基于若依springboot架构实现数据多维统计-阿里云开发者社区

需求背景

项目中需要一个统计功能，同时可以根据勾选不同维度的统计字段来实现列表动态增减，实现效果如图：https://pan.baidu.com/s/1D9cBOWJ2q6rqL7BpU_wcMQ?pwd=wx6q，由于语雀编辑器暂时不支持视频上传，这里是百度网盘的免提取码链接，可直接观看

代码实现

首先需要处理的是页面动态增减列

页面代码

accountFlowInfoRecordData.html

<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org" xmlns:shiro="http://www.pollix.at/thymeleaf/shiro">
<head>
  <th:block th:include="include :: header('流转记录统计列表')" />
</head>
<body class="gray-bg">
     <div class="container-div">
    <div class="row">
      <div class="col-sm-12 search-collapse">
        <form id="formId">
          <div class="select-list">
            <ul>
              <li>
                流转类型：
                <select name="channelType" th:with="type=${@dict.getType('flow_info_channel_type')}">
                  <option value="">请选择</option>
                  <option th:each="dict : ${type}" th:text="${dict.dictLabel}" th:value="${dict.dictValue}"></option>
                </select>
              </li>
              <li>
                数据来源：
                <input type="text" name="createDeptName" id="createDeptName" readonly="readonly" onclick="ztreeShowDept();"/>
                <input type="text"  name="params[createDeptIds]" id="createDeptId" style="display: none"/>
              </li>
              <li>
                流转部门：
                <input type="text" name="flowDeptName" id="flowDeptName" readonly="readonly" onclick="ztreeShowDept2();"/>
                <input type="text"  name="params[flowDeptIds]" id="flowDeptId" style="display: none"/>
              </li>
              <li>
                考种：
                <select name="examTypeId">
                  <option value="">请选择</option>
                  <option  th:each="examType:${examTypes}" th:value="${examType.id}" th:text="${examType.examName}"></option>
                </select>
              </li>
              <li>
                班次：
                <select name="shiftId" th:with="type=${@dict.getType('intendedShift')}">
                  <option value="">请选择</option>
                  <option th:each="dict : ${type}" th:text="${dict.dictLabel}" th:value="${dict.dictValue}"></option>
                </select>
              </li>
              <li>
                员工：
                <input type="text" name="userName" id="userName" readonly="readonly" onclick="ztreeShowUser();"/>
                <input type="text"  name="params[userIds]" id="userId" style="display: none"/>
              </li>
              <li>
                登记时间：
                <input type="text" readonly="readonly" placeholder="时间范围" name="accountTime" id="accountTime"/>
                <input type="hidden" name="params[accountStartTime]" id="accountStartTime"/>
                <input type="hidden" name="params[accountEndTime]" id="accountEndTime"/>
              </li>
              <li>
                <a class="btn btn-primary btn-rounded btn-sm" onclick="mysearch();"><i
                    class="fa fa-search"></i>&nbsp;搜索</a>
                <a class="btn btn-warning btn-rounded btn-sm" onclick="reset();"><i
                    class="fa fa-refresh"></i>&nbsp;重置</a>
              </li>
            </ul>
          </div>
        </form>
      </div>
          <div class="btn-group-sm" id="toolbar" role="group">
        <div class="row">
          <div class="select-list">
            <ul style="padding-left: 17px;">
              <li>
                维度:
                <input type="checkbox" name="selectParam" value="1"
                     style="width: 50px;height: 20px;"/>数据类型
                <input type="checkbox" name="selectParam" value="2"
                     style="width: 50px;height: 20px;"/>数据来源
                <input type="checkbox" name="selectParam" value="3"
                     style="width: 50px;height: 20px;"/>流转部门
