SSM框架整合（超详细附带源码）
在学习完spring，springmvc，mybatis之后需要整合到一起，然后就可以开始找一个ssm+jsp项目，练练手了
1.各个工具的版本信息
MySQL版本：8.0.17 ，图像化工具：Navicat Premiun12
IDEA版本：2021.1.1 X64
JDK版本：17
tomcat版本：9
maven版本：3.6.3
这里不显示怎么创建maven的web-app工程和数据库的表（id,name,age），直接进入正题！！
2.在maven中导入相应的jar包
跟mybatis相关坐标:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.22</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
与spring相关的坐标：
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.13</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.3.13</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.3.13</version>
</dependency>
与spring mvc相关坐标：
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
与servlet及jsp相关坐标：
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
</dependency>
其他相关工具类
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.4</version>
</dependency>
3.搭建骨架
在resource资源目录下分别建立spring，springmvc，mybatis，jdbc和mapper文件的配置文件
效果如下：
具体代码如下：
jdbc.properties
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql:///day23?serverTimezone=UTC
jdbc.username=root
jdbc.password=123456
applicationContext.xml和spring-mvc的文件头
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
sqlMapConfig-spring.xml的文件头
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
UserMapper.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">
webapp下的WEB-INF文件中的web.xml
<?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_2_5.xsd" id="WebApp_ID" version="2.5">
jsp文件
效果如下：
如果你的web.xml文件是2.3版本及以前，那么当你使用JSTL或者EL表达式的时候，你需要在jsp页面的标签头加上 isELIgnored=“false”,否则JSTL或者EL表达式会失效（我这里是2.5版本）
具体代码：
pages文件下的userList：
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Titletitle>
head>
<body>
<h1>展示账户数据列表h1>
<table border="1px">
<tr>
<th>idth>
<th>名字th>
<th>年龄th>
tr>
<c:forEach items="${userList}" var="user">
<tr>
<td>${user.id}td>
<td>${user.name}td>
<td>${user.age}td>
tr>
c:forEach>
table>
body>
html>
webapp下的save：
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Titletitle>
head>
<body>
<h1>添加账户信息表单h1>
<form name="accountForm" action="${pageContext.request.contextPath}/user/save" method="post">
名字<input type="text" name="name"><br>
年龄<input type="text" name="age"><br>
<input type="submit" value="提交">
form>
body>
html>
java文件中的骨架结构：
效果如下：
具体代码：
domain包下User类：
public class User {
private int id;
private String name;
private int age;
//就不复制了，浪费地方，自己去自动生成
//构造方法
//setXxx()/getXxx()
//toString()
}
dao包下的UserDao
public interface UserDao {
//保存
public void save(User user);
//查找
public List<User> findAll();
}
service包下UserService
public interface UserService {
public void save(User user);
public List<User> findAll();
}
service包的impl包下的UserServiceImpl
@Service("userService")
public class UserServiceImpl implements UserService {
@Override
public void save(User user) {
}
@Override
public List<User> findAll() {
return 0;
}
}
controller包下UserController
@Controller
@RequestMapping("/user")
public class UserController {
}
4.对xml文件做具体配置
首先在applicationContext.xml配置
<context:component-scan base-package="com.dao"/>
<context:component-scan base-package="com.service"/>
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
bean>
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="druidDataSource"/>
<property name="configLocation" value="classpath:sqlMapConfig-spring.xml"/>
<property name="mapperLocations" value="classpath:com/mapper/*.xml"/>
bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.dao"/>
bean>
spring-mvc.xml:
<context:component-scan base-package="com.controller"/>
<mvc:annotation-driven>mvc:annotation-driven>
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
bean>
<mvc:default-servlet-handler>mvc:default-servlet-handler>
beans>
splMapConfig-spring.xml
<typeAliases>
<package name="com.domain"/>
typeAliases>
web.xml
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<servlet>
<servlet-name>dispatcherServletservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:spring-mvc.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>dispatcherServletservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<filter>
<filter-name>characterEncodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>utf-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>characterEncodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
具体业务实现
保存功能：
首先在save.jsp中写入一个简单的form表单,在action属性中配置${pageContext.request.contextPath}/user/save，然后找到controller包下的UserController中填写
@Autowired
private UserService userService;
@RequestMapping(value = "/save",produces = "text/html;charset=utf-8")
@ResponseBody
public String save(User user) {
userService.save(user);
return "保存成功";
}
然后在service包下的impl包下的UserServiceImpl填写：
@Autowired
private UserDao userDao;
@Override
public void save(User user) {
userDao.save(user);
}
然后在resources资源下的com包下的mapper包下的UserMapper.xml下填写
<mapper namespace="com.dao.UserDao">
<insert id="save" parameterType="user">
insert into user values(#{id},#{name},#{age})
insert>
1.这里我有个问题就是不知道namespace中填写的接口能否起别名，试了好像不行。
2.这里的parameterType="user"的user已经在sqlMapConfig-spring.xml文件起了别名
3.这里还有一个小坑我搞了半天才解决，如果你在java文件中给dao包起名叫mapper包和resources资源的UserMapper.xml的mapper包同名那么你在applicatonContext.xml文件可以不用写我标的红框
直接写下面这句就那能同时都扫描了（我写的是dao，你们改一下）
但是如果你跟我起的包名一样，一个是Dao包一个是Mapper包你就要在配置sessionFactory的bean中加上
最后在applicationContext.xml文件中配置事务控制
<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
<property name="dataSource" ref="druidDataSource"/>
bean>
<tx:advice id="txadvice">
<tx:attributes>
<tx:method name="*"/>
tx:attributes>
tx:advice>
<aop:config>
<aop:advisor advice-ref="txadvice" pointcut="execution(* com.service.impl.*.*(..))"/>
aop:config>
效果如下
在网页中搜索http://localhost/save.jsp出现
查找功能：
首先在userList.jsp中填写
注意:这里得写上 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>这句话否则下面的
<body>
<h1>展示账户数据列表h1>
<table border="1px">
<tr>
<th>idth>
<th>名字th>
<th>年龄th>
tr>
<c:forEach items="${userList}" var="user">
<tr>
<td>${user.id}td>
<td>${user.name}td>
<td>${user.age}td>
tr>
c:forEach>
table>
body>
然后在UserController中填写
@RequestMapping("/findAll")
public ModelAndView findAll(){
List<User> userList = userService.findAll();
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("userList",userList);
modelAndView.setViewName("userList");
return modelAndView;
}
然后在UserServiceImpl中填写
@Override
public List<User> findAll() {
return userDao.findAll();
}
最后在UserMapper.xml中填写
<select id="findAll" resultType="user">
select * from user
select>
效果如下：
网页搜索http://localhost/user/findAll
源码百度云盘链接 链接：
https://pan.baidu.com/s/1Zu7TQ8Wt4D04ozWcNwc3NA
提取码：zjfm
好了，SSM整合成功！！