5.SpringMVC，Mybatis结合事务Transaction
前面讲过，Spring事务就是针对某一个方法，在头和尾环绕上一对儿事务的开始和结束语句段，方法里针对数据库的操作就成为了一个事务。具体怎么样访问数据库，是JDBC，还是Spring JDBC还是Mybatis，Spring的事务并不关心。所以mybatis这里的事务的配置和实验和前面的Spring JDBC是一样的。
例 1.5
package com;
import java.io.IOException;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloWorldController {
    @Resource
    private ILoginService loginServic;
    @RequestMapping("/helloa")
    public void helloWorld(HttpServletResponse res) throws IOException {
        loginServic.login();
        res.sendRedirect("index.jsp");
    }
}
package com;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.mapper.RegisterMapper;
@Service
public class LoginServiceImpl implements ILoginService {
    @Resource
    private RegisterMapper registerMapper;
    public void login() {
        updateRegister();
        System.out.println("successfully update 1");
        insertRegisterWrong();//duplicate key
        System.out.println("successfully insert 2");
    }   
    public void updateRegister() {
        Register registerU = new Register();
        registerU.setId(52);
        registerU.setName("bbb2");
        registerU.setAge(80);
        System.out.println("registerMapper.updateByPrimaryKey 的返回值是 "+registerMapper.updateByPrimaryKey(registerU));
    }
    public void insertRegisterWrong() {
        Register register = new Register();
        register.setAge(80);
        register.setId(50);
        register.setName("aaa");
        registerMapper.insert(register);    }
}
更多内容请见原文，原文转载自：https://blog.csdn.net/qq_44639795/article/details/100173346