<!--Groovy腳本依賴-->
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy</artifactId>
            <version>2.5.14</version>
        </dependency>

public interface CallAnalysis {
     default void load() {
    }
}

package groovy

import com.example.groovy.testgroovy.task.CallAnalysis
import groovy.util.logging.Slf4j

@Slf4j
class CallAnalysisImpl implements CallAnalysis{

    @Override
    void load() {
        log.info("我被Groovy腳本加載...")
    }
}

package com.example.groovy.testgroovy.task;

import groovy.lang.GroovyClassLoader;

public class GroovyUtils {

    private final static ClassLoader classLoader = GroovyUtils.class.getClassLoader();//獲取當前類裝載器
    //ClassLoader：就是類的裝載器，它使JVM可以動態(tài)的載入Java類，JVM并不需要知道從什么地方（本地文件、網絡等）載入Java類，這些都由ClassLoader完成。

    public final static GroovyClassLoader groovyClassLoader = new GroovyClassLoader(classLoader);
    //GroovyClassLoader：負責在運行時編譯groovy源代碼為Class的工作，從而使Groovy實現(xiàn)了將groovy源代碼動態(tài)加載為Class的功能。

    /**
     * .
     * 獲取實例化對象
     * @param script groovy腳本內容
     * @param <T>
     * @return
     * @throws IllegalAccessException
     * @throws InstantiationException
     */
    public static <T> T instanceTaskGroovyScript(String script) throws IllegalAccessException, InstantiationException {
        Class taskClz = groovyClassLoader.parseClass(script);
        T instance = (T) taskClz.newInstance();
        return instance;
    }
}

package com.example.groovy.testgroovy.task;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Component;

import java.io.File;
import java.io.IOException;


@Slf4j
@Component
public class CallAnalysisGroovyTask {


    /**
     * .
     * 讀取腳本內容
     *
     * @return
     */
    public static String getGroovy() {
        String context = "";
        try {
            String path = "E:\\IDEAFile\\testgroovy\\src\\main\\resources\\groovy\\CallAnalysisImpl.groovy";
            context = FileUtils.readFileToString(new File(path));//將腳本內容轉為字符串
        } catch (IOException e) {
            log.error("file is not found[{}]", e);
        }
        return context;
    }

    /**
     * .
     * 執(zhí)行groovy腳本
     *
     * @param script
     */
    public static void execGroovy(String script) {
        try {
            CallAnalysis objClass = GroovyUtils.instanceTaskGroovyScript(script);//獲取實例對象
            objClass.load();//調用腳本方法
        } catch (Exception t) {
            log.error("execGroovy file {} error", script);
        }
    }

    /**
     * .
     * main方法
     * @param args
     */
    public static void main(String[] args) {
        System.out.println("==================");
        CallAnalysisGroovyTask task = new CallAnalysisGroovyTask();
        String script = task.getGroovy();//獲取腳本
        execGroovy(script);//實例化腳本，執(zhí)行方法
        System.out.println("==================");
    }
}

@Slf4j
class CallAnalysisImpl implements CallAnalysis {

    private int anInt = 10;
    private int bnInt = 10;

    @Override
    void load() {
        log.info("當前類:[{}]", this.getClass().getName())
        log.info("我被Groovy腳本加載...")
        log.info("計算結果:[{}]", (anInt + bnInt))
    }
}

 /**
     * .
     * 讀取腳本,進行入庫操作
     *
     * @return
     */
    @GetMapping("/saveScript")
    public String saveScript() {
        String scriptStr = callAnalysisGroovyTask.getGroovy();
        Script script = new Script();//實體類對象
        script.setScript(scriptStr);//腳本內容
        script.setRuleId("1");//規(guī)則id
        script.setScriptName("演示一");//腳本名稱
        service.save(script);
        return "添加成功";
    }


    /**
     * .
     * 從數(shù)據(jù)庫表中,動態(tài)獲取腳本
     *
     * @param ruleId 規(guī)則id
     * @return 腳本內容
     */
    @GetMapping("/groovy")
    public String groovy(final String ruleId) {
        Script scr = scriptService.findScriptByRuleId(ruleId);//根據(jù)規(guī)則id查詢
        String scriptStr = scr.getScript();
        callAnalysisGroovyTask.execGroovy(scriptStr);
        return scriptStr;
    }