HTTP Status 500 - Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): cn.e3mall.mapper.TbItemMapper.selectByExample

此异常的原因是由于mapper接口编译后在同一个目录下没有找到mapper映射文件而出现的。由于maven工程在默认情况下src/main/java目录下的mapper文件是不发布到target目录下的。

只要让mapper映射文件编译后也到src/main/java目录下就行了

在工程pom文件里添加如下配置：

<build>

            <resources>

            <resource>

                <directory>src/main/java</directory>

                <includes>

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

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

                </includes>

                <filtering>false</filtering>

            </resource>

            <resource>

                <directory>src/main/resources</directory>

                <includes>

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

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

                </includes>

                <filtering>false</filtering>

            </resource>

        </resources>

      </build>

这样两个文件夹都可以作为资源文件夹。