Maven 导入第三方依赖

<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>
		<junit.version>4.12</junit.version>
		<spring.version>5.2.5.RELEASE</spring.version>
		<mybatis.version>3.5.4</mybatis.version>
		<mybatis.spring.version>2.0.4</mybatis.spring.version>
		<mysql.version>5.1.48</mysql.version>
		<commons-dbcp.version>2.7.0</commons-dbcp.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>${junit.version}</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>${mybatis.spring.version}</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>${mysql.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-dbcp2</artifactId>
			<version>${commons-dbcp.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis.generator</groupId>
			<artifactId>mybatis-generator-core</artifactId>
			<version>1.4.0</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		
		<!-- EL表达式的包 -->
		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
	</dependencies>

JSP中引入

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ page isELIgnored="false"%>
<!-- 使用EL表达式 -->
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>

if条件判断

<c:if test="${customer != null}">
			<div>
				<table>
					<tr>
						<td class="show_td">用户ID</td>
						<td class="show_td">用户名</td>
						<td class="show_td">JOBS</td>
						<td class="show_td">PHONE</td>
						<td class="show_td">Operator</td>
					</tr>
					<tr>
						<td class="show_td">${customer.id}</td>
						<td class="show_td">${customer.username}</td>
						<td class="show_td">${customer.jobs}</td>
						<td class="show_td">${customer.phone}</td>
						<td class="show_operator">
							<a href="toUpdateCustomer?id=${customer.id}">UPDATE</a>&nbsp;&nbsp;
							<a href="">DELETE</a>
						</td>
					</tr>
				</table>
			</div>
		</c:if>

在这里插入图片描述

for循环输出列表或数组

<c:if test="${customers != null }">
			
				<div>
					<table>
						<tr>
							<td class="show_td">选择</td>
							<td class="show_td">用户ID</td>
							<td class="show_td">用户名</td>
							<td class="show_td">JOBS</td>
							<td class="show_td">PHONE</td>
							<td class="show_td">Operator</td>
						</tr>
						
						<c:forEach items="${customers}" var="customer">
						
							<tr>
								<td class="show_td"><input name="ids" type="checkbox" value="${customer.id}"></td>
								<td class="show_td">${customer.id}</td>
								<td class="show_td">${customer.username}</td>
								<td class="show_td">${customer.jobs}</td>
								<td class="show_td">${customer.phone}</td>
								<td class="show_operator">
									<a href="toUpdateCustomer?id=${customer.id}">UPDATE</a>&nbsp;
									<a id="deleteCustomer" href="deleteCustomer?id=${customer.id}" onclick="return confirmDelete()">DELETE</a>
								</td>
							</tr>
						
						</c:forEach>
						
						<tr>
							<td colspan="3"  style="text-align: center;"><input type="button" id="deleteButton" value="删除选中项" onclick="deleteCustomers()" ></td>
							<td colspan="3"  style="text-align: center;"><input type="button" value="修改选中项" onclick="updateCustomers()" ></td>
						</tr>
						<tr>
							<td colspan="2"  style="text-align: center;"><a href="pageChange?changePage=-1">上一页</a></td>
							<td colspan="2" style="text-align: center;">${sessionScope.currentPage + 1}&nbsp;&nbsp;/&nbsp;&nbsp;${sessionScope.totalPage}</td>
							<td colspan="2"  style="text-align: center;"><a href="pageChange?changePage=1">下一页</a></td>
						</tr>
						
					</table>
					</form>
				</div>
			</c:if>