从Maven项目资源文件夹（src / main / resources）加载excel（.xlsx / .xls）文件

Question

Here i am trying to load an excel file from resources folder(src/main/resources) of a maven project.

Folder Structure

MyWebApp
   |______src/main/java
   |           |____Test.java
   |
   |______src/main/resources
   |            |______test
   |                    |___hello.properties
   |                    |___template.xlsx
   |______target
            |___MyWebApp
                  |____WEB_INF
                         |___classes
                                |__test
                                     |__hello.properties
                                     |__template.xlsx

My Approach

//loading excel file
String resource = "/test/template.xlsx";
System.out.println(this.getClass().getResource(resource) == null); // prints true

//loading properties file
String resource = "/test/hello.properties";
System.out.println(this.getClass().getResource(resource) == null); //prints false

//I have also tried below methods
this.getClass().getClassLoader().getResourceAsStream(resource); //null
new ClassPathResource(resource).getInputStream(); //null

After doing some googling i came to know, maven filters binary contents . To over come that i modified my pom.xml to allow .xlsx , .xls file extenstions not to be filtered with this help .

pom.xml

<configuration>                
    <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
        <resources>
            <resource>
                 <directory>${basedir}/src/main/resources</directory>
                     <includes>
                         <include>**/*.xlsx</include>
                         <include>**/*.xls</include>
                     </includes>
             </resource>
         </resources>
</configuration>

I could able to load the properties file, but i could not able to load the excel file by using above approach. From my side i referred the below two links ( Rererence-1 , Reference-2 ) but no success. Please help me if you have some thoughts/ideas on this issue.

Answer 1

In the maven documentation page which you've linked in your there is said:

If you have both text files and binary files as resources it is recommended to have two separated folders . One folder src/main/resources (default) for the resources which are not filtered and another folder src/main/resources-filtered for the resources which are filtered.

So you should hold the properties and xlsx files in separate directories.

There is also an information about excluding binary files from filtering :

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-resources-plugin</artifactId>
    <version>3.0.0</version>
    <configuration>
      ...
      <nonFilteredFileExtensions>
        <nonFilteredFileExtension>pdf</nonFilteredFileExtension>
        <nonFilteredFileExtension>swf</nonFilteredFileExtension>
      </nonFilteredFileExtensions>
      ...
    </configuration>
 </plugin>