bugfix(3.x): restore resource loading file:// and relative path funct…

lang/src/main/java/org/apache/shiro/lang/io/ResourceUtils.java

@@ -27,6 +27,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
+import java.nio.file.Paths;
 
 /**
  * Static helper methods for loading {@code Stream}-backed resources.
@@ -120,7 +121,6 @@ public static boolean resourceExists(String resourcePath) {
      * @throws IOException if there is a problem acquiring the resource at the specified path.
      */
     public static InputStream getInputStreamForPath(String resourcePath) throws IOException {
-
         URL url = getURLForPath(resourcePath);
         if (url == null) {
             throw new IOException("Resource [" + resourcePath + "] could not be found.");
@@ -135,7 +135,7 @@ public static InputStream getInputStreamForPath(String resourcePath) throws IOEx
      * ({@link #CLASSPATH_PREFIX CLASSPATH_PREFIX},
      * {@link #URL_PREFIX URL_PREFIX}, or {@link #FILE_PREFIX FILE_PREFIX}).  If the path is not prefixed by one
      * of these schemes, the path is assumed to be a file-based path that can be loaded with a
-     * call to {@link URI#create(String)}.
+     * call to {@link Paths#get(String, String...)}.
      *
      * @param resourcePath the String path representing the resource to obtain.
      * @return the URL for the specified resource.
@@ -148,8 +148,10 @@ public static URL getURLForPath(String resourcePath) throws IOException {
             url = ClassUtils.getResource(stripPrefix(resourcePath));
         } else if (resourcePath.startsWith(URL_PREFIX)) {
             url = URI.create(stripPrefix(resourcePath)).toURL();
+        } else if (resourcePath.startsWith(FILE_PREFIX)) {
+            url = Paths.get(stripPrefix(resourcePath)).toUri().toURL();
         } else {
-            url = URI.create(resourcePath).toURL();
+            url = Paths.get(resourcePath).toUri().toURL();
         }
 
         if (url == null) {

lang/src/test/java/org/apache/shiro/lang/util/ClassUtilsTest.java

@@ -20,13 +20,14 @@
 
 import org.junit.jupiter.api.Test;
 
+import java.io.IOException;
+import java.io.InputStream;
+import static org.apache.shiro.lang.io.ResourceUtils.getInputStreamForPath;
 import static org.assertj.core.api.Assertions.assertThat;
 
 class ClassUtilsTest {
-
     @Test
     void testGetPrimitiveClasses() throws UnknownClassException {
-
         assertThat(ClassUtils.forName("boolean")).isEqualTo(boolean.class);
         assertThat(ClassUtils.forName("byte")).isEqualTo(byte.class);
         assertThat(ClassUtils.forName("char")).isEqualTo(char.class);
@@ -84,4 +85,17 @@ void testGetClass() {
         assertThat(ClassUtils.forName(ClassUtilsTest.class.getName())).isEqualTo(ClassUtilsTest.class);
         assertThat(ClassUtils.forName(ClassUtilsTest[].class.getName())).isEqualTo(ClassUtilsTest[].class);
     }
+
+    @Test
+    void inputStreamFileLoading() throws IOException {
+        try (InputStream is = getInputStreamForPath("classpath:org/apache/shiro/lang/util/ClassUtilsTest.class")) {
+            assertThat(is.readAllBytes()).isNotEmpty();
+        }
+        try (InputStream is = getInputStreamForPath("target/test-classes/test-data/file.json")) {
+            assertThat(is.readAllBytes()).isNotEmpty();
+        }
+        try (InputStream is = getInputStreamForPath("file:target/test-classes/test-data/file.json")) {
+            assertThat(is.readAllBytes()).isNotEmpty();
+        }
+    }
 }

lang/src/test/resources/test-data/file.json

@@ -0,0 +1,4 @@
+{
+  "id": 1,
+  "name": "example"
+}