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The following commit(s) were added to refs/heads/main by this push:
new d9c9d2b03 WW-5546 Fixes NPE when uploaded file is empty (#1263)
d9c9d2b03 is described below
commit d9c9d2b0307fe7a4126c6f00df29951c54517802
Author: Lukasz Lenart <[email protected]>
AuthorDate: Wed May 7 07:18:15 2025 +0200
WW-5546 Fixes NPE when uploaded file is empty (#1263)
---
.../interceptor/AbstractFileUploadInterceptor.java | 2 +-
.../ActionFileUploadInterceptorTest.java | 344 +++++++++++----------
2 files changed, 174 insertions(+), 172 deletions(-)
diff --git
a/core/src/main/java/org/apache/struts2/interceptor/AbstractFileUploadInterceptor.java
b/core/src/main/java/org/apache/struts2/interceptor/AbstractFileUploadInterceptor.java
index c0a1bd9d8..8d7ef49f1 100644
---
a/core/src/main/java/org/apache/struts2/interceptor/AbstractFileUploadInterceptor.java
+++
b/core/src/main/java/org/apache/struts2/interceptor/AbstractFileUploadInterceptor.java
@@ -115,7 +115,7 @@ public abstract class AbstractFileUploadInterceptor extends
AbstractInterceptor
}
// If it's null the upload failed
- if (file == null) {
+ if (file == null || file.getContent() == null) {
String errMsg = getTextMessage(action,
STRUTS_MESSAGES_ERROR_UPLOADING_KEY, new String[]{inputName});
if (validation != null) {
validation.addFieldError(inputName, errMsg);
diff --git
a/core/src/test/java/org/apache/struts2/interceptor/ActionFileUploadInterceptorTest.java
b/core/src/test/java/org/apache/struts2/interceptor/ActionFileUploadInterceptorTest.java
index b8761a8a4..26cf7e180 100644
---
a/core/src/test/java/org/apache/struts2/interceptor/ActionFileUploadInterceptorTest.java
+++
b/core/src/test/java/org/apache/struts2/interceptor/ActionFileUploadInterceptorTest.java
@@ -18,21 +18,21 @@
*/
package org.apache.struts2.interceptor;
-import org.apache.struts2.ActionContext;
-import org.apache.struts2.ActionSupport;
-import org.apache.struts2.locale.DefaultLocaleProvider;
-import org.apache.struts2.ValidationAwareSupport;
-import org.apache.struts2.mock.MockActionInvocation;
-import org.apache.struts2.mock.MockActionProxy;
-import org.apache.struts2.util.ClassLoaderUtil;
import
org.apache.commons.fileupload2.jakarta.servlet6.JakartaServletDiskFileUpload;
import
org.apache.commons.fileupload2.jakarta.servlet6.JakartaServletFileUpload;
+import org.apache.struts2.ActionContext;
+import org.apache.struts2.ActionSupport;
import org.apache.struts2.StrutsInternalTestCase;
+import org.apache.struts2.ValidationAwareSupport;
import org.apache.struts2.action.UploadedFilesAware;
import org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest;
import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper;
import org.apache.struts2.dispatcher.multipart.StrutsUploadedFile;
import org.apache.struts2.dispatcher.multipart.UploadedFile;
+import org.apache.struts2.locale.DefaultLocaleProvider;
+import org.apache.struts2.mock.MockActionInvocation;
+import org.apache.struts2.mock.MockActionProxy;
+import org.apache.struts2.util.ClassLoaderUtil;
import org.assertj.core.util.Files;
import org.springframework.mock.web.MockHttpServletRequest;
@@ -40,7 +40,6 @@ import java.io.File;
import java.net.URI;
import java.net.URL;
import java.nio.charset.StandardCharsets;
-import java.util.Collection;
import java.util.List;
import java.util.Locale;
@@ -51,53 +50,6 @@ import static org.assertj.core.api.Assertions.assertThat;
*/
