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Improve exception message if MultipartParser can not find end of body

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This commit improves the exception message thrown by MultipartParser
when it cannot find the end of the multipart body, by showing in the
message what the parser is looking for (CRLF--<boundary>).

Closes gh-28067
This commit is contained in:
Arjen Poutsma
2022-10-10 13:26:46 +02:00
parent 8ed1906f43
commit 8227032a0f
1 changed files with 5 additions and 1 deletions
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6
spring-web/src/main/java/org/springframework/http/codec/multipart/MultipartParser.java
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@@ -17,6 +17,7 @@
package org.springframework.http.codec.multipart;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
@@ -602,7 +603,10 @@ final class MultipartParser extends BaseSubscriber<DataBuffer> {
@Override
public void onComplete() {
if (changeState(this, DisposedState.INSTANCE, null)) {
emitError(new DecodingException("Could not find end of body"));
String msg = "Could not find end of body (␍␊--" +
new String(MultipartParser.this.boundary, StandardCharsets.UTF_8) +
")";
emitError(new DecodingException(msg));
}
}