[error record] file search strategy in groovy project (src/main/groovy/script.groovy needs to be used in the main function | groovy script directly uses the relative path of code)

One 、 Error message

---

stay Java Class , call Groovy Script , The following error occurred ;

java.io.FileNotFoundException: Y:\002_WorkSpace\003_IDEA\Groovy_Demo\Script.groovy (Y:\002_WorkSpace\003_IDEA\Groovy_Demo\Script.groovy)	at groovy.lang.GroovyCodeSource.<init>(GroovyCodeSource.java:108)	at groovy.lang.GroovyShell.evaluate(GroovyShell.java:470)	at JavaClass.startScript(JavaClass.java:17)	at JavaClass.main(JavaClass.java:22)

Two 、 Solution

---

Groovy_Demo Is the name of the project root directory ;

The mistake itself is simple , But it involves Java And Groovy Different path finding mechanisms ;

Java class JavaClass be located Groovy_Demo\src\main\groovy Under the table of contents , To be in the right place Java Call middle note in class Script.groovy Script ;

The full path must be used here “src/main/groovy/Script.groovy” , To find “Script.groovy” Script ;

Java In the class Groovy Script , Need to use “src/main/groovy/Script.groovy” route ;

import groovy.lang.Binding;import groovy.lang.GroovyShell;import java.io.File;import java.io.IOException;public class JavaClass { 
        public void startScript() throws IOException { 
            //  Notice that you create  groovy.lang.Binding        Binding binding = new Binding();        //  Set up  args  Parameter to  Binding  Medium  variable  Among members         binding.setVariable("args", new String[]{ 
    "arg0", "arg1"});        //  perform  Groovy  Script         GroovyShell shell = new GroovyShell(JavaClass.class.getClassLoader(), binding);        File file = new File("src/main/groovy/Script.groovy");        shell.evaluate(file);    }    public static void main(String[] args) { 
            try { 
                new JavaClass().startScript();        } catch (IOException e) { 
                e.printStackTrace();        }    }}

And in the Groovy Call in script Another one Groovy Script , If two Groovy The script is in the same directory , You can use relative paths directly " Script.groovy " Call ;

Reference resources 【Groovy】Groovy Script call ( Groovy Another script is invoked. Groovy Script | Binding scope binding Variable analysis | Binding class variables Member analysis ) Blog source code ;