                <input type="checkbox" name="selectParam" value="4"
                     style="width: 50px;height: 20px;"/>考种
                <input type="checkbox" name="selectParam" value="5"
                     style="width: 50px;height: 20px;"/>班次
                <input type="checkbox" name="selectParam" value="6"
                     style="width: 50px;height: 20px;"/>员工
                <input type="checkbox" name="selectParam" value="7"
                     style="width: 50px;height: 20px;"/>时间粒度
              </li>
            </ul>
          </div>
        </div>
      </div>
      <div class="col-sm-12 select-table table-striped">
        <table id="bootstrap-table" data-mobile-responsive="true"></table>
      </div>
    </div>
  </div>
    <div th:include="include :: footer"></div>
    <script th:inline="javascript">
        var prefix = ctx + "project/accountFlowInfoRecordData";
    var columus = [
      {
        field : 'allotNums',
        title : '流转数量'
      },
      {
        field : 'dailyOrderNums',
        title : '当日成单人数'
      },
      {
        field : 'totalOrderNums',
        title : '累计成单人数'
      }];
    var channeltypes = [[${@dict.getType('flow_info_channel_type')}]];
    var shiftids = [[${@dict.getType('intendedShift')}]];
    $(function() {
      // 初始化时间范围插件，传入三个id的名称
      initDaterangepickerWithoutInitTime("accountTime","accountStartTime","accountEndTime");
      var options = {
        url: prefix + "/list",
        modalName: "流转记录统计",
        showRefresh: false,
        showSearch: false,
        showColumns: false,
        showToggle: false,
        columns: columus
      };
      $.table.init(options);
    });
    function mysearch() {
      //维度 搜索
      query();
    }
    function query() {
      //点击维度加载按钮则需销毁原有表格重新加载表格
      $("#bootstrap-table").bootstrapTable('destroy');
      var options = {
        id:"bootstrap-table",
        url: prefix + "/getAccountDataGroup",
        modalName: "流转记录统计",
        showSearch: false,
        showRefresh: false,
        showToggle: false,
        showColumns: false,
        queryParams: queryParams
      };
      //增加展示列
      var columns2 = [];
      var selectParam = "";
      $("input[name='selectParam']:checked").each(function () {
        selectParam = selectParam + $(this).val() + ",";
      });
      if (selectParam != "") {
        var one = selectParam.indexOf("1");
        var two = selectParam.indexOf("2");
        var three = selectParam.indexOf("3");
        var four = selectParam.indexOf("4");
        var five = selectParam.indexOf("5");
        var six = selectParam.indexOf("6");
        var seven = selectParam.indexOf("7");
        if (one >= 0) {
          // 1
          columns2.push({
            field : 'channelType',
            title : '数据类型',
            formatter: function(value, row, index) {
              return $.table.selectDictLabel(channeltypes,value);
            }
          });
        }
        if (two >= 0) {
          // 2
          columns2.push({
            field : 'createDeptName',
            title : '数据来源',
            formatter: function(value, row, index) {
              return value.substring(0,1)+"***"+value.substring(value.length-1);
            }
          });
        }
        if (three >= 0) {
          // 3
          columns2.push({
            field : 'flowDeptName',
            title : '流转部门',
            formatter: function(value, row, index) {
              return value.substring(0,1)+"***"+value.substring(value.length-1);
            }
          });
        }
        if (four >= 0) {
          // 4
          columns2.push({
            field : 'examTypeName',
            title : '考种',
            formatter: function(value, row, index) {
              return value.substring(0,1)+"***"+value.substring(value.length-1);
            }
          });
        }
