大数据方向《JavaEE》项目案例【一定要收藏】
作者：互联网
一、项目的需求
- 点击全选/全不选，选中或者全部不选中
- 部门名称为下拉框，动态加载，金额在数量和单价输入后自动生成，非空验证姓名不能重复，年龄必须是数字， 否则不能提交，电影状态如果是未上映，后面有一个上映的选项。
- 添加成功，跳转到查询所有
- 如果没有选中一条数据，点击批量删除提示“至少选择一条数据”
- 选中多条数据或者全部选中，点击批量删除提示“确认删除吗”，如果确认就去后台删除，点击取消不删除批量删除后展示所有
- 搜索 对姓名，大于电影起始时间，小于结束时间， 部门 实现 搜索，分页不丢失数据
- 编辑点击编辑跳转到修改界面，回显成功， 点击提交修改成功
二、设计技术点：
基于SpringMVC + Spring + MyBatis + jQuery + JqueryEasyUI+ Mysql数据库完成查询、JQuery验证、分页等功能。
三.实现的效果
建表建库：
use q1;
create table dept8(
did int primary key ,
name varchar(20)
)
drop table emp8
create table emp8 (
eid int primary key auto_increment,
name varchar(20),
esex varchar(20),
eage int ,
eimgurl varchar(255),
ebirth date,
did int,
ehobby varchar(20),
shu int,
price int,
zong int,
flag int,
foreign key (did) references dept8 (did)
)
insert into dept8 (did, name)
values
(1,'产品部'),
(2,'客服部'),
(3,'市场部');
insert into emp8 (eid, name, esex, eage, eimgurl, ebirth, did, ehobby, shu, price, zong,flag)
values
(1,'张三','男',21,'','2020-10-10',1,'学习，看小说',20,2,null,1),
(2,'李四','男',21,'','2000-10-10',2,'学习，看小说',10,2,null,0),
(3,'王五','男',21,'','2010-10-10',3,'学习，运动',13,2,null,0),
(4,'赵六','女',21,'','2020-10-10',2,'学习，看小说',20,2,null,1),
(5,'周七','男',21,'','1980-10-10',1,'学习，看小说',60,2,null,0),
(6,'周七','男',21,'','1980-10-10',1,'学习，看小说',60,2,null,1);
select e.*, d.name dname from emp8 e,dept8 d where e.did=d.did ;
select* from emp8
select e.*, d.name dname from emp8 e,dept8 d where e.did=d.did group by d.did
打开开发工具：
搭建ssm环境以及配置
controller：代码：
package com.jiyun.ssm.controller;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.jiyun.ssm.pojo.De;
import com.jiyun.ssm.pojo.Em;
import com.jiyun.ssm.service.DeService;
import com.jiyun.ssm.service.EmService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestBody;
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.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.List;
@Controller
public class servlet {
@Autowired
private DeService d;
@Autowired
private EmService b;
//展示所有
@RequestMapping("/show")
public String show(Model mo, @RequestParam(value = "pageNum",required =false,defaultValue = "1")Integer pageNum) {
PageHelper.startPage (pageNum,2);
int qian=0;
int shu1=0;
List<Em> list = b.show ();
for (Em em : list) {
qian=em.getShu ()*em.getPrice ()+qian;
shu1=em.getShu ()+shu1;
}
mo.addAttribute ("qian",qian );
mo.addAttribute ("shu1",shu1 );
PageInfo<Em> p = new PageInfo<> (list);
mo.addAttribute ("p", p);
mo.addAttribute ("a1", "a1");
return "show";
}
//修改的回显
@RequestMapping("/xiu")
public String xiu(Model mo,Em s,String eid) {
Em a = b.getid(eid);
List<De> list = d.show ();
mo.addAttribute ("list", list);
mo.addAttribute ("a", a);
return "up";
}
//电影的状态
@RequestMapping("/xiu2")
public String xiu2(Model mo,Em s,String eid,String flag) {
b.getid1(eid,flag);
return "redirect:show";
}
//统计部门的个数
@RequestMapping("/ji")
public String ji(Model mo,Em s) {
List<Em> list = b.coun();
mo.addAttribute ("list", list);
return "fan";
}
//模糊查询
@RequestMapping("/like")
public String like(Model mo,String name,String start,String end,String esex,Integer did,@RequestParam(value ="pageNum",required = false,defaultValue = "1")Integer pageNum) {
