ssi项目（1）环境搭建

1.环境准备

导包（jdk1.8只支持spring4.0以上的版本）

　　mysql驱动包

　　c3p0驱动包

　　mybatis包

　　spring-core、spring-aop、spring-web、spring-orm、spring-jdbc

　　jackson（spring对json的支持包）

　　mybatis_spring包

2.测试spring-mybatis整合

applicationContext.xml

   <!-- 配置数据源，记得去掉myBatis-config.xml的数据源相关配置 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl"
                  value="jdbc:mysql://localhost:3306/mybatis" />
        <property name="user" value="root" />
        <property name="password" value="juaner767" />
    </bean>
    <!-- 配置session工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:myBatis-config.xml" />
    </bean>

    <!-- 配置事务管理器,管理数据源事务处理 -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!-- 配置事务通知 -->
    <tx:advice id="advice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 默认只处理运行时异常，可加rollback-for="Exception/Throwable"等处理所有异常或包括错误 -->
            <tx:method name="insert*" propagation="REQUIRED" rollback-for="Exception" />
            <tx:method name="update*" propagation="REQUIRED" rollback-for="Exception" />
            <tx:method name="delete*" propagation="REQUIRED" rollback-for="Exception" />
            <tx:method name="*" propagation="SUPPORTS" />
        </tx:attributes>

    </tx:advice>
    <!-- 配置切面织入的范围,后边要把事务边界定在service层 -->
    <!-- 把事务边界定在service层 -->
    <aop:config>
        <aop:advisor advice-ref="advice" pointcut="execution(* com.juaner.scm.dao.impl.*.*(..))"/>
    </aop:config>
    <context:component-scan base-package="*"></context:component-scan>
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory" />
    </bean>

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>
<!-- 通过别名简化对类的使用 -->
<typeAliases>
     <typeAlias type="com.juaner.scm.entity.Dept" alias="Dept"/>
</typeAliases>
<mappers>
        <mapper resource="com/juaner/scm/entity/DeptMapper.xml" />
</mappers>
</configuration>

Dept实体及映射文件

public class Dept implements Serializable{

    private Integer deptId;
    private String deptName;
    private String deptAddress;

    public Dept(){

    }
    public Integer getDeptId() {
        return deptId;
    }

    public void setDeptId(Integer deptId) {
        this.deptId = deptId;
    }

    public String getDeptName() {
        return deptName;
    }

    public void setDeptName(String deptName) {
        this.deptName = deptName;
    }

    public String getDeptAddress() {
        return deptAddress;
    }

    public void setDeptAddress(String deptAddress) {
        this.deptAddress = deptAddress;
    }

    @Override
    public String toString() {
        return "Dept{" +
                "deptId=" + deptId +
                ", deptName='" + deptName + '\'' +
                ", deptAddress='" + deptAddress + '\'' +
                '}';
    }
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.juaner.scm.entity.DeptMapper">
    <resultMap id="deptResultMap" type="Dept">
        <id property="deptId" column="dept_id"/>
        <result property="deptName" column="dept_name"/>
        <result property="deptAddress" column="dept_address"/>
    </resultMap>
    <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">
        SELECT DEPT_ID,DEPT_NAME,DEPT_ADDRESS FROM DEPT WHERE DEPT_ID=#{deptID}
    </select>
    <insert id="insertDept" parameterType="Dept">
        INSERT INTO DEPT (DEPT_NAME,DEPT_ADDRESS) VALUES (#{deptName},#{deptAddress})
    </insert>
</mapper>

DeptDaoImpl类

@Repository("deptDao")
public class DeptDaoImpl implements DeptDao{
    @Resource
    private SqlSessionTemplate sqlSessionTemplate;

    /**
     * 根据部门编号查询部门信息
     * @param deptId 部门编号
     * @return 部门信息
     */
    public Dept selectDept(Integer deptId){
        Dept dept=    sqlSessionTemplate.selectOne("com.juaner.scm.entity.DeptMapper.selectDept", deptId);
        return dept;
    }
    /**
     * 添加部门信息
     * @param dept 部门信息
     * @return 添加成功的记录数
     */
    public int insertDept(Dept dept){
        System.out.println("------dao.dept:"+dept);
        sqlSessionTemplate.insert("com.juaner.scm.entity.DeptMapper.insertDept", dept);
//        int i =1/0;
        return 0;
    }

