Springboot 集成 urule

最近公司准备启动一个风险系统, 架构中用到 urule 与 flowable, 捣鼓了好几天, 踩了很多坑, 算是初步写出一个 demo, 顺手记录一下

Urule2

URule 是一款基于 RETE 算法纯 Java 的开源规则引擎产品，提供了向导式规则集、脚本式规则集、决策表、决策树、评分卡及决策流共六种类型的规则定义方式，配合基于 WEB 的设计器，可快速实现规则的定义、维护与发布。用来替换原有的 drools 规则引擎, 有一部分原因是因为 URule 自带了配置规则的 UI 界面 本例中采用 urule 客户端与服务端分离的设计

Urule Server

urule 的 Server 端, 用来配置规则 (知识包), 并暴露给客户端, 本例中知识库存储在 mysql 数据库中 springboot 的配置可以详见 URule 官方文档

“

http://wiki.bsdn.org/display/urule2/

”

1. 配置 Urule Servlet

URuleServletRegistration.java

@Component
public class URuleServletRegistration {@Beanpublic ServletRegistrationBean registerURuleServlet(){return new ServletRegistrationBean(new URuleServlet(),"/urule/*");}
}

2. 配置 urule 知识库数据源、导入配置文件

application.yml

spring:datasource:url: jdbc:mysql://127.0.0.1:3306/world?useUnicode=true&characterEncoding=utf-8driver-class-name: com.mysql.jdbc.Driverusername: rootpassword: 1234jackson:default-property-inclusion: non_nullurule:repository:databasetype: mysqldatasourcename: datasourceserver:port: 8787

Config.java

@Configuration
@ImportResource({"classpath:urule-console-context.xml"})
@PropertySource(value = {"classpath:urule-console-context.properties"})
public class Config {@Beanpublic PropertySourcesPlaceholderConfigurer propertySourceLoader() {PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();configurer.setIgnoreUnresolvablePlaceholders(true);configurer.setOrder(1);return configurer;}@Bean@ConfigurationProperties(prefix = "spring.datasource")public DataSource datasource() {return DataSourceBuilder.create().build();}
}

3. 启动 Application 类

Application.java

@SpringBootApplication
public class Application {public static void main(String[] args) {SpringApplication.run(Application.class, args);}
}

访问地址:http://localhost:8787/urule/frame 即可看到 urule 的规则配置页面

Urule Client

Urule 的客户端, 即调用规则的一方

1. 配置 urule 知识库地址

application.yml

urule:resporityServerUrl: http://localhost:8787knowledgeUpdateCycle: 1server:port: 7878

2. 引入 urule 配置文件

RuleConfig.java

@Configuration
@ImportResource({"classpath:urule-core-context.xml"})
public class RuleConfig {@Beanpublic PropertySourcesPlaceholderConfigurer propertySourceLoader() {PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();configurer.setIgnoreUnresolvablePlaceholders(true);configurer.setOrder(1);return configurer;}
}

3. 配置 KnowledgePackageReceiverServlet

此 Servlet 用于接收 Urule 服务端发布的知识包 (不想用这个功能可以不配)

URuleServletRegistration.java

@Component
public class URuleServletRegistration {@Beanpublic ServletRegistrationBean registerURuleServlet(){return new ServletRegistrationBean(new KnowledgePackageReceiverServlet(),"/knowledgepackagereceiver");}
}

4. 启动 Application 类

RuleApplication.java

@SpringBootApplication
public class RuleApplication {public static void main(String[] args) {SpringApplication.run(RuleApplication.class, args);}
}

到这里 Urule 的服务端和客户端就都配置完了。

测试规则

由于嫌官方文档的 sample 太麻烦, 这里我自己写了个简单的规则作为测试用途

1. 添加规则 & 发布

配置参数

配置规则

大于 50 的数会乘以 10, 小于 50 的数会除以 2

配置推送客户端

发布知识包

2. 编写 Controller 测试

RuleController.java

@RestController
public class RuleController {@RequestMapping("rule")public String rule(@RequestParam String data) throws IOException {//创建一个KnowledgeSession对象KnowledgeService knowledgeService = (KnowledgeService) Utils.getApplicationContext().getBean(KnowledgeService.BEAN_ID);KnowledgePackage knowledgePackage = knowledgeService.getKnowledge("aaa/bag");KnowledgeSession session = KnowledgeSessionFactory.newKnowledgeSession(knowledgePackage);Integer integer = Integer.valueOf(data);Map<String, Object> param = new HashMap();param.put("var", integer);session.fireRules(param);Integer result = (Integer) session.getParameter("var");return String.valueOf(result);}
}

访问 http://localhost:7878/rule?data=50 和 http://localhost:7878/rule?data=40可以看到页面上分别打印 500 和 20, 执行规则成功

源码地址

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https://github.com/worstEzreal/urule_springboot

”

作者：worstezreal

来源链接：

https://blog.csdn.net/worstezreal/article/details/78968710