Spring、Spring Boot整合Drools
阿新 • • 發佈:2021-09-16
Spring簡單整合Drools
引入依賴:
<properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> <drools.version>7.10.0.Final</drools.version> <spring.version>5.0.5.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.drools</groupId> <artifactId>drools-compiler</artifactId> <version>${drools.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.kie</groupId> <artifactId>kie-spring</artifactId> <version>${drools.version}</version> <!--注意:此處必須排除傳遞過來的依賴,否則會跟我們自己匯入的Spring jar包產生衝突--> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> </dependencies>
建立規則目錄/resources/rules,中rules目錄中建立規則檔案helloworld.drl
package helloworld
rule "rule_helloworld"
when
eval(true)
then
System.out.println("規則:rule_helloworld觸發...");
end
建立Spring配置檔案/resources/spring.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:kie="http://drools.org/schema/kie-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://drools.org/schema/kie-spring http://drools.org/schema/kie-spring.xsd"> <kie:kmodule id="kmodule"> <kie:kbase name="kbase" packages="rules"> <kie:ksession name="ksession"/> </kie:kbase> </kie:kmodule> <bean class="org.kie.spring.annotations.KModuleAnnotationPostProcessor"/> </beans>
編寫單元測試類
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:spring.xml") public class DroolsSpringTest { @KBase("kbase") private KieBase kieBase;//注入KieBase物件 @Test public void test1(){ KieSession kieSession = kieBase.newKieSession(); kieSession.fireAllRules(); kieSession.dispose(); } }
測試結果:
此外直接注入KieSession
也是可以的,不過不推薦這種方式。
@KSession("ksession")
private KieSession kieSession;
@Test
public void test2(){
kieSession.fireAllRules();
kieSession.dispose();
}
SpringBoot整合Drools
依賴:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<!--drools規則引擎-->
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>7.6.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>7.6.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-templates</artifactId>
<version>7.6.0.Final</version>
</dependency>
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-api</artifactId>
<version>7.6.0.Final</version>
</dependency>
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-spring</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</exclusion>
</exclusions>
<version>7.6.0.Final</version>
</dependency>
</dependencies>
配置類:DroolsConfig
@Configuration
public class DroolsConfig {
//指定規則檔案存放的目錄
private static final String RULES_PATH = "rules/";
private final KieServices kieServices = KieServices.Factory.get();
@Bean
@ConditionalOnMissingBean
public KieFileSystem kieFileSystem() throws IOException {
KieFileSystem kieFileSystem = kieServices.newKieFileSystem();
ResourcePatternResolver resourcePatternResolver =
new PathMatchingResourcePatternResolver();
Resource[] files =
resourcePatternResolver.getResources("classpath*:" + RULES_PATH + "*.*");
String path = null;
for (Resource file : files) {
path = RULES_PATH + file.getFilename();
kieFileSystem.write(ResourceFactory.newClassPathResource(path, "UTF-8"));
}
return kieFileSystem;
}
@Bean
@ConditionalOnMissingBean
public KieContainer kieContainer() throws IOException {
KieRepository kieRepository = kieServices.getRepository();
kieRepository.addKieModule(kieRepository::getDefaultReleaseId);
KieBuilder kieBuilder = kieServices.newKieBuilder(kieFileSystem());
kieBuilder.buildAll();
return kieServices.newKieContainer(kieRepository.getDefaultReleaseId());
}
@Bean
@ConditionalOnMissingBean
public KieBase kieBase() throws IOException {
return kieContainer().getKieBase();
}
@Bean
@ConditionalOnMissingBean
public KModuleBeanFactoryPostProcessor kiePostProcessor() {
return new KModuleBeanFactoryPostProcessor();
}
}
建立規則檔案/resources/rules/helloworld.drl
package helloworld
rule "rule_helloworld"
when
eval(true)
then
System.out.println("規則:rule_helloworld觸發...");
end
自定義runner:MyRunner
@Component
public class MyRunner implements ApplicationRunner {
@Autowired
private KieBase kieBase;
@Override
public void run(ApplicationArguments args) throws Exception {
KieSession kieSession = kieBase.newKieSession();
kieSession.fireAllRules();
kieSession.dispose();
}
}
啟動主啟動類:
@SpringBootApplication
public class DroolsApplication {
public static void main(String[] args) {
SpringApplication.run(DroolsApplication.class, args);
}
}
看到如下輸出,則整合成功。