Ubuntu 17.10下Eclipse Java EE无法启动求助，附Spring日志及学习建议需求

First: Fixing Your Eclipse Startup Issue #

Looking at your log, the problem is clearly coming from the Spring Beans Core Plugin you installed last year—even though you're not using it right now, it's throwing an error when Eclipse tries to shut down/restart, which breaks the startup process. Here are the steps to fix this:

1. Try Clean Boot First #

Open your Ubuntu terminal and run this command to start Eclipse in clean mode (this clears cached plugin data and reinitializes the plugin system):

eclipse -clean

This often fixes weird plugin-related startup glitches without needing to do anything else.

2. Uninstall the Spring Plugin (if clean boot doesn't work) #

If Eclipse still won't start, you need to remove the problematic Spring plugin manually:

• Option 1: Check the dropins folder
  Navigate to your Eclipse installation directory, find the dropins folder, and delete any subfolders/jars related to org.springframework.ide.eclipse.
• Option 2: Edit plugin configuration
  Go to <Eclipse-Install-Dir>/configuration/org.eclipse.equinox.simpleconfigurator and open the bundles.info file. Search for all lines starting with org.springframework.ide.eclipse, delete those lines, save the file, then restart Eclipse.
• Option 3: If you can get Eclipse to start (via clean mode)
  Go to Help > Eclipse Marketplace > Installed tab, find all Spring-related plugins, select them, and click Uninstall. Follow the prompts to restart Eclipse.

3. Backup Workspace Metadata (Optional but Safe) #

If all else fails, you can try resetting your workspace's plugin state:

• Close Eclipse, go to your workspace directory, and rename the .metadata folder to .metadata.bak (this backs up your workspace settings).
• Start Eclipse again—it will create a new .metadata folder. You can then reimport your projects and reconfigure your settings.

Second: Learning Tips for Spring & Hibernate #

Great that you're looking to learn these frameworks! Here's my practical advice:

For Spring: #

• Start with the basics first: Focus on IoC (Inversion of Control) and AOP (Aspect-Oriented Programming)—these are the core concepts that power everything else in Spring. Use simple Java SE projects to practice dependency injection before moving to Spring Web or Spring Boot.
• Use Spring Boot early: Spring Boot removes most of the boilerplate configuration, making it easier to build and run applications. Start with the official Spring Boot Quick Starts to build small apps (like a REST API, or a simple web app with Thymeleaf).
• Hands-on practice > passive learning: Don't just read tutorials—code along. Build tiny projects: a todo app, a library management system, or a weather API client. This helps you remember concepts better.
• Master Spring Data JPA: It's a powerful abstraction over ORM frameworks like Hibernate, and it's widely used in real-world projects. Learn how to define repositories, use query methods, and handle database operations without writing raw SQL (or HQL) most of the time.

For Hibernate: #

• Understand ORM first: Before diving into Hibernate, make sure you grasp what Object-Relational Mapping is—how Java objects map to database tables, and why this is useful.
• Start with the official Hibernate Quick Start: Follow the step-by-step guide to set up a simple project, map a Java entity to a database table, and perform basic CRUD operations.
• Learn HQL (Hibernate Query Language): It's similar to SQL but works with Java objects instead of tables. Knowing how to write HQL queries is essential for more complex operations.
• Combine it with Spring: Once you know the basics of Hibernate, integrate it with Spring (or Spring Boot) to see how they work together in a real application. Spring's transaction management makes working with Hibernate much easier.

General Tips: #

• Use official documentation: It's the most reliable source of information. Spring and Hibernate have excellent docs with examples and explanations.
• Debug actively: When you run into issues, don't just copy-paste error messages—learn to read stack traces, use your IDE's debugger to step through code, and understand what's going wrong.
• Join communities: Ask questions on platforms like Stack Overflow (make sure to provide clear details and code snippets when asking), or join Java/Spring/Hibernate forums to learn from others.

内容的提问来源于stack exchange，提问作者docen67