自學中 ，最近想做下ssm整合，不是專業出身的我，學習Java還是比較緩慢。（一邊工作一邊學習非計算類工作）

在整合通過網路基本學習了下，網上大概思路就是用spring整合springmvc 再spring整合mybatis，最後再整合。

作為不懂原理及未去熟悉原始碼的我，基本學會了怎麼把網上基本ssm整合碼出來。寫得爛的，請多包含。作為我學習的動力寫下了這篇部落格。

1.搭建目錄結構如下：

2.在pom.xml檔案中匯入一下所需要的jar包座標依賴

<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.2.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.12</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.39</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.2.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.2.9.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.2.1</version>
      <classifier>sources</classifier>
      <type>jar.sha256</type>
    </dependency>
    <dependency>
      <groupId>com.10duke.client.json</groupId>
      <artifactId>jackson</artifactId>
      <version>1.0.1</version>
    </dependency>
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter</artifactId>
      <version>RELEASE</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>

　　匯入座標後我就開始搭建springmvc並進行測試

3.配置web.xml檔案

　　3.1配置過濾器

<filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

　　3.2配置基本搭建springmvc的配置

<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>

　4.建立spring-mvc.xml配置檔案

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
        ">
    <!--可以後期靜態資源訪問、驅動器、過濾器配置等。
        現在我們匯入了其他倆個xml配置檔案和註解掃描
    -->
    
        <import resource="applicationContext.xml"></import>
        <import resource="mybatis-spring.xml"></import>
        <context:component-scan base-package="com.zero.Contorl"></context:component-scan>
</beans>

　　<context:component-scan base-package="xx.xxx.xxxx"/>會自動掃描該xx.xxx.xxxx包下的註解，完成相應的配置

5.在控制檔案當中使用註解

@Controller
@RequestMapping("/demo")
public class ZeroContorl {
    @Autowired
    private ZeroServiceimpl zeroserviceimpl;
    @RequestMapping("/index")
    public @ResponseBody List<ZeroDetails> index(){
        List<ZeroDetails> x =zeroserviceimpl.FindAll();
        return x;
    }

　　其中註解的詳解請讀者自行進行網上瀏覽，我自己也做了下筆記：

@Component註解：作用於class類上，相當於<bean id="xxx" class="xxx.xxx.xxx">;@Component註解的衍生物分別：1.@Repository在Dao層進行使用；2.@Serivice在Serivice層進行使用；3.Controller在web層使用

@Autowired註解：功能和註解@Resource一樣，可以對類成員變數，方法及建構函式進行標註，完成自動裝配的工作。只不過註解@Resource是按照名稱進行裝配的，而@Autowired則是按照型別進行裝配的

@Qualifier("名稱") 配合@Autowired使用

6.開始進行測試伺服器能否正常訪問，

可以先替換成public void index(){System.out.print("hello");}

7.建立Dao層和Service層，並使用註解

Dao層：

@Repository
public class demodao {
    public List<ZeroDetails> FindAll(){
        ZeroDetails dd=new ZeroDetails();
        dd.setZid(22);
        dd.getZname("xihuan");
        List<ZeroDetails> xx=new ArrayList<>();
        xx.add(dd);
        return xx;
    }

}

　　其中發現少pojo，自行建立pojo;為了方便後面整合mybatis，裡面的變數要與資料庫一致

Service層：

@Service
public class ZeroServiceimpl implements  ZeroService {
    @Autowired
    private com.zero.Dao.demodao2 demodao2;
    @Override
    public List<ZeroDetails> FindAll() {
        return demodao2.FindAll();
    }
}

8.建立applicationContext.xml,spring配置檔案，整合spring、springmvc。

<?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"
       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:component-scan base-package="com.zero.Service"></context:component-scan>
    <context:component-scan base-package="com.zero.Dao"></context:component-scan>
</beans>

總結下基本思路：把所有的類全部交給spring容器，然後在我需要某個類的地方進行注入這個類即可使用該類；

9.搭建mybatis的配置及測試是否搭建成功
　　建立mybatis.xml配置

<?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>
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql:///xxx?useUnicode=true&characterEncoding=utf-8&useSSL=false"/>
                <property name="username" value="xxx"/>
                <property name="password" value="xxx"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper class="com.zero.Dao.demodao2"></mapper>
    </mappers>
</configuration>

　　在demodao2介面下加入mybatis註解

@Repository
public interface demodao2 {
    @Select("select * from zerodetails")
    List<ZeroDetails> FindAll();
}

　　測試：

10.當測試成功後，我們就開始準備spring、mybatis、springmvc整合

建立mybatis-spring.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"
       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">
    <bean id="dataSource" class="com.mchange.v2.c3p0.DriverManagerDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl"
                  value="jdbc:mysql:///xxx?useUnicode=true&characterEncoding=utf-8&useSSL=false"/>
        <property name="user" value="xxxx"/>
        <property name="password" value="xxxx"/>
    </bean>
    <bean id="sqlsessionfactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis.xml"/>
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlsessionfactory"/>
        <property name="basePackage" value="com.zero.Dao"/>
    </bean>
</beans>

　　自我總結下：通過spring進行配置DriverManagerDataSource類需要的基本連結資料驅動配置資訊；再將dataSource配置資訊、mybatis.xml環境配置注入到SqlSessionFactoryBean類當中;MapperScannerConfigurer類我還是專門再網上收的。我這裡就不具體描述了；我認為就是在com.zero.Dao查詢mapper註解資訊，自動裝配；

最後在web.xml中配置監聽器

對了，在之前我們替換測試部分記得返回到開始的檔案哦

進行tomcat基本配置後啟動服務，訪問伺服器，完成