单工程搭建springmvc+spring+mybatis(maven,idea)

1.pom.xml

  <properties>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <maven.compiler.source>1.7</maven.compiler.source>

    <maven.compiler.target>1.7</maven.compiler.target>

  </properties>

  <dependencies>

    <!-- 单元测试 -->

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>4.11</version>

    </dependency>

    <!-- 1.日志 -->

    <!-- 实现slf4j接口并整合 -->

    <dependency>

      <groupId>ch.qos.logback</groupId>

      <artifactId>logback-classic</artifactId>

      <version>1.1.1</version>

    </dependency>

    <!-- 2.数据库 -->

    <dependency>

      <groupId>mysql</groupId>

      <artifactId>mysql-connector-java</artifactId>

      <version>5.1.37</version>

      <scope>runtime</scope>

    </dependency>

    <dependency>

      <groupId>c3p0</groupId>

      <artifactId>c3p0</artifactId>

      <version>0.9.1.2</version>

    </dependency>

    <!-- DAO: MyBatis -->

    <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis</artifactId>

      <version>3.3.0</version>

    </dependency>

    <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis-spring</artifactId>

      <version>1.2.3</version>

    </dependency>

    <!-- 3.Servlet web -->

    <dependency>

      <groupId>taglibs</groupId>

      <artifactId>standard</artifactId>

      <version>1.1.2</version>

    </dependency>

    <dependency>

      <groupId>jstl</groupId>

      <artifactId>jstl</artifactId>

      <version>1.2</version>

    </dependency>

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-databind</artifactId>

      <version>2.5.4</version>

    </dependency>

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>javax.servlet-api</artifactId>

      <version>3.1.0</version>

      <scope>provided</scope>

    </dependency>

    <!-- 4.Spring -->

    <!-- 1)Spring核心 -->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-core</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-beans</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <!-- 2)Spring DAO层 -->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-jdbc</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-tx</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <!-- 3)Spring web -->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-web</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-webmvc</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <!-- 4)Spring test -->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-test</artifactId>

      <version>4.1.7.RELEASE</version>

    </dependency>

    <!-- redis客户端:Jedis -->

    <dependency>

      <groupId>redis.clients</groupId>

      <artifactId>jedis</artifactId>

      <version>2.7.3</version>

    </dependency>

    <dependency>

      <groupId>com.dyuproject.protostuff</groupId>

      <artifactId>protostuff-core</artifactId>

      <version>1.0.8</version>

    </dependency>

    <dependency>

      <groupId>com.dyuproject.protostuff</groupId>

      <artifactId>protostuff-runtime</artifactId>

      <version>1.0.8</version>

    </dependency>

    <!-- Map工具类 -->

    <dependency>

      <groupId>commons-collections</groupId>

      <artifactId>commons-collections</artifactId>

      <version>3.2</version>

    </dependency>

  </dependencies>

  <build>

    <plugins>

      <plugin>

        <groupId>org.apache.tomcat.maven</groupId>

        <artifactId>tomcat7-maven-plugin</artifactId>

        <version>2.1</version>

        <configuration>

          <port>8080</port>

          <path>/</path>

          <uriEncoding>UTF-8</uriEncoding>

          <server>tomcat7</server>

        </configuration>

      </plugin>

    </plugins>

    <finalName>ssm</finalName>

  </build>

2.dao层的spring配置文件spring-dao.xml

<!-- 1.配置数据库相关参数properties的属性：${url} -->

    <context:property-placeholder location="classpath:jdbc.properties" />

    <!-- 2.数据库连接池 -->

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <!-- 配置连接池属性 -->

        <property name="driverClass" value="${jdbc.driver}" />

        <property name="jdbcUrl" value="${jdbc.url}" />

        <property name="user" value="${jdbc.username}" />

        <property name="password" value="${jdbc.password}" />

        <!-- c3p0连接池的私有属性 -->

        <property name="maxPoolSize" value="30" />

        <property name="minPoolSize" value="10" />

        <!-- 关闭连接后不自动commit -->

        <property name="autoCommitOnClose" value="false" />

        <!-- 获取连接超时时间 -->

        <property name="checkoutTimeout" value="10000" />

        <!-- 当获取连接失败重试次数 -->

        <property name="acquireRetryAttempts" value="2" />

    </bean>

    <!-- 3.配置SqlSessionFactory对象 -->

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <!-- 注入数据库连接池 -->

        <property name="dataSource" ref="dataSource" />

        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->

        <property name="configLocation" value="classpath:mybatis-config.xml" />

        <!-- 扫描entity包 使用别名 -->

        <property name="typeAliasesPackage" value="com.hxhui94.sl.bean" />

        <!-- 扫描sql配置文件:mapper需要的xml文件 -->

        <property name="mapperLocations" value="classpath:mapper/*.xml" />

    </bean>

    <!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <!-- 注入sqlSessionFactory -->

        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />

        <!-- 给出需要扫描Dao接口包 -->

        <property name="basePackage" value="com.hxhui94.sl.dao" />

    </bean>

3.service层spring的配置文件spring-service.xml

 <!-- 扫描service包下所有使用注解的类型 -->

    <context:component-scan base-package="com.hxhui94.sl.service" />

    <!-- 配置事务管理器 -->

    <bean id="transactionManager"

          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <!-- 注入数据库连接池 -->

        <property name="dataSource" ref="dataSource" />

    </bean>

    <!-- 配置基于注解的声明式事务 -->

    <tx:annotation-driven transaction-manager="transactionManager" />

4.web层spring的配置文件spring-web.xml

<!-- 配置SpringMVC -->

    <!-- 1.开启SpringMVC注解模式 -->

    <!-- 简化配置：

        (1)自动注册DefaultAnootationHandlerMapping,AnotationMethodHandlerAdapter

        (2)提供一些列：数据绑定，数字和日期的format @NumberFormat, @DateTimeFormat, xml,json默认读写支持

    -->

    <mvc:annotation-driven />

    <!-- 2.静态资源默认servlet配置

        (1)加入对静态资源的处理：js,gif,png

        (2)允许使用"/"做整体映射

     -->

    <mvc:default-servlet-handler/>

    <!-- 3.配置jsp 显示ViewResolver -->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />

        <property name="prefix" value="/WEB-INF/jsp/" />

        <property name="suffix" value=".jsp" />

    </bean>

    <!-- 4.扫描web相关的bean -->

    <context:component-scan base-package="com.hxhui94.sl.web" />

5.mybatis的配置文件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>

    <!-- 配置全局属性 -->

    <settings>

        <!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值 -->

        <setting name="useGeneratedKeys" value="true" />

        <!-- 使用列别名替换列名 默认:true -->

        <setting name="useColumnLabel" value="true" />

        <!-- 开启驼峰命名转换:Table{create_time} -> Entity{createTime} -->

        <setting name="mapUnderscoreToCamelCase" value="true" />

    </settings>

</configuration>

6.数据库的配置文件

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf8

jdbc.username=root

jdbc.password=root

7.web.xml的配置文件

<web-app>

  <display-name>Archetype Created Web Application</display-name>

  <servlet>

    <servlet-name>springmvc</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!-- 配置springMVC需要加载的配置文件

        spring-dao.xml,spring-service.xml,spring-web.xml

        Mybatis - > spring -> springmvc

     -->

    <init-param>

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:spring/spring-*.xml</param-value>

    </init-param>

  </servlet>

  <servlet-mapping>

    <servlet-name>springmvc</servlet-name>

    <!-- 默认匹配所有的请求 -->

    <url-pattern>/</url-pattern>

  </servlet-mapping>

</web-app>

8.User.java

public class User {

    private  Integer id;

    private String username;

    private String password;

    public String getUsername() {

        return username;

    }

    public void setUsername(String username) {

        this.username = username;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

}

9.UserDao.java

public interface UserDao {

    User getUserById(int id);

}

10.UserServiceImpl.java

@Service

public class UserServiceImpl implements UserService {

    @Autowired

    private UserDao userDao;

    @Override

    public User getUserById(int id) {

        return userDao.getUserById(id);

    }

}

11.UserController.java

@Controller

@RequestMapping("/user")

public class UserController {

    @Autowired

    private UserService userService;

    @RequestMapping("get-user-by-id")

    @ResponseBody

    public User getUserById(){

        return userService.getUserById(1);

    }

}

12运行mvn tomcat7:run

在浏览器输入http://localhost:8080/user/get-user-by-id便可以看到结果