        if (five >= 0) {
          // 5
          columns2.push({
            field : 'shiftId',
            title : '班次',
            formatter: function(value, row, index) {
              return $.table.selectDictLabel(shiftids,value);
            }
          });
        }
        if (six >= 0) {
          // 6
          columns2.push({
            field : 'userName',
            title : '员工',
            formatter: function(value, row, index) {
              return value.substring(0,1)+"***"+value.substring(value.length-1);
            }
          });
        }
        if (seven >= 0) {
          // 7
          columns2.push({
            field : 'accountTime',
            title : '时间粒度',
            formatter: function(value, row, index) {
              return $.common.dateFormat(value, "yyyy-MM-dd");
            }
          });
        }
        columns2 = columns2.concat(columus);
      }else {
        columns2 = columus;
      }
      options.columns=columns2;
      $.table.init(options);
    }
    function queryParams(params) {
      //获取复选框选中的值
      var selectParam = "";
      $("input[name='selectParam']:checked").each(function () {
        selectParam = selectParam + $(this).val() + ",";
      });
      var search = $.table.queryParams(params);
      search.selectParam = selectParam.toString();
      return search;
    }
    $("input:checkbox").change(function () {
      var selectParam = "";
      $("input[name='selectParam']:checked").each(function () {
        selectParam = selectParam + $(this).val() + ",";
      });
      query();
    });
    /**
     * 选择部门树
     */
    function ztreeShowDept() {
      // url 可选参数， 其他参数 请自定扩展
      // permission 权限 0.无权限 1.按照登录人数据权限
      // checkType 选中类型 0.多选 1.单选
      // showLevel 展示层级
      var url = ctx + "sys/deptTree?checkType=1&showLevel=4";
      var options = {
        title: '选择部门',
        width: "500",
        url: url,
        callBack: function (index,layero) {
          var body = layer.getChildFrame('body', index);
          $("#createDeptId").val(body.find('#ids').val());
          $("#createDeptName").val(body.find('#names').val());
          layer.close(index);
        }
      };
      $.modal.openOptionsDeptTree(options, $("#createDeptId").val());
    }
    /**
     * 选择部门树
     */
    function ztreeShowDept2() {
      // url 可选参数， 其他参数 请自定扩展
      // permission 权限 0.无权限 1.按照登录人数据权限
      // checkType 选中类型 0.多选 1.单选
      // showLevel 展示层级
      var url = ctx + "sys/deptTree?checkType=1&showLevel=4";
      var options = {
        title: '选择部门',
        width: "500",
        url: url,
        callBack: function (index,layero) {
          var body = layer.getChildFrame('body', index);
          $("#flowDeptId").val(body.find('#ids').val());
          $("#flowDeptName").val(body.find('#names').val());
          layer.close(index);
        }
      };
      $.modal.openOptionsDeptTree(options, $("#flowDeptId").val());
    }
    /**
     * 选择用户树
     */
    function ztreeShowUser() {
      // url 可选参数， 其他参数 请自定扩展
      // permission 权限 0.无权限 1.按照登录人数据权限
      // showType 展示方式 0.人员 1.人员+工号
      // checkType 选中类型 0.多选 1.单选
      // showLevel 展示层级
      var url = ctx + "sys/userDeptTree?showType=1&showLevel=3&checkType=0";
      var options = {
        title: '选择部门',
        width: "500",
        url: url,
        callBack: function (index,layero) {
          var body = layer.getChildFrame('body', index);
          $("#userId").val(body.find('#ids').val());
          $("#userName").val(body.find('#names').val());
          layer.close(index);
        }
      };
      $.modal.openOptionsUserTree(options, $("#userId").val());
    }
    //重置
    function reset() {
      $.form.reset();
      $("#accountTime").val('');
      $("#accountStartTime").val('');
      $("#accountEndTime").val('');
    }
    </script>
</body>
</html>

