Springboot整合Urule的方法步骤

摘要：

Urule决策引擎可简化开发校验、决策类代码，底层由java语言实现，可基于SpringBoot快速配置，因为Urule工具目前为非常用工具，网上关于SpringBoot整合Urule资料匮乏，一直自己摸索，简单的环境搭建也费了些功夫，遇到些坑，作此记录

本次记录主要记录Urule-Serve端Urule-Client端分开部署的模式，这种使用场景也会更多；嵌入式成一个项目的配置和Urule-Server端一致。

一、Urule-Server端：

1.1、 基于maven的SpringBoot基本环境搭建请参考SpringBoot教程

1.2、引入Urule相关依赖，urule-console-pro，开源版本可到https://search.maven.org

中心搜索，依赖如下：

<dependencies>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
   <groupId>com.bstek.urule</groupId>
   <artifactId>urule-console-pro</artifactId>
   <version>2.1.0</version>
   <exclusions>
    <exclusion>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-jdk14</artifactId>
    </exclusion>
   </exclusions>
  </dependency>
  <dependency>
   <groupId>javax.servlet</groupId>
   <artifactId>servlet-api</artifactId>
   <version>2.5</version>
   <scope>provided</scope>
  </dependency>
  <dependency>
   <groupId>org.mybatis.spring.boot</groupId>
   <artifactId>mybatis-spring-boot-starter</artifactId>
   <version>1.3.1</version>
  </dependency>
  <dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>druid</artifactId>
   <version>1.0.9</version>
  </dependency>
  <dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
  </dependency>
 </dependencies>

1.3、配置文件：两个，appplication.yml   ,    application.properties

appplication.yml，配置数据库信息（我们把urule项目存到数据库中）

server:
 port: 8081
spring:
 application:
 name: UruleServer
 datasource:
 name: datasource
 jdbc-url: jdbc:mysql://127.0.0.1:3306/urule?useUnicode=true&characterEncoding=utf-8
 username: root
 password: 666666
 # 使用druid数据源
 type: com.alibaba.druid.pool.DruidDataSource
 driver-class-name: com.mysql.jdbc.Driver
 filters: stat
 maxActive: 20
 initialSize: 1
 maxWait: 60000
 minIdle: 1
 timeBetweenEvictionRunsMillis: 60000
 minEvictableIdleTimeMillis: 300000
 validationQuery: select 'x'
 testWhileIdle: true
 testOnBorrow: false
 testOnReturn: false
 poolPreparedStatements: true
 maxOpenPreparedStatements: 20

注意，我这此刻DataSource下不jdbc-url而不是url。根据SpringBoot版本自行调整

application.properties,配置项目储存位置

#若为本地环境需配置此路径
#urule.repository.dir=F:/EclipsePractice/03_SpringCloud/repo4rule
#若为数据库，配置此项，两项均不配则系统指定默认地址
urule.repository.databasetype=mysql
urule.repository.datasourcename=datasource
ignore-unresolvable=true
order=1

1.4、初始化bean

datesource

@Configuration
public class configuration {
 @Bean
 public 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();
  }
}

serverlet

@Component
public class URuleServletRegistration
{
 @Bean
 public ServletRegistrationBean<HttpServlet> registerURuleServlet()
 {
 return new ServletRegistrationBean(new URuleServlet(), new String[] { "/urule/*" });
 }
 }

1.5、启动类：

@SpringBootApplication
@ImportResource({"classpath:urule-console-context.xml"})
public class Application
{
 public static void main(String[] args)
 {
 SpringApplication.run(Application.class, args);
 }
}

二、客户端调用：

2.1、配置类

application.yml
server:
 port: 8090
spring:
 application:
 name: UruleClient
 datasource:
 name: datasource
 url: jdbc:mysql://127.0.0.1:3306/myland?useUnicode=true&characterEncoding=utf-8
 username: root
 password: 666666
 # 使用druid数据源
 type: com.alibaba.druid.pool.DruidDataSource
 driver-class-name: com.mysql.jdbc.Driver
 filters: stat
 maxActive: 20
 initialSize: 1
 maxWait: 60000
 minIdle: 1
 timeBetweenEvictionRunsMillis: 60000
 minEvictableIdleTimeMillis: 300000
 validationQuery: select 'x'
 testWhileIdle: true
 testOnBorrow: false
 testOnReturn: false
 poolPreparedStatements: true
 maxOpenPreparedStatements: 20
urule:
 ###服务端发现地址
 resporityServerUrl: http://localhost:8081
 ###knowledgeUpdateCycle为0时，不是检查缓存，每次都从服务端拉取，为1时，会先查找缓存
 knowledgeUpdateCycle: 1

2.2、初始化bean

@Configuration
public class RuleConfig {
 @Bean
 public PropertySourcesPlaceholderConfigurer propertySourceLoader() {
  PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
  configurer.setIgnoreUnresolvablePlaceholders(true);
  configurer.setOrder(1);
  return configurer;
 }
}

@Component
public class URuleServletRegistration {
 //此Servlet用于接收Urule服务端发布的知识包，使用开源版本时删除或者注释这个bean
 @Bean
 public ServletRegistrationBean registerURuleServlet(){
  return new ServletRegistrationBean(new KnowledgePackageReceiverServlet(),"/knowledgepackagereceiver");
 }
}

2.3、controller:

@RestController
public class TestController {
@RequestMapping("/rule")
 public String getRara(@RequestParam String data)throws IOException{
   KnowledgeService knowledgeService = (KnowledgeService) Utils.getApplicationContext().getBean(KnowledgeService.BEAN_ID);
//参数，Urule项目名/知识包名
   KnowledgePackage knowledgePackage = knowledgeService.getKnowledge("letasa/pare");
   KnowledgeSession session = KnowledgeSessionFactory.newKnowledgeSession(knowledgePackage);
   Integer integer = Integer.valueOf(data);
   Map<String, Object> param = new HashMap();
//参数，var，传入参数，和参数库中定义一致
   param.put("var", integer);
   session.fireRules(param);
//result，返回参数，和参数库中定义一致
   Integer result = (Integer) session.getParameter("result");
   return String.valueOf(result);
 }
}

2.4、启动类

@SpringBootApplication
@ImportResource({"classpath:urule-core-context.xml"})
public class Application {
 public static void main(String[] args) {
  SpringApplication.run(Application.class, args);
 }
}

Urule项目配置

参数库

规则

知识包及发布

注：Rrule-pro版本支持将知识包推送给具体客户端，客户端使用时先调用缓存，如无缓存则再到服务端拉去。但开源版本的Urule不支持推送，客户端只能主动到服务端拉去数据。

最后访问客户端：http://localhost:8090/rule?data=67，或者data=25，分别得到100，20.

success！

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