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  • ECharts访问后台,JSON格式返回数据实例

    完成图

     

    一、页面代码

    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
        <meta charset="utf-8">
        <title>ECharts</title>
        <script type="text/javascript" src="${pageContext.request.contextPath}/js/cac-all.js"></script>
        <script src="${pageContext.request.contextPath}/js/echarts.min.js"></script>
    </head>
    <body>
        
        <!-- 为ECharts准备一个具备大小(宽高)的Dom -->
        <div id="main" style="height: 600px;" ></div>
            
    <script type="text/javascript">
        
       var myChart;
        // 绘制图表。
        $(document).ready(function(){
         // 基于准备好的dom,初始化echarts实例
        myChart = echarts.init(document.getElementById('main'));
            
            // 使用刚指定的配置项和数据显示图表。
            option ={
                    title : {
                        text: '双基识别查询结果',
                        subtext: '单位/天'
                    },
                    tooltip : {        //提示框设置
                        trigger: 'axis'    
                    },        //当trigger为’item’时只会显示该点的数据,为’axis’时显示该列下所有坐标轴所对应的数据
                    color:['#87CEEB','#EE2C2C','#FF00FF','#EEEE00','#D1D1D1'],
                    legend: {    //图例
                        data:['合法车辆','无牌车辆','无卡车辆','嫌疑车辆','其他车辆']
                    },
                    calculable : false,//设置图表为不可拖拽
                    dataZoom: [{     //滚动条属性设置
                        type: 'slider',
                        show: true,
                        xAxisIndex: [0],
                        left: '9%',
                        bottom: -5,
                        start: 0,    //滚动条显示数据窗口范围的起始 百分比  
                        end: 100 
                    }],
                    xAxis : [                        //  X轴
                        {
                            type : 'category',
                            
                            data : []    //在下面访问后台动态加载进来数据
                        }
                    ],
                    yAxis : [
                        {
                            type : 'value'        //横轴默认为类目型'category',纵轴默认为数值型'value'
                        }
                    ],
                    series : [
                        {
                            name:'合法车辆',
                            type:'bar',
                            itemStyle: {
                                normal: {
                                    color: function(params) {
                                        var colorList = [
                                          '#87CEEB','#87CEEB','#87CEEB','#87CEEB','#87CEEB',
                                           '#87CEEB','#87CEEB'
                                        ];
                                        return colorList[params.dataIndex]
                                    }
                                }
                            },
                            data:[],    
                        },
                        {
                            name:'无牌车辆',
                            type:'bar',
                            itemStyle: {
                                normal: {
                                    color: function(params) {
                                        var colorList = [
                                          '#EE2C2C','#EE2C2C','#EE2C2C','#EE2C2C','#EE2C2C',
                                           '#EE2C2C','#EE2C2C'
                                        ];
                                        return colorList[params.dataIndex]
                                    }
                                }
                            },
                            data:[],
                        },
                        {
                            name:'无卡车辆',
                            type:'bar',
                            itemStyle: {
                                normal: {
                                    color: function(params) {
                                        var colorList = [
                                          '#FF00FF','#FF00FF','#FF00FF','#FF00FF','#FF00FF',
                                           '#FF00FF','#FF00FF'
                                        ];
                                        return colorList[params.dataIndex]
                                    }
                                }
                            },
                            data:[],
                        },
                        {
                            name:'嫌疑车辆',
                            type:'bar',
                            itemStyle: {
                                normal: {
                                    color: function(params) {
                                        var colorList = [
                                          '#EEEE00','#EEEE00','#EEEE00','#EEEE00','#EEEE00',
                                           '#EEEE00','#EEEE00'
                                        ];
                                        return colorList[params.dataIndex]
                                    }
                                }
                            },
                            data:[],
                        },
                        {
                            name:'其他车辆    ',
                            type:'bar',
                            itemStyle: {
                                normal: {
                                    color: function(params) {
                                        var colorList = [
                                          '#D1D1D1','#D1D1D1','#D1D1D1','#D1D1D1','#D1D1D1',
                                           '#D1D1D1','#D1D1D1'
                                        ];
                                        return colorList[params.dataIndex]
                                    }
                                }
                            },
                            data:[],
                        }
                    ]
                };
            myChart.setOption(option);
            
