ssm整合

 

ssm整合

10.4.1创建项目

新建项目后规划好各层的包。

10.4.2导入包

 

10.4.3整合spring与mybatis

调整spring与mybatis配置文件

10.4.4创建、编写配置文件：

 

 
myBatis-config.xml文件

<?xmlversion="1.0"encoding="UTF-8"?>
<!DOCTYPEconfiguration
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>
      <typeAliastype="cn.itcast.entity.Dept" alias="Dept" />
</typeAliases>
 
   <mappers>
      <mapperresource="cn/itcast/entity/DeptMapper.xml" />
   </mappers>
      -->
</configuration>

 
applicationContext.xml
 

<?xmlversion="1.0"encoding="UTF-8"?>
<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"
   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/tx    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd    http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.2.xsd">  
  
   <!-- 配置数据源，记得去掉myBatis-config.xml的数据源相关配置 -->
   <beanid="dataSource"class="com.mchange.v2.c3p0.ComboPooledDataSource">  
     
      <propertyname="driverClass"value="com.mysql.jdbc.Driver"/>
      <propertyname="jdbcUrl"value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8"/>
      <propertyname="user"value="root"/>
      <propertyname="password"value="root"/>     

   </bean>
   <!-- 配置session工厂 -->
   <beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">
      <propertyname="dataSource"ref="dataSource"/>
      <propertyname="configLocation"value="classpath:myBatis-config.xml"/>

   </bean>
  
   <!-- 配置事务管理器,管理数据源事务处理-->
   <beanid="transactionMana
4000
ger"class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      <propertyname="dataSource"ref="dataSource"/>
   </bean>
   <!-- 配置事务通知 -->
   <tx:adviceid="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:methodname="insert*" propagation="REQUIRED" rollback-for="Exception"/>
         <tx:methodname="update*" propagation="REQUIRED" rollback-for="Exception"/>
         <tx:methodname="delete*" propagation="REQUIRED" rollback-for="Exception"/>
         <tx:methodname="*"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
-->
   <aop:config>
      <aop:advisoradvice-ref="advice"pointcut="execution(*
cn.itcast.scm.dao.impl.*.*(..))"/>
   </aop:config>
   <!-- 配置SessionTemplate，已封装了繁琐的数据操作-->
   <beanid="sqlSessionTemplate"class="org.mybatis.spring.SqlSessionTemplate">
      <constructor-argname="sqlSessionFactory"ref="sqlSessionFactory"/>    
   </bean>
  
   <context:component-scanbase-package="*"/>
     
</beans>

 

10.4.5编写实体及sql映射文件

l  如没有建库表，先建库表,可参考如下sql:

drop databaseif
exists mybatis;
create databasemybatis
CHARACTERSET UTF8;
use mybatis;
 
create table dept(
   dept_id int
primary key auto_increment,
   dept_name varchar(50),
   dept_address varchar(50)
);
 
 
insert into dept(dept_name,dept_address)values('1','1');
insert into dept(dept_name,dept_address)values('2','2');
insert into dept(dept_name,dept_address)values('3','3');
select * from dept;

l  编写实体类

 

public
class Dept implementsSerializable {
   private IntegerdeptId;
   private StringdeptName;
   private StringdeptAddress;
   public Integer getDeptId() {
      return
deptId;
   }
   public
void setDeptId(IntegerdeptId) {
      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 +
"]";
   }
  
}

 

 

l  sql映射文件，并将相关信息映射到mybatis-config.xml文件。

 

<?xmlversion="1.0"encoding="UTF-8"?>
<!DOCTYPEmapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 
<mappernamespace="cn.itcast.entity.DeptMapper">
   <resultMaptype="Dept"id="deptResultMap">
      <idproperty="deptId"column="dept_id"/>
      <resultproperty="deptName"column="dept_name"/>
      <resultproperty="deptAddress"column="dept_address"/>
   </resultMap>
   <!-- id和命名空间用来定位SQL语句，parameterType表示参数的类型，resultMap返回类型
-->
   <selectid="selectDept"parameterType="Integer"resultMap="deptResultMap">
      <!--参数的写法#{deptID} -->
      select* from dept where dept_id=#{deptID}
   </select>
 
   <insertid="insertDept"parameterType="Dept">
      insertinto dept(dept_name,dept_address) values(#{deptName},#{deptAddress});
   </insert>
 
</mapper>

 

myBatis-config.xml文件修改后为如下内容

 

<?xmlversion="1.0"encoding="UTF-8"?><
124c6
/span>
<!DOCTYPEconfiguration
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>
      <typeAliastype="cn.itcast.entity.Dept" alias="Dept"/>
</typeAliases>
   <mappers>
      <mapperresource="cn/itcast/entity/DeptMapper.xml" />
   </mappers>     
</configuration>

