如果文件中有中文，保存时myeclipse会弹出提示框提示如下：
Save could not be completed.
Reason:
Some characters cannot be mapped using "ISO-8859-1" character encoding.
Either change the encoding or remove the character which are not supported
by the "ISO-8859-1" character encoding.
大体意思应该是字符集不对，不能保存，解决办法如下：
1.到jdk的bin目录下建立二个properties文件，其中一个写上要填写的内容然后
2.在DOS中进入到C:\Program Files\Java\jdk1.6.0_17\bin目录下，然后运行如下命令：
native2ascii -encoding gb2312 a.properties b.properties
a.properties 是源文件 b.properties 是目标文件
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