第六章(2) Drools学习 SpringMVC和Drools整合

SpringMVC和Drools的整合代码示例:
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>drools_springweb</groupId>
  <artifactId>com.itheima</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>com.itheima Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</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:此处必须排除传递过来的依赖,否则会跟我们自己导入的Spring jar包产生冲突-->
      <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>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
  </dependencies>


  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.2</version>
        <configuration>
          <!-- 指定端口 -->
          <port>80</port>
          <!-- 请求路径 -->
          <path>/</path>
        </configuration>
      </plugin>
    </plugins>
  </build>


</project>
web.xml
 <!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 指定加载的配置文件 ,通过参数contextConfigLocation加载 -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>

</web-app>
springmvc.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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <kie:kmodule id="kmodule">
        <kie:kbase name="kbase" packages="rules">
            <kie:ksession name="ksession"></kie:ksession>
        </kie:kbase>
    </kie:kmodule>

    <bean class="org.kie.spring.annotations.KModuleAnnotationPostProcessor"/>

    <!--spring批量扫描-->
    <context:component-scan base-package="com.itheima" />
    <context:annotation-config/>
    <!--springMVC注解驱动-->
    <mvc:annotation-driven/>
</beans>
helloworld.drl
package helloworld

rule "rule_helloworld"
    when
        eval(true)
    then
        System.out.println("规则:rule_helloworld触发...");
end
RuleService.java
package com.itheima.service;

import org.kie.api.KieBase;
import org.kie.api.cdi.KBase;
import org.kie.api.runtime.KieSession;
import org.springframework.stereotype.Service;

@Service
public class RuleService {
    @KBase("kbase")
    private KieBase kieBase;
    public void rule(){
        KieSession kieSession = kieBase.
        newKieSession();
        kieSession.fireAllRules();
        kieSession.dispose();
    }
}
helloControll.java
package com.itheima.controller;

import com.itheima.service.RuleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/hello")
public class HelloController {
    @Autowired
    private RuleService ruleService;

    @RequestMapping("/rule")
    public String rule(){
        ruleService.rule();
        return "OK";
    }
}
项目结构
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