页面代码解析

页面核心函数query(),页面代码就说这么多，具体的可以查看源码，下面来看一下后端java代码

java代码

controllerk类AccountFlowInfoRecordDataController.java源码

package com.dongao.project.accountflowinforecorddata.controller;
import java.util.List;
import java.util.Map;
import com.dongao.project.examtype.domain.ExamType;
import com.dongao.project.examtype.service.IExamTypeService;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.*;
import com.ruoyi.framework.aspectj.lang.annotation.Log;
import com.ruoyi.framework.aspectj.lang.enums.BusinessType;
import com.dongao.project.accountflowinforecorddata.domain.AccountFlowInfoRecordData;
import com.dongao.project.accountflowinforecorddata.service.IAccountFlowInfoRecordDataService;
import com.ruoyi.framework.web.controller.BaseController;
import com.ruoyi.framework.web.page.TableDataInfo;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.common.utils.poi.ExcelUtil;
/**
 * 流转记录统计信息操作处理
 * 
 * @author dongao
 * @date 2022-07-01
 */
@Controller
@RequestMapping("/project/accountFlowInfoRecordData")
public class AccountFlowInfoRecordDataController extends BaseController
{
    private String prefix = "project/accountFlowInfoRecordData";
  @Autowired
  private IAccountFlowInfoRecordDataService accountFlowInfoRecordDataService;
  @Autowired
  private IExamTypeService examTypeService;
  @RequiresPermissions("project:accountFlowInfoRecordData:view")
  @GetMapping()
  public String accountFlowInfoRecordData(ModelMap mmap)
  {
    ExamType examType = new ExamType();
    List<ExamType> examTypes = examTypeService.selectExamTypeList(examType);
    mmap.put("examTypes",examTypes);
      return prefix + "/accountFlowInfoRecordData";
  }
  /**
   * 查询流转记录统计列表
   */
  @RequiresPermissions("project:accountFlowInfoRecordData:list")
  @PostMapping("/list")
  @ResponseBody
  public TableDataInfo list(@RequestParam Map<String,Object> params)
  {
    startPage();
        List<AccountFlowInfoRecordData> list =
        accountFlowInfoRecordDataService.selectAccountFlowInfoRecordDataListOther(params);
    return getDataTable(list);
  }
  /**
   * 分组查询流转记录统计列表
   */
  @RequiresPermissions("project:accountFlowInfoRecordData:list")
  @PostMapping("/getAccountDataGroup")
  @ResponseBody
  public TableDataInfo getAccountDataGroup(@RequestParam Map<String,Object> params)
  {
    startPage();
        List<AccountFlowInfoRecordData> list =
        accountFlowInfoRecordDataService.getAccountDataGroup(params);
    return getDataTable(list);
  }
}

