本文介绍了一个使用Spring+SpringMVC+MyBatis整合方案的实战项目。通过搭建环境、引入框架、实现CRUD操作，展示了如何构建一个完整的SSM项目，并使用了PageHelper进行分页处理。
这次暑假在腾讯课堂学习了尚硅谷SSM整合视频（SSM开发是目前企业流行使用的框架整合方案）免费教程，该视频讲解了 Spring + SpringMVC + MyBatis 整合实现了 CRUD (增删改查)。将代码整理，运行成功后，写下这篇博文记录一下。
1.创建 Maven 项目，配置 Maven
maven 项目的目录 
配置 maven 的 .m2（我的是 C:\Users\cjc.m2） 目录下的 settings.xml 文件
使用 使用阿里云的 maven 仓库 
指定 jdk 的版本
2.在 pom.xml 引入 jar 包
配置 pom.xml
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.atguigu</groupId>
<artifactId>ssm</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>ssm-crud Maven Webapp</name>
<url>http://maven.apache.org</url>
<!-- 引入项目依赖 jar 包 -->
<dependencies>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.0</version>
</dependency>
<!-- MBG -->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!-- Spring SpringMvc -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 返回 json 字符串的支持 -->
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.8</version>
</dependency>
<!-- 添加 file upload 组件，支持文件上传 -->
<!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<!-- JSR303 -->
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.1.Final</version>
</dependency>
<!-- Spring JDBC -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 导入单元测试模块 spring-test -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- Spring 面向切面编程 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- MyBatis -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.2</version>
</dependency>
<!-- MyBatis 整合 Spring 的适配包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 数据库连接池、驱动 -->
<!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<!-- jstl servlet-api junit-->
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>ssm-crud</finalName>
</build>
<properties>
<!-- 文件拷贝时的编码 -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- 编译时的编码 -->
<maven.compiler.encoding>UTF-8</maven.compiler.encoding>
</properties>
</project>
3.引入 Bootstrap, jQuery
4.配置 web.xml, SpringMVC, Spring
<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>ssm-crud</display-name>
<!-- 1、启动 Spring 的容器 -->
<!-- needed for ContextLoaderListener -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 2、springmvc 的前端控制器，拦截所以请求 -->
<!-- 写错了 diapatcher 会报 java.io.FileNotFoundException:
Could not open ServletContext resource [/WEB-INF/diapatcher-servlet.xml] -->
<!--
默认为 WEB-INF 下的[servlet-name]-servlet.xml
也可以使用 init-param 显式指定
<servlet>
<servlet-name>dispather</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/**.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispather</servlet-name>
<url-pattern>/**</url-pattern>
</servlet-mapping>
-->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 3.字符编码过滤器 -->
<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>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 4.使用 Rest 风格 的 URL -->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>HttpPutFormContentFilter</filter-name>
<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HttpPutFormContentFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
配置 SpringMVC dispatcher-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- xml必须在第一行，且不能有空格，不能重复写
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
因为 applicationContext 已经包含了-->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
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">
<!-- SpringMVC 的配置文件，包含网站跳转逻辑的控制， 配置 -->
<context:component-scan base-package="com.atguigu" use-default-filters="false">
