953608ec49
This change improves the following use cases with `WebRequest.checkNotModified(String etag)` and `WebRequest.checkNotModified(long lastModifiedTimeStamp)`: 1) Allow weak comparisons for ETags Per rfc7232 section-2.3, ETags can be strong or weak; this change allows comparing weak forms `W/"etagvalue"` but does not make a difference between strong and weak comparisons. 2) Allow multiple ETags in client requests HTTP clients can send multiple ETags values in a single header such as: `If-None-Match: "firstvalue", "secondvalue"` This change makes sure each value is compared to the one provided by the application side. 3) Extended support for ETag values This change adds padding `"` to the ETag value provided by the application, if not already done: `etagvalue` => `"etagvalue"` It also supports wildcard values `*` that can be sent by HTTP clients. 4) Sending validation headers for 304 responses As defined in https://tools.ietf.org/html/rfc7232#section-4.1 `304 Not Modified` reponses must generate `Etag` and `Last-Modified` HTTP headers, as they would have for a `200 OK` response. 5) Providing a new method to validate both Etag & Last-Modified Also, this change adds a new method `WebRequest.checkNotModified(String etag, long lastModifiedTimeStamp)` in order to support validation of both `If-None-Match` and `Last-Modified` headers sent by HTTP clients, if both values are supported by the application code. Even though this approach is recommended by the HTTP rfc (setting both Etag and Last-Modified headers in the response), this requires more application logic and may not apply to all resources produced by the application. Issue: SPR-11324
Spring Framework
The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications -- on any kind of deployment platform. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
The framework also serves as the foundation for Spring Integration, Spring Batch and the rest of the Spring family of projects. Browse the repositories under the Spring organization on GitHub for a full list.
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See downloading Spring artifacts for Maven repository information. Unable to use Maven or other transitive dependency management tools? See building a distribution with dependencies.
Documentation
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Building from Source
The Spring Framework uses a Gradle-based build system. In the instructions
below, ./gradlew is invoked from the root of the source tree and serves as
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Be sure that your JAVA_HOME environment variable points to the jdk1.8.0 folder
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Check out sources
git clone git@github.com:spring-projects/spring-framework.git
Import sources into your IDE
Run ./import-into-eclipse.sh or read import-into-idea.md as appropriate.
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Install all spring-* jars into your local Maven cache
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The Spring Framework is released under version 2.0 of the Apache License.