feat(methods): add chat.postMessage example - #48
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Add a methods/ chat.postMessage example verified by compilation alone, with no MockWebServer test. Because chatPostMessage and its request builder are strongly typed, javac catches wrong or misspelled arguments (e.g. .chnnel(...) -> cannot find symbol) at compile time without a mock server. This is an alternative to the MockWebServer runtime-test approach for side-by-side comparison. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
Add the methods example module to the CI matrix. The compile-only example has no test class; `mvn test` compiles it and runs zero tests, so CI verifies it builds and passes spotless. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
Match the runtime branch: add a chat manifest.json requesting only chat:write, move the scope out of the README into the manifest, and use the method's exact docs description. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
Mirror the bolt-js-examples methods README: tighten the intro, add a 'Making a request' walkthrough, and rename 'What's on display' to 'What's on call'. Keep the Maven layout and run command intact — the walkthrough runs from the project root (cd methods) where 'mvn compile exec:java' resolves.
The flexmark markdown formatter (spotless-maven-plugin) requires the file to end with a blank line; the mirrored README ended on the content line, failing 'spotless:check' in CI.
Flatten the example to mirror the bolt-js counterpart: perform the call flow directly in main() rather than delegating to example01(). Java still requires the class and main shell, but the body now reads top-to-bottom — read the token, initialize the client, call the method. Drops the now-unused ChatPostMessageResponse import.
Match the methods entry to its README: 'An interface for querying information from and enacting change in a Slack workspace' rather than the outdated 'Individual Slack Web API method calls' phrasing.
zimeg
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zimeg
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The example reads one variable (SLACK_TOKEN), so 'an environment variable' is more accurate than the plural.
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Summary
Adds a
methods/chat.postMessageexample to the Bolt for Java examples — the first entry in a newmethods/showcase of individual Slack Web API method calls withslack-api-client.src/main/java/chat/ChatPostMessage.javareads a token from the environment, initializes aMethodsClient, builds aChatPostMessageRequest, and callschatPostMessagedirectly inmain.manifest.jsonrequesting onlychat:write.methods/README.mddocuments the family and links the implementation; the top-level README lists the new showcase.The example is validated in CI by compilation and Spotless (Palantir) formatting — the strongly-typed
ChatPostMessageRequestbuilder catches wrong or misspelled arguments at compile time.Testing
From
methods/:Confirm the message posts to the configured channel.
Supersedes the runtime-test / MockWebServer exploration in #47 (closed).
Co-Authored-By: Claude svc-devxp-claude@slack-corp.com