我能够在运行时成功地在 Java 中编译 Groovy 并将其存储在数据库中并将其提取出来。如果 Groovy 类具有内部类或内部枚举,我将无法编译它。有没有人成功编译过这样的 Groovy 代码并包含内部类/枚举并能够通过类名提取脚本?
例如,我想加载下面显示的包含内部类的“测试”脚本并在运行时运行该脚本。
编译器代码:
public byte[] compileGroovyScript(final String className, final String script) {
byte[] compiledScriptBytes = null;
CompilationUnit compileUnit = new CompilationUnit();
compileUnit.addSource(className, script);
compileUnit.compile(Phases.CLASS_GENERATION);
for (Object compileClass : compileUnit.getClasses()) {
GroovyClass groovyClass = (GroovyClass) compileClass;
compiledScriptBytes = groovyClass.getBytes();
}
return compiledScriptBytes;
}
提取脚本的代码:
public Class getGroovyScript(final String className, final byte[] script) {
Class clazz = null;
try (GroovyClassLoader classLoader = new GroovyClassLoader(this.getClass().getClassLoader())) {
clazz = classLoader.defineClass(className, script);
} catch (IOException e) {
} catch (Exception e) {
}
return clazz;
}
运行脚本的代码:
Class groovyClass = app.getGroovyScript(className, compiledScript);
TestScript script = (TestScript) groovyClass.newInstance();
System.out.println(script.getMessage());
Groovy 脚本:
import com.groovy.groovy.TestScript
class Test implements TestScript {
String getMessage() {
[1..10].each(){
println it
}
return "Jello"
}
}