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  • 前端数据可视化插件highchats简单应用

    环境：SpringMVC+spring+mybatis、前端数据来源为Oracle数据库Scott用户下的emp表

    report.jsp

    <%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<!-- 页面meta -->
<meta charset="utf-8">
<title>highcharts测试</title>
    <script>
        var contextPath = "${pageContext.request.contextPath}";
        var data = [
            parseInt("${mapList[0]['NUM']}"),
            parseInt("${mapList[1]['NUM']}"),
            parseInt("${mapList[2]['NUM']}"),
            parseInt("${mapList[3]['NUM']}"),
            parseInt("${mapList[4]['NUM']}")
        ];
    </script>
    <!-- 引入jQuery -->
    <script type="text/javascript" src="../js/jquery-1.8.0.js"></script>
    <!-- 引入highcharts.js -->
    <script type="text/javascript" src="../js/highcharts.js"></script>
    <!-- 引入自定义js -->
    <script type="text/javascript" src="../js/report.js"></script>

</head>

<body>
    <div>
        <!-- 柱状图容器 -->
        <div id="container" style=" 500px;height:400px;float:left"></div>
        <!-- 饼状图容器 -->
        <div id="container1" style=" 500px;height:400px;float:left"></div>
    </div>
    <div id="detail" style="clear: left">

    </div>

</body>

</html>
    View Code

    report.js

    $(function(){
    // 初始化柱状图
    $('#container').highcharts(initMcRete(data));
    // 初始化饼状图
    initPieChart();
    console.log(contextPath);
});

function initMcRete(data){
    $('#container').highcharts({
        chart: {
            type: 'column'
        },
        credits: {
            enabled: false
        },
        title: {
            text: "大标题"
        },
        subtitle: {
            text: "小标题"
        },
        xAxis: {
            type: 'category'
        },
        yAxis: {
            min: 0,
            title: {
                text: '人数 (个)'
            }
        },
        plotOptions: {
            series: {
                borderWidth: 0,
                dataLabels: {
                    enabled: true,
                    format: '{y}'
                }
            }
        },
        series:
            [{
                name: '各个职业人数统计',
                colorByPoint: true,
                data: [{
                    name: 'CLERK',
                    y: data[0]
                }, {
                    name: 'SALESMAN',
                    y: data[1]
                }, {
                    name: 'MANAGER',
                    y: data[2]
                } ,{
                    name: 'ANALYST',
                    y:data[3]
                } ,{
                    name: 'PRESIDENT',
                    y: data[4]
                }]
            }]
    });
}

function initPieChart() {
    var clickFunc = function(e) {
        var param = e.point.name;
        queryPieChartDetail(param);
    };
    // 查询饼状图数据
    queryData(function(response){
            if (response.total <= 0) {
                $('#container1').html("<div class='nodata'>暂无数据！</div>");
            } else {
            var data = [
                ["800~2000", response['A1']],
                ["2001~4000", response['A2']],
                ["4001~6000", response['A3']]
            ];
            //var total = data[0]+ data[1] + data[2];
            $('#container1').highcharts(getOptions(data, clickFunc, "薪资分布饼状图"));
        }
    });
}

function queryData(successCallback) {
    $.ajax({
        type :"POST",
        dataType : "json",
        url : contextPath + "/employee/getPieChart",
        success : function(data) {
            successCallback(data);
        },
        error : function(data) {
            alert("数据获取异常！" + data);
            return;
        }
    });
}

function queryPieChartDetail(param) {
    $.ajax({
        type :"POST",
        data : {"param" : param},
        dataType : "json",
        async : false,
        url : contextPath + "/employee/getPieDetail",
        success : function(data) {
            var div = document.getElementById("detail");
            var str = "<table border='1px'>";
            str += "<th>empno</th><th>ename</th><th>job</th><th>sal</th>";
            $.each(data, function (index, item) {
                str += "<tr>";
                var empno = "<td>" + item.empno + "</td>";
                var ename = "<td>" + item.ename + "</td>";
                var job = "<td>" + item.job + "</td>";
                var sal = "<td>" + item.sal + "</td>";
                str += empno + ename + job + sal;
                str += "</tr>";
            });
            str += "</table>";
            console.log(str);
            div.innerHTML = str;
        },
        error : function(data) {
            alert("数据获取异常！" + data);
            return;
        }
    });
}