            
            
           var rightfulVehicleCount=[];          //合法车辆数量 X轴
           var noPlateVehicleCount=[];        //无牌车辆
           var noCardVehicleCount=[];          //无卡车辆
           var suspectVehicleCount=[];        //嫌疑车辆
           var otherVehicleCount=[];        //其他车辆
           var cutTime=[];        //截断时间   
           var findTime ={};    //传入后台参数
               
               
           $.ajax({
               type: "post",
               url: "${pageContext.request.contextPath}/appDbssResult/test.do",
               data: findTime,
               dataType: "json",    //返回json格式
               success: function(findResult){
                   if (findResult) {
                       for(var i=0;i<findResult.matchType5Count.length;i++){       
                          rightfulVehicleCount.push(findResult.matchType5Count[i]);    
                        }
                       for(var i=0;i<findResult.matchType6Count.length;i++){       
                          noPlateVehicleCount.push(findResult.matchType6Count[i]);    
                         }
                       for(var i=0;i<findResult.matchType7Count.length;i++){       
                          noCardVehicleCount.push(findResult.matchType7Count[i]);    
                         }
                       for(var i=0;i<findResult.matchType8Count.length;i++){       
                          suspectVehicleCount.push(findResult.matchType8Count[i]);    
                         }
                       for(var i=0;i<findResult.matchType9Count.length;i++){       
                          otherVehicleCount.push(findResult.matchType9Count[i]);    
                         }
                       for(var i=0;i<findResult.timeArray.length;i++){       
                           cutTime.push(findResult.timeArray[i]);    
                         }
                       
                      myChart.setOption({        //加载数据到图表中
                          xAxis : [                        //  X轴
                           {
                              data: cutTime    }
                           ],
                          series: [            // 根据名字对应到相应的系列
                           {     name: '合法车辆',
                               data: rightfulVehicleCount    }
                           ,
                           {  name: '无牌车辆',
                               data: noPlateVehicleCount    }
                           ,
                           {  name: '无卡车辆',
                               data: noCardVehicleCount    }
                            ,          
                           {  name: '嫌疑车辆',
                               data: suspectVehicleCount    }
                            ,          
                           {  name: '其他车辆',
                               data: otherVehicleCount }
                           ]
                       });
                      
                      
                    }
               },
               error: function(){
               }
           })
            
        });
        
    </script>
        
    </body>
    
    </html>

     二、后台代码

    @RequestMapping("test")
    public ModelAndView test(String start,String end) {
        ModelAndView mv = new ModelAndView();
        mv.setView(Jackson2Util.jsonView());    //返回Json视图,不带变量名做为根节点
        AppDbssResult result = new AppDbssResult();
        String[] timeArray = new String[] {"2018-01-01","2018-01-02","2018-01-03","2018-01-04","2018-01-05","2018-01-06","2018-01-07"};
        result.setTimeArray(timeArray);
        
        Integer[] count5 = {0, 0, 0, 176, null, null, null};        //    车辆类型 5-9
        Integer[] count6 = {0, 154, 0, 0, null, null, null};
        Integer[] count7 = {179, 0, 0, 0, null, null, null};
        Integer[] count8 = {0, 0, 85, 0, null, null, null};
        Integer[] count9 = {0, 0, 0, 176, null, null, null};
        
        result.setMatchType5Count(count5);
        result.setMatchType6Count(count6);
        result.setMatchType7Count(count7);
        result.setMatchType8Count(count8);
        result.setMatchType9Count(count9);
        
        
        mv.addObject(result);    //返回Json视图,不带变量名做为根节点
        
        return mv;
    }
    public class Jackson2Util {
        public static MappingJackson2JsonView jsonView()
        {
            MappingJackson2JsonView mjjv=new MappingJackson2JsonView();
            mjjv.setExtractValueFromSingleKeyModel(true);
            return mjjv;
        }
    }
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  • 原文地址:https://www.cnblogs.com/Donnnnnn/p/9908974.html
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