后端java代码解析

业务逻辑实现类AccountFlowInfoRecordDataServiceImpl.java代码

package com.dongao.project.accountflowinforecorddata.service;
import com.dongao.project.accountflowinforecorddata.domain.AccountFlowInfoRecordData;
import com.dongao.project.accountflowinforecorddata.mapper.AccountFlowInfoRecordDataMapper;
import com.dongao.project.examtype.domain.ExamType;
import com.dongao.project.examtype.mapper.ExamTypeMapper;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.text.Convert;
import com.ruoyi.project.system.dept.domain.Dept;
import com.ruoyi.project.system.dept.mapper.DeptMapper;
import com.ruoyi.project.system.user.domain.User;
import com.ruoyi.project.system.user.mapper.UserMapper;
import org.apache.commons.collections.CollectionUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
import java.util.Objects;
/**
 * 流转记录统计 服务层实现
 * 
 * @author dongao
 * @date 2022-07-01
 */
@Service
public class AccountFlowInfoRecordDataServiceImpl implements IAccountFlowInfoRecordDataService 
{
  @Autowired
  private AccountFlowInfoRecordDataMapper accountFlowInfoRecordDataMapper;
  @Autowired
  private DeptMapper deptMapper;
  @Autowired
  private ExamTypeMapper examTypeMapper;
  @Autowired
  private UserMapper userMapper;
  /**
     * 查询流转记录统计列表
     * 
     * @param accountFlowInfoRecordData 流转记录统计信息
     * @return 流转记录统计集合
     */
  @Override
  public List<AccountFlowInfoRecordData> selectAccountFlowInfoRecordDataList(AccountFlowInfoRecordData accountFlowInfoRecordData)
  {
      return accountFlowInfoRecordDataMapper.selectAccountFlowInfoRecordDataList(accountFlowInfoRecordData);
  }
  /**
   * 查询数据
   * @param params
   * @return
   */
  @Override
  public List<AccountFlowInfoRecordData> selectAccountFlowInfoRecordDataListOther(Map<String,Object> params) {
    List<AccountFlowInfoRecordData> list =
        accountFlowInfoRecordDataMapper.selectAccountFlowInfoRecordDataListOther(params);
    return list;
  }
  /**
   * 分组查询流转记录统计列表
   * @param params
   * @return
   */
  @Override
  public List<AccountFlowInfoRecordData> getAccountDataGroup(Map<String,Object> params) {
    //分组参数
    String selectParam = (String) params.get("selectParam");
    if (StringUtils.isNotEmpty(selectParam)) {
      String groupby = "";
      String groupfield = "";
      if (selectParam.contains("1")) {
        groupby = groupby + "channel_type,";
        groupfield = groupfield + "channel_type channel_type,";
      }
      if (selectParam.contains("2")) {
        groupby = groupby + "create_dept_id,";
        groupfield = groupfield + "create_dept_id create_dept_id,";
      }
      if (selectParam.contains("3")) {
        groupby = groupby + "flow_dept_id,";
        groupfield = groupfield + "flow_dept_id flow_dept_id,";
      }
      if (selectParam.contains("4")) {
        groupby = groupby + "exam_type_id,";
        groupfield = groupfield + "exam_type_id exam_type_id,";
      }
      if (selectParam.contains("5")) {
        groupby = groupby + "shift_id,";
        groupfield = groupfield + "shift_id shift_id,";
      }
      if (selectParam.contains("6")) {
        groupby = groupby + "user_id,";
        groupfield = groupfield + "user_id user_id,";
      }
      if (selectParam.contains("7")) {
        groupby = groupby + "account_time";
        groupfield = groupfield + "account_time account_time,";
      }
      if (groupby.endsWith(",")) {
        groupby = groupby.substring(0, groupby.length() - 1);
      }
      params.put("groupby",groupby);
      //字段用
      groupfield = groupfield + "SUM(allot_nums) allot_nums,SUM(daily_order_nums) daily_order_nums,SUM(total_order_nums) total_order_nums ";
      params.put("groupfield",groupfield);
    }
    List<AccountFlowInfoRecordData> list = accountFlowInfoRecordDataMapper.selectAccountFlowInfoRecordDataListOther(params);
    if (CollectionUtils.isNotEmpty(list)) {
      // 1 数据类型-页面处理  3 流转部门 4 考种 5 班次--页面处理 6 员工 7 时间粒度
      for (AccountFlowInfoRecordData account : list) {
        //2 数据来源
        if (Objects.nonNull(account.getCreateDeptId())) {
          Dept dept = deptMapper.selectDeptById(account.getCreateDeptId());
          if (Objects.nonNull(dept)) {
            account.setCreateDeptName(dept.getDeptName());
          }
        }
        //3 流转部门
        if (Objects.nonNull(account.getFlowDeptId())) {
          Dept dept = deptMapper.selectDeptById(account.getFlowDeptId());
          if (Objects.nonNull(dept)) {
            account.setFlowDeptName(dept.getDeptName());
          }
        }
        //4 考种
        if (Objects.nonNull(account.getExamTypeId())) {
          ExamType examType = examTypeMapper.selectExamTypeById(account.getExamTypeId());
          if (Objects.nonNull(examType)) {
            account.setExamTypeName(examType.getExamName());
          }
        }
        //6 员工
        if (Objects.nonNull(account.getUserId())) {
          User user = userMapper.selectUserById(account.getUserId());
          if (Objects.nonNull(user)) {
            account.setUserName(user.getUserName());
          }
        }
      }
    }
    return list;
  }
}

XML代码AccountFlowInfoRecordDataMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dongao.project.accountflowinforecorddata.mapper.AccountFlowInfoRecordDataMapper">
    <resultMap type="AccountFlowInfoRecordData" id="AccountFlowInfoRecordDataResult">
        <result property="id"    column="id"    />
        <result property="accountTime"    column="account_time"    />
        <result property="userId"    column="user_id"    />
        <result property="deptId"    column="dept_id"    />
        <result property="channelType"    column="channel_type"    />
        <result property="createDeptId"    column="create_dept_id"    />
        <result property="flowDeptId"    column="flow_dept_id"    />
        <result property="examTypeId"    column="exam_type_id"    />
        <result property="shiftId"    column="shift_id"    />
        <result property="smallestUnit"    column="smallest_unit"    />
        <result property="allotNums"    column="allot_nums"    />
        <result property="dailyOrderNums"    column="daily_order_nums"    />
        <result property="totalOrderNums"    column="total_order_nums"    />
        <result property="createTime"    column="create_time"    />
        <result property="updateTime"    column="update_time"    />
    </resultMap>
    <sql id="selectAccountFlowInfoRecordDataVo">
        select id, account_time, user_id, dept_id, channel_type, create_dept_id, flow_dept_id, exam_type_id, shift_id, smallest_unit, allot_nums, daily_order_nums, total_order_nums, create_time, update_time from crm_account_flow_info_record_data
    </sql>
    <select id="selectAccountFlowInfoRecordDataList" parameterType="AccountFlowInfoRecordData" resultMap="AccountFlowInfoRecordDataResult">
        <include refid="selectAccountFlowInfoRecordDataVo"/>
        <where>
            <if test="id != null "> and id = #{id}</if>
            <if test="accountTime != null "> and account_time = #{accountTime}</if>
            <if test="userId != null "> and user_id = #{userId}</if>
            <if test="deptId != null "> and dept_id = #{deptId}</if>
            <if test="channelType != null "> and channel_type = #{channelType}</if>
            <if test="createDeptId != null "> and create_dept_id = #{createDeptId}</if>
            <if test="flowDeptId != null "> and flow_dept_id = #{flowDeptId}</if>
            <if test="examTypeId != null "> and exam_type_id = #{examTypeId}</if>
            <if test="shiftId != null "> and shift_id = #{shiftId}</if>
            <if test="smallestUnit != null  and smallestUnit != '' "> and smallest_unit = #{smallestUnit}</if>
            <if test="allotNums != null "> and allot_nums = #{allotNums}</if>
            <if test="dailyOrderNums != null "> and daily_order_nums = #{dailyOrderNums}</if>
            <if test="totalOrderNums != null "> and total_order_nums = #{totalOrderNums}</if>
            <if test="createTime != null "> and create_time = #{createTime}</if>
            <if test="updateTime != null "> and update_time = #{updateTime}</if>
        </where>
    </select>
    <select id="selectAccountFlowInfoRecordDataListOther" parameterType="Map"
            resultMap="AccountFlowInfoRecordDataResult">
        <choose>
            <when test="params.groupby != null and params.groupby != ''">
                select ${params.groupfield} from crm_account_flow_info_record_data
            </when>
            <otherwise>
                <include refid="selectAccountFlowInfoRecordDataVo"/>
            </otherwise>
        </choose>
        <where>
            <if test="params != null">
                <if test="params.channelType != null and params.channelType != ''"> and channel_type = #{params.channelType}</if>
                <if test="params.examTypeId != null and params.examTypeId != ''"> and exam_type_id = #{params.examTypeId}</if>
                <if test="params.shiftId != null and params.shiftId != ''"> and shift_id = #{params.shiftId}</if>
                <if test="params.userIds != null and params.userIds != '' and params.userIds.size() > 0">
                    AND user_id IN
                    <foreach collection="params.userIds" item="userId" open="(" close=")" separator=",">
                        #{userId}
                    </foreach>
                </if>
                <if test="params.flowDeptIds != null and params.flowDeptIds != '' and params.flowDeptIds.size() > 0">
                    AND flow_dept_id IN
                    <foreach collection="params.flowDeptIds" item="flowDeptId" open="(" close=")" separator=",">
                        #{flowDeptId}
                    </foreach>
                </if>
                <if
                        test="params.createDeptIds != null and params.createDeptIds != '' and params.createDeptIds.size() > 0">
                    AND create_dept_id IN
                    <foreach collection="params.createDeptIds" item="createDeptId" open="(" close=")" separator=",">
                        #{createDeptId}
                    </foreach>
                </if>
                <if test="params.accountStartTime != null and params.accountStartTime != ''" >
                    AND account_time &gt;= #{params.accountStartTime}
                </if>
                <if test="params.accountEndTime != null and params.accountEndTime != '' " >
                    AND account_time &lt;= #{params.accountEndTime}
                </if>
            </if>
        </where>
        <if test="params.groupby != null and params.groupby != ''">
            group by ${params.groupby}
        </if>
    </select>
</mapper>

xml代码解析，主要关注id为selectAccountFlowInfoRecordDataListOther的sql查询，这里用到了${},那么这里也顺便说一下#{} ${}的区别

#{} ${}的区别

#{}将传入的参数当成一个字符串，会给传入的参数加一个双引号

${}将传入的参数直接显示生成在sql中，不会添加引号

#{}能够很大程度上防止sql注入，${}无法防止sql注入

通过使用${}接收业务逻辑层处理动态传入的字段名动态生成分组查询sql，同时根据页面动态展示查询数据，到这里整个业务逻辑流程也就算完成了，实现的效果就和开始看到的效果一样了。

基于若依springboot架构实现数据多维统计

需求背景

代码实现

页面代码

java代码

#{} ${}的区别

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