如何配置Eclipse使其不对指定代码片段执行格式化操作？

Absolutely! You can make Eclipse skip formatting specific parts of your code (like those long CLI commands in comments) when using the Ctrl+Shift+F shortcut. Here are the most straightforward ways to achieve this:

1. Use Eclipse's Built-in Off/On Formatter Tags #

This is the most flexible method—it lets you precisely mark which sections to exclude from formatting. Here's how to set it up and use it:

Step 1: Enable the Off/On Tag Feature #

• Open Window > Preferences > Java > Code Style > Formatter
• Click the Edit button (you'll need to create a copy of the default profile first, since you can't edit the built-in one directly)
• Switch to the Off/On Tags tab
• Make sure the Enable off/on tags checkbox is checked. By default, the tags are:
  • Off tag: // @formatter:off
  • On tag: // @formatter:on
    (You can customize these if you want, but the default works perfectly for most cases)

Step 2: Mark Sections to Skip #

Wrap the content you don't want formatted with these tags. For your comment-based CLI command example:

// This comment will be formatted normally
// @formatter:off
// Long CLI command that stays as-is:
// docker run -d -p 8080:8080 --name my-service -v /host/data:/app/data -e DB_URL=jdbc:mysql://localhost:3306/mydb my-app:v1.0
// @formatter:on
// This comment will also be formatted normally

You can also use this for code blocks if you ever need to preserve manual formatting:

public void configureService() {
    // Normal formatted code
    int timeout = 30;
    
    @formatter:off
    // Manual formatting preserved here
    String[] args = {
        "--config", "/etc/app/config.yaml",
        "--log-level", "debug",
        "--port", "8080"
    };
    @formatter:on
    
    // Back to normal formatting
    startService(args);
}

2. Adjust Comment Formatting Rules (Global Option) #

If you want to disable line wrapping for all comments (not just specific ones), you can tweak the formatter settings:

• Go back to the formatter edit window (same path as above)
• Switch to the Comments tab
• Under Line comment formatting or Block comment formatting, uncheck the Wrap long lines option
• This will prevent Eclipse from wrapping any comment lines, but note it applies globally—so all comments will retain their original line lengths.

The first method is almost always preferable because it lets you target exactly the sections you want to skip, without affecting the rest of your code's formatting.

内容的提问来源于stack exchange，提问作者luca.vercelli