<!-- 只扫描控制器 -->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- 配置视图解析器，方便页面返回-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 配置文件上传支持, 使用 apache common fileupload -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 上传文件大小上限，单位为字节（500MB） -->
<property name="maxUploadSize">
<value>5242880000</value>
</property>
<!-- 请求的编码格式，必须和jSP的pageEncoding属性一致，以便正确读取表单的内容，默认为ISO-8859-1 -->
<property name="defaultEncoding">
<value>UTF-8</value>
</property>
</bean>
<!-- 两个标准配置 -->
<!-- 将springmvc 不能处理的请求交给 tomcat -->
<mvc:default-servlet-handler />
<!-- 能支持 springmvc 更高级的一些功能 -->
<mvc:annotation-driven/>
</beans>
配置 Spring 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/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
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<context:component-scan base-package="com.atguigu">
<!-- 不扫描控制器 -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- Spring 的配置文件，这里主要配置和业务逻辑有关的 -->
<!-- 数据源、事务控制 -->
<context:property-placeholder location="classpath:dbconfig.properties" />
<bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
<property name="driverClass" value="${jdbc.driverClass}"></property>
<property name="user" value="${jdbc.user}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- 配置和 MyBatis 整合 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="dataSource" ref="pooledDataSource" />
<property name="mapperLocations" value="classpath:mapper/*.xml" />
</bean>
<!-- 配置扫描器，将mybatis 接口的实现加入到 IOC 容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.atguigu.crud.dao" />
</bean>
<!-- 配置一个可以批量操作的 sqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
<constructor-arg name="executorType" value="BATCH"></constructor-arg>
</bean>
<!-- 事务控制 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="pooledDataSource" />
</bean>
<!-- 开启基于注解的事务 -->
<aop:config>
<aop:pointcut expression="execution(* com.atguigu.crud.service..*(..))" id="txPoint"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
</aop:config>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="*" />
<tx:method name="get" read-only="true" />
</tx:attributes>
</tx:advice>
</beans>
5.MyBatis 逆向工程生成 mapper 和 xml 等文件，需要先创建两个表
DROP TABLE IF EXISTS `tbl_dept`;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `tbl_dept` (
`dept_id` int(11) NOT NULL AUTO_INCREMENT,
`dept_name` varchar(255) NOT NULL,
PRIMARY KEY (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
LOCK TABLES `tbl_dept` WRITE;
INSERT INTO `tbl_dept` VALUES (1,'开发部'),(2,'测试部');
/*!40000 ALTER TABLE `tbl_dept` ENABLE KEYS */;
UNLOCK TABLES;
DROP TABLE IF EXISTS `tbl_emp`;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `tbl_emp` (
`emp_id` int(11) NOT NULL AUTO_INCREMENT,
`emp_name` varchar(255) NOT NULL,
`gender` char(1) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`d_id` int(11) DEFAULT NULL,
PRIMARY KEY (`emp_id`),
KEY `fk_emp_dept` (`d_id`),
CONSTRAINT `fk_emp_dept` FOREIGN KEY (`d_id`) REFERENCES `tbl_dept` (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1012 DEFAULT CHARSET=utf8;
编译执行 MBGTest.java, 还有配置文件 mbg.xml, 可以得到 MyBatis 生成的 xml 和 mapper 文件。
6.项目的两个 controller，DepartmentController.java 和 EmployeeController.java 处理 list.jsp 的 ajax 请求。
package com.atguigu.crud.controller;
import java.util.List;
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.ResponseBody;
import com.atguigu.crud.bean.Department;
import com.atguigu.crud.bean.Msg;
import com.atguigu.crud.service.DepartmentService;
/**
* 处理有关部门请求
*
*
*/
@Controller
public class DepartmentController {
@Autowired
