选择XML + 注解的方式
利用Maven骨架创建webapp项目，在pom.xml中导入依赖的坐标
<properties>
<!--版本锁定-->
<spring.version>5.0.2.RELEASE</spring.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mysql.version>5.1.6</mysql.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>
<dependencies>
<!-- spring -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log end -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
</dependencies>
创建数据库
create table account(
id int primary key auto_increment,
name varchar(20),
money double
);
创建实体类
public class Account implements Serializable {
private Integer id;
private String name;
private Double money;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
@Override
public String toString() {
return "Account{" +
"id=" + id +
", name=‘" + name + ‘\‘‘ +
", money=" + money +
‘}‘;
}
}
创建dao层接口
public interface AccountDao {
/**
* 查询所有账户
* @return
*/
List<Account> findAll();
/**
* 保存账户
* @param account
*/
void saveAccount(Account account);
}
创建service层接口及其实现类
public interface AccountService {
/**
* 查询所有账户
* @return
*/
List<Account> findAll();
/**
* 保存账户
* @param account
*/
void saveAccount(Account account);
}
public class AccountServiceImpl implements AccountService {
private AccountDao accountDao;
@Override
public List<Account> findAll() {
System.out.println("业务层：查询所有账户");
return accountDao.findAll();
}
@Override
public void saveAccount(Account account) {
accountDao.saveAccount(account);
}
}
在resources目录下创建连接数据库属性文件jdbcConfig.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf-8&useSSL=false
jdbc.username=root
jdbc.password=...
log4j.properties日志文件
# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE debug info warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE
# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE
# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n
# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n
在resources目录下创建Spring配置文件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/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/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">
<!--配置spring创建容器时要扫描的包-->
<context:component-scan base-package="com.chenpeng">
<!--配置要忽略的注解-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
</beans>
在dao层接口上配置注解
@Repository
public interface AccountDao
为service层接口实现类配置注解
@Service("accountService")
public class AccountServiceImpl implements AccountService {
@Autowired
private AccountDao accountDao;
...
}
创建测试类测试通过
public class SpringTest {
@Test
public void testOne(){
ApplicationContext ac = new ClassPathXmlApplicationContext("ApplicationContext.xml");
AccountService as = ac.getBean("accountService", AccountService.class);
as.findAll();
}
}
在resources目录下创建SpringMVC配置文件SpringMVC.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
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
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">
<!--配置扫描Controller的注解，其他的不扫描-->
<context:component-scan base-package="com.chenpeng">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--配置视图解析器-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--配置哪些静态资源不过滤-->
<mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
<mvc:resources location="/css/" mapping="/css/**"></mvc:resources>
<mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
<!--配置开启spring注解mvc的支持-->
<mvc:annotation-driven/>
</beans>
在webapp/WEB-INF/目录下的web.xml中添加配置
<!--配置前端控制器-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:SpringMVC.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置解决中文乱码问题-->
<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>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
创建控制器类com.chenpeng.controller.AccountController
@Controller
@RequestMapping(path = "/account")
public class AccountController {
@Autowired
private AccountService accountService;
@RequestMapping(path = "/findAll")
public String findAll(Model model){
System.out.println("表现层：查询所有账户");
List<Account> list = accountService.findAll();
model.addAttribute("list",list);
return "success";
}
@RequestMapping(path = "/saveAccount")
public void saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
accountService.saveAccount(account);
response.sendRedirect(request.getContextPath()+"/account/findAll");
return;
}
}
在webapp目录下创建index.jsp，在webapp/WEB-INF目录下创建pages目录，在其中创建success.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<a href="account/findAll">测试查询</a>
<h3>测试保存</h3>
<form action="account/saveAccount" method="post">
姓名：<input type="text" name="name"><br>
金钱：<input type="text" name="money"><br>
<input type="submit" value="提交">
</form>
</body>
</html>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>查询所有账户</h1>
<c:forEach items="${list}" var="account">
${account.name}
</c:forEach>
</body>
</html>
在web.xml中配置监听器ContextLoaderListener，该监听器可以监听ServletContext的创建和销毁，ServletContext的创建和销毁与Tomcat是同步的，而ContextLoaderListener默认加载WEB-INF目录下的ApplicationContext.xml配置文件，所以要设置配置文件的路径
<!--配置Spring的监听器，默认值加载WEB-INF目录下的ApplicationContext.xml配置文件-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--设置配置文件的路径-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:ApplicationContext.xml</param-value>
</context-param>
在resources目录下创建Mybatis主配置文件SqlMapConfig.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>
<!--配置环境-->
<environments default="mysql">
<environment id="mysql">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
<property name="username" value="root"/>
<property name="password" value="..."/>
</dataSource>
</environment>
</environments>
<!--配置mappers-->
<mappers>
<package name="com.chenpeng.dao"/>
</mappers>
</configuration>
为dao层方法配置注解
@Repository
public interface AccountDao {
/**
* 查询所有账户
* @return
*/
@Select("select * from account")
List<Account> findAll();
/**
* 保存账户
* @param account
*/
@Insert("insert into account(name,money) values(#{name},#{money})")
void saveAccount(Account account);
}
创建测试类测试通过
public class TestMybatis {
private InputStream in;
private SqlSession sqlSession;
private AccountDao accountDao;
@Before
public void init() throws IOException {
in = Resources.getResourceAsStream("SqlMapConfig.xml");
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
sqlSession = factory.openSession(true);
accountDao = sqlSession.getMapper(AccountDao.class);
}
@After
public void destroy() throws IOException {
sqlSession.close();
in.close();
}
@Test
public void testFindAll() {
List<Account> list = accountDao.findAll();
for (Account account : list) {
System.out.println(account);
}
}
@Test
public void testSaveAccount(){
Account account = new Account();
account.setName("cc");
account.setMoney(666.0);
accountDao.saveAccount(account);
}
}
让spring来管理SqlSession的创建，即在spring配置文件中配置SqlSessionFactory工厂，并且不再需要SqlMapConfig.xml，在ApplicationContext.xml中配置Mybatis
<!--Spring整合Mybatis框架-->
<context:property-placeholder location="classpath:jdbcConfig.properties"/>
<!--配置连接池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--配置SqlSession工厂-->
<bean id="SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--配置AccountDao接口所在包-->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.chenpeng.dao"/>
</bean>
dao层接口中的保存方法需要为其添加事务控制，在ApplicationContext配置spring的声明式事务管理
<!--配置spring的声明式事务管理-->
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--配置事务通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="*" isolation="DEFAULT"/>
</tx:attributes>
</tx:advice>
<!--配置AOP切入点-->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.chenpeng.service.impl.*.*(..))"/>
</aop:config>
原文：https://www.cnblogs.com/codeDD/p/12699163.html