摘要：
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.
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"
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