some characters cannot be mapped using iso-8859-1 character encoding

some characters cannot be mapped using iso-8859-1 character encoding

Eclipse中新建一个.properties文件，如果输入中文保存时就会提示错误

Reason:
some characters cannot be mapped using "ISO-8859-1" character encoding.
Either change the encoding or remove the characters which are not supported
by the "ISO-8859-1" character encoding.

解决办法：
方案一: 菜单->Window->Preferences->General->Content Types->Text->Java Properties File设置Default encoding,把ISO-8859-1改为UTF-8  然后 update.

 如果是jsp文件或者其他文件不能保存，也可以使用相同的方法，在Text里选择相应类型的文件，将下面的Default encoding，从ISO-8859-1改为UTF-8即可。

方案二：如果是jsp不能保存，那么可以把pageEncoding设置为UTF-8就行了，比如：pageEncoding="UTF-8"   

或者Ctrl+F找找iso-8859-1，把所有的iso-8859-1替换为UTF-8也行。