public class ActionFileUploadInterceptorTest extends StrutsInternalTestCase {
- private static final UploadedFile EMPTY_FILE = new UploadedFile() {
- @Override
- public Long length() {
- return 0L;
- }
-
- @Override
- public String getName() {
- return "";
- }
-
- @Override
- public boolean isFile() {
- return false;
- }
-
- @Override
- public boolean delete() {
- return false;
- }
-
- @Override
- public String getAbsolutePath() {
- return null;
- }
-
- @Override
- public File getContent() {
- return Files.newTemporaryFile();
- }
-
- @Override
- public String getOriginalName() {
- return null;
- }
-
- @Override
- public String getContentType() {
- return null;
- }
-
- @Override
- public String getInputName() {
- return null;
- }
- };
-
private MockHttpServletRequest request;
private ActionFileUploadInterceptor interceptor;
private File tempDir;
@@ -105,16 +57,16 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
private final String htmlContent = "<html><head></head><body>html
content</body></html>";
private final String plainContent = "plain content";
private final String boundary = "simple boundary";
- private final String endline = "\r\n";
+ private final String endLine = "\r\n";
public void testAcceptFileWithEmptyAllowedTypesAndExtensions() {
// when allowed type is empty
ValidationAwareSupport validation = new ValidationAwareSupport();
- boolean ok = interceptor.acceptFile(validation, EMPTY_FILE,
"filename", "text/plain", "inputName");
+ boolean ok = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename", "text/plain",
"inputName");
- assertTrue(ok);
- assertTrue(validation.getFieldErrors().isEmpty());
- assertFalse(validation.hasErrors());
+ assertThat(ok).isTrue();
+ assertThat(validation.getFieldErrors()).isEmpty();
+ assertThat(validation.hasErrors()).isFalse();
}
public void testAcceptFileWithoutEmptyTypes() {
@@ -122,39 +74,38 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
// when file is of allowed types
ValidationAwareSupport validation = new ValidationAwareSupport();
- boolean ok = interceptor.acceptFile(validation, EMPTY_FILE,
"filename.txt", "text/plain", "inputName");
+ boolean ok = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.txt", "text/plain",
"inputName");
- assertTrue(ok);
- assertTrue(validation.getFieldErrors().isEmpty());
- assertFalse(validation.hasErrors());
+ assertThat(ok).isTrue();
+ assertThat(validation.getFieldErrors()).isEmpty();
+ assertThat(validation.hasErrors()).isFalse();
// when file is not of allowed types
validation = new ValidationAwareSupport();
- boolean notOk = interceptor.acceptFile(validation, EMPTY_FILE,
"filename.html", "text/html", "inputName");
+ boolean notOk = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.html", "text/html",
"inputName");
- assertFalse(notOk);
- assertFalse(validation.getFieldErrors().isEmpty());
- assertTrue(validation.hasErrors());
+ assertThat(notOk).isFalse();
+ assertThat(validation.getFieldErrors()).isNotEmpty();
+ assertThat(validation.hasErrors()).isTrue();
}
-
public void testAcceptFileWithWildcardContent() {
interceptor.setAllowedTypes("text/*");
ValidationAwareSupport validation = new ValidationAwareSupport();
- boolean ok = interceptor.acceptFile(validation, EMPTY_FILE,
"filename.txt", "text/plain", "inputName");
+ boolean ok = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.txt", "text/plain",
"inputName");
- assertTrue(ok);
- assertTrue(validation.getFieldErrors().isEmpty());
- assertFalse(validation.hasErrors());
+ assertThat(ok).isTrue();