PageHelper.startPage (pageNum,2);
List<Em> list = b.like(name,start,end,esex,did);
PageInfo<Em> p = new PageInfo<> (list);
List<De> list1 = d.show ();
mo.addAttribute ("p", p);
mo.addAttribute ("list1",list1);
mo.addAttribute ("a2", "a2");
return "show";
}
@RequestMapping("/like1")
public String like1(Model mo,String name,@RequestParam(value ="pageNum",required = false,defaultValue = "1")Integer pageNum) {
PageHelper.startPage (pageNum,2);
List<Em> list = b.like1(name);
PageInfo<Em> p = new PageInfo<> (list);
List<De> list1 = d.show ();
mo.addAttribute ("p", p);
mo.addAttribute ("list1",list1);
mo.addAttribute ("a2", "a2");
return "show";
}
//部门下拉框
@RequestMapping("/add")
public String add(Model mo) {
List<De> list = d.show ();
mo.addAttribute ("list",list);
return "add";
}
//ajax 验证
@RequestMapping("/aj")
@ResponseBody
public String aj(String name) {
long c=b.coiui(name);
if(c>0){
return "true";
}else {
return "false";
}
}
// 多选删除
@RequestMapping("/de")
public String de(Model mo,String ids) {
String[] id = ids.split (",");
b.shan(id);
return "redirect:show";
}
// 单选删除
@RequestMapping("/shan1")
public String shan1(Model mo,String eid) {
b.shan1(eid);
return "redirect:show";
}
// 添加图片
@RequestMapping("/add1")
public String add(Model mo, MultipartFile img, Em a, HttpServletRequest request) throws IOException {
if (img.getSize () > 0) {
String s = Arrays.toString (request.getParameterValues ("ehobby"));
a.setEhobby (s);
String filename = img.getOriginalFilename ();
String realPath = request.getSession ().getServletContext ().getRealPath ("/");
img.transferTo (new File (realPath, filename));
a.setEimgurl (filename);
}
b.add (a);
return "redirect:show";
}
// 修改回显后的添加
@RequestMapping("/set1")
public String set1(Model mo, MultipartFile img, Em a, HttpServletRequest request) throws IOException {
if (img.getSize () > 0) {
String filename = img.getOriginalFilename ();
String realPath = request.getSession ().getServletContext ().getRealPath ("/");
img.transferTo (new File (realPath, filename));
a.setEimgurl (filename);
}
b.set1 (a);
return "redirect:show";
}
}
servuce:
package com.jiyun.ssm.service;
import com.jiyun.ssm.pojo.Em;
import java.util.List;
public interface EmService {
List<Em> show();
void add (Em a);
void set1 (Em a);
void shan(String[] id);
List<Em> like(String name, String start, String end, String esex, Integer did);
long coiui(String name);
Em getid(String eid);
void shan1(String eid);
List<Em> coun();
void getid1(String eid, String flag);
List<Em> like1(String name);
}
package com.jiyun.ssm.service.Impl;
import com.jiyun.ssm.dao.EmDao;
import com.jiyun.ssm.pojo.Em;
import com.jiyun.ssm.service.EmService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class EmServiceIMpl implements EmService {
@Autowired
private EmDao b;
@Override
public List<Em> show() {
return b.show ();
}
@Override
public void add(Em a) {
b.add (a);
}
@Override
public void set1(Em a) {
b.set1 (a);
}
@Override
public void shan(String[] id) {
for (String eid : id) {
b.shan(eid);
}
}
@Override
public List<Em> like(String name, String start, String end, String esex, Integer did) {
