easy-rules 规则引擎基本使用

缺乏、安全感 2022-02-24 06:18 1016阅读 0赞

规则引擎官网地址：[https://github.com/j-easy/easy-rules][https_github.com_j-easy_easy-rules]

GITHUB官网Rules的Readme: [https://github.com/j-easy/easy-rules/blob/master/README.md][https_github.com_j-easy_easy-rules_blob_master_README.md]

一个朋友的源码解读：[https://blog.csdn.net/u013817349/article/details/78088105][https_blog.csdn.net_u013817349_article_details_78088105]

package cn.wcuu.test;
    
    import org.jeasy.rules.annotation.Fact;
    import org.jeasy.rules.annotation.Rule;
    import org.jeasy.rules.annotation.Condition;
    import org.jeasy.rules.annotation.Action;
     
    @Rule(name = "ruleValidate", description = "this is description")
    public class RuleValidate {
     
        /*@Condition
        public boolean when() {
        	// condition 条件
            return true;
        }*/
        
        @Condition
        public boolean itRains(@Fact("rain") boolean rain) {
            return rain;
        }
        
        @Action
        public void then() throws Exception {
            System.out.println("validate true");
        }
     
    }

package cn.wcuu.test;
    
    import org.jeasy.rules.api.Facts;
    import org.jeasy.rules.api.Rules;
    import org.jeasy.rules.api.RulesEngine;
    import org.jeasy.rules.core.DefaultRulesEngine;
     
    public class Start 
    {
        public static void main( String[] args )
        {
        	// 初始化 facts
            Facts facts = new Facts();
            facts.put("rain", true);
            
            // 初始化rules规则
            Rules rules = new Rules();
            rules.register(new RuleValidate());
     
            // 初始化rulesEngine规则引擎，并fire启用它
            RulesEngine rulesEngine = new DefaultRulesEngine();
            rulesEngine.fire(rules, facts);
        }
    }

以上，谢谢

[https_github.com_j-easy_easy-rules]: https://github.com/j-easy/easy-rules
[https_github.com_j-easy_easy-rules_blob_master_README.md]: https://github.com/j-easy/easy-rules/blob/master/README.md
[https_blog.csdn.net_u013817349_article_details_78088105]: https://blog.csdn.net/u013817349/article/details/78088105