function getOptions(data, clickFunc, title) {
    var noop = function(e) {};
    clickFunc = clickFunc || noop;
    return {
        chart: {
            plotBackgroundColor: null,
            plotBorderWidth: null,
            plotShadow: false
        },
        credits: {
            enabled: false
        },
        title :{
            text:title
        },
        legend:{
            verticalAlign:'middle',
            align:'right',
            layout: "vertical",
            labelFormat: "{name}:{percentage:.1f}%"
        },
        colors: ['#7cb5ec', '#f7a35c', '#90ed7d', '#8085e9', '#f15c80',
            '#e4d354', '#8085e8', '#8d4653', '#91e8e1', '#434348'],
        tooltip: {
            headerFormat: '',
            pointFormat: '<b>{point.name} : {point.percentage:.1f}% ({point.y})</b>',
        },
        plotOptions: {
            pie: {
                allowPointSelect: true,
                cursor: 'pointer',
                dataLabels: {
                    enabled: true,
                    format: '{point.percentage:.1f}%',
                    connectorWidth:0,
                    connectorPadding:0,
                    distance:-30
                },
                showInLegend: true,
                events: {
                    click: clickFunc
                }
            }
        },
        series: [{
            type: 'pie',
            data: data
        }]
    };
}
    View Code

    spring-mvc.xml

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

    <!-- 扫描controller的注解，别的不扫描 -->
    <context:component-scan base-package="com.alphajuns.controller">
    </context:component-scan>

    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/pages/" />
        <!-- 文件的后缀名 -->
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 设置静态资源不过滤 -->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/img/" mapping="/img/**" />
    <mvc:resources location="/js/" mapping="/js/**" />
    <mvc:resources location="/plugins/" mapping="/plugins/**" />

    <!-- 开启对SpringMVC注解的支持 -->
    <mvc:annotation-driven />

    <!--
        支持AOP的注解支持，AOP底层使用代理技术
        JDK动态代理，要求必须有接口
        cglib代理，生成子类对象，proxy-target-class="true" 默认使用cglib的方式
    -->
    <aop:aspectj-autoproxy proxy-target-class="true"/>

</beans>
    View Code

    applicationContext.xml

    <?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 开启注解扫描，管理service和dao -->
    <context:component-scan base-package="com.alphajuns.service.*">
    </context:component-scan>
    <context:component-scan base-package="com.alphajuns.dao">
    </context:component-scan>

    <context:property-placeholder location="classpath:db.properties"/>
    <!-- 配置连接池 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${oracle.driver}"/>
        <property name="jdbcUrl" value="${oracle.url}"/>
        <property name="user" value="${oracle.username}"/>
        <property name="password" value="${oracle.password}"/>
    </bean>

    <!-- 把交给IOC管理 SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 扫描dao接口 -->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.alphajuns.dao"/>
    </bean>

    <!-- 配置Spring的声明式事务管理 -->
    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>
    View Code

    db.properties

    oracle.driver=oracle.jdbc.driver.OracleDriver
oracle.url=jdbc:oracle:thin:@localhost:1521:orcl
oracle.username=scott
oracle.password=tiger
    View Code

    log4j.properties

    # Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m


# LOGFILE is set to be a File appender using a PatternLayout.
# log4j.appender.LOGFILE=org.apache.log4j.FileAppender
# log4j.appender.LOGFILE.File=d:axis.log
# log4j.appender.LOGFILE.Append=true
# log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
# log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m
    View Code

    web.xml

    <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <!-- 配置加载类路径的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:applicationContext.xml</param-value>
    </context-param>

    <!-- 配置监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

    <!-- 解决中文乱码过滤器 -->
    <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>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 前端控制器（加载classpath:springmvc.xml 服务器启动创建servlet） -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <!-- 服务器启动的时候，让DispatcherServlet对象创建 -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <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>
</web-app>
    View Code

    pom.xml

    <?xml version="1.0" encoding="UTF-8"?>

<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>com.alphajuns</groupId>
  <artifactId>util</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>util Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
    <spring.version>5.0.2.RELEASE</spring.version>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
  </properties>

  <dependencies>
    <!-- mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.5</version>
    </dependency>
    <!-- spring-mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!-- ant -->
    <dependency>
      <groupId>org.apache.ant</groupId>
      <artifactId>ant</artifactId>
      <version>1.9.7</version>
    </dependency>
    <!-- pdf -->
    <dependency>
      <groupId>com.itextpdf</groupId>
      <artifactId>itextpdf</artifactId>
      <version>5.5.13</version>
    </dependency>
    <!-- log start -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <!-- log end -->
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.9</version>
    </dependency>
    <dependency>
      <groupId>commons-collections</groupId>
      <artifactId>commons-collections</artifactId>
      <version>3.2.1</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.6</version>
    </dependency>
    <!-- json -->
    <dependency>
      <groupId>net.sf.json-lib</groupId>
      <artifactId>json-lib</artifactId>
      <version>2.4</version>
    </dependency>
    <!-- spring -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</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-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- oracle -->
    <dependency>
      <groupId>com.oracle</groupId>
      <artifactId>ojdbc6</artifactId>
      <version>12.1.0.1-atlassian-hosted</version>
    </dependency>
    <!-- 编码识别 -->
    <dependency>
      <groupId>com.ibm.icu</groupId>
      <artifactId>icu4j</artifactId>
      <version>59.1</version>
    </dependency>
    <!-- c3p0 -->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <!-- 引入junit -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-mapper-asl -->
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-mapper-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.10.3</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.10.3</version>
    </dependency>
  </dependencies>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.2</version>
          <configuration>
            <source>1.8</source>
            <target>1.8</target>
            <encoding>UTF-8</encoding>
            <showWarnings>true</showWarnings>
          </configuration>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>
    View Code