+ assertThat(validation.getFieldErrors()).isEmpty();
+ assertThat(validation.hasErrors()).isFalse();
interceptor.setAllowedTypes("text/h*");
validation = new ValidationAwareSupport();
- boolean notOk = interceptor.acceptFile(validation, EMPTY_FILE,
"filename.html", "text/plain", "inputName");
+ boolean notOk = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.html", "text/plain",
"inputName");
- assertFalse(notOk);
- assertFalse(validation.getFieldErrors().isEmpty());
- assertTrue(validation.hasErrors());
+ assertThat(notOk).isFalse();
+ assertThat(validation.getFieldErrors()).isNotEmpty();
+ assertThat(validation.hasErrors()).isTrue();
}
public void testAcceptFileWithoutEmptyExtensions() {
@@ -162,48 +113,62 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
// when file is of allowed extensions
ValidationAwareSupport validation = new ValidationAwareSupport();
- boolean ok = interceptor.acceptFile(validation, EMPTY_FILE,
"filename.txt", "text/plain", "inputName");
+ boolean ok = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.txt", "text/plain",
"inputName");
- assertTrue(ok);
- assertTrue(validation.getFieldErrors().isEmpty());
- assertFalse(validation.hasErrors());
+ assertThat(ok).isTrue();
+ assertThat(validation.getFieldErrors()).isEmpty();
+ assertThat(validation.hasErrors()).isFalse();
// when file is not of allowed extensions
validation = new ValidationAwareSupport();
- boolean notOk = interceptor.acceptFile(validation, EMPTY_FILE,
"filename.html", "text/html", "inputName");
+ boolean notOk = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.html", "text/html",
"inputName");
- assertFalse(notOk);
- assertFalse(validation.getFieldErrors().isEmpty());
- assertTrue(validation.hasErrors());
+ assertThat(notOk).isFalse();
+ assertThat(validation.getFieldErrors()).isNotEmpty();
+ assertThat(validation.hasErrors()).isTrue();
- //test with multiple extensions
interceptor.setAllowedExtensions(".txt,.lol");
validation = new ValidationAwareSupport();
- ok = interceptor.acceptFile(validation, EMPTY_FILE, "filename.lol",
"text/plain", "inputName");
+ ok = interceptor.acceptFile(validation,
createTestFile(Files.newTemporaryFile()), "filename.lol", "text/plain",
"inputName");
- assertTrue(ok);
- assertTrue(validation.getFieldErrors().isEmpty());
- assertFalse(validation.hasErrors());
+ assertThat(ok).isTrue();
+ assertThat(validation.getFieldErrors()).isEmpty();
+ assertThat(validation.hasErrors()).isFalse();
}
public void testAcceptFileWithNoFile() {
- ActionFileUploadInterceptor interceptor = new
ActionFileUploadInterceptor();
- interceptor.setContainer(container);
-
interceptor.setAllowedTypes("text/plain");
// when file is not of allowed types
ValidationAwareSupport validation = new ValidationAwareSupport();
boolean notOk = interceptor.acceptFile(validation, null,
"filename.html", "text/html", "inputName");
- assertFalse(notOk);
- assertFalse(validation.getFieldErrors().isEmpty());
- assertTrue(validation.hasErrors());
- List<String> errors = validation.getFieldErrors().get("inputName");
- assertEquals(1, errors.size());
- String msg = errors.get(0);
- assertTrue(msg.startsWith("Error uploading:"));
- assertTrue(msg.indexOf("inputName") > 0);
+ assertThat(notOk).isFalse();
+ assertThat(validation.getFieldErrors()).isNotEmpty();
+ assertThat(validation.hasErrors()).isTrue();
+ assertThat(validation.getFieldErrors().get("inputName"))
+ .hasSize(1)
+ .first()
+ .asString()
+ .startsWith("Error uploading:")
+ .contains("inputName");
+ }
+
+ public void testAcceptFileWithNoContent() {
+ interceptor.setAllowedTypes("text/plain");
+
+ ValidationAwareSupport validation = new ValidationAwareSupport();
+ boolean notOk = interceptor.acceptFile(validation,
createTestFile(null), "filename.html", "text/plain", "inputName");
+
+ assertThat(notOk).isFalse();
+ assertThat(validation.getFieldErrors()).isNotEmpty();
+ assertThat(validation.hasErrors()).isTrue();
+ assertThat(validation.getFieldErrors().get("inputName"))
+ .hasSize(1)
+ .first()
+ .asString()
+ .startsWith("Error uploading:")
+ .contains("inputName");
}
public void testAcceptFileWithMaxSize() throws Exception {
@@ -214,23 +179,18 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
URL url = ClassLoaderUtil.getResource("log4j2.xml",
ActionFileUploadInterceptorTest.class);
File file = new File(new URI(url.toString()));
- assertTrue("log4j2.xml should be in src/test folder", file.exists());
+ assertThat(file).exists();
UploadedFile uploadedFile =
StrutsUploadedFile.Builder.create(file).withContentType("text/html").withOriginalName("filename").build();
boolean notOk = interceptor.acceptFile(validation, uploadedFile,
"filename", "text/html", "inputName");
- assertFalse(notOk);
- assertFalse(validation.getFieldErrors().isEmpty());
- assertTrue(validation.hasErrors());
- List<String> errors = validation.getFieldErrors().get("inputName");
- assertEquals(1, errors.size());
- String msg = errors.get(0);
- // the error message should contain at least this test
- assertThat(msg).contains(
- "The file is too large to be uploaded",
- "inputName",
- "log4j2.xml",
- "allowed mx size is 10"
- );
+ assertThat(notOk).isFalse();
+ assertThat(validation.getFieldErrors()).isNotEmpty();
+ assertThat(validation.hasErrors()).isTrue();
+ assertThat(validation.getFieldErrors().get("inputName"))
+ .hasSize(1)
+ .first()
+ .asString()
+ .contains("The file is too large to be uploaded", "inputName",
"log4j2.xml", "allowed mx size is 10");
}
public void testNoMultipartRequest() throws Exception {
@@ -246,11 +206,11 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
mai.setInvocationContext(ActionContext.getContext());
// if no multipart request it will bypass and execute it
- assertEquals("NoMultipart", interceptor.intercept(mai));
+ assertThat(interceptor.intercept(mai)).isEqualTo("NoMultipart");
}
public void testInvalidContentTypeMultipartRequest() throws Exception {
- request.setContentType("multipart/form-data"); // not a multipart
contentype
+ request.setContentType("multipart/form-data"); // not a multipart
Content-Type
request.setMethod("post");
MyFileUploadAction action = container.inject(MyFileUploadAction.class);
@@ -263,7 +223,7 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.intercept(mai);
- assertTrue(action.hasErrors());
+ assertThat(action.hasErrors()).isTrue();
}
public void testNoContentMultipartRequest() throws Exception {
@@ -284,7 +244,7 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.intercept(mai);
- assertTrue(action.hasErrors());
+ assertThat(action.hasErrors()).isTrue();
}
public void testSuccessUploadOfATextFileMultipartRequest() throws
Exception {
@@ -292,7 +252,7 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
request.setMethod("post");
request.addHeader("Content-type", "multipart/form-data;
boundary=---1234");
- // inspired by the unit tests for jakarta commons fileupload
+ // inspired by the unit tests for Jakarta Commons FileUpload
String content = ("""
-----1234\r
Content-Disposition: form-data; name="file";
filename="deleteme.txt"\r
@@ -313,14 +273,13 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.intercept(mai);
- assertFalse(action.hasErrors());
+ assertThat(action.hasErrors()).isFalse();
List<UploadedFile> files = action.getUploadFiles();
- assertNotNull(files);
- assertEquals(1, files.size());
- assertEquals("text/html", files.get(0).getContentType());
- assertNotNull("deleteme.txt", files.get(0).getOriginalName());
+ assertThat(files).isNotNull().hasSize(1);
+ assertThat(files.get(0).getContentType()).isEqualTo("text/html");
+ assertThat(files.get(0).getOriginalName()).isEqualTo("deleteme.txt");
}
/**
@@ -334,10 +293,10 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
String content = encodeTextFile("test.html", "text/plain",
plainContent) +
encodeTextFile("test1.html", "text/html", htmlContent) +
encodeTextFile("test2.html", "text/html", htmlContent) +
- endline + "--" + boundary + "--";
+ endLine + "--" + boundary + "--";
request.setContent(content.getBytes());
- assertTrue(JakartaServletDiskFileUpload.isMultipartContent(request));
+
assertThat(JakartaServletDiskFileUpload.isMultipartContent(request)).isTrue();
MyFileUploadAction action = new MyFileUploadAction();
container.inject(action);
@@ -345,17 +304,18 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
mai.setAction(action);
mai.setResultCode("success");
mai.setInvocationContext(ActionContext.getContext());
-
ActionContext.getContext().withServletRequest(createMultipartRequestMaxSize(2000));
+
ActionContext.getContext().withServletRequest(createMultipartRequestMaxFiles());
interceptor.setAllowedTypes("text/html");
interceptor.intercept(mai);
List<UploadedFile> files = action.getUploadFiles();
- assertNotNull(files);
- assertEquals("files accepted ", 2, files.size());
- assertEquals("text/html", files.get(0).getContentType());
- assertNotNull("test1.html", files.get(0).getOriginalName());
+ assertThat(files).isNotNull().hasSize(2);
+ assertThat(files.get(0).getContentType()).isEqualTo("text/html");
+ assertThat(files.get(0).getOriginalName()).isEqualTo("test1.html");
+ assertThat(files.get(1).getContentType()).isEqualTo("text/html");
+ assertThat(files.get(1).getOriginalName()).isEqualTo("test2.html");
}
public void testUnacceptedNumberOfFiles() throws Exception {
@@ -366,14 +326,14 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
encodeTextFile("test1.html", "text/html", htmlContent) +
encodeTextFile("test2.html", "text/html", htmlContent) +
encodeTextFile("test3.html", "text/html", htmlContent) +
- endline +
+ endLine +
"--" +
boundary +
"--" +
- endline;
+ endLine;
request.setContent(content.getBytes());
- assertTrue(JakartaServletFileUpload.isMultipartContent(request));
+
assertThat(JakartaServletFileUpload.isMultipartContent(request)).isTrue();
MyFileUploadAction action = new MyFileUploadAction();
container.inject(action);
@@ -386,12 +346,11 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.setAllowedTypes("text/html");
interceptor.intercept(mai);
- assertNull(action.getUploadFiles());
- assertEquals(1, action.getActionErrors().size());
- assertEquals(
- "Request exceeded allowed number of files! Permitted number of
files is: 3!",
- action.getActionErrors().iterator().next()
- );
+ assertThat(action.getUploadFiles()).isNull();
+ assertThat(action.getActionErrors())
+ .hasSize(1)
+ .first()
+ .isEqualTo("Request exceeded allowed number of files!
