使用springboot打包后的文件读取方式

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

ClassPathResource classPathResource = new ClassPathResource(path);
InputStream inputStream = classPathResource.getInputStream();
// 流获取到了就可以做自己想要的读取操作了

String path = "test.txt";
ClassPathResource classPathResource = new ClassPathResource(path);
// 我们要将文件复制到服务器的某个目录
String targetPath = "/app/file/test.txt";
// 通过原始文件流复制文件
Files.copy(classPathResource.getInputStream(), Paths.get(targetPath ), StandardCopyOption.REPLACE_EXISTING);
// 然后通过复制的文件进行操作
new RandomAccessFile(targetPath, "r");

Document document = reader.read(ResourceUtils.getURL("classpath:").getPath() + "xmlTemplate.xml");

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

        ClassPathResource resource = new ClassPathResource("xmlTemplate.xml");
        Document document = reader.read(resource.getInputStream());