private DepartmentService departmentService;
/*
* 返回部门方法
* */
@RequestMapping("/depts")
@ResponseBody
public Msg getDepts() {
List<Department> list = departmentService.getDepts();
return Msg.success().add("depts", list);
}
}
package com.atguigu.crud.controller;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.Msg;
import com.atguigu.crud.service.EmployeeService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import net.sf.jsqlparser.statement.create.table.Index;
/**
* 处理员工请求
*
*
*/
@Controller
public class EmployeeController {
@Autowired
EmployeeService employeeService;
@ResponseBody
@RequestMapping(value="/emp/{ids}", method=RequestMethod.DELETE)
public Msg deleteEmpById(@PathVariable("ids")String ids) {
if(ids.contains("-")) {
List<Integer> del_ids = new ArrayList<>();
String[] str_ids = ids.split("-");
for(String string : str_ids) {
del_ids.add(Integer.parseInt(string));
}
employeeService.deleteBatch(del_ids);
} else {
Integer id = Integer.parseInt(ids);
employeeService.deleteEmp(id);
}
return Msg.success();
}
@ResponseBody
@RequestMapping(value="/emp/{empId}", method=RequestMethod.PUT)
public Msg saveEmp(Employee employee) {
System.out.println(employee);
employeeService.updateEmp(employee);
return Msg.success();
}
@RequestMapping(value="/emp/{id}", method=RequestMethod.GET)
@ResponseBody
public Msg getEmp(@PathVariable("id")Integer id) {
System.out.println(id);
Employee employee = employeeService.getEmp(id);
return Msg.success().add("emp", employee);
}
/*检查用户名是否可用*/
@ResponseBody
@RequestMapping("/checkuser")
public Msg checkuser(@RequestParam("empName")String empName) {
String regx = "(^[a-zA-Z0-9_-]{6,16}$)|(^[\u2E80-\u9FFF]{2,5})";
if(!empName.matches(regx)) {
return Msg.fail().add("va_msg", "用户名必须是 6-16 位数字和字母的组合或者2-5位中文");
}
boolean b = employeeService.checkUser(empName);
if(b) {
return Msg.success();
} else {
return Msg.fail().add("va_msg", "用户名不可用");
}
}
@RequestMapping(value="/emp", method=RequestMethod.POST)
@ResponseBody
public Msg saveEmp(@Valid Employee employee, BindingResult result) {
if(result.hasErrors()) {
//校验失败，返回失败
Map<String, Object> map = new HashMap<>();
List<FieldError> errors = result.getFieldErrors();
for(FieldError fieldError : errors) {
System.out.println(" 错误的字段名： " + fieldError.getField());
System.out.println(" 错误信息： " + fieldError.getDefaultMessage());
map.put(fieldError.getField(), fieldError.getDefaultMessage());
}
return Msg.fail().add("errorFields", map);
}else {
employeeService.saveEmp(employee);
return Msg.success();
}
}
/*
* @ResponseBody 需要导入包
* param pn
* 返回 json 数据
* */
@RequestMapping("/emps")
@ResponseBody
public Msg getEmpsWithJson(@RequestParam(value="pn", defaultValue="1")Integer pn,Model model) {
//这不是一个分页查询
// 引入 PageHelper
//在查询之前只需要调用,传入页码，以及每页的大小
PageHelper.startPage(pn, 5);
// startPage 后面紧跟的这个查询就是一个分页查询
List<Employee> emps = employeeService.getAll();
//使用 PageInfo 包装查询后的结果，只需要将 PageInfo 交给页面就行了
//封装了详细的分页信息，包含有我们查询出来的数据,传入连续显示的页数
PageInfo page = new PageInfo(emps, 5);
//model.addAttribute("pageInfo", page);
return Msg.success().add("pageInfo" , page);
}
/**
* 查询员工数据（分页查询）
* @return
*/
//@RequestMapping("/emps")
public String getEmps(@RequestParam(value="pn", defaultValue="1")Integer pn,Model model) {
//这不是一个分页查询
// 引入 PageHelper
//在查询之前只需要调用,传入页码，以及每页的大小
PageHelper.startPage(pn, 5);
// startPage 后面紧跟的这个查询就是一个分页查询
List<Employee> emps = employeeService.getAll();
//使用 PageInfo 包装查询后的结果，只需要将 PageInfo 交给页面就行了
//封装了详细的分页信息，包含有我们查询出来的数据,传入连续显示的页数
PageInfo page = new PageInfo(emps, 5);
