报错信息如下：
txt
aced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/JSON.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/api/AccountApi.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/api/DerivativesTradingPortfolioMarginProRestApi.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/api/MarketDataApi.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/BnbTransferRequest.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/BnbTransferResponse.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/ChangeAutoRepayFuturesStatusRequest.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/ChangeAutoRepayFuturesStatusResponse.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/FundAutoCollectionRequest.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/FundAutoCollectionResponse.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/FundCollectionByAssetRequest.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/FundCollectionByAssetResponse.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/GetAutoRepayFuturesStatusResponse.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/GetPortfolioMarginAssetLeverageResponse.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/GetPortfolioMarginAssetLeverageResponseInner.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/GetPortfolioMarginProAccountBalanceResponse.java', LF will be replaced by CRLF the next time Git touches it
error: open("binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/GetPortfolioMarginProAccountBalanceResponseInner.java"): Filename too long
error: unable to index file 'binance-connector-java-master/clients/derivatives-trading-portfolio-margin-pro/src/main/java/com/binance/connector/client/derivatives_trading_portfolio_margin_pro/rest/model/GetPortfolioMarginProAccountBalanceResponseInner.java'
fatal: adding files failed解决办法：
你现在执行 git add . 时，除了之前的 LF/CRLF 换行符警告，还遇到了 "Filename too long"（文件名太长） 的致命错误，导致 Git 无法索引这个 Java 文件，最终添加文件失败，你想解决这个问题。
错误原因分析
LF/CRLF 警告：和之前一样，只是 Windows 下 Git 自动转换换行符的兼容提示，非致命错误，无需处理；
Filename too long 致命错误：Windows 系统默认限制文件路径长度（传统上限是 260 个字符），而这个 Java 文件的完整路径（从 K:/study/... 到文件本身）超过了这个限制，Git 无法处理这种超长路径的文件，因此报出 "无法索引文件" 的错误，直接导致 git add 失败。
解决方案（优先推荐方案 1，最简单）
方案 1：修改 Git 配置（最简便，仅针对 Git 生效，无需管理员权限）
这个方案只调整 Git 的设置，让它支持超长路径，是新手最易操作的方式：
bash
# 1. 全局开启 Git 对长路径的支持（--global 表示所有仓库都生效）
git config --global core.longpaths true
# 2. （可选）清理之前失败的暂存记录（避免残留问题）
git rm --cached -r .
# 3. 重新执行 git add .
git add .方案 2：修改 Windows 系统设置（彻底解决系统级限制，需管理员权限）
如果方案 1 执行后仍报错，可通过修改系统策略彻底解除路径长度限制（注意：部分 Windows 家庭版没有 gpedit.msc，优先用方案 1 即可）：
按下 Win+R 组合键，输入 gpedit.msc，按回车打开「本地组策略编辑器」；
依次展开左侧菜单：计算机配置 → 管理模板 → 系统 → 文件系统 → NTFS文件系统；
找到右侧的「启用 NTFS 长路径」，双击打开设置窗口；
选择「已启用」，点击「确定」保存；
关闭并重新打开 Git Bash（MINGW64）窗口，再次执行 git add .。
总结
核心错误是 Windows 默认的文件路径长度限制，导致 Git 无法索引超长路径的 Java 文件；
优先执行 git config --global core.longpaths true 开启 Git 长路径支持，这是最简单、无权限要求的解决方法；
LF/CRLF 警告是正常的跨系统换行符兼容提示，无需额外处理。