Authentication is required but no CredentialsProvider has been registered

參考
在使用JGit執行push命令時，遇到了如下錯誤：
Authentication is required but no CredentialsProvider has been registered
經查詢后得知：git執行push命令時，需要配置git 用戶名密碼進行安全鏈接，
JGit中執行的操作如下： git.push().setCredentialsProvider(new UsernamePasswordCredentialsProvider(username, password));