return b.like(name,start,end,esex,did);
}
@Override
public long coiui(String name) {
return b.oui(name);
}
@Override
public Em getid(String eid) {
return b.get(eid);
}
@Override
public void shan1(String eid) {
b.shan12(eid);
}
@Override
public List<Em> coun() {
return b.ouyc();
}
@Override
public void getid1(String eid, String flag) {
b.getid(eid,flag);
}
@Override
public List<Em> like1(String name) {
return b.like1(name);
}
}
dao层接口：
package com.jiyun.ssm.dao;
import com.jiyun.ssm.pojo.Em;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import java.util.List;
public interface EmDao {
List<Em> show();
void add (Em a);
void set1 (Em a);
@Delete ("delete from emp8 where eid=#{eid}")
void shan(@Param ("eid") String eid);
List<Em> like(@Param ("name") String name,@Param ("start") String start,@Param ("end") String end, @Param ("esex")String esex, @Param ("did")Integer did);
@Select ("select count(*) from emp8 where name=#{name}")
long oui(@Param ("name") String name);
@Select ("select * from emp8 where eid=#{eid} ")
Em get(@Param ("eid") String eid);
@Delete ("delete from emp8 where eid=#{eid}")
void shan12(@Param ("eid") String eid);
@Select ("select d.name dname ,count(e.eid) count1 from emp8 e,dept8 d where e.did=d.did group by d.did")
List<Em> ouyc();
@Update (" update emp8 set flag=1 where eid=#{eid} ")
void getid( @Param ("eid") String eid, @Param ("flag")String flag);
List<Em> like1(@Param ("name") String name);
}
xml代码：
<?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">
<!--表示这个mapper中可以写那个接口中方法的sql语句-->
<mapper namespace="com.jiyun.ssm.dao.EmDao">
<!--id必须和接口中的某个方法名一样
resultType id属性对应的方法的返回值
-->
<select id="show" resultType="Em" >
select e.*,d.name dname from emp8 e,dept8 d where e.did=d.did
</select>
<select id="like1" resultType="Em" >
select e.*,d.name dname from emp8 e,dept8 d where e.did=d.did and e.name like '%${name}%'
</select>
<select id="like" resultType="Em" >
select e.*,d.name dname from emp8 e,dept8 d where e.did=d.did
<if test="name!=null and name!=''">
and e.name like '%${name}%'
</if>
<if test="start!=null and start!=''">
and e.ebirth >=#{start}
</if>
<if test="end!=null and end!=''">
and e.ebirth <=#{end}
</if>
<if test="esex!=null and esex!=''">
and e.esex = '${esex}'
</if>
<if test="did!=null">
and d.did=#{did}
</if>
</select>
<insert id="add" parameterType="Em">
insert into emp8 ( name, esex, eage, eimgurl, ebirth, did, ehobby, shu, price, zong ,flag)
values (#{name},#{esex},#{eage},#{eimgurl},#{ebirth},#{did},#{ehobby},#{shu},#{price},#{zong},#{flag})
</insert>
<update id="set1" parameterType="Em">
update emp8 set name= #{name}, esex=#{esex}, eage=#{eage}, eimgurl=#{eimgurl}, ebirth=#{ebirth},
did=#{did}, ehobby=#{ehobby}, shu=#{shu}, price=#{price}, zong=#{zong},flag=#{flag} where eid=#{eid}
</update>
</mapper>前端展示所有：
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2021/9/18
Time: 21:58
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>Title</title>
<script src="/js/jquery-1.9.1.min.js"></script>
<script>
<%--多选删除--%>
$(function () {
$(".e").click(function () {
