使用普通的maven web工程整合SSM

以簡(jiǎn)單的查詢和保存操作為例進(jìn)行整合SSM凡怎，SSM整合可以使用多種方式，這里使用十分流行且方便簡(jiǎn)單的XML+注解 的方式進(jìn)行整合。

【*】整合的總體思路

1. 搭建整合環(huán)境
2. 搭建Spring環(huán)境配置
3. 使用Spring整合SpringMVC
4. 使用Spring整合MyBatis

SSM整合思路.png

【*】項(xiàng)目結(jié)構(gòu)圖

SSM項(xiàng)目整合結(jié)構(gòu)圖.png

一、搭建整合環(huán)境

1). 數(shù)據(jù)庫(kù)準(zhǔn)備

create database ssm;
use ssm;
create table account(
    id int primary key auto_increment,
    name varchar(20),
    money double
);

2). 創(chuàng)建maven工程

此處使用普通的，沒(méi)有繼承的maven web工程挡爵，后期使用maven高級(jí)功能進(jìn)行改造

1. pom.xml文件中的坐標(biāo)依賴

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <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 -->
    <!-- aop相關(guān)的 -->
    <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>
    <!-- springMVC -->
    <dependency>
      <groupId>org.springframework</groupId>
      <!-- 內(nèi)部提供了一個(gè)監(jiān)聽(tīng)器，監(jiān)聽(tīng)servletContext域的創(chuàng)建甚垦，用于加載spring配置文件 -->
      <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>${spring.version}</version>
    </dependency>
    <!-- 事務(wù)管理 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${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>
    <!-- el表達(dá)式 -->
    <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>

2. 編寫(xiě)domain下的Account實(shí)體類

public class Account implements Serializable {

    private Integer id;
    private String name;
    private Double money;
    ... get/set/構(gòu)造/toString代碼略...

3. 編寫(xiě)dao層的AccountDao接口

順便使用注解配置代理對(duì)象增強(qiáng)的內(nèi)容茶鹃。

/** 賬戶dao接口 */
@Repository
public interface AccountDao {

    /** 查詢所有賬戶信息 */
    @Select("select * from account")
    public List<Account> findAll();

    /** 保存賬戶信息 */
    @Insert("insert into account (name, money) values (#{name}, #{money})")
    public void saveAccount(Account account);
}

4. 編寫(xiě)service層的AccountService接口和實(shí)現(xiàn)類AccountServiceImpl

public interface AccountService {

    /** 查詢所有 */
    public List<Account> findAll();

    /** 保存賬戶信息 */
    public void saveAccount(Account account);
}

@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Override
    public List<Account> findAll() {
        System.out.println("業(yè)務(wù)層：查詢所有信息");
        return accountDao.findAll();
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("業(yè)務(wù)層：保存賬戶信息");
        accountDao.saveAccount(account);
    }
}

5. 編寫(xiě)web層的控制器AccountController

1. index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>首頁(yè)</title>
</head>
<body>
    <a href="${pageContext.request.contextPath}/account/findAll">測(cè)試查詢</a>
    <hr>
    <h1>保存用戶</h1>
    <form action="${pageContext.request.contextPath}/account/save">
        姓名：<input type="text" name="name"> <br>
        余額：<input type="number" name="money"> <br>
        <input type="submit" value="提交保存">
    </form>
</body>
</html>

2. 控制器代碼

/** web層控制器 */
@Controller
@RequestMapping("/account")
public class AccountController {

    /** spring的依賴注入 */
    @Autowired
    private AccountService accountService;

    /** 查詢所有 */
    @RequestMapping("/findAll")
    public String findAll(Model model) {
        System.out.println("表現(xiàn)層：查詢所有");

        // 調(diào)用service層
        List<Account> accounts = accountService.findAll();

        // 存入域中
        model.addAttribute("accounts", accounts);
        return "accounts";
    }

    /** 保存用戶 */
    @RequestMapping("/save")
    public void save(Account account,
                     HttpServletRequest request,
                     HttpServletResponse response) throws Exception {

        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath() + "/account/findAll");
        return;
    }
}

