tomcat版本:apache-tomcat-7.0.70
一、新建一个maven的web项目
1.1、请勾选“Create a simple project”,创建一个简单的项目,这里不使用模板。也可以使用模板,选择WebApp,如果使用模板这里就不应该勾选。如下图所示:
1.2、填写好包名、项目名,选择打包类型为:war,如下图所示:
1.3 创建项目后有报错是因为没有检测到对应的web结构,打开src/main/webapp目录,在其下创建WEB_INF目录和其下的web.xml文件,如下图:
1.4、项目创建好后可能会发现有错误,选择项目,右键“属性properties”->"层面Project Facets"->"Java"修改版本号为1.8,默认为1.5或其它版本,先去掉“Dynamic Web Module”保存后再勾选,选择版本为3.0,再按箭头所示操作,步骤如下图所示:(以下的jdk版本要一样)
1.5、选择“Deployment Assembly”项目部署项,删除“/target/m2e-wtp/web-resources”目录,因为这项不需要部署出去。
二、spring整合mybatis
2.1 添加依赖包
<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.my.springmvc</groupId> <artifactId>StudySSM</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.version>4.3.2.RELEASE</spring.version> <druid.version>1.0.9</druid.version> </properties> <dependencies> <!-- JUnit单元测试工具 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> <!--Spring框架核心库 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <!-- aspectJ AOP 织入器 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.9</version> </dependency> <!--mysql数据库驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.38</version> </dependency> <!-- mybatis ORM框架 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.2</version> </dependency> <!--mybatis-spring适配器 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <!--Spring java数据库访问包,在本例中主要用于提供数据源 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- druid连接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> <!-- Servlet核心包 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <!--JSP --> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <!--log4j日志包 --> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>2.6.1</version> </dependency> </dependencies> <!-- jdk 1.8 --> <build> <plugins> <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> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> </project>
2.2 web.xml中配置监听器ContextLoaderListener
ContextLoaderListener的作用就是启动Web容器时,自动装配ApplicationContext的配置信息。因为它实现了ServletContextListener这个接口,在web.xml配置这个监听器,启动容器时,就会默认执行它实现的方法。
<?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" metadata-complete="true"> <!-- 上下文配置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:application-context.xml</param-value> </context-param> <!-- 监听器配置 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
2.3 创建db.properties文件
driverClassName=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/test?characterEncoding=UTF-8 username=root password=123456
2.4 创建application-context.xml 文件,并配置需要读取的xml文件。
<?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:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task" 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/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 1.配置spring自动扫描 --> <context:component-scan base-package="com.my.springmvc" /> <!-- 2.读取多个properties --> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:db.properties</value> </list> </property> </bean> <!-- 3.配置Druid --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <!-- 驱动类 --> <property name="driverClassName" value="${driverClassName}" /> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> </bean> <!-- 4.配置会话工厂 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 配置数据源 --> <property name="dataSource" ref="dataSource" /> <!-- 全局配置文件 --> <property name="configLocation" value="classpath:mybatis-config.xml" /> </bean> <!-- 5.自动扫描对象关系映射, 接口和Mapper发布后在同一个文件夹下, 接口和Mapper文件名相同. --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 基本包 --> <property name="basePackage" value="com.my.springmvc.dao" /> </bean> <!-- 6.配置事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 7.开启事务的注解配置方式 @Transactional --> <tx:annotation-driven transaction-manager="transactionManager" /> </beans>
三、spring整合mybatis的测试
3.1 实体类的创建
package com.my.springmvc.model; import java.util.Date; public class User { private Integer id; private String name; private Integer age; private Date updateTime; @Override public String toString() { return "User [id=" + id + ", name=" + name + ", age=" + age + ", updateTime=" + updateTime + "]"; } 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 Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public Date getUpdateTime() { return updateTime; } public void setUpdateTime(Date updateTime) { this.updateTime = updateTime; } }
3.2 UserMapper接口的定义,注意接口和mapper文件的名称要一样,发布后要在同一个包下面。
package com.my.springmvc.dao; import java.util.List; import com.my.springmvc.model.User; public interface UserMapper { // 查询所有用户 public List<User> getAllUsers(); // 保存用户 public Integer saveUser(User user); }
3.3 UserMapper.xml文件
<?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"> <!--命名空间应该是对应接口的包名+接口名 --> <mapper namespace="com.my.springmvc.dao.UserMapper"> <!--获得所有用户 --> <select id="getAllUsers" resultType="User"> SELECT u.id, u.name, u.age, u.updateTime FROM tbl_user u </select> <!--新增用户 --> <insert id="saveUser" parameterType="User"> INSERT INTO tbl_user ( id, <if test="name != null">name,</if> <if test="age != null">age,</if> updateTime ) values ( #{id}, <if test="name != null">#{name},</if> <if test="age != null">#{age},</if> now() ) </insert> </mapper>
3.4 创建测试类进行测试
package com.my.springmvc.test; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import org.springframework.transaction.annotation.Transactional; import com.my.springmvc.dao.UserMapper; import com.my.springmvc.model.User; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = {"classpath:application-context.xml"}) public class TestSpringMVC { @Autowired private UserMapper userMapper; @Test public void testMy() { User user = new User(); user.setId(5); user.setName("huqi"); userMapper.saveUser(user); } // 测试事务,出现异常会回滚 @Test @Transactional public void testMyTransaction() { User user = new User(); user.setId(2); user.setName("ZHsan"); userMapper.saveUser(user);
// 不增加@Transaction并抛出异常,数据插入到数据库中 // 增加@Transactional并抛出异常,数据不能插入到数据库中则表示事务起作用; throw new RuntimeException(); } }
3.5 spring整合mybatis后的项目结构:
四、整合springmvc
4.1 添加依赖包
<!-- Spring MVC --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency>
4.2 web.xml文件中配置,注册Spring MVC前置控制器Servlet,添加了一个全局的编码过滤器。
<!-- springmvc --> <servlet> <servlet-name>springDispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 默认: WEB-INF/[servlet-name]-servlet.xml --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- 配置规则 --> <servlet-mapping> <servlet-name>springDispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--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>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <!-- 路径映射 --> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
4.3 添加Spring MVC配置文件springmvc-servlet.xml,文件内容如下:
<?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:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task" 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/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 扫描 --> <context:component-scan base-package="com.my" /> <!-- 处理器映射器 、适配器的开启 --> <mvc:annotation-driven /> <!-- 试图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
五、pom.xml文件的配置
<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.my.springmvc</groupId> <artifactId>StudySSM</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.version>4.3.2.RELEASE</spring.version> <druid.version>1.0.9</druid.version> </properties> <dependencies> <!-- JUnit单元测试工具 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> <!--Spring框架核心库 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <!-- aspectJ AOP 织入器 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.9</version> </dependency> <!-- Spring MVC --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <!--mysql数据库驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.38</version> </dependency> <!-- mybatis ORM框架 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.2</version> </dependency> <!--mybatis-spring适配器 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <!--Spring java数据库访问包,在本例中主要用于提供数据源 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- druid连接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> <!-- Servlet核心包 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <!--JSP --> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <!--log4j日志包 --> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>2.6.1</version> </dependency> </dependencies> <!-- jdk 1.8 --> <build> <plugins> <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> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> </project>