if($(".q:checked").length<1){
alert("至少选中一条")
}else {
var str="";
$(".q:checked").each(function () {
var id=$(this).val();
str+=id+","
})
if(confirm('是否删除？')){
location.href=("/de?ids"+str)
}
}
})
})
</script>
</head>
<h1 align="center" ><font color="aqua">综合案例</font></h1>
<body>
<hr color="red">
<form action="/like" method="post" placeholder="根据名字查询">
姓名 <input type="text" name="name">
电影开始时间：<input type="text" name="start" placeholder="yyyy-MM-dd">
电影结束时间<input type="text" name="end" placeholder="yyyy-MM-dd">
<%--<input type="text" name="esex">--%>
性别 <select name="esex">
<option value="">-请选择--</option>
<option value="男">男</option>
<option value="女">女</option>
</select>
<select name="did">
<option value="">-请选择--</option>
<c:forEach var="y" items="${list1}">
<option value="${y.did}">${y.name}</option>
</c:forEach>
</select>
<input type="submit" value="搜索">
</form>
<hr color="red">
<form action="/like1" method="post">
<input type="text" name="name" placeholder="根据名字查询">
<input type="submit" value="搜索">
</form>
<hr color="bule">
<input type="button" value="删除" class="e">
<input type="button" value="统计" onclick="e3()">
<input type="button" value="增加" onclick="w2()">
总金额为：${qian} 总票数：${shu1}
<table cellpadding="0" border="1" width="800" height="300">
<tr>
<td><input type="checkbox" onclick="fan(this)"></td>
<td>编号</td>
<td>姓名</td>
<td>性别</td>
<td>年龄</td>
<td>头像</td>
<td>生日</td>
<td>部门</td>
<td>爱好</td>
<td>票数</td>
<td>单价</td>
<td>总价</td>
<td>状态</td>
<td>操作</td>
</tr>
<c:forEach items="${p.list}" var="a">
<tr>
<td><input type="checkbox" class="q" value="${a.eid}"></td>
<td>${a.eid}</td>
<td>${a.name}</td>
<td>${a.esex}</td>
<td>${a.eage}</td>
<td><img src="/${a.eimgurl}" alt="" width="50" height="50"></td>
<td><fmt:formatDate value="${a.ebirth}" pattern="yyyy-MM-dd"/> </td>
<td>${a.dname}</td>
<td>${a.ehobby}</td>
<td>${a.shu}</td>
<td>${a.price}</td>
<td>${a.shu*a.price}</td>
<td>
<c:if test="${a.flag==0}">
未上映
</c:if>
<c:if test="${a.flag==1}">
已上映
</c:if>
</td>
<td>
<c:if test="${a.flag==0}">
<a href="/xiu2?eid=${a.eid}&flag=1">已上映</a>
</c:if>
<a href="/xiu?eid=${a.eid}">修改</a>
<a href="/shan1?eid=${a.eid}">删除</a></td>
</tr>
</c:forEach>
</table>
<%--查询所有--%>
<c:if test="${a1=='a1'}">
<a href="/show?pageNum=${p.firstPage}">首页</a>
<c:if test="${p.isFirstPage==false}">
<a href="${pageContext.request.contextPath}/show?pageNum=${p.prePage}">上一页</a>
</c:if>
<c:forEach items="${p.navigatepageNums}" var="i">
<c:choose>
<c:when test="${p.pageNum==i}">
<span style="color: red;">${i}</span>
</c:when>
<c:otherwise>
<a href="${pageContext.request.contextPath}/show?pageNum=${i}">${i}</a>
</c:otherwise>
</c:choose>
</c:forEach>
<c:if test="${p.isLastPage==false}">
<a href="${pageContext.request.contextPath}/show?pageNum=${p.nextPage}">下一页</a>
</c:if>
<a href="${pageContext.request.contextPath}/show?pageNum=${p.lastPage}">尾页</a>
第${p.pageNum}页/共${p.lastPage}页 共${p.total}条
</c:if>
<%--模糊查询--%>
<c:if test="${a2=='a2'}">
<a href="/like?pageNum=${p.firstPage}">首页</a>
<c:if test="${p.isFirstPage==false}">
<a href="${pageContext.request.contextPath}/like?pageNum=${p.prePage}">上一页</a>
