找不到jre中基础jar包：rt.jar问题

现象：

引用的时候出现错误： 代码报错：access restriction: The type JAXWSPRoperties is not accessible due to restriction on required library D:/idea_IDE/jdk1.7.0_51/jre/lib/rt.jar

解决办法:

1:点击项目->properties->java Build Path->Liberies

2:点击Jre System Liberies 然后点击remove删除 Jre System Liberies

3:点击Add Liberary… 选择Jre System Liