From 2d664814bb3e540755b69f1061d86c54f5eebb39 Mon Sep 17 00:00:00 2001
From: DayJun <2809704352@qq.com>
Date: Sun, 16 Oct 2022 15:04:49 +0800
Subject: [PATCH] fix for #385

---
 .../structure/ClassStructureImplByAsm.java    | 25 +++++++++++++------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/sandbox-core/src/main/java/com/alibaba/jvm/sandbox/core/util/matcher/structure/ClassStructureImplByAsm.java b/sandbox-core/src/main/java/com/alibaba/jvm/sandbox/core/util/matcher/structure/ClassStructureImplByAsm.java
index b4467214..d9529958 100644
--- a/sandbox-core/src/main/java/com/alibaba/jvm/sandbox/core/util/matcher/structure/ClassStructureImplByAsm.java
+++ b/sandbox-core/src/main/java/com/alibaba/jvm/sandbox/core/util/matcher/structure/ClassStructureImplByAsm.java
@@ -273,11 +273,22 @@ private boolean isBootstrapClassLoader() {
 
     // 获取资源数据流
     // 一般而言可以从loader直接获取，如果获取不到那么这个类也会能加载成功
-    // 但如果遇到来自BootstrapClassLoader的类就必须从java.lang.Object来获取
-    private InputStream getResourceAsStream(final String resourceName) {
-        return isBootstrapClassLoader()
-                ? Object.class.getResourceAsStream("/" + resourceName)
-                : loader.getResourceAsStream(resourceName);
+    // 但如果遇到来自BootstrapClassLoader的类就必须从java.lang.Object来获取，但是该方法仅限于jdk8
+    // 对于jdk >= 9的版本来说，需要先获取到相关类，然后通过这个类获取自己的resource
+    private InputStream getResourceAsStream(final String javaClassName) {
+        final String resourceName = internalClassNameToResourceName(toInternalClassName(javaClassName));
+        InputStream ins = null;
+        if(isBootstrapClassLoader()) {
+            try {
+                Class<?> clz = Class.forName(javaClassName, false, null);
+                ins = clz.getResourceAsStream("/" + resourceName);
+            } catch (ClassNotFoundException e) {
+                // pass
+            }
+        } else {
+            ins = loader.getResourceAsStream(resourceName);
+        }
+        return ins;
     }
 
     // 将内部类名称转换为资源名称
@@ -315,8 +326,8 @@ private ClassStructure newInstance(final String javaClassName) {
         if (null != existClassStructure) {
             return existClassStructure;
         } else {
-
-            final InputStream is = getResourceAsStream(internalClassNameToResourceName(toInternalClassName(javaClassName)));
+            // fix for #385
+            final InputStream is = getResourceAsStream(toJavaClassName(javaClassName));
             if (null != is) {
                 try {
                     final ClassStructure classStructure = new ClassStructureImplByAsm(is, loader);