在eclipse里用git，怎么撤销修改

Posted 2023-03-25

在eclipse里用git，撤销修改的说明如下：

Reverting changes in the working tree

   Replace with File in Git Index

Changes which are not yet committed and not yet staged can be reverted for a
set of selected files. Select the file(s) in the Package Explorer or an
analogous view and click Replace With > File in Git
Index.

  Replace with HEAD

This feature is currently not available on single file level. You can use
Reset to with option hard to forcefully reset
the entire working tree of your repository back to the state of the HEAD commit
(See "Resetting your current HEAD" below). This operation will revert all
changes in the working tree and the index. You can't do it on a selected set of
files using EGit yet.

    Replace with Previous Revision

    Changes that are already staged or even committed can be "reverted" by
replacing them with a version from the previous commit. Select a single resource
in the Package Explorer or an analogous view and click Replace With >
Previous Revision. The repository will determine the last commit that
modified the selected resource and offer to replace the workspace resource with
the contents of this commit.

This is mainly intended for "removing" single files from a commit (when
committing the reverted workspace resources, they are effectively removed from
the current commit). Even though this also works on folders and projects, the
results of replacing a folder or project with a "previous revision" may be
unexpected.

Revert using quickdiff

The quickddiff feature can be used to revert individual changes to a file.
You can revert by line, block (se range of changes lines) or selection. Select
all text and then Revert selection to revert a whole file.

Reverting changes introduced by a specific commit

Changes which are introduced by a given commit can be reverted by an
automatically created new commit on top of the currently checked out commit. The
commit which is to be reverted does not have to be checked out for that.

Select the commit in the History View, open the context menu and select
Revert Commit. This reverts the changes that the selected
commit introduces by creating a new commit on top of the currently checked out
commit.

Resetting your current HEAD

Git offers the possibility to reset the HEAD of the current branch to any
other commit. It optionally resets the index and the working tree to match that
commit. Note that this action affects all files and folders in the entire
repository.

You have the option to do a hard reset, a mixed reset and a soft reset.

soft -  the HEAD points now to the new commit, the index
and the working tree are unchanged

mixed -  the HEAD points now to the new commit, the index
is updated, the working tree is unchanged

hard - the HEAD points now to the new commit, the index and
the working tree are updated

    Reset to specific branch or tag

Select Team -> Reset... on a project. This opens a dialog
where you can select a branch or a tag.

Reset to a specific commit

Select a commit in the History view and open the context menu.  Here you find
the entries Hard reset, Mixed reset and
Soft reset.

 Revert all local and staged changes

This can be done as a special case of reset. If you reset to the current HEAD
(normally the last commit on your branch) with the option hard
you overwrite the working tree and the index with the content of the HEAD. You
can do this in three ways:

Select Team > Reset... on a project. In the dialog
select HEAD or your current branch and switch the radio button to
hard.

Right click and select Reset... on any branch or tag in the
Repositories view. This opens a dialog which lets you decide on the reset type.
Choose hard here.

Open the context menu on the HEAD commit in the history view and select
Hard Reset.

参考技术A 修改了两个文件a与b并且没有add和commit，此时这两个文件通过gitstatus-s可以看到M状态，若想单独撤销某一个文件修改，恢复到上一次提交时的状态，可以执行gitcheckout--[filename]，即可将filename文件的上一个提交状态检出到当前工作区，filename就是要检出的文件名。不影响其他文件。gitcheckout--a 参考技术B git地址修改需要重新clone、修改地址，现将方法记录如下：1.Clone新地址：

2.在Eclipse中打开Git Respository Exploring 视图：

3.在左侧出现所有项目：

4.右键点击要修改的项目：

5.在选项中选择“属性”，弹出配置页面：

6.由于没有修改功能，只好删掉原来的，新添一个，输入新的url 参考技术C 直接用用命令吧。
git checkout -- <file>