model.addAttribute("pageInfo", page);
return "list";
}
}
7.页面的展示 list.jsp, ajax 请求返回 json 格式数据，前端 js 解析
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%-- <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> --%>
<%
pageContext.setAttribute("APP_PATH", request.getContextPath());
String path = request.getScheme() + "://" + request.getServerName()
+ ":" + request.getServerPort() + request.getContextPath()
+ "/";
System.out.println(path);
System.out.println("APP_PATH = " + pageContext.getAttribute("APP_PATH"));
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<!-- 写成这样会报错 <%@ taglib uri='http://java.sun.com/jsp/jstl/core' prefix='c'%> -->
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>员工列表</title>
<!-- 不以/开始的相对路径，找资源，以当前资源的路径为基准，容易出问题
以/开始的相对路径，找资源，以服务器的路径为标准（http://localhost:3306）,需要加上项目名称
http://localhost:3306/crud
-->
<!-- 引入 JQuery -->
<script type="text/javascript" src="${APP_PATH}/static/js/jquery-3.2.1.js"></script>
<!-- 引入 BootStrap css 样式-->
<link href="${APP_PATH}/static/bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">
<!-- 引入 JS -->
<script src="${APP_PATH}/static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
</head>
<body>
<!-- 员工添加模态框 -->
<!-- Modal -->
<div class="modal fade" id="empAddModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">员工添加</h4>
</div>
<div class="modal-body">
<form class="form-horizontal">
<div class="form-group">
<label class="col-sm-2 control-label">empName</label>
<div class="col-sm-10">
<input type="text" name="empName" class="form-control" id="empName_add_input" placeholder="empName">
<span class="help-block"></span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">email</label>
<div class="col-sm-10">
<input type="text" name="email" class="form-control" id="email_add_input" placeholder="email@atguigu.com">
<span class="help-block"></span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">gender</label>
<div class="col-sm-10">
<label class="radio-inline">
<input type="radio" name="gender" id="gender1_add_input" value="M" checked> 男
</label>
<label class="radio-inline">
<input type="radio" name="gender" id="gender2_add_input" value="F"> 女
</label>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">deptName</label>
<div class="col-sm-4">
<select class="form-control" name="dId" id="dept_add_select">
</select>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
<button type="button" class="btn btn-primary" id="emp_save_btn">保存</button>
</div>
</div>
</div>
</div>
<!-- 员工修改模态框 -->
<!-- Modal -->
<div class="modal fade" id="empUpdateModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title">员工修改</h4>
</div>
<div class="modal-body">
<form class="form-horizontal">
<div class="form-group">
<label class="col-sm-2 control-label">empName</label>
<div class="col-sm-10">
<p class="form-control-static" id="empName_update_static"></p>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">email</label>
<div class="col-sm-10">
<input type="text" name="email" class="form-control" id="email_update_input" placeholder="email@atguigu.com">
<span class="help-block"></span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">gender</label>
<div class="col-sm-10">
<label class="radio-inline">
<input type="radio" name="gender" id="gender1_update_input" value="M" checked> 男
</label>
<label class="radio-inline">
<input type="radio" name="gender" id="gender2_update_input" value="F"> 女
</label>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">deptName</label>