3. accounts.jsp

<%@ 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>查詢所有</title>
</head>
<body>
    <c:forEach items="${accounts}" var="account">
        ${account.name} : ${account.money} <br>
    </c:forEach>
</body>
</html>

3). 配置log4j.properties配置文件

配置文件放在resources目錄下

# 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

二、Spring框架代碼的編寫(xiě)以及整合MyBatis

1). 搭建Spring的開(kāi)發(fā)環(huán)境艰亮、整合MyBatis闭翩、事務(wù)配置

在sources文件夾下創(chuàng)建Spring的配置文件applicationContext.xml，由于Spring中整合了MyBatis迄埃，所以不需要再單獨(dú)編寫(xiě)SqlMapConfig.xml配置文件了

<?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">

    <!-- 開(kāi)啟注解的掃描,希望只處理service和dao,controller不需要Spring框架去處理 -->
    <context:component-scan base-package="cn.itcast">
        <!-- 配置哪些注解不掃描 -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- Spring整合MyBatis框架疗韵，將SqlMapConfig.xml配置轉(zhuǎn)入spring中進(jìn)行整合，存入IOC容器中
     所以就不需要SqlMapConfig.xml配置文件了-->
    <!-- 配置連接池 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
        <property name="user" value="root"/>
        <property name="password" value="abc123"/>
    </bean>

    <!-- 配置SqlSessionFactory工廠 -->
    <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="cn.itcast.dao"/>
    </bean>

    <!-- 配置Spring框架聲明式事務(wù)管理器 -->
    <!-- 配置事務(wù)管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 配置事務(wù)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增強(qiáng)侄非，配置切入點(diǎn) -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))"/>
    </aop:config>
</beans>

2). 編寫(xiě)測(cè)試類進(jìn)行測(cè)試

public class SpringTest {

    @Test
    public void run1() {
        // 加載配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        // 獲取對(duì)象
        AccountService service = (AccountService)ac.getBean("accountService");
        // 調(diào)方法
        service.findAll();
        service.saveAccount(new Account());
    }
}

三蕉汪、Spring整合SpringMVC

Spring整合SpringMVC介紹.png

1). 編寫(xiě)SpringMVC的配置文件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">

    <!-- 開(kāi)啟注解掃描流译，只掃描Controller -->
    <context:component-scan base-package="cn.itcast">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 配置視圖解析器對(duì)象 -->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!-- 過(guò)濾靜態(tài)資源，使其不用經(jīng)過(guò)編碼過(guò)濾器的處理 -->
    <mvc:resources mapping="/css/**" location="/css/"/>
    <mvc:resources mapping="/images/**" location="/images/"/>
    <mvc:resources mapping="/js/**" location="/js/"/>

    <!-- 開(kāi)啟SpringMVC注解的支持 -->
    <mvc:annotation-driven/>
</beans>

2). 配置web.xml配置文件

1. 利用Spring提供的的監(jiān)聽(tīng)器肤无，監(jiān)聽(tīng)ServletContext域(最大域)的創(chuàng)建先蒋，加載spring的配置文件applicationContext.xml骇钦，創(chuàng)建IOC容器宛渐。MyBatis被整合后，其bean都存放于IOC容器中眯搭。
2. 配置解決中文亂碼問(wèn)題的過(guò)濾器
3. 配置前端控制器窥翩，初始化加載springMVC的配置文件springmvc.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<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">
  <display-name>Archetype Created Web Application</display-name>

  <!-- 配置Spring的監(jiān)聽(tīng)器，來(lái)自spring-web坐標(biāo),監(jiān)聽(tīng)ServletContext域的創(chuàng)建
   默認(rèn)只加載WEB-INF目錄下的applicationContext.xml配置文件
   解決方案：設(shè)置配置文件的路徑 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 設(shè)置被加載的配置文件的路徑 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>


  <!-- 解決中文亂碼的過(guò)濾器 -->
  <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>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!-- 配置前端控制器 -->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 加載springmvc.xml配置文件 -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!-- 啟動(dòng)服務(wù)器鳞仙，創(chuàng)建該servlet -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

四寇蚊、Spring整合MyBatis

見(jiàn)配置Spring的配置文件applicationContext.xml