SSM整合开发

开发步骤

步骤一：导包：1.Spring-context包 含有 核心容器中的四个jar包和aop包…大致32个jar包

 <dependencies>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>aspectjgroupId>
            <artifactId>aspectjweaverartifactId>
            <version>1.5.4version>
        dependency>
        
        <dependency>
            <groupId>aopalliancegroupId>
            <artifactId>aopallianceartifactId>
            <version>1.0version>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-txartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>commons-beanutilsgroupId>
            <artifactId>commons-beanutilsartifactId>
            <version>1.7.0version>
        dependency>
        
        <dependency>
            <groupId>commons-dbutilsgroupId>
            <artifactId>commons-dbutilsartifactId>
            <version>1.4version>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aspectsartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.13.1version>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>5.0.5.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>commons-logginggroupId>
            <artifactId>commons-loggingartifactId>
            <version>1.1.1version>
        dependency>
        
        <dependency>
            <groupId>log4jgroupId>
            <artifactId>log4jartifactId>
            <version>1.2.12version>
        dependency>
        
        <dependency>
            <groupId>commons-iogroupId>
            <artifactId>commons-ioartifactId>
            <version>2.5version>
        dependency>
        
        <dependency>
            <groupId>commons-fileuploadgroupId>
            <artifactId>commons-fileuploadartifactId>
            <version>1.4version>
        dependency>
        
        <dependency>
            <groupId>jstlgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>javax.servlet-apiartifactId>
            <version>3.0.1version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>javax.servlet.jsp-apiartifactId>
            <version>2.2.1version>
            <scope>providedscope>
        dependency>
        
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.6version>
            <scope>runtimescope>
        dependency>
        
        <dependency>
            <groupId>com.mchangegroupId>
            <artifactId>c3p0artifactId>
            <version>0.9.5.2version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druidartifactId>
            <version>1.2.2version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.4.6version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.2version>
        dependency>
        
        <dependency>
            <groupId>cglibgroupId>
            <artifactId>cglibartifactId>
            <version>2.2.2version>
        dependency>
    dependencies>

步骤二：在resources资源文件夹下面新建两个目录。一个是spring(Spring的核心配置)，一个是mybatis(核心配置)
步骤三：配置db.properties(数据库连接信息)和log4j.properties(日志配置文件)在resources目录下
db.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql:///db_springmvc?CharacterEncoding=UTF-8
username=root
password=admin

log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG,    stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

步骤四:在spring目录下创建springmvc.xml文件

• 设置处理器映射器和处理器适配器的注解驱动
• 开启扫描controller组件
• 配置视图解析器 添加前后缀

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/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">
    
    <mvc:annotation-driven/>
    
    <context:component-scan base-package="com.zhiyou100.web.Controller"/>
    
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view"/>
        <property name="suffix" value=".jsp"/>
    bean>
beans>

步骤五：在spring目录下创建applicationContext-dao.xml

• 引入db.properties
• 配置连接池依赖于 db.properties 生成dataSource对象
• 配置SqlSessionFactory对象
• 配置mapper扫描

<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"
       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">
    
    <context:property-placeholder location="classpath:db.properties"/>
    
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${driver}"/>
        <property name="url" value="${url}"/>
        <property name="username" value="${username}"/>
        <property name="password" value="${password}"/>
    bean>
    
    
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
        <property name="typeAliasesPackage" value="com.zhiyou100.pojo"/>
    bean>
    
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zhiyou100.mapper"/>
    bean>
beans>

步骤五：在spring目录下创建applicationContext-service.xml文件

• 配置扫描service组件

<coontext:component-scan base-package="com.zhiyou100.service"/>

步骤六：在spring目录下创建applicationContext-tx.xml文件(配置事务)

<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"
       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/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 id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        
        <property name="dataSource" ref="dataSource"/>
    bean>
    
    <tx:advice transaction-manager="transactionManager" id="txAdvice">
        <tx:attributes>
            <tx:method name="find*" propagation="REQUIRED" read-only="true" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="get*" propagation="REQUIRED" read-only="true" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="select*" propagation="REQUIRED" read-only="true" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="query*" propagation="REQUIRED" read-only="true" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="add*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="insert*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="append*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="delete*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="remove*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="update*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
            <tx:method name="modify*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" timeout="-1"/>
        tx:attributes>
    tx:advice>
    
