SSM整合（spring+mvc+mybatis）

二话不说，先导入一波依赖

大概的包架构：

<?xml version="1.0" encoding="UTF-8"?>

<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>SpringMvc04</groupId>
  <artifactId>SpringMvc04</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>SpringMvc04 Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <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>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <!--MyBatis的依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.5</version>
    </dependency>
    <!--MySQL的依赖-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.43</version>
    </dependency>
    <!--SpringMVC的依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <!--spring连接数据库的依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <!--spring配置切面的依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <!--spring的上下文的依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <!--Spring和MyBatis和整合依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!--C3p0的依赖-->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.1</version>
    </dependency>
    <!--servlet的依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.0</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>SpringMvc04</finalName>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

这里注意一手resources下面的的扫描，不然写在java资源下面的xml文件会扫描不到。

配置mvc，springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
">

    <!--注解扫描器-->
    <context:component-scan base-package="com"></context:component-scan>

    <!--mvc注解驱动-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

之后便是整合的主要配置文件application-common.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

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


    <!--连接池数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="user" value="${user}"></property>
        <property name="password" value="${password}"></property>
        <property name="jdbcUrl" value="${url}"></property>
        <property name="driverClass" value="${driverClass}"></property>
        <property name="maxPoolSize" value="${maxPoolSize}"></property>
        <property name="initialPoolSize" value="${initPoolSize}"></property>
    </bean>

    <!--sqlsessionfacotory工厂-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.model"></property>
        <property name="mapperLocations" value="classpath:com/model/*.xml"></property>
    </bean>

    <!--接口扫描器-->
    <bean id="configurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.mapper"></property>
    </bean>

    <!--事物管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--切面-->
    <tx:advice transaction-manager="transactionManager" id="advice">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="del*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="sel*" read-only="true"/>
            <tx:method name="*" read-only="true"></tx:method>
        </tx:attributes>
    </tx:advice>

    <!--切点配置-->
    <aop:config>
        <aop:pointcut id="putcut" expression="execution(* com.services.*.*(..))"></aop:pointcut>
        <aop:advisor advice-ref="advice" pointcut-ref="putcut"></aop:advisor>
    </aop:config>

</beans>

Mybatis实体映射文件EmpMapper与EmpMapper.XML文件：

EmpMapper：

package com.mapper;

import com.model.Sy_Emp;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("empMapper")
public interface EmpMapper {
    public List<Sy_Emp> selAll();
    public Sy_Emp selById(int id);
    public void addSyEmp(Sy_Emp emp);
    public void delSyEmp(int id);
    public void updateSyEmp(Sy_Emp emp);
    public Sy_Emp loginEmp(Sy_Emp emp);
}

EmpMapper.xml:

<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.mapper.EmpMapper">
    <select id="selAll" resultType="Sy_Emp">
        select * from sy_emp
    </select>

    <select id="selById" parameterType="int" resultType="Sy_Emp">
        select * from sy_emp where id=#{id}
    </select>

    <insert id="addSyEmp" parameterType="Sy_Emp" >
        insert into sy_emp(empname,empno,pwd,remark)values(#{empname},#{empno},#{pwd},#{remark});
    </insert>

    <delete id="delSyEmp" parameterType="int" >
        delete from sy_emp where id=#{id}
    </delete>

    <update id="updateSyEmp" parameterType="Sy_Emp">
        update sy_emp set empname=#{empname},empno=#{empno},pwd=#{pwd},remark=#{remark} where id=#{id}
    </update>

    <select id="loginEmp" parameterType="Sy_Emp" resultType="Sy_Emp">
        select * from sy_emp where empno=#{empno} and pwd=#{pwd}
    </select>

</mapper>

Ok!到这里MyBatis就配置完成
之后是事物层与Controller的对象注入了

TestController:

package com.controller;


import com.model.Sy_Emp;
import com.services.ISyEmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class TestController {

    @Autowired
    private ISyEmpService empService;


    @RequestMapping("test")
    public String test(){
        for (Sy_Emp emp : empService.selAll()) {
            System.out.println(emp);
        }
        return "success";
    }


}

EmpServiceImpl:

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package com.services;

import com.mapper.EmpMapper;
import com.model.Sy_Emp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("empService")
public class EmpServiceImpl implements ISyEmpService {

    @Autowired
    private EmpMapper empMapper;
    @Override
    public List<Sy_Emp> selAll() {
        return empMapper.selAll();
    }

    @Override
    public Sy_Emp selById(int id) {
        return empMapper.selById(id);
    }

    @Override
    public void addSyEmp(Sy_Emp emp) {
            empMapper.addSyEmp(emp);
    }

    @Override
    public void delSyEmp(int id) {
            empMapper.delSyEmp(id);
    }

    @Override
    public void updateSyEmp(Sy_Emp emp) {
            empMapper.updateSyEmp(emp);
    }

    @Override
    public Sy_Emp loginEmp(Sy_Emp emp) {
        return empMapper.loginEmp(emp);
    }
}

注意注解service的命名与@Autowired
如果不行可以采用手动注入的方式：@Resource(name = “usersService”,type = com.ssm.services.impl.UsersServiceImpl.class)

这样基本的整合就已经完成了，最后就是web.xml的配置：

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

<!--加载整合配置的xml文件-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationConfig-common.xml</param-value>
  </context-param>
  
  <!---spring的核心监听器-->
 <listener>
   <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>
  
  
  <!--springmvc的servlet配置-->
  <servlet>
    <servlet-name>springmvc</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>
  </servlet>


  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>*.action</url-pattern>
  </servlet-mapping>


</web-app>

这样就Ok了！

SSM整合（spring+mvc+mybatis）

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