Maven整合ssm框架
1 pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.itheima</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<!--
ssm整合步骤：
第一步：mybatis单独测试
1.引入mybatis,mysql依赖
2.创建实体和dao层。注意：dao层只有接口。
3.创建dao层与之对象的mapper.xml配置文件
4.创建mybatis的核心配置文件。
5.通过api执行mybatis
5.1 获取mybatis核心配置的io流对象
5.2 创建SqlSessionFactory对象
5.3 创建sqlSession对象
5.4 创建dao层的代理对象。
第二步： mybatis和spring进行整合
整合的思想：使用spring的ioc的思想来管理mybatis中的对象。
1.引入spring的ioc相关的依赖，还需要引入 spring和mybatis整合的工具包(依赖版本是1.3.0) mybatis-spring
还要包含 阿里巴巴的连接池，spring-jdbc,
2.创建spring的配置文件，
3.在spring的配置中创建SqlSessionFactory对象。创建数据源对象
4.在mybatis中删除数据源相关的配置。
5.采用包扫描的方式创建mapper对象
第三步：单独测试springMVC
1.引入springMVC的依赖 spring-webmvc
2.在web.xml中配置前端控制器DispatcherServlet
配置乱码过滤器
3.创建springMVC.xml配置，配置注解扫描，注解驱动，视图解析器
4.编写controller
第四步：spring和springmvc整合
整合的要点：就是让springmvc从servletContext中获取spring容器即可
1.在web.xml中配置spring的监听器即可。
-->
<build>
<plugins>
<!-- java编译插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!--mysql依赖-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<!--mybatis依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!--junit测试依赖-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- spring的ioc相关-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
<!-- mybatis-spring整合的工具包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- spring整合junit测试-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
<!-- 德鲁伊连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.9</version>
</dependency>
<!-- spring的jdbc依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
<!--mvc依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
<!-- servlet依赖-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<!-- jstl依赖-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--aop相关-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</dependency>
</dependencies>
</project>2 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<!-- 前端控制器-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springmvc.xml的位置-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc/springMVC.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 乱码过滤器-->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 编码格式-->
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- spring的监听器-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>3 jdbc.properties
jdbc.username=root
jdbc.password=root
jdbc.url=jdbc:mysql://localhost:3306/spring_day01
jdbc.driverClass=com.mysql.jdbc.Driver4 springMVC.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="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
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 注解扫描-->
<context:component-scan base-package="com.itheima.controller"></context:component-scan>
<!-- 注解驱动-->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- 视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 释放自静态资源-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>
</beans>5 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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.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">
<!-- bean definitions here -->
<!-- 引入外部配置 -->
<context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
<!-- 创建数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="driverClassName" value="${jdbc.driverClass}"></property>
</bean>
<!-- 开启包扫描-->
<context:component-scan base-package="com.itheima">
<!-- 排除springmvc创建的controller注解-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
</context:component-scan>
</beans>6 applicationContext-mybatis.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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- bean definitions here -->
<!--
思考一个问题：
此处的sqlSessionFactory的对象的创建属于我们spring中已经学习的3种方式的哪一种？
1.默认无参构造
2.工厂类的静态方法
3.工厂类的动态方法
4.FactoryBean方式。
如果一个类实现了spring的FactoryBean接口，那么spring就会调用这个接口的
getObject()方法来创建对象。
-->
<!--
创建sqlSessionFactory对象
