spring整合Mybatis

 spring整合Mybatis

 思想： 整合一定不是两个框架jar包的简单的堆砌 

        真正的思想是Spring接管Mybatis框架的一部分工作 

   现在通过案例来演示  

  数据库

按照数据库建立实体类 

public class book {

    private Integer bid;

    private  String bname;

    private Integer bprice;

    public Integer getBid() {
        return bid;
    }

    public void setBid(Integer bid) {
        this.bid = bid;
    }

    public String getBname() {
        return bname;
    }

    public void setBname(String bname) {
        this.bname = bname;
    }

    public Integer getBprice() {
        return bprice;
    }

    public void setBprice(Integer bprice) {
        this.bprice = bprice;
    }
}

现在开始就需要 mybatis的大小配置   小配置和接口连接一下

public interface IBook {
    public  int insertbook(book bo);
}

<?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="SprMy.dao.IBook">

    <insert id="insertbook">

        insert into books(bname,bprice) VALUES(#{bname},#{bprice})

    </insert>






</mapper>

<?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>


</configuration>

  以及service层

public interface BookService {
    public  int insertbook(book bo);
 }

public class BookServiceimpl implements BookService {
    private IBook bk;

    public IBook getBk() {
        return bk;
    }

    public void setBk(IBook bk) {
        this.bk = bk;
    }

    @Transactional(isolation = Isolation.DEFAULT,propagation = Propagation.REQUIRED)
    public int insertbook(book bo) {



        return    bk.insertbook(bo);
    }
}

实现类里，有一个接口的对象，getset一下   直接调用方法就行 

现在开始spring配置 

    <bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">

    <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>

    <property name="url" value="jdbc:mysql:///newss2228"></property>

    <property name="username" value="root"></property>
    <property name="password" value=""></property>
    </bean>

数据源 

 <bean id="transation" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="datasource"></property>
    </bean>

    <tx:annotation-driven  transaction-manager="transation"></tx:annotation-driven>

事务管理 

  <bean  class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="datasource"></property>
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="SprMy.dao"></property>
     </bean>

    <bean id="service" class="SprMy.service.impl.BookServiceimpl">
        <property name="bk" ref="IBook"></property>
    </bean>

<property name="configLocation" value="classpath:mybatis-config.xml"></property>    这是大配置文件名  

 <property name="basePackage" value="SprMy.dao"></property>   这是接口的包 

 <property name="bk" ref="IBook"></property>  连接上面的接口，由于接口不能不能创建bean，所以，
   这里就写接口的名字就行，报出错误不用管 ，有命名规则，I开头用原来的名，不是的话用小写的名。
 
  在webxml中加入以下代码，提高一下性能 

 <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:application-06.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

  <param-value>classpath:application-06.xml</param-value> 这是spring的配置名 
现在看使用 
在jsp中使用 

   request.setCharacterEncoding("UTF-8");

               String name=request.getParameter("bookname");

               String price=request.getParameter("bookprice");

               Integer pr=Integer.parseInt(price);

               String author=request.getParameter("bookauthor");

        book book=new book();

        book.setBname(name);
        book.setBprice(pr);

        ApplicationContext  context= WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());

        BookService service = (BookService) context.getBean("service");

        int i = service.insertbook(book);

        if (i>0){

            request.getRequestDispatcher("/insert.jsp").forward(request,response);

        }else{
            response.sendRedirect("/insert.jsp");
        }

现在给一下页面 

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

<h1>添加图书</h1>
<form action="/BooknewServlet" method="post">
    图书名称：<input name="bookname"/>
    图书作者：<input name="bookauthor"/>
    图书价格：<input name="bookprice"/>
    <input type="submit" value="添加"/>
</form>



</body>
</html>

这就是整合的一个案例了，通过这个学习，我们就能认识整合