}

测试

    @Test
    public void test1(){
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        DeptDaoImpl deptDao = (DeptDaoImpl) context.getBean("deptDao");
        Dept dept = deptDao.selectDept(1);
        System.out.println(dept);
    }
    @Test
    public void test2(){
        Dept dept = new Dept();
        dept.setDeptName("信息部");
        dept.setDeptAddress("b3");
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        DeptDaoImpl deptDao = (DeptDaoImpl) context.getBean("deptDao");
        deptDao.insertDept(dept);
    }

3.测试spring-mvc

web.xml

   <!--配置spring监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <!--配置spring-mvc核心控制器-->
    <servlet>
        <servlet-name>mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
    <!--针对post请求的编码过滤器-->
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.2.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

    <!--同时开启json的支持-->
    <mvc:annotation-driven></mvc:annotation-driven>
    <context:component-scan base-package="*"/>
</beans>

DeptAction

@Controller
@RequestMapping("/dept")
public class DeptAction {
    @Resource
    private DeptDaoImpl deptDao;

    @RequestMapping(value="/insert")
    public String insert(Dept dept){
        System.out.println("---action.dept:"+dept);
        deptDao.insertDept(dept);
        return "forward:/jsp/main.jsp";
    }

}

index.jsp

  <form action="dept/insert.action" method="post">
    名称：<input type="text" name="deptName"><br>
    地址：<input type="text" name="deptAddress"><br>
    <input type="submit" value="ok">
  </form>

main.jsp（webRoot/jsp/main.jsp）

4.优化

对service的事务控制（需要配置applicationContext.xml和spring-mvc.xml的扫描规则，否则会产生冲突无法回滚）

    <!-- 把事务边界定在service层 -->
    <aop:config>
        <aop:advisor advice-ref="advice" pointcut="execution(* com.juaner.scm.service.impl.*.*(..))"/>
    </aop:config>
    <!-- 自动扫描组件，要把controller去除，他们是在spring-mvc.xml中配置，如果不去除会影响事务管理。   -->
    <context:component-scan base-package="com.juaner">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

spring-mvc扫描

    <!-- 扫描所有的controller 但是不扫描service -->
    <context:component-scan base-package="com.juaner">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" />
    </context:component-scan>

去掉dao实现类

扫描basePackage下的接口，如果接口的强类名与映射文件xml中的命名空间一致，spring会生成该接口的代理对象，就不用写实现类了。

spring会用接口的强类名做命名空间，方法名做sql语句id查询map文件

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
        <property name="basePackage" value="com.juaner.scm.dao"/>
    </bean>

映射文件

<mapper namespace="com.juaner.scm.dao.DeptDao">
    <resultMap id="deptResultMap" type="Dept">
        <id property="deptId" column="dept_id"/>
        <result property="deptName" column="dept_name"/>
        <result property="deptAddress" column="dept_address"/>
    </resultMap>
    <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">
        SELECT DEPT_ID,DEPT_NAME,DEPT_ADDRESS FROM DEPT WHERE DEPT_ID=#{deptID}
    </select>
    <insert id="insertDept" parameterType="Dept">
        INSERT INTO DEPT (DEPT_NAME,DEPT_ADDRESS) VALUES (#{deptName},#{deptAddress})
    </insert>

dao接口

public interface DeptDao {
    public Dept selectDept(Integer deptId);
    public int insertDept(Dept dept);
}

aciton

    @Autowired
    private DeptService deptService;

去掉myBatis-config.xml中的别名和映射文件

在applicationContext.xml中配置映射文件地址

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:myBatis-config.xml" />
        <property name="mapperLocations" value="classpath:com/juaner/scm/dao/*.xml"/>
    </bean>

配置别名，entity下的所有类都以类名作为别名

    <typeAliases>
        <package name="com.juaner.scm.entity"/>
    </typeAliases>

 5.测试json

引入jackson包jackson-core-asl-1.9.11、jackson-mapper-asl-1.9.11

spring-mvc开启对json的支持

    <mvc:annotation-driven></mvc:annotation-driven>

或在spring-mvc中配置json转换器

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
            </list>
        </property>
    </bean>

方法中添加注解@ResponseBody

    @RequestMapping("/doAjax")
    @ResponseBody
    public Object doAjax(Supplier supplier){
        System.out.println("-------doAjax.supplier"+supplier);
        supplier.setSupName("supName1");
        return supplier;
    }

jsp方法中调用

    <script type="text/javascript">
        $(function(){
            $("#buttonID").click(
                    function(){
                        var data = {"supId":1001,"supName":"name1001"};
                        $.post("${proPath}/supplier/doAjax.action",data,
                        function(json){
                            alert(json.supId+" "+json.supName);
                        });
                    }
            );
        })
    </script>

6.抽取dao、service、action、jsp