今天在使用ssm框架進行ajax使用測試的時候，copy了教學視訊的程式碼，程式結構如下：

sping的關於mybatis的配置語句如下：

<!-- mapper的加強————————1.配置SqlSessionFactory -->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
    <!-- 設定資料來源 -->
    <property name="dataSource" ref="dataSource" />
    <!-- 設定MyBatis核心配置檔案 -->
    <property name="configLocation" value="classpath:SqlMapConfig.xml" />
</bean>
<!-- ———————————————————2.配置Mapper掃描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <!-- 設定Mapper掃描包 -->
    <property name="basePackage" value="it.laobing.mapper" />
</bean>
 

這時執行專案，出現了Invalid bound statement (not found): 錯誤，具體錯誤資訊如下：

 嚴重: Servlet.service() for servlet [SpringMvcController] in context with path [] threw exception [Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): it.laobing.mapper.CityMapper.selectCityName] with root cause

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): it.laobing.mapper.CityMapper.selectCityName

解決方式一：

通過觀察，很明顯的發現，Invalid bound statement (not found)沒有找到的原因是mapple.xml配置檔案被從mapper包中移出來了，然而MapperScannerConfigurer類掃描的包仍舊是原來的位置，這樣，CityMappers.xml就無法掃描到了，程式就會報錯，解決辦法是，要麼將CityMappers.xml放回到定義好的掃描包下，要麼在SqlMapConfig.xml中，調價mappers語句，即

<mappers>
    <mapper resource="CityMappers.xml"/>
</mappers>

如此，問題就解決了 

解決方式二：

在pom中新增如下語句：

1. <resources>

2. <resource>

3. <directory>src/main/java</directory>

4. <includes>

5. <include>**/*.properties</include>

6. <include>**/*.xml</include>

7. </includes>

8. <filtering>false</filtering>

9. </resource>

10. <resource>

11. <directory>src/main/resources</directory>

12. <includes>

13. <include>**/*.properties</include>

14. <include>**/*.xml</include>

15. </includes>

16. <filtering>false</filtering>

17. </resource>

18. </resources>