No files found for KieBase defaultKieBase - Drool-8.33.0.Final - drools

Question

xls format`I am developing a spring boot restful service which need to use the Business Rule Management System. I have chosen the drools. Chosen the latest version.
I am using spring boot 2.7.7 version, drools version 8.33.0.Final & java 17 version.
Issue: I am not able to process the rules when I add in the .xlsx or .xls or .csv format.
I have tried with different options, but not working with .xlsx or .xls or .csv format. Any suggestion is welcome.
Warning error message in console:
No files found for KieBase defaultKieBase
POM.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.codeusingjava</groupId>
<artifactId>boot-drools</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>boot-drools</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
<drools.version>8.33.0.Final</drools.version>
<!-- <drools.version>8.15.0.Beta</drools.version> -->
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-mvel</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-decisiontables</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-ci</artifactId>
<version>${drools.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Drools Configuration:
import org.kie.api.KieServices;
import org.kie.api.builder.KieBuilder;
import org.kie.api.builder.KieFileSystem;
import org.kie.api.builder.KieModule;
import org.kie.api.runtime.KieContainer;
import org.kie.internal.io.ResourceFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
#Configuration
public class DroolsConfiguration {
private final KieServices kieServices = KieServices.Factory.get();
#Bean
public KieContainer kieContainer() {
KieContainer kieCont = null;
try {
KieFileSystem kieFileSystem = kieServices.newKieFileSystem();
kieFileSystem.write(ResourceFactory.newClassPathResource("rules/discount.xlsx"));
KieBuilder kb = kieServices.newKieBuilder(kieFileSystem);
kb.buildAll();
KieModule kieModule = kb.getKieModule();
kieCont = kieServices.newKieContainer(kieModule.getReleaseId());
}catch(Exception exception) {
exception.printStackTrace();
}
return kieCont;
}
}
DepositRateCalculator.java
package com.codeusingjava.bootdrools.controller;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.codeusingjava.bootdrools.model.DepositRequest;
#RestController
public class DepositRateController {
#Autowired
private KieContainer kieContainer;
#RequestMapping(value = "/getInterestRate", method = RequestMethod.GET, produces = "application/json")
public String getInterest(#RequestParam(required = true) String loanType,
#RequestParam(required = true) Integer durationInYear, #RequestParam(required = true) Integer age) {
KieSession kieSession = kieContainer.newKieSession();
DepositRequest depositRequest = new DepositRequest(loanType, durationInYear, age);
kieSession.insert(depositRequest);
kieSession.fireAllRules();
kieSession.dispose();
return "The interest rate for this application is " + depositRequest.getInterestRate();
}
}
DepositRequest.java
package com.codeusingjava.bootdrools.model;
public class DepositRequest {
private String loanType;
private Integer durationInYear;
private Integer age;
private String interestRate;
public DepositRequest(String loanType, Integer durationInYear, Integer age) {
super();
this.loanType = loanType;
this.durationInYear = durationInYear;
this.age = age;
}
public String getLoanType() {
return loanType;
}
public void setLoanType(String loanType) {
this.loanType = loanType;
}
public Integer getDurationInYear() {
return durationInYear;
}
public void setDurationInYear(Integer durationInYear) {
this.durationInYear = durationInYear;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getInterestRate() {
return interestRate;
}
public void setInterestRate(String interestRate) {
this.interestRate = interestRate;
}
}
Console:
Tomcat initialized with port(s): 8080 (http)
2023-02-17 13:20:01.551 INFO 19264 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2023-02-17 13:20:01.551 INFO 19264 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.70]
2023-02-17 13:20:01.955 INFO 19264 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2023-02-17 13:20:01.955 INFO 19264 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1006 ms
**2023-02-17 13:20:02.891 WARN 19264 --- [ restartedMain] o.d.c.kie.builder.impl.KieProject : No files found for KieBase defaultKieBase
2023-02-17 13:20:03.073 INFO 19264 --- [** restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2023-02-17 13:20:03.099 INFO 19264 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2023-02-17 13:20:03.105 INFO 19264 --- [ restartedMain] c.c.bootdrools.BootDroolsApplication : Started BootDroolsApplication in 2.433 seconds (JVM running for 3.26)`
Tested URL: localhost:8080/getInterestRate?loanType=Fixed&age=45&durationInYear=1