er-workspace/esign

Purpose and Deployment Model

This is a Java e-signing integration application packaged as a Maven web application. It exposes a Spring MVC flow for collecting an e-sign request, authenticating/initiating with an external signing provider, redirecting the user through signing, and handling the resulting signed-PDF response. No README or persistence layer is present.

Key build and deployment artifacts: Esign/Esign/pom.xml, Esign/Esign/src/main/webapp/WEB-INF/web.xml, Esign/Esign/src/main/webapp/WEB-INF/spring-servlet.xml.

Runtime Entry Points

A servlet container loads the application through web.xml; Spring MVC configuration supplies controller/component dispatching. The primary HTTP entry point is Esign/Esign/src/main/java/com/unimoni/esigning/controller/EsignController.java.

Server-rendered JSP pages start and support the browser-side request flow:

• Esign/Esign/src/main/webapp/WEB-INF/views/initiateRequest.jsp

• Esign/Esign/src/main/webapp/WEB-INF/views/eSignRequest.jsp

Request and Signing Orchestration

EsignController receives browser requests, binds form/request payloads, chooses views or redirects, and delegates signing operations rather than directly owning provider logic. Its service boundary is Esign/Esign/src/main/java/com/unimoni/esigning/service/EsigningService.java, implemented by Esign/Esign/src/main/java/com/unimoni/esigning/serviceimpl/EsigningServiceImpl.java.

This controller → service split is the core control-flow boundary: web concerns and JSP navigation remain in the controller; authentication, provider request construction, response handling, and PDF-related processing belong in the service implementation.

Integration Payload Boundary

The dao package contains the application’s transport models for both inbound web data and external e-sign interactions. Important flow objects include:

• Signing initiation/request: Esign/Esign/src/main/java/com/unimoni/esigning/dao/EsignRequest.java, Esign/Esign/src/main/java/com/unimoni/esigning/dao/EsigningRequest.java

• Provider completion/result: Esign/Esign/src/main/java/com/unimoni/esigning/dao/EsigningResponse.java, Esign/Esign/src/main/java/com/unimoni/esigning/dao/EsignPdfResponse.java

• Login and redirect transitions: Esign/Esign/src/main/java/com/unimoni/esigning/dao/LoginRequest.java, Esign/Esign/src/main/java/com/unimoni/esigning/dao/RedirectResponse.java

These models form the explicit serialization/deserialization boundary between browser input, internal orchestration, and the signing service.

External Signing and Redirect Flow

The likely primary sequence is: user opens initiation JSP → controller accepts request → service authenticates or prepares provider payload → application returns a redirect/provider URL → user completes signing externally → application processes an e-sign response and exposes the signed PDF/result.

Provider endpoint/reference constants are centralized in Esign/Esign/src/main/java/com/unimoni/esigning/constant/EndPointReferer.java. External signing infrastructure is therefore represented as a synchronous HTTP/redirect integration, rather than an internally hosted signing engine.

Document Handling

PDF result handling is represented by EsignPdfResponse and a multipart-file adapter, Esign/Esign/src/main/java/com/unimoni/esigning/serviceimpl/CustomMultipartFile.java. This indicates a boundary where provider-returned or generated document bytes are adapted to Spring’s file-upload/file-response conventions.

There is no visible repository-owned document store, database, queue, or asynchronous worker. Document lifecycle and durable storage, if any, are expected to be external to the code shown.

Configuration and Operational Boundaries

Application properties occur in both classpath and deployed-webapp locations: Esign/Esign/src/main/resources/application.properties and Esign/Esign/src/main/webapp/WEB-INF/classes/application.properties. These are likely the source of provider URL/credential and runtime settings; duplicate locations should be treated as a deployment-consistency risk.

The material runtime dependencies are Maven, Java, Spring MVC, JSP rendering, and a servlet container. The principal external service is the e-sign provider reached through configured endpoint references and browser redirects.