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Fix potential JarFileEntries ClassCastException 

Update `JarFileEntries` so that the interface is obtained rather than
the concrete implementation. This allows `JarEntry` values to be used
without causing a ClassCastException.

Closes gh-19041
This commit is contained in:
Phillip Webb 2020-09-14 13:48:59 -07:00
parent 492e1a4c0f
commit 4138e59c33
1 changed files with 1 additions and 1 deletions
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2
spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/JarFileEntries.java
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@ -370,7 +370,7 @@ class JarFileEntries implements CentralDirectoryVisitor, Iterable<JarEntry> {
int hashCode = AsciiBytes.hashCode(name); int hashCode = AsciiBytes.hashCode(name);
int index = getFirstIndex(hashCode); int index = getFirstIndex(hashCode);
while (index >= 0 && index < this.size && this.hashCodes[index] == hashCode) { while (index >= 0 && index < this.size && this.hashCodes[index] == hashCode) {
CentralDirectoryFileHeader candidate = getEntry(index, CentralDirectoryFileHeader.class, false, null); FileHeader candidate = getEntry(index, FileHeader.class, false, null);
if (candidate.hasName(name, NO_SUFFIX)) { if (candidate.hasName(name, NO_SUFFIX)) {
return index; return index;
} }