If you truly need Hutool 2.6 for legacy reasons, do not search for a pre-built download. Use Maven or Gradle with the specific version, and let the tool fetch it from Maven Central. If you must have the JAR file manually, use https://repo1.maven.org/maven2/cn/hutool/hutool-core/2.6.0/ — but be aware that you are on your own for support.
After an hour of digging, Alex found the artifact not on a friendly download page, but deep in the . He manually downloaded the hutool-core-2.6.0.jar and its -sources.jar . hutool 2.6 download
Alex didn’t need Hutool 2.6. He needed a patch for a version that never existed. The real fix was to backport a single utility method from a newer release into a custom “hutool-legacy” JAR—a painstaking but safe solution. If you truly need Hutool 2
But when he dropped it into his legacy project, a new error appeared: NoClassDefFoundError: cn/hutool/core/io/IORuntimeException . Version 2.6 didn't have that class. The security report had lied—the vulnerability didn’t even exist in 2.6; it was introduced in 3.0. After an hour of digging, Alex found the
The first result took him to Maven Central. He saw the familiar pom.xml snippet:
<dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-core</artifactId> <version>2.6.0</version> </dependency> But something was wrong. The timestamp was from . Hutool’s current version, he soon learned, was 5.8.x. Version 2.6 was over seven years old. The official Hutool website (hutool.cn) didn’t even list 2.6 in its “history versions” dropdown anymore—it started at 3.0.