Permitted number of files is: 3!");
}
public void testMultipartRequestMaxFileSize() throws Exception {
@@ -399,7 +358,7 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
request.setMethod("post");
request.addHeader("Content-type", "multipart/form-data;
boundary=---1234");
- // inspired by the unit tests for jakarta commons fileupload
+ // inspired by the unit tests for Jakarta Commons FileUpload
String content = ("""
-----1234\r
Content-Disposition: form-data; name="file";
filename="deleteme.txt"\r
@@ -421,15 +380,12 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.intercept(mai);
- assertTrue(action.hasActionErrors());
+ assertThat(action.hasActionErrors()).isTrue();
- Collection<String> errors = action.getActionErrors();
- assertEquals(1, errors.size());
- String msg = errors.iterator().next();
- // FIXME: the expected size is 40 - length of the string
- assertEquals(
- "File deleteme.txt assigned to file exceeded allowed size
limit! Max size allowed is: 10 but file was: 11!",
- msg);
+ assertThat(action.getActionErrors())
+ .hasSize(1)
+ .first()
+ .isEqualTo("File deleteme.txt assigned to file exceeded
allowed size limit! Max size allowed is: 10 but file was: 11!");
}
public void testMultipartRequestMaxStringLength() throws Exception {
@@ -437,7 +393,7 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
request.setMethod("post");
request.addHeader("Content-type", "multipart/form-data;
boundary=---1234");
- // inspired by the unit tests for jakarta commons fileupload
+ // inspired by the unit tests for Jakarta Commons FileUpload
String content = ("""
-----1234\r
Content-Disposition: form-data; name="file";
filename="deleteme.txt"\r
@@ -467,14 +423,12 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.intercept(mai);
- assertTrue(action.hasActionErrors());
+ assertThat(action.hasActionErrors()).isTrue();
- Collection<String> errors = action.getActionErrors();
- assertEquals(1, errors.size());
- String msg = errors.iterator().next();
- assertEquals(
- "The request parameter \"normalFormField2\" was too long. Max
length allowed is 20, but found 27!",
- msg);
+ assertThat(action.getActionErrors())
+ .hasSize(1)
+ .first()
+ .isEqualTo("The request parameter \"normalFormField2\" was too
long. Max length allowed is 20, but found 27!");
}
public void testMultipartRequestLocalizedError() throws Exception {
@@ -482,7 +436,6 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
request.setMethod("post");
request.addHeader("Content-type", "multipart/form-data;
boundary=---1234");
- // inspired by the unit tests for jakarta commons fileupload
String content = ("""
-----1234\r
Content-Disposition: form-data; name="file";
filename="deleteme.txt"\r
@@ -505,24 +458,24 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
interceptor.intercept(mai);
- assertTrue(action.hasActionErrors());
+ assertThat(action.hasActionErrors()).isTrue();
- Collection<String> errors = action.getActionErrors();
- assertEquals(1, errors.size());
- String msg = errors.iterator().next();
- // the error message should contain at least this test
- assertTrue(msg.startsWith("Der Request übertraf die maximal erlaubte
Größe"));
+ assertThat(action.getActionErrors())
+ .hasSize(1)
+ .first()
+ .asString()
+ .startsWith("Der Request übertraf die maximal erlaubte Größe");
}
private String encodeTextFile(String filename, String contentType, String
content) {
- return endline +
+ return endLine +
"--" + boundary +
- endline +
- "Content-Disposition: form-data; name=\"" + "file" + "\";
filename=\"" + filename +
- endline +
+ endLine +
+ "Content-Disposition: form-data; name=\"file\"; filename=\"" +
filename + "\"" +
+ endLine +
"Content-Type: " + contentType +
- endline +
- endline +
+ endLine +
+ endLine +
content;
}
@@ -568,6 +521,55 @@ public class ActionFileUploadInterceptorTest extends
StrutsInternalTestCase {
super.tearDown();
}
+ private UploadedFile createTestFile(File content) {
+ return new UploadedFile() {
+ @Override
+ public Long length() {
+ return 0L;
+ }
+
+ @Override
+ public String getName() {
+ return "";
+ }
+
+ @Override
+ public boolean isFile() {
+ return false;
+ }
+
+ @Override
+ public boolean delete() {
+ return false;
+ }
+
+ @Override
+ public String getAbsolutePath() {
+ return null;
+ }
+
+ @Override
+ public File getContent() {
+ return content;
+ }
+
+ @Override
+ public String getOriginalName() {
+ return null;
+ }
+
+ @Override
+ public String getContentType() {
+ return null;
+ }
+
+ @Override
+ public String getInputName() {
+ return null;
+ }
+ };
+ }
+
public static class MyFileUploadAction extends ActionSupport implements
UploadedFilesAware {
private List<UploadedFile> uploadedFiles;