<div class="col-sm-4">
<select class="form-control" name="dId">
</select>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
<button type="button" class="btn btn-primary" id="emp_update_btn">修改</button>
</div>
</div>
</div>
</div>
<!-- 搭建显示页面 -->
<div class="container">
<!-- 标题 -->
<div class="row">
<div class="col-md-12">
<h1>SSM-CRUD</h1>
</div>
</div>
<!-- 按钮 -->
<div class="row">
<div class="col-md-4 col-md-offset-8">
<button type="button" class="btn btn-primary btn-sm" id="emp_add_modal_btn">新增</button>
<button type="button" class="btn btn-danger btn-sm" id="emp_delete_all_btn">删除</button>
</div>
</div>
<!-- 显示表格数据 -->
<div class="row">
<div class=col-md-12>
<table class="table table-hover" id="emps_table">
<thead>
<tr>
<th>
<input type="checkbox" id="check_all" />
</th>
<th>#</th>
<th>empName</th>
<th>gender</th>
<th>email</th>
<th>department</th>
<th>操作</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</div>
<!-- 显示分页信息栏 -->
<div class="row">
<!-- 分页文字信息 -->
<div id="page_info_area" class="col-md-6">
</div>
<!-- 分页条信息 -->
<div id="page_nav_area" class="col-md-6">
</div>
</div>
</div>
<script type="text/javascript">
var totalRecord, currentPage;
//1、页面加载完成以后，直接去发送一个 ajax 请求，要到分页数据,$表示页面加载完再执行这个函数
$(function(){
to_page(1);
});
function to_page(pn) {
$.ajax({
url:"${APP_PATH}/emps",
data:"pn="+pn,
type:"GET",
success:function(result){
//解析数据，显示数据
build_emps_table(result);
//显示分页信息
build_page_info(result);
//添加分页条
build_page_nav(result);
}
});
}
//显示员工信息
function build_emps_table(result) {
//清空数据
$("#emps_table tbody").empty();
var emps = result.extend.pageInfo.list;
$.each(emps, function(index, item) {
var checkBoxTd = $("<td><input type='checkbox' class='check_item'/></td>");
var empIdTd = $("<td></td>").append(item.empId);
var empNameTd = $("<td></td>").append(item.empName);
var genderTd = $("<td></td>").append(item.gender=='M'?'男':'女');
var emailTd = $("<td></td>").append(item.email);
var deptNameTd = $("<td></td>").append(item.department.deptName);
/*
<button type="button" class="">新增</button>
<button type="button" class="btn btn-danger btn-sm">删除</button>
<span class="" aria-hidden="true"></span>
*/
var editBtn = $("<button></button>").addClass("btn btn-primary btn-sm edit_btn").append($("<span></span>"))
.addClass("glyphicon glyphicon-pencil").append("编辑");
editBtn.attr("edit-id", item.empId);
var delBtn = $("<button></button>").addClass("btn btn-danger btn-sm delete_btn").append($("<span></span>"))
.addClass("glyphicon glyphicon-trash").append("删除");
delBtn.attr("del-id", item.empId);
var btnTd = $("<td></td>").append(editBtn).append(" ").append(delBtn);
$("<tr></tr>").append(checkBoxTd)
.append(empIdTd)
.append(empNameTd)
.append(genderTd)
.append(emailTd)
.append(deptNameTd)
.append(btnTd)
.appendTo("#emps_table tbody");
});
}
//显示分页信息
function build_page_info(result) {
//清空数据
$("#page_info_area").empty();
//alert("hello");
$("#page_info_area").append("当前 " +
result.extend.pageInfo.pageNum + " 页，总 " +
result.extend.pageInfo.pages + " 页，总 " +
result.extend.pageInfo.total + " 条记录");
totalRecord = result.extend.pageInfo.total;
currentPage = result.extend.pageInfo.pageNum;
}
//显示导航条
function build_page_nav(result) {
//清空数据
$("#page_nav_area").empty();
//page_nav_area
var ul = $("<ul></ul>").addClass("pagination");
var firstPageLi = $("<li></li>").append($("<a></a>").append("首页").attr("href","#"));
var prePageLi = $("<li></li>").append($("<a></a>").append("«"));
if(result.extend.pageInfo.hasPreviousPage == false) {
