<dependency>
    <groupId>org.codehaus.groovy</groupId>
    <artifactId>groovy-jsr223</artifactId>
    <version>3.0.6</version>
</dependency>

@Controller
@Slf4j
public class ScriptAction {
    @Autowired
    private GroovyEval groovyEval;

    @RequestMapping(value = "/script/test")
  	//入?yún)ⅲ篻roovy腳本存放絕對路徑、需要傳遞的參數(shù)
    public Object scriptTest(
            @Param(value = "path", required = true) String path,
            @Json("@requestBody") @RequestBody Map<String,Object> paramMap
            ) {
        try {
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(path), StandardCharsets.UTF_8));
            String date;
            StringBuilder stringBuilder = new StringBuilder();
            while((date = bufferedReader.readLine()) != null){
                stringBuilder.append(date).append("\n");
            }
            bufferedReader.close();
          //執(zhí)行腳本獲得結(jié)果，約定執(zhí)行的腳本方法名字為solution
            return groovyEval.evalScript(bufferedReader.toString() , "solution" , new Object[]{paramMap});
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

import com.google.gson.Gson;
import groovy.lang.GroovyClassLoader;
import groovy.lang.GroovyObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
@Component
public class GroovyEval implements ApplicationContextAware {
    private static GroovyEval groovyEval;
    private ApplicationContext applicationContext;
    public static <T> T getBean(Class<T> cls){
        return groovyEval.applicationContext.getBean(cls);
    }
    public Object evalScript(String script, String methodName, Object[] args){
        Object scriptObj = this.getScript(script);
        try {
          	//腳本執(zhí)行入口
          	//返回的數(shù)據(jù)類型在groovy腳本中自己定義即可，我這里返回的是map
            Map<String, Object> resultMap = (Map<String, Object>)((GroovyObject)scriptObj).invokeMethod(methodName, args);
            if (CollectionUtils.isEmpty(resultMap)){
                return null;
            }
            return resultMap.get("data");
        } catch (Throwable e) {
            log.error("script eval error !" , e);
        }
        return null;
    }

    private Object getScript(String script){
      	//注意?。。”镜卣{(diào)試可以不需要加入緩存機(jī)制，生產(chǎn)環(huán)境需要加入緩存
      	//加載腳本，每執(zhí)行一次new一個(gè)GroovyCodeSource
        Class<?> cls = new GroovyClassLoader().parseClass(script);
        GroovyObject groovyObject = null;
        try {
            log.info("load script!");
         groovyObject = (GroovyObject)cls.newInstance();
        } catch (IllegalAccessException | InstantiationException e) {
            log.error("load script error ! script : {}" , script , e);
        }
        return groovyObject;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        //靜態(tài)化bean
        this.applicationContext = applicationContext;
        groovyEval = this;
    }
}

class TestGroovy {
    def Map<String,Object> solution(Map<String,Object> paramMap){
        Map<String,Object> resultMap = [:];
        /** 獲取上層傳入的參數(shù) */
        Object shopCodes = paramMap.get("param");

				//業(yè)務(wù)邏輯處理。。。。。。
				resultMap.put("data", "resultData");
        return resultMap;
    }
}

@Component
public class GroovyEval implements ApplicationContextAware {
    private static final Logger LOGGER = LoggerFactory.getLogger(GroovyEval.class);
    private static final Object source = new Object();
    private static GroovyEval groovyEval;
    private ApplicationContext applicationContext;
    @Autowired
    private AlarmThresholdSettingsItemService alarmThresholdSettingsItemService;
    public static <T> T getBean(Class<T> cls){
        return groovyEval.applicationContext.getBean(cls);
    }
    private static final Cache<Object, Object> caffeine = Caffeine
            .newBuilder()
            .maximumSize(30000)
            //三天不用直接 gc
            .expireAfterAccess(72 , TimeUnit.HOURS)
            .build();
    public Map lookUp(){
        return caffeine.asMap();
    }
    public Object evalScript(String script,String methodName,Object[] args) {
        Object scriptObj = this.getScript(script);
        if(scriptObj != null){
            try{
                //統(tǒng)一返回 Map<String,Object>   { "data" : object }
                Map<String, Object> resultMap = (Map<String, Object>) ((GroovyObject) scriptObj).invokeMethod(methodName, args);
                if(CollectionUtils.isEmpty(resultMap)){
                    return null;
                }
                return resultMap.get("data");
            }catch (Throwable e){
                LOGGER.error("script eval error !" , e);
            }
        }
        return null;
    }
  	//腳本加入緩存
    private Object getScript(String script){
        //唯一標(biāo)記
        String cacheKey = DigestUtils.md5Hex(script);
        return caffeine.get(cacheKey, new Function<Object, Object>() {
            @Override
            public Object apply(Object key) {
                //避免變動(dòng)導(dǎo)致并發(fā)問題
                synchronized (source){
                    Class<?> cls = new GroovyClassLoader().parseClass(script);
                    GroovyObject gObj = null;
                    try {
                        LOGGER.info("load script !");
                        gObj = (GroovyObject) cls.newInstance();
                    } catch (InstantiationException | IllegalAccessException e) {
                        LOGGER.error("load script error ! script : {}" , script , e);
                    }
                    return gObj;
                }
            }
        });
    }
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        //靜態(tài)化 Bean
        this.applicationContext = applicationContext;
        groovyEval = this;
    }
}