <list>
 6             <ref bean="stringConverter" />
 7             <ref bean="fastjsonConverter" />
 8         </list>
 9     </property>
10 </bean>
11 <!-- 解析String请求数据 -->
12 <bean id="stringConverter"
13       class="org.springframework.http.converter.StringHttpMessageConverter">
14     <property name="supportedMediaTypes">
15         <list>
16             <value>text/plain;charset=UTF-8</value>
17         </list>
18     </property>
19 </bean>
20 
21 
22 <!-- 解析json请求数据，将json转换为java对象 -->
23 <bean id="fastjsonConverter"
24       class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
25     <property name="supportedMediaTypes">
26         <list>
27             <!-- 这里顺序不能反，一定先写text/html，不然ie下出现下载提示 -->
28             <value>text/html;charset=UTF-8</value>
29             <value>application/json;charset=UTF-8</value>
30         </list>
31     </property>
32     <property name="features">
33         <array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
34             <!-- 空值继续输出 -->
35             <value>WriteMapNullValue</value>
36             <!-- 防止循环引用 -->
37             <value>DisableCircularReferenceDetect</value>
38             <!-- 格式化日期,默认格式为：yyyy-MM-dd HH:mm:ss -->
39             <value>WriteDateUseDateFormat</value>
40         </array>
41     </property>
42 </bean>
43 <!-- 防止循环引用 -->
44 <bean id="DisableCircularReferenceDetect" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean">
45     <property name="staticField" value="com.alibaba.fastjson.serializer.SerializerFeature.DisableCircularReferenceDetect"></property>
46 </bean>
47 
48 <!-- ContentNegotiatingViewResolver视图解析器，返回多视图 -->
49 <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
50     <property name="order" value="1"/>
51     <!-- 这里是否忽略掉accept header，默认就是false -->
52     <property name="ignoreAcceptHeader" value="true" />
53     <!-- 启用参数支持 -->
54     <property name="favorParameter" value="false"/>
55     <!-- 启用扩展名支持 -->
56     <property name="favorPathExtension" value="true"/>
57     <!-- 如果所有的mediaType都没匹配上，就会使用defaultContentType -->
58     <property name="defaultContentType" value="text/html" />
59 
60     <property name="mediaTypes">
61         <map>
62             <entry key="json" value="application/json" />
63             <entry key="xml" value="application/xml" />
64         </map>
65     </property>
66 
67     <property name="defaultViews">
68         <list>
69             <!-- json视图 -->
70             <bean class="com.alibaba.fastjson.support.spring.FastJsonJsonView">
71                 <property name="extractValueFromSingleKeyModel" value="true" />
72                 <property name="features">
73                     <array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
74                         <!-- 空值继续输出 -->
75                         <value>WriteMapNullValue</value>
76                         <!-- 防止循环引用 -->
77                         <value>DisableCircularReferenceDetect</value>
78                         <!-- 格式化日期,默认格式为：yyyy-MM-dd HH:mm:ss -->
79                         <value>WriteDateUseDateFormat</value>
80                     </array>
81                 </property>
82             </bean>
83         </list>
84     </property>
85 </bean>

Spring-mvc.xml

2、Controller

 1 @Controller
 2 @RequestMapping(value = "/view")
 3 public class EchartsController {
 4     @Resource
 5     private EchartService echartService;
 6 
 7     @RequestMapping(value = "/rain.html",method = RequestMethod.GET)
 8     @ResponseBody
 9     public Object showChart(){
10         Map<String, Object> map = new HashMap<String, Object>();
11         List<Float> clist1 = new ArrayList<Float>();
12         List<Float> clist2 = new ArrayList<Float>();
13         List<Float> clist3 = new ArrayList<Float>();
14 
15         List<EcBar> chartList = echartService.listBar();
16 
17         for(EcBar cl : chartList){
18             clist1.add(cl.getEvaporation());
19             clist2.add(cl.getRainfall());
20             clist3.add(cl.getAvgtemp());
21         }
22         map.put("c_eva",clist1);
23         map.put("c_rain",clist2);
24         map.put("c_avgt",clist3);
25         map.put("success1",true);
26         return map;
27     }
28 }