firstPageLi.addClass("disabled");
prePageLi.addClass("disabled");
} else {
//添加首页、前一页的点击
firstPageLi.click(function() {
to_page(1);
});
prePageLi.click(function() {
to_page(result.extend.pageInfo.pageNum - 1);
});
}
var nextPageLi = $("<li></li>").append($("<a></a>").append("»"));
var lastPageLi = $("<li></li>").append($("<a></a>").append("末页").attr("href","#"));
if(result.extend.pageInfo.hasNextPage == false) {
nextPageLi.addClass("disabled");
lastPageLi.addClass("disabled");
} else {
//添加末页、下一页的点击
nextPageLi.click(function() {
to_page(result.extend.pageInfo.pageNum + 1);
});
lastPageLi.click(function() {
to_page(result.extend.pageInfo.pages);
});
}
ul.append(firstPageLi).append(prePageLi);
$.each(result.extend.pageInfo.navigatepageNums,function(index, item){
var numLi = $("<li></li>").append($("<a></a>").append(item));
if(result.extend.pageInfo.pageNum == item) {
numLi.addClass("active");
}
numLi.click(function(){
to_page(item);
});
ul.append(numLi);
});
ul.append(nextPageLi).append(lastPageLi);
var navEle = $("<nav></nav>").append(ul);
navEle.appendTo("#page_nav_area");
}
function reset_form(ele) {
$(ele)[0].reset();
$(ele).find("*").removeClass("has-error");
$(ele).find(".help-block").text("");
}
$("#emp_add_modal_btn").click(function() {
reset_form("#empAddModal form");
//发送 ajax 请求， 查出部门信息，显示在下拉框中
getDepts("#empAddModal select");
//弹出模态框
$("#empAddModal").modal({
backdrop:"static"
});
});
//查出所有部门信息
function getDepts(ele) {
$(ele).empty();
$.ajax({
url:"${APP_PATH}/depts",
type:"GET",
success:function(result) {
//console.log(result);
//$("#dept_add_select")
//$("#empAddModal select").append("")
$.each(result.extend.depts,function() {
var optionEle = $("<option></option>").append(this.deptName).attr("value",this.deptId);
optionEle.appendTo(ele);
});
}
});
}
//校验表单数据
function validate_add_form() {
//拿到要校验的数据，使用正则表达式
var empName = $("#empName_add_input").val();
var regName = /(^[a-zA-Z0-9_-]{6,16}$)|(^[\u2E80-\u9FFF]{2,5})/;
if(!regName.test(empName)) {
show_validate_msg("#empName_add_input", "error", "用户名可以是 2-5 位中文或者6-16位英文和数字、-、_、的组合");
return false;
}else {
show_validate_msg("#empName_add_input", "success", "");
}
var email = $("#email_add_input").val();
var regEmail = /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/;
if(!regEmail.test(email)) {
//alert("邮箱格式不正确");
show_validate_msg("#email_add_input", "error", "邮箱格式不正确");
/* $("#email_add_input").parent().addClass("has-error");
$("#email_add_input").next("span").text("邮箱格式不正确"); */
return false;
} else {
show_validate_msg("#email_add_input", "success", "");
/* $("#email_add_input").parent().addClass("has-success");
$("#email_add_input").next("span").text(""); */
}
return true;
}
function show_validate_msg(ele, status, msg) {
//清除状态
$(ele).parent().removeClass("has-success has-error");
$(ele).next("span").text("");
if("success"==status) {
$(ele).parent().addClass("has-success");
$(ele).next("span").text(msg);
}else if("error"==status){
//alert("用户名可以是 2-5 位中文或者6-16位英文和数字、-、_、的组合");
$(ele).parent().addClass("has-error");
$(ele).next("span").text(msg);
}
}
$("#empName_add_input").change(function() {
var empName = this.value;
$.ajax({
url:"${APP_PATH}/checkuser",
data:"empName="+empName,
type:"POST",
success:function(result) {
if(result.code==100) {
show_validate_msg("#empName_add_input","success",
"用户名可用");
$("#emp_save_btn").attr("ajax-va", "success");
}else {
show_validate_msg("#empName_add_input","error",
result.extend.va_msg);
$("#emp_save_btn").attr("ajax-va", "error");
