Java運用echart進行圖形展示

前段時間項目中要做一個根據數據生成折線圖的功能，並5分鐘刷新一次，進行數據更新。由於之前是用echarts來進行中國地圖展現的，所有這次也用echarts進行圖形展示。

項目目錄如下圖所示：

1.pom.xml文件

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>test</groupId>
<artifactId>test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<properties>
<spring.version>4.1.3.RELEASE</spring.version>
<jackson.version>2.4.2</jackson.version>
<jstl.version>1.2</jstl.version>
<servlet-api.version>2.5</servlet-api.version>
<jsp-api.version>2.0</jsp-api.version>
</properties>

<dependencies>
<!-- JSP相關 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<scope>provided</scope>
<version>${servlet-api.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<scope>provided</scope>
<version>${jsp-api.version}</version>
</dependency>
<!-- Jackson Json處理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<port>8080</port>
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>

2.web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="taotao" version="2.5">
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

<!-- 加載spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- 解決post亂碼 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<!-- springmvc的前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation不是必須的， 如果不配置contextConfigLocation， springmvc的配置文件默認在：WEB-INF/servlet的name+"-servlet.xml" -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

</web-app>

3.applicationContext-service.xml文件

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

<context:component-scan base-package="service"/>
</beans>

4.springmvc.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<context:component-scan base-package="controller" />
<mvc:annotation-driven />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>

<mvc:resources location="/WEB-INF/js/" mapping="/js/**"/>
<mvc:resources location="/WEB-INF/css/" mapping="/css/**"/>


</beans>

5.EchartsEntity.java

package po;

import java.util.List;

public class EchartsEntity {

public String name;
public String type;
public List<?> data;

public EchartsEntity() {

}

public EchartsEntity(String name, String type, List<?> data) {
super();
this.name = name;
this.type = type;
this.data = data;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getType() {
return type;
}

public void setType(String type) {
this.type = type;
}

public List<?> getData() {
return data;
}

public void setData(List<?> data) {
this.data = data;
}


}

6.EchartsServiceImpl.java

package service.impl;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Service;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import po.EchartsEntity;
import service.EchartsService;

@Service
public class EchartsServiceImpl implements EchartsService {

private ObjectMapper mapper = new ObjectMapper();
public String getLineImage() {
List<EchartsEntity> echarts = new ArrayList<EchartsEntity>();
//自定義橫坐標
String[] xAxis = {"周一","周二","周三","周四","周五","周六","周日"};
//自定義三條線
EchartsEntity entity1 = new EchartsEntity("郵件營銷","line",Arrays.asList(120, 132, 101, 134, 90, 230, 210));
EchartsEntity entity2 = new EchartsEntity("聯盟廣告","line",Arrays.asList(220, 182, 191, 234, 290, 330, 310));
EchartsEntity entity3 = new EchartsEntity("視頻廣告","line",Arrays.asList(150, 232, 201, 154, 190, 330, 410));
echarts.add(entity1);
echarts.add(entity2);
echarts.add(entity3);

String[] legend = {"郵件營銷","聯盟廣告","視頻廣告"};
Map<String, Object> resultMap = new HashMap<String, Object>();
resultMap.put("xAxis", xAxis);
resultMap.put("series", echarts);
resultMap.put("legend", legend);
try {
return mapper.writeValueAsString(resultMap);
} catch (JsonProcessingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "";
}

}

7.EchartsTestController.java

package controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import service.EchartsService;

@RestController
@RequestMapping(value="/echarts",produces=MediaType.TEXT_HTML_VALUE+";charset=utf-8")
public class EchartsTestController {

@Autowired
public EchartsService echartsService;

@RequestMapping("/showImage")
public String showImage() {
String value = echartsService.getLineImage();
System.out.println(value);
return value;
}
}

8.ShowPageController.java

package controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class ShowPageController {

@RequestMapping("/{page}")
public String showPage(@PathVariable String page) {

return page;
}
}

9.前台jsp頁面

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="js/jquery-2.1.4/jquery.min.js"></script>
<script type="text/javascript" src="js/ehcarts/echarts-all.js"></script>
<!--
<script type="text/javascript" src="js/echarts-2.2.7/build/dist/echarts-all.js"></script>
-->
<title>Insert title here</title>
</head>
<body>
<div id='line' ></div>
<script type="text/javascript">
var myChart = echarts.init(document.getElementById('line'));
var lineOption = {
title : {
text: '',
subtext: ''
},
tooltip : {
trigger: 'axis' //item 點在哪條線上顯示哪條線上的數據，axis點在哪個坐標點上顯示對於點上所有數據
},
legend: {
data:[]
},
toolbox: {
show : true,
orient : 'vertical',
x: 'right',
y: 'center',
feature : {
mark : {show: true},
dataView : {show: true, readOnly: false},
magicType : {show: true, type: ['line', 'bar']},
restore : {show: true},
saveAsImage : {show: true}
}
},
calculable : true,
xAxis : [
{
type : 'category',
boundaryGap : false,
data : []
}
],
yAxis : [
{
type : 'value',
axisLabel : {
formatter: '{value} '
}
}
],
series : []
};

myChart.setOption(lineOption);
var ajax = function() {
$.ajax({
url : '/echarts/showImage',
success: function(responseText) {
//請求成功時處理
var responseText = eval('(' + responseText + ')');
lineOption.legend.data=responseText.legend;
lineOption.xAxis[0].data = responseText.xAxis;
var serieslist = responseText.series;
//alert(serieslist);
for(var i=0;i<serieslist.length;i++) {
lineOption.series[i] = serieslist[i];
}
//alert(lineOption.series);
myChart.setOption(lineOption,true);
},
complete: function() {
//請求完成的處理
},
error: function() {
//請求出錯處理
alert("加載失敗");
}
})
}

window.setTimeout(ajax,100);
//window.setInterval(ajax,1000*60*5);
</script>
</body>

</html>

運行項目，結果如圖所示：