Deal with spaces in file references

Fixes gh-1169

spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/PropertiesLauncher.java

@@ -25,6 +25,7 @@ import java.net.URISyntaxException;
 import java.net.URL;
 import java.net.URLClassLoader;
 import java.net.URLConnection;
+import java.net.URLDecoder;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -518,7 +519,8 @@ public class PropertiesLauncher extends Launcher {
 				}
 			}
 			else {
-				lib.add(0, new ExplodedArchive(new File(url.getFile())));
+				String filename = URLDecoder.decode(url.getFile(), "UTF-8");
+				lib.add(0, new ExplodedArchive(new File(filename)));
 			}
 		}
 	}

spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/Handler.java

@@ -23,6 +23,7 @@ import java.lang.reflect.Method;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLConnection;
+import java.net.URLDecoder;
 import java.net.URLStreamHandler;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -151,7 +152,7 @@ public class Handler extends URLStreamHandler {
 				throw new IllegalStateException("Not a file URL");
 			}
 			String path = name.substring(FILE_PROTOCOL.length());
-			File file = new File(path);
+			File file = new File(URLDecoder.decode(path, "UTF-8"));
 			Map<File, JarFile> cache = rootFileCache.get();
 			JarFile jarFile = (cache == null ? null : cache.get(file));
 			if (jarFile == null) {

spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/archive/ExplodedArchiveTests.java

@@ -23,6 +23,7 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.URL;
 import java.net.URLClassLoader;
+import java.net.URLDecoder;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Map;
@@ -106,7 +107,8 @@ public class ExplodedArchiveTests {
 	@Test
 	public void getUrl() throws Exception {
 		URL url = this.archive.getUrl();
-		assertThat(new File(url.toURI()), equalTo(new File(this.rootFolder.toURI())));
+		assertThat(new File(URLDecoder.decode(url.getFile(), "UTF-8")),
+				equalTo(this.rootFolder));
 	}
 
 	@Test

spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/jar/JarFileTests.java

@@ -97,7 +97,6 @@ public class JarFileTests {
 		assertThat(urlClassLoader.getResource("special/\u00EB.dat"), notNullValue());
 		assertThat(urlClassLoader.getResource("d/9.dat"), notNullValue());
 		jarFile.close();
-
 	}
 
 	@Test