Invalid bound statement (not found): mapper.studentsmapper.selectall

对于错误信息"Invalid bound statement (not found): mapper.studentsmapper.selectall"，可能是由于以下原因导致的:

1. XML文件未正确放置在mapper文件夹中。请确保将XML文件复制到项目的target/mapper文件夹中，以便正确引用。

2. Java配置文件中的包路径错误。确保在Java配置文件中正确地创建包，并将mapper映射文件放入其中。请注意，建立的包名与mapper接口的包名必须一致。

3. Maven的pom.xml文件中的资源配置不正确。请确认你的pom.xml文件中是否正确配置了资源路径，包括.properties和.xml文件的目录。可以使用以下代码示例作为参考:

   <build>
     <resources>
       <resource>
         <directory>src/main/resources</directory>
         <includes>
           <include>**/*.properties</include>
           <include>**/*.xml</include>
         </includes>
         <filtering>true</filtering>
       </resource>
       <resource>
         <directory>src/main/java</directory>
         <includes>
           <include>**/*.properties</include>
           <include>**/*.xml</include>
         </includes>
         <filtering>true</filtering>
       </resource>
     </resources>
   </build>

请检查以上这些可能导致错误的原因，并进行相应的修正。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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