-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--配置mybatis核心配置文件的位置-->
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
<property name="dataSource" ref="dataSource"></property>
<!-- 别名映射，mybatis中就不需要配置了-->
<property name="typeAliasesPackage" value="com.itheima.domain"></property>
<!-- 配置mapper映射文件的位置，mybaits中就不需要配置了 -->
<property name="mapperLocations" value="classpath:mybatis/mappers/*.xml"></property>
</bean>
<!-- spring管理单个mapper对象-->
<!--<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">-->
<!--<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>-->
<!--<property name="mapperInterface" value="com.itheima.mapper.UserMapper"></property>-->
<!--</bean>-->
<!-- spring通过包扫描的方式，管理所有的mapper对象 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.itheima.mapper"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
</beans>7 applicationContext-tx.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:tx="http://www.springframework.org/schema/tx"
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">
<!-- bean definitions here -->
<!--
xml版本 spring配置事务
1.创建一个事务管理器对象
2.配置事务的策略
3.配置事务的aop
-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--
<!--配置一个通知(增强)-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!--配置哪些方法需要被增强, 设置隔离级别 传播行为 是否只读 超时时间
name="transfer*" 设置要事务管理进行增强的方法
isolation="REPEATABLE_READ" 设置隔离级别
propagation="REQUIRED" 设置传播行为
read-only="false" 设置是否为只读事务
timeout="-1" 超时时间为-1 不超时
-->
<tx:method name="transfer*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" timeout="-1" />
</tx:attributes>
</tx:advice>
<!--配置aop-->
<aop:config>
<!--配置切点-->
<aop:pointcut id="pointcut" expression="execution(* com.itheima.service..transfer*(..))"/>
<!--切点和增强的组合-->
<aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
</aop:config>-->
<!--
注解方式
1.开启注解事务
2.在类名上添加@Transactional注解即可
-->
<tx:annotation-driven></tx:annotation-driven>
</beans>8 mybatis-config.xml
<?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>
<!-- 引入外部配置 -->
<!--<properties resource="jdbc.properties"></properties>-->
<settings>
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!-- 别名映射,交给spring管理，所以注释掉-->
<!-- <typeAliases>
<package name="com.itheima.domain"></package>
</typeAliases>-->
<!-- 数据源交给spring管理-->
<!--<environments default="development">-->
<!--<environment id="development">-->
<!--<transactionManager type="JDBC"/>-->
<!--<dataSource type="POOLED">-->
<!--<property name="driver" value="${jdbc.driverClass}"/>-->
<!--<property name="url" value="${jdbc.url}"/>-->
<!--<property name="username" value="${jdbc.username}"/>-->
<!--<property name="password" value="${jdbc.password}"/>-->
<!--</dataSource>-->
<!--</environment>-->
<!--</environments>-->
<!-- 交给spring管理-->
<!-- <mappers>
<mapper resource="UserMapper.xml"/>
</mappers>-->
</configuration>9 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">
<!--
mapper标签:配置各类声明
namespace：名称空间，由于映射文件可能有多个，为了防止crud语句的唯一标识被重复，需要设置空间名称。
-->
<mapper namespace="com.itheima.mapper.UserMapper">
<!--
select:查询的statement（声明），用来编写查询语句
id:语句的唯一标识
resultType：配置返回的结果集类型
parameterType：传递的参数类型，可以省略
-->
<select id="findAllUsers" resultType="User">
select * from tb_user
</select>
<insert id="save">
insert into tb_user(name,password) values(#{name},#{password})
</insert>
<delete id="deleteUserById">
delete from tb_user where id = #{id}
</delete>
</mapper>10 contoller
package com.itheima.controller;
import com.itheima.domain.User;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import java.util.List;
@Controller
@RequestMapping("/user")
public class UserController {
/**
* 此时注入不进来的原因是因为springmvc拿不到spring容器。
*
* 所以spring和springmvc的整合核心是：
* 只需要让springmvc拿到spring的容器即可。
*
* 所以将spring容器放到servletContext域中，springmvc从servletContext域中获取spring容器
*
* 说白了，我们只要配置spring的监听器，让spring介入到web工程中，那么就能实现spring和springmvc的整合了
*
*/
@Autowired
private UserService userService;
@RequestMapping("/findAllUsers")