</c:if>
<c:forEach items="${p.navigatepageNums}" var="i">
<c:choose>
<c:when test="${p.pageNum==i}">
<span style="color: red;">${i}</span>
</c:when>
<c:otherwise>
<a href="${pageContext.request.contextPath}/like?pageNum=${i}">${i}</a>
</c:otherwise>
</c:choose>
</c:forEach>
<c:if test="${p.isLastPage==false}">
<a href="${pageContext.request.contextPath}/like?pageNum=${p.nextPage}">下一页</a>
</c:if>
<a href="${pageContext.request.contextPath}/like?pageNum=${p.lastPage}">尾页</a>
第${p.pageNum}页/共${p.lastPage}页 共${p.total}条
</c:if>
</body>
<script>
<%--统计--%>
function e3() {
location.href="/ji"
}
//全选全不选
function fan(w) {
$(".q").prop("checked",w.checked)
}
//增加
function w2() {
location.href="/add"
}
</script>
</html>
add的添加：
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2021/9/18
Time: 22:16
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>Title</title>
<script src="/js/jquery-1.9.1.min.js"></script>
<script>
</script>
</head>
<body>
<form action="/add1" method="post" enctype="multipart/form-data" onsubmit="return go()">
姓名 <input type="text" name="name" class="e" onblur="w2()"><span class="t"></span> <br>
性别 <input type="radio" name="esex" value="男"> 男
<input type="radio" name="esex" value="女">女 <br>
年龄 <input type="text" name="eage" class="h" onblur="w10()" > <span class="z"></span><br>
头像 <input type="file" name="img"> <br>
生日 <input type="text" name="ebirth"> <br>
部门
<select name="did">
<option>-请选择--</option>
<c:forEach var="y" items="${list}">
<option value="${y.did}">${y.name}</option>
</c:forEach>
</select> <br>
爱好
<input type="checkbox" name="ehobby" value="学习"> 学习
<input type="checkbox" name="ehobby" value="看电影"> 看电影
<input type="checkbox" name="ehobby" value="运动"> 运动
<input type="checkbox" name="ehobby" value="看小说"> 看小说
<br>
票数 <input type="text" name="shu" id="e5"> <br>
单价 <input type="text" name="price" id="e6" onblur="w9()"> <br>
总价 <input type="text" name="zong" id="e7"> <br>
<input type="radio" name="flag" value="0"> 未上映
<input type="radio" name="flag" value="1"> 已上映 <br>
<input type="submit" value="增加"> <br>
</form>
</body>
<script>
var f=false;
function w10() {
var d=$(".h").val();
var rep=/^[0-9]*$/;
if(rep.test(d)){
$(".z").html("")
}else {
$(".z").html("必须为数字")
$(".z").css("color","red");
f=true
}
}
function w2() {
var n=$(".e").val();
if(n==""|| n==null){
$(".t").html("名字不能为空");
$(".t").css("color","red");
f=true;
}else {
$.post("aj",{"name":n},function (data) {
if(data=="true"){
$(".t").html("名字不能重复");
$(".t").css("color","red");
f=true;
}else {
$(".t").html("名字可用");
$(".t").css("color","red");
f=false;
}
},"text")
}
}
function go() {
if(f==true){
return false;
} else {
return true;
}
}
function w9() {
var e5=$("#e5").val();
var e6=$("#e6").val();
$("#e7").val(e5*e6);
}
</script>
</html>
修改的回显
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2021/9/18
Time: 22:16
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>Title</title>
<script src="/js/jquery-1.9.1.min.js"></script>
<script>
</script>
</head>
<body>
<form action="/set1" method="post" enctype="multipart/form-data" onsubmit="return go()">
