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Book-management-system/.trellis/tasks/archive/2026-04/04-28-frontend-chinese-ui/prd.md
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2026-04-28 10:56:18 +08:00

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# brainstorm: Frontend Chinese UI
## Goal
Make the existing JSP/Servlet frontend interface display in Simplified Chinese so users see Chinese page titles, navigation, labels, action buttons, empty states, accessibility labels, and server-rendered feedback messages.
## What I already know
* The user requested: "前端界面需要中文".
* The project uses JSP/CSS rendered by Servlet/Tomcat, not a SPA framework.
* Visible English text is concentrated in `src/main/webapp/WEB-INF/jsp/**`.
* Some user-facing messages are set by Java controllers/services and rendered by JSP pages.
* The application already uses UTF-8 JSP page encoding and a UTF-8 character encoding filter.
## Assumptions
* Use Simplified Chinese for all user-visible frontend copy.
* Keep URLs, form field names, Java identifiers, enum codes, database values, CSS class names, and servlet names unchanged.
* Translate dynamic display names exposed by Java enums/role helpers where they are shown in the UI.
* Do not add a full i18n framework in this task.
## Open Questions
* None blocking; proceed with the Simplified Chinese assumption.
## Requirements
* Translate all hardcoded visible English text in JSP pages to Simplified Chinese.
* Change HTML language attributes from English to Simplified Chinese where applicable.
* Translate visible document titles and the web app display name.
* Translate server-generated messages that are displayed to users on the frontend.
* Preserve existing page structure, routing, permissions, form submission behavior, JSTL/EL bindings, and backend workflows.
* Leave stored data and machine-readable codes unchanged.
## Acceptance Criteria
* [x] Navigation, page headings, labels, buttons, table headers, empty states, option labels, and accessible labels appear in Simplified Chinese.
* [x] Login, unauthorized, dashboard, role home, catalog, management, reader, borrowing, report, system log, and admin user pages no longer show English UI copy except product/brand names and technical/user data.
* [x] Server-rendered success/error messages shown in the UI are Simplified Chinese.
* [x] Maven build succeeds.
## Definition of Done
* Tests or build verification run where practical.
* Lint/typecheck/build green for the Java webapp.
* Spec update considered after implementation.
## Out of Scope
* Runtime language switching.
* Browser locale detection.
* New translation resource bundles.
* Database data migration.
* Visual redesign beyond any minor layout-preserving text fit adjustments.
## Technical Notes
* Relevant spec index: `.trellis/spec/frontend/index.md`.
* Backend messages may require `.trellis/spec/backend/error-handling.md` and `.trellis/spec/backend/quality-guidelines.md`.
* Likely affected frontend files include `src/main/webapp/WEB-INF/jsp/**`, `src/main/webapp/WEB-INF/web.xml`, and possibly `src/main/webapp/static/images/library-login.svg` for accessible text.
* Likely affected Java files include controllers/services/entities that expose user-facing display names or request messages.