public String findAllUsers(Model model){
List<User> userList = userService.findAllUsers();
//保存数据
model.addAttribute("userList",userList);
return "users";
}
@RequestMapping("/addTwoUsers")
public String addTwoUsers(){
userService.addTwoUsers();
return "redirect:/user/findAllUsers";
}
@RequestMapping("/deleteUserById")
public String deleteUserById(String id){
userService.deleteUserById(id);
return "redirect:/user/findAllUsers";
}
}11 User
package com.itheima.domain;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.Date;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
private Long id;
// 用户名
private String userName;
// 密码
private String password;
// 姓名
private String name;
// 年龄
private Integer age;
// 性别，1男性，2女性
private Integer sex;
// 出生日期
private Date birthday;
// 创建时间
private Date created;
// 更新时间
private Date updated;
}12 UserMapper
package com.itheima.mapper;
import com.itheima.domain.User;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface UserMapper {
public List<User> findAllUsers();
void save(User user);
void deleteUserById(@Param("id") String id);
}13 UserService
package com.itheima.service;
import com.itheima.domain.User;
import java.util.List;
public interface UserService {
public List<User> findAllUsers();
void addTwoUsers();
void deleteUserById(String id);
}package com.itheima.service.impl;
import com.itheima.domain.User;
import com.itheima.mapper.UserMapper;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@Service("userService")
@Transactional
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> findAllUsers() {
List<User> userList = userMapper.findAllUsers();
return userList;
}
@Override
public void addTwoUsers() {
User user = new User();
user.setPassword("19951001");
user.setName("沈腾");
User user2 = new User();
user2.setPassword("199510012");
user2.setName("沈腾2");
userMapper.save(user);
int i = 1/0;
userMapper.save(user2);
}
@Override
public void deleteUserById(String id) {
userMapper.deleteUserById(id);
}
}14 utils
package com.itheima.utils;
import com.itheima.mapper.UserMapper;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MapperUtils {
private SqlSessionFactory sqlSessionFactory;
private Class calzz;
public Object getMapper(){
//3.通过sqlSessionFactory创建sqlSession
SqlSession sqlSession = sqlSessionFactory.openSession(true);
//4.通过sqlSession获取Mapper对象
Object mapper = sqlSession.getMapper(calzz);
return mapper;
}
// 一步到位创建所有的mapper对象
public Map<String,Object> getAllMappers(){
//获取所有mapper的字节码文件
List<Class> classList = new ArrayList<>();
for(Class clazz:classList){
//3.通过sqlSessionFactory创建sqlSession
SqlSession sqlSession = sqlSessionFactory.openSession(true);
//4.通过sqlSession获取Mapper对象
Object mapper = sqlSession.getMapper(calzz);
}
return new HashMap<>();
}
}15 user.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="f" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%--
Created by IntelliJ IDEA.
User: zhang
Date: 2018/7/25
Time: 20:53
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
<link rel="stylesheet" rel="stylesheet" href="/js/user.css"/>
</head>
<body>
<!-- Table goes in the document BODY -->
<table class="altrowstable" id="alternatecolor">
<tr>
<th>用户编号</th>
<th>用户名</th>
<th>真实姓名</th>
<th>年龄</th>
<th>性别</th>
<th>出生日期</th>
<th>创建日期</th>
<th>更新日期</th>
<th>删除操作</th>
</tr>
<c:forEach items="${userList}" var="user">
<tr>
<td>${user.id}</td>
<td>${user.userName}</td>
<td>${user.name}</td>
<td>${user.age}</td>
<td>${user.sex}</td>
<td><f:formatDate value="${user.birthday}" pattern="yyyy-MM-dd"></f:formatDate></td>
<td><f:formatDate value="${user.updated}" pattern="yyyy-MM-dd hh:mm:ss"></f:formatDate></td>
<td><f:formatDate value="${user.created}" pattern="yyyy-MM-dd hh:mm:ss"></f:formatDate></td>
<td><a href="/user/deleteUserById?id=${user.id}">删除</a></td>
</tr>
</c:forEach>
</table>
</body>
</html>
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