Eclipse
1.打开Window>Preferences>Maven>Maven4MyEclipse>User Interface 勾选"open XML page in the POM editor by default
2. 打开Window>Preferences>General>Editors>File Associations. 点击 File Types 标签页中 add 按钮，File type 输入 pom.xml
3.选中 pom.xml,在Associated editors 标签页中选中 Maven POM Editor ，点击 Default .
MyEclipse
1.打开Window>Preferences>Myeclipse>User Interface 勾选"open XML page in the POM editor by default
2. 打开Window>Preferences>General>Editors>File Associations. 点击 File Types 标签页中 add 按钮，File type 输入 pom.xml
3.选中 pom.xml,在Associated editors 标签页中选中 Maven POM Editor ，点击 Default .
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https://mp.csdn.net/postedit/80365677