<input type="hidden" name="eid" value="${a.eid}">
姓名 <input type="text" name="name" value="${a.name}" class="e" onblur="w2()"><span class="t"></span> <br>
性别 <input type="radio" name="esex" value="男" <c:if test="${a.esex=='男'}">checked</c:if>> 男
<input type="radio" name="esex" value="女" <c:if test="${a.esex=='女'}">checked</c:if>>女 <br>
年龄 <input type="text" name="eage" value="${a.eage}" class="h" onblur="w10()" > <span class="z"></span><br>
头像 <input type="hidden" name="eimgurl" value="${a.eimgurl}"> <br>
<img src="/${a.eimgurl}" alt="" width="50" height="50"> <br>
头像 <input type="file" name="img" > <br>
生日 <input type="text" name="ebirth" value="<fmt:formatDate value='${a.ebirth}' pattern='yyyy-MM-dd'/> "> <br>
部门
<select name="did">
<option>-请选择--</option>
<c:forEach var="y" items="${list}">
<option value="${y.did}"<c:if test="${a.did==y.did}">selected</c:if>>${y.name}</option>
</c:forEach>
</select> <br>
爱好
<input type="checkbox" name="ehobby" value="学习"
<c:if test="${fn:contains(a.ehobby, '学习')}">checked</c:if>
> 学习
<input type="checkbox" name="ehobby" value="看电影"
<c:if test="${fn:contains(a.ehobby, '看电影')}">checked</c:if>
> 看电影
<input type="checkbox" name="ehobby" value="运动"
<c:if test="${fn:contains(a.ehobby, '运动')}">checked</c:if>
> 运动
<input type="checkbox" name="ehobby" value="看小说"
<c:if test="${fn:contains(a.ehobby, '看小说')}">checked</c:if>
> 看小说
<br>
票数 <input type="text" name="shu" id="e5" value="${a.shu}"> <br>
单价 <input type="text" name="price" id="e6" value="${a.price}" onblur="w9()"> <br>
总价 <input type="text" name="zong" id="e7" value="${a.zong}"> <br>
<input type="radio" name="flag" value="0" <c:if test="${a.flag==0}">checked</c:if>> 未上映
<input type="radio" name="flag" value="1"<c:if test="${a.flag==1}">checked</c:if>> 已上映 <br>
<input type="submit" value="增加"> <br>
</form>
</body>
<script>
var f=false;
function w10() {
var d=$(".h").val();
var rep=/^[0-9]*$/;
if(rep.test(d)){
$(".z").html("")
}else {
$(".z").html("必须为数字")
$(".z").css("color","red");
f=true
}
}
function w2() {
var n=$(".e").val();
if(n==""|| n==null){
$(".t").html("名字不能为空");
$(".t").css("color","red");
f=true;
}else {
$.post("aj",{"name":n},function (data) {
if(data=="true"){
$(".t").html("名字不能重复");
$(".t").css("color","red");
f=true;
}else {
$(".t").html("名字可用");
$(".t").css("color","red");
f=false;
}
},"text")
}
}
function go() {
if(f==true){
return false;
} else {
return true;
}
}
function w9() {
var e5=$("#e5").val();
var e6=$("#e6").val();
$("#e7").val(e5*e6);
}
</script>
</html>
统计：
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2021/9/19
Time: 0:14
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>Title</title>
<script>
</script>
</head>
<body>
<table cellpadding="0" border="1" width="600" height="300">
<tr>
<td>部门</td>
<td>个数</td>
</tr>
<c:forEach items="${list}" var="a">
<tr>
<td>${a.dname}</td>
<td>${a.count1}</td>
</tr>
</c:forEach>
</table>
</body>
<script>
</script>
</html>
增加效果：
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标签：String,did,JavaEE,收藏,案例,eid,import,public,name 来源： https://blog.csdn.net/m0_59239420/article/details/120402213