刚学mybatis   现在系统是spring + mybatis  

applicationContext.xml里面配置了Mapper 自动扫描

<bean class=”org.mybatis.spring.mapper.MapperScannerConfigurer”>

    <property name=”basePackage” value=”com.yolly.platform.*” />

</bean>

然后定义了一个userMapper，里面就只有一个方法

@Repository(value=”userMapper”)

public interface UserMapper {

    public List<User> getAll();

}

下面是userMapper.xml

<mapper namespace=”com.yolly.platform.user.mapper.UserMapper”>

    <select id=”getAll” resultType=”user”>

        select * from user

    </select>

</mapper>

下面是mybatis 配置文件

<configuration>

    <settings>

        <setting name=”cacheEnabled” value=”true” />

        </settings>

        <typeAliases>

            <typeAlias alias=”user” type=”com.yolly.platform.user.entity.User”/>

        </typeAliases>

        <mappers>

            <mapper resource=”mappers/UserMapper.xml” />

        </mappers>

</configuration>

本人业务层定义了一个接口  UserService  然后 下面是实现类

@Component(value=”userServiceImpl”)

@Transactional

public class UserServiceImpl implements UserService{

    private UserMapper userMapper;

    @Autowired

    public void setUserMapper(UserMapper userMapper) {

        this.userMapper = userMapper;

    }

    public List<User> getAll() {

        return userMapper.getAll();

    }

}

本人spring 配置文件加载完成后运行下面的代码可以获取结果

UserServiceImpl userServiceImpl = (UserServiceImpl)PlatformContext.getApplicationContext().getBean(“userServiceImpl”);

List<User> lista = userServiceImpl.getAll();

但是本人现在又写了一个类 叫UserComponent 如下：

@Component(value=”userComponent”)

public class UserComponent {

private UserService userService;

@Autowired

public void setUserService(UserService userService) {

this.userService = userService;

}

public List<User> getAll(Head head){

return userService.getAll();

}

}

本人这个UserService直接注入了

UserComponent userComponent = (UserComponent)PlatformContext.getApplicationContext().getBean(“userComponent”);

List<User> list = userComponent.getAll();

本人像这样调用的时候就不行了，只是多加了一层!

异常信息：

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.yolly.platform.user.service.UserService.getAll

at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:178)

at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:38)

at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:49)

at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:42)

at $Proxy12.getAll(Unknown Source)

at com.yolly.platform.user.component.UserComponent.getAll(UserComponent.java:25)

at com.yolly.core.main.Server$ServerHandler.messageReceived(Server.java:101)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:690)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:417)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:47)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:765)

at org.apache.mina.core.filterchain.IoFilterEvent.fire(IoFilterEvent.java:74)

at org.apache.mina.core.session.IoEvent.run(IoEvent.java:63)

at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask(OrderedThreadPoolExecutor.java:769)

at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTasks(OrderedThreadPoolExecutor.java:761)

at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.run(OrderedThreadPoolExecutor.java:703)

at java.lang.Thread.run(Thread.java:662)

Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.yolly.platform.user.service.UserService.getAll

at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:775)

at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:615)

at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:608)

at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:176)

… 16 more