}
}
});
});
$("#emp_save_btn").click(function(){
/* if(!validate_add_form()) {
return false;
} */
if($(this).attr("ajax-va") == "error") {
return false;
}
//1、模态框中填写的表单数据提交给服务器
//2、发送 Ajax 请求保存员工
$.ajax({
url:"${APP_PATH}/emp",
type:"POST",
data:$("#empAddModal form").serialize(),
success:function(result) {
if(result.code == 100) {
//alert(result.msg);
//1. 关闭模态框
$("#empAddModal").modal("hide");
//2.来到最后一页
//发送 ajax 显示最后一页的数据
to_page(totalRecord);
} else {
//显示失败信息
//console.log(result);
//有哪个字段错误信息就返回哪一个
if(undefined != result.extend.errorFields.email) {
show_validate_msg("#email_add_input", "error", result.extend.errorFields.email);
}
if(undefined != result.extend.errorFields.empName) {
show_validate_msg("#empName_add_input", "error", result.extend.errorFields.empName);
}
}
}
});
});
//我们是按钮，
$(document).on("click", ".edit_btn",function() {
//alert("edit");
//弹出模态框
getDepts("#empUpdateModal select");
//alert($(this).attr("edit-id"));
getEmp($(this).attr("edit-id"));
//把员工 的 id 传递给模态框的更新按钮
$("#emp_update_btn").attr("edit-id",$(this).attr("edit-id"));
$("#empUpdateModal").modal({
backdrop:"static"
});
});
function getEmp(id) {
$.ajax({
url:"${APP_PATH}/emp/"+id,
type: "GET",
success: function(result) {
var empData = result.extend.emp;
$("#empName_update_static").text(empData.empName);
$("#email_update_input").val(empData.email);
$("#empUpdateModalinput[name=gender]").val([empData.gender]);
$("#empUpdateModal select").val([empData.dId]);
}
});
}
//点击更新，更新员工信息
$("#emp_update_btn").click(function() {
//验证邮箱
var email = $("#email_update_input").val();
var regEmail = /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/;
if(!regEmail.test(email)) {
show_validate_msg("#email_update_input", "error", "邮箱格式不正确");
return false;
} else {
show_validate_msg("#email_update_input", "success", "");
}
//发送 ajax 请求
$.ajax({
url:"${APP_PATH}/emp/" + $(this).attr("edit-id"),
type: "PUT",
data:$("#empUpdateModal form").serialize(),
success:function(result) {
//alert(result.msg);
$("#empUpdateModal").modal("hide");
to_page(currentPage);
}
});
});
//单个删除
$(document).on("click",".delete_btn", function(){
var empName = $(this).parents("tr").find("td:eq(2)").text();
var empId = $(this).attr("del-id");
if(confirm("确认删除【" + empName + "】吗?")) {
//确认，发送 Ajax
$.ajax({
url: "${APP_PATH}/emp/" + empId,
type: "DELETE",
success: function(result) {
alert(result.msg);
//回到本页
to_page(currentPage);
}
});
}
});
$("#check_all").click(function() {
$(".check_item").prop("checked", $(this).prop("checked"));
});
$(document).on("click",".check_item", function() {
var flag = $(".check_item:checked").length == $(".check_item").length;
$("#check_all").prop("checked", flag);
});
//点击全部删除，就批量删除
$("#emp_delete_all_btn").click(function() {
var empNames = "";
var del_idstr = "";
$.each($(".check_item:checked"), function() {
empNames += $(this).parents("tr").find("td:eq(2)").text() + ",";
del_idstr += $(this).parents("tr").find("td:eq(1)").text() + "-";
});
empNames = empNames.substring(0, empNames.length - 1);
del_idstr = del_idstr.substring(0, del_idstr.length - 1);
if(confirm("确认删除【" + empNames + "】吗?")) {
$.ajax({
url:"${APP_PATH}/emp/" + del_idstr,
type:"DELETE",
success:function(result) {
alert(result.msg);
to_page(currentPage);
}
});
}
});
</script>
</body>
</html>
8.运行效果图：
总结：这个视频教程还是非常不错的，项目从无到有，跟着视频一步一步敲代码，就可以做出同样的效果。【视频教程】。使用 maven 构建项目， SSM、 BootStrap、 jQuery、ajax、分页插件 PageHelper、JSR_303校验等框架和插件、技术。
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