3、Ajax动态获取数据

showChart.js

  1 var chartOutChar = null;
  2 
  3 var option1 = {
  4     tooltip: {
  5         trigger: 'axis'
  6     },
  7     toolbox: {
  8         feature: {
  9             dataView: {show: true, readOnly: false},
 10             magicType: {show: true, type: ['line', 'bar']},
 11             restore: {show: true},
 12             saveAsImage: {show: true}
 13         }
 14     },
 15     legend: {
 16         data:['蒸发量','降水量','平均温度']
 17     },
 18     xAxis: [
 19         {
 20             type: 'category',
 21             data: ['1月','2月','3月','4月','5月','6月','7月','8月','9月','10月','11月','12月']
 22         }
 23     ],
 24     yAxis: [
 25         {
 26             type: 'value',
 27             name: '水量',
 28             min: 0,
 29             max: 250,
 30             interval: 50,
 31             axisLabel: {
 32                 formatter: '{value} ml'
 33             }
 34         },
 35         {
 36             type: 'value',
 37             name: '温度',
 38             min: 0,
 39             max: 25,
 40             interval: 5,
 41             axisLabel: {
 42                 formatter: '{value} °C'
 43             }
 44         }
 45     ],
 46     series: [
 47         {
 48             name:'蒸发量',
 49             type:'bar',
 50             data:[]
 51         },
 52         {
 53             name:'降水量',
 54             type:'bar',
 55             data:[]
 56         },
 57         {
 58             name:'平均温度',
 59             type:'line',
 60             yAxisIndex: 1,
 61             data:[]
 62         }
 63     ]
 64 };
 65 
 66 function loadChartOut() {
 67     $.getJSON('/maze/rest/view/rain.html', function (data) {
 68         //上面这个url是重点，组成为：项目名/过滤前缀/Controller中mapping值，当页面加载此js时，它会向后台取数据
 69         if (data.success1) {
 70             chartOutChar.showLoading({text: '正在努力的读取数据中...'});
 71             chartOutChar.setOption({
 72                 series: [
 73                     {
 74                         name:'蒸发量',
 75                         data:data.c_eva
 76                     },
 77                     {
 78                         name:'降水量',
 79                         data:data.c_rain
 80                     },
 81                     {
 82                         name:'平均温度',
 83                         data:data.c_avgt
 84                     }
 85                 ]
 86             });
 87             chartOutChar.hideLoading();
 88         }else {
 89             alert('提示', data.msg);
 90         }
 91     });
 92 }
 93 
 94 
 95 //载入图表
 96 $(function () {
 97     chartOutChar = echarts.init(document.getElementById('showChart'));
 98     chartOutChar.setOption(option1);
 99     loadChartOut();
100     window.addEventListener('resize', function () {
101         chartOutChar.resize();
102         mychart.resize();
103     });
104 });

4、Jsp页面

 1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 2 <script type="text/javascript" src="hemi/js/echarts.js"></script>
 3 <script type="text/javascript" src="hemi/js/showChart.js"></script>
 4 <script type="text/javascript" src="hemi/js/funnelView.js"></script>
 5 
 6 <h3 class="page-title">
 7     Echarts 展示 <small>可视化图表</small>
 8 </h3>
 9 </div>
10 
11 <div class="row">
12     <div class="col-lg-6 col-sm-12 col-xs-12 col-sm-12">
13         <div id="showChart" style="width:100%;height:600px;margin-left:0px;margin-right:6px;margin-bottom:8px;float:left;overflow:hidden;"></div>
14     </div>
15 
16     <div class="col-lg-6 col-sm-12 col-xs-12 col-sm-12">
17         <div id="showFunnelChart" style="width:100%;height:600px;margin-left:0px;margin-right:6px;margin-bottom:8px;float:left;overflow:hidden;"></div>
18     </div>
19 </div>

THE END.

posted @ 2016-12-28 12:15 日青天阅读(31377) 评论(2) 编辑收藏举报

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Echarts在JavaWeb中与后台的交互实现

1、部分配置

2、Controller

3、Ajax动态获取数据

4、Jsp页面

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