    EmployeeController.java

    package com.alphajuns.controller;

import com.alphajuns.pojo.Employee;
import com.alphajuns.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

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

/**
 * @ClassName EmployeeController
 * @Description TODO
 * @Author AlphaJunS
 * @Date 2020/3/25 19:50
 * @Version 1.0
 */
@Controller
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;
    
    @RequestMapping("/findAllEmp")
    public ModelAndView findAllEmp() {
        ModelAndView mv = new ModelAndView();
        List<Employee> allEmp = employeeService.findAllEmpByAnnotation();
        mv.addObject("allEmp", allEmp);
        System.out.println(allEmp);
        mv.setViewName("report");
        return mv;
    }

    @RequestMapping("/queryPersonNumGroupByJob")
    public ModelAndView queryPersonNumGroupByJob() {
        ModelAndView mv = new ModelAndView();
        List<Map<String, ?>> mapList = employeeService.queryPersonNumGroupByJob();
        mv.addObject("mapList", mapList);
        mv.setViewName("report");
        return mv;
    }

    @RequestMapping("/getPieChart")
    @ResponseBody
    public Map getPieChart() {
        Map pieChartMap = new HashMap();
        pieChartMap = employeeService.getPieChart();
        return pieChartMap;
    }

    @RequestMapping("/getPieDetail")
    @ResponseBody
    public List<Employee> getPieDetail(@RequestParam String param) {
        List<Employee> pieDetailList = employeeService.getPieDetail(param);
        return pieDetailList;
    }

}

    EmployeeService.java

    package com.alphajuns.service;

import com.alphajuns.pojo.Employee;

import java.util.List;
import java.util.Map;

public interface EmployeeService {

    List<Employee> findAllEmpByAnnotation();

    List<Map<String, ?>> queryPersonNumGroupByJob();

    Map<String, ?> getPieChart();

    List<Employee> getPieDetail(String param);
}
    View Code

    EmployeeServiceImpl.java

    package com.alphajuns.service.impl;

import com.alphajuns.dao.IEmpDao;
import com.alphajuns.pojo.Employee;
import com.alphajuns.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;

/**
 * @ClassName EmployeeServiceImpl
 * @Description TODO
 * @Author AlphaJunS
 * @Date 2020/3/25 19:51
 * @Version 1.0
 */
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private IEmpDao empDao;

    @Override
    public List<Employee> findAllEmpByAnnotation() {
        List<Employee> allEmp = empDao.findAllEmpByAnnotation();
        return allEmp;
    }

    @Override
    public List<Map<String, ?>> queryPersonNumGroupByJob() {
        List<Map<String, ?>> mapList = empDao.queryPersonNumGroupByJob();
        return mapList;
    }

    @Override
    public Map<String, ?> getPieChart() {
        Map<String, ?> pieChartMap = empDao.getPieChart();
        return pieChartMap;
    }

    @Override
    public List<Employee> getPieDetail(String param) {// "800~2000"
        String[] split = param.split("~");
        // 800
        int min = Integer.parseInt(split[0]);
        // 2000
        int max = Integer.parseInt(split[1]);
        List<Employee> pieDetailList = empDao.getPieDetail(min, max);
        return pieDetailList;
    }

}
    IEmpDao.java
    package com.alphajuns.dao;

import com.alphajuns.pojo.Employee;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;
import java.util.Map;

public interface IEmpDao {

    @Select("select * from emp")
    List<Employee> findAllEmpByAnnotation();

    @Select("SELECT job, count(*) AS NUM FROM EMP group by job")
    List<Map<String, ?>> queryPersonNumGroupByJob();

    @Select("SELECT
" +
            "	count( a1 ) AS A1,
" +
            "	count( a2 ) AS A2,
" +
            "	count( a3 ) AS A3 
" +
            "FROM
" +
            "	(
" +
            "	SELECT
" +
            "		( CASE WHEN sal <= 2000 AND sal >= 800 THEN SAL END ) AS a1,
" +
            "		( CASE WHEN sal <= 4000 AND sal > 2000 THEN SAL END ) AS a2,
" +
            "		( CASE WHEN sal <= 6000 AND sal > 4000 THEN SAL END ) AS a3 
" +
            "	FROM
" +
            "	emp 
" +
            "	) t")
    Map<String, ?> getPieChart();

    @Select("select * from emp where sal >= #{min} and sal <= #{max}")
    List<Employee> getPieDetail(@Param("min") int min, @Param("max") int max);

}
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  • 原文地址：https://www.cnblogs.com/alphajuns/p/12588426.html
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