OSGI--Drools

通过jar的形式读取规则文件

        KieServices ks = KieServices.Factory.get();
        KieRepository kr = ks.getRepository();
        String drlFilePath = "deploy";
        String path = System.getProperty("user.dir") + File.separatorChar + drlFilePath + File.separatorChar;
        KieModule kModule = kr.addKieModule(ks.getResources().newFileSystemResource(new File(path+"drools-example-1.0.0-SNAPSHOT.jar")));
        KieModule kModule = kr.addKieModule(ks.getResources().newFileSystemResource(new File(path+getDrlFileName())));
        KieContainer kContainer = ks.newKieContainer(kModule.getReleaseId());
        KieSession ksession = kContainer.newKieSession("OutwardsPay");

        /**
        *规则数据定义
        */
         GlobalDataBean.AllThrPayList = new ArrayList(){{add("a");add("b");add("c");}};
        //支持银行列表
        GlobalDataBean.BankPayMap.put("1000",new ArrayList(){{add("a");add("b");}});
        GlobalDataBean.BankPayMap.put("1111",new ArrayList(){{add("a");add("c");}});
        GlobalDataBean.SubjectPayMap.put("two",new ArrayList(){{add("a");add("c");}});

        GlobalDataBean.ClosingPay = new ArrayList<String>(){{add("lianlian");}};


        //设置具体数据
        PaymentBean paymentBean = new PaymentBean();
        paymentBean.setOrder_id("123456789");
        paymentBean.setTo_bank_code("1000");
        paymentBean.subject="two";
        ksession.insert(paymentBean);


        //规则执行
        int count =  ksession.fireAllRules();
        ksession.dispose();

        //打印结果
        System.out.println("主体"+paymentBean.getSubject()+"指定第三方支付渠道 :"+paymentBean.getSubjectPayList());
        System.out.println("支持银行["+paymentBean.to_bank_code+"] 第三方支付渠道列表："+paymentBean.getBankPayList());

        System.out.println("停业的第三方支付渠道 :"+GlobalDataBean.ClosingPay);
        System.out.println("执行结果第三方支付渠道 :"+paymentBean.getThrPayList());

public class GlobalDataBean {


    public   static Map<String,List> SubjectPayMap = new HashMap();// 主体指定第三方支付渠道
    public static  Map<String,List> BankPayMap = new HashMap();// 第三方支付渠道支持的银行，key 银行编号，list 第三方支付渠道列表
    public  static List<String>  ClosingPay = new ArrayList<>();
    public static List<String> AllThrPayList = new ArrayList();//全部第三方支付列表

}

public class PaymentBean {

    public String order_id; // required
    public String to_bank_code; // required
    public double trans_amount; // required
    public String subject;
    public List<String> subjectPayList = new ArrayList(); //主体指定第三方支付渠道
    public List<String> bankPayList = new ArrayList();// 支持某个银行的第三方支付渠道

    private List<String> thrPayList = GlobalDataBean.AllThrPayList;

    public String getOrder_id() {
        return order_id;
    }

    public void setOrder_id(String order_id) {
        this.order_id = order_id;
    }

    public String getTo_bank_code() {
        return to_bank_code;
    }

    public void setTo_bank_code(String to_bank_code) {
        this.to_bank_code = to_bank_code;
    }

    public double getTrans_amount() {
        return trans_amount;
    }

    public void setTrans_amount(double trans_amount) {
        this.trans_amount = trans_amount;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public List<String> getSubjectPayList() {
        return subjectPayList;
    }

    public void setSubjectPayList(List<String> subjectPayList) {
        this.subjectPayList = subjectPayList;
        //
        setThrPayList(subjectPayList);
    }

    public List<String> getBankPayList() {
        return bankPayList;
    }

    public void setBankPayList(List<String> bankPayList) {
        this.bankPayList = bankPayList;
        List<String> temp = new ArrayList<>();
        //获取共同存在的支付渠道
        for(String pay : bankPayList)
        {
            if(thrPayList.contains(pay))
            {
                temp.add(pay);
            }
        }
        setThrPayList(temp);
    }

    public List<String> getThrPayList() {
        return thrPayList;
    }

    public void setThrPayList(List thrPayList) {
        this.thrPayList = thrPayList;
    }


}

2、创建规则文件drl

//==================================subject
rule "payment_subject"
   // ruleflow-group "payment_bank"
   no-loop
   lock-on-active
   salience 100
    when
      $p:PaymentBean()
      eval (GlobalDataBean.SubjectPayMap.containsKey($p.subject))
    then

       modify($p){setSubjectPayList((List)GlobalDataBean.SubjectPayMap.get($p.subject))}
end
//==================================支持银行列表
rule "payment_bank"
   // ruleflow-group "payment_bank"
   no-loop
   lock-on-active
   salience 90
    when
       $p:PaymentBean()
       if (GlobalDataBean.BankPayMap.containsKey($p.to_bank_code)) break [addList]
    then
       $p.bankPayList = []; //全部第三方支付渠道都不支持的银行
    then[addList]
       modify($p){setBankPayList((List)GlobalDataBean.BankPayMap.get($p.to_bank_code))};
end

//=====================================支持时间段（渠道）
rule "payment_time"
   // ruleflow-group "payment_time"
   no-loop
   lock-on-active
  salience 80
    when
      $p:PaymentBean()
      $closingPay:String()  from GlobalDataBean.ClosingPay //循环处理停业第三方支付渠道
    then
       modify($p){getThrPayList().remove($closingPay)};
end

3、指向规则文件配置kmodule.xml

<?xml version="1.0" encoding="UTF-8"?>
<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule">
	<kbase name="OutwardsPay" packages="com..payment">
		<ksession name="OutwardsPay" />
	</kbase>
</kmodule>

4、这样子后，将bundle打包后放在deploy文件夹中，运行就可以执行，并得到根据规则的结果。