 

 

10.4.6编写Dao接口及实现

DeptDaoImpl.java
 

@Repository("deptDao")
public
class DeptDaoImpl{
  
   @Resource
   private SqlSessionTemplatesqlSessionTemplate;
  
   /**
    * 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){
      Deptdept=   sqlSessionTemplate.selectOne("cn.itcast.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);
         returnsqlSessionTemplate.insert("cn.itcast.entity.DeptMapper.insertDept", dept);      
   }
}

 

10.4.7测试spring与mybatis整合

 

public
class TestDeptDao {
 
   //@Resource //这里没法使用，后继版本有其它方式可以注入
   static
private DeptDaoImpl deptDao;
   @BeforeClass
   public
static void setUpBeforeClass()throws Exception {
      ApplicationContextcontext =new ClassPathXmlApplicationContext("applicationContext.xml");
      deptDao=(DeptDaoImpl) context.getBean("deptDao");
   }
 
   @AfterClass
   public
static void tearDownAfterClass()throws Exception {
   }
 
   @Test
   public
void testSelectDept() {
      System.out.println(deptDao.selectDept(1));
   }
 
   @Test
   public
void testInsertDept() {
      Deptdept=new Dept();
      //dept.setDeptId(117);
      dept.setDeptName("name117");
      dept.setDeptAddress("address117");
      System.out.println("受影响行数："+deptDao.insertDept(dept));
   }
}

 

10.4.8整合springmvc

修改web.xml文件，加入springmvc相关信息，编写 控制器类及相关jsp 文件

l  spring-mvc.xml

 

<?xmlversion="1.0"encoding="UTF-8"?>
<beansxmlns="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/beanshttp://www.springframework.org/schema/beans/spring-beans-3.2.xsd
   http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.2.xsd    http://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd    ">
        
   <mvc:annotation-driven></mvc:annotation-driven>
   <context:component-scanbase-package="*"/>
</beans>

 

l  web.xml文件配置

<?xmlversion="1.0"encoding="UTF-8"?>
<web-appversion="3.0"
   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">   <display-name></display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
 
  <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>
  <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>
   <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>
  
</web-app>

 

l  编写控制器类

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

 

l  缩写跳转页面

/jsp/main.jsp

 

<%@
page language="java"import="java.util.*"pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
 thisis main jsp
</body>
</html>

 

10.4.9测试ssi整合

 

缩写测试页面

index.jsp

 

<%@
page language="java"import="java.util.*"pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
   <formaction="dept/insert.action"method="post">
      名称：<inputtype="text" name="deptName"><br>
      地址：<inputtype="text"name="deptAddress"><br>
      <inputtype="submit"value="ok">
   </form>
</body>
</html>

 

10.3优化

10.3.1中文乱码

中文乱码处理，在web.xml中配置拦截器（参考前面）

 

<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>

 

10.3.2添加业务层

1).添加业务层相关包、接口及实现

接口包：cn.itcast.service

实现类包：cn.itcast.service.impl

编写接口与实现类（实现类用@Service进行注解，dao接口结合下边的配置，通过@Autowired方式注入代理实例），略。

 

 

10.3.3添加dao层接口

略

10.3.4修改applicationContext.xml与spring-mvc.xml文件

添加如下内容：

 

<!-- 把事务边界定在service层 -->
   <aop:config>
      <aop:advisoradvice-ref="advice"pointcut="execution(*
cn.itcast.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-scanbase-package="cn.itcast">
      <context:exclude-filtertype="annotation"        expression="org.springframework.stereotype.Controller"/>
   </context:component-scan>  
  
      <!-- 配置转换器，对于在basePackage设置的包（包括子包）下的接口类，如果在Mapper.xml文件中定义过，
   将被转换成spring的BEAN，在调用的地方通过@Autowired方式将可以注入接口实例-->
  
   <beanclass="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <propertyname="sqlSessionFactory"ref="sqlSessionFactory"/>
      <propertyname="basePackage"value="cn.itcast.scm.dao"/>
   </bean>

 

spring-mvc.xml

 

<!-- 扫描所有的controller但是不扫描service -->
   <context:component-scanbase-package="cn.itcast">
      <context:include-filtertype="annotation"
         expression="org.springframework.stereotype.Controller"/>
      <context:exclude-filtertype="annotation"
         expression="org.springframework.stereotype.Service"/>
   </context:component-scan>

 

10.3.4修改sql映射文件中命名空间

 

10.3.5修改各层的调用

控制器类通过业务层接口调用业务层，业务层再通过dao接口（可删除dao实现类，及测试类）获取代理对象执行相关SQL，进行数据的操作