    <aop:config>
        
        <aop:pointcut id="pct" expression="execution(* com.zhiyou100.service..*.*(..))"/>
        
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pct"/>
    aop:config>
beans>

步骤七:在mybatis目录下创建mybatis-config.xml文件

<?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">
<!--mybatis主配置文件-->
<configuration>

</configuration>

步骤八：配置web.xml文件

• 配置上下文监听器 ContextLoaderListener 读取spring的配置文件
• 配置前端控制器 DispatcherServlet 读取springmvc.xml配置文件

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:spring/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/springmvc.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>
    
    <servlet-mapping>
        <servlet-name>DispatcherServletservlet-name>
        <url-pattern>*.actionurl-pattern>
    servlet-mapping>
web-app>

步骤九：创建mapper、util、pojo包以及对应的类
pojo实体类

public class Role implements Serializable {
    /**
     * 按照数据库中的字段匹配
     */
    private Integer r_id;
    private String r_name;
    private String r_desc;
    private String r_rTime;

    public Role() {
    }

    public Role(Integer r_id, String r_name, String r_desc, String r_rTime) {
        this.r_id = r_id;
        this.r_name = r_name;
        this.r_desc = r_desc;
        this.r_rTime = r_rTime;
    }

    public Integer getR_id() {
        return r_id;
    }

    public void setR_id(Integer r_id) {
        this.r_id = r_id;
    }

    public String getR_name() {
        return r_name;
    }

    public void setR_name(String r_name) {
        this.r_name = r_name;
    }

    public String getR_desc() {
        return r_desc;
    }

    public void setR_desc(String r_desc) {
        this.r_desc = r_desc;
    }

    public String getR_rTime() {
        return r_rTime;
    }

    public void setR_rTime(String r_rTime) {
        this.r_rTime = r_rTime;
    }

    @Override
    public String toString() {
        return "Role{" +
                "r_id=" + r_id +
                ", r_name='" + r_name + '\'' +
                ", r_desc='" + r_desc + '\'' +
                ", r_rTime='" + r_rTime + '\'' +
                '}';
    }
}

mapper映射接口以及mapper映射文件：

//RoleMapper接口
public interface RoleMapper {
    //查询所有的角色信息
    List<Role> getAllRoles();
}

<mapper namespace="com.zhiyou100.mapper.RoleMapper">
    
    <select id="getAllRoles" resultType="role">
        select * from t_role
    select>
mapper>

业务层接口及其实现类(service层)

public interface RoleService {
    /**
     * 获取所有的角色信息
     * @return
     */
    List<Role> getAllRoles();
}

@Service("roleService")
public class RoleServiceImpl implements RoleService {
    //属性注入
    @Autowired
    private RoleMapper roleMapper;
    @Override
    public List<Role> getAllRoles() {
        return roleMapper.getAllRoles();
    }
}

控制层编写功能实现(controller层)
方式一：

/**
 * @Controller
 * 把当前的类交给spring管理
 */
@Controller("roleController")
public class RoleController {
    //属性注入
    @Autowired
    private RoleService roleService;
    //构建获取所有的角色信息的服务
    @RequestMapping("/role/listRoles.action")
    public ModelAndView getAllRoles(){
        //构建modelAndView模型视图组件
        ModelAndView mav = new ModelAndView();
        //获取service层中的结果值
        List<Role> allRoles = roleService.getAllRoles();
        //把roles存进model模型组件中
        mav.addObject("list", allRoles);
        //指定视图地址
        mav.setViewName("/role/roleList");
        return mav;
    }
 }

方式二：

@RequestMapping("/role/listRoles.action")
    public void getAllRoles02(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
        //获取service层中的结果值
        List<Role> allRoles = roleService.getAllRoles();
        //把roles存进request域中
        request.setAttribute("list", allRoles);
        //内部资源转发
        request.getRequestDispatcher("/role/roleList").forward(request, response);
    }

方式三

@RequestMapping("/role/listRoles.action")
    public String getAllRoles03(Model model){
        //获取service层中的结果值
        List<Role> allRoles = roleService.getAllRoles();
        model.addAttribute("list", allRoles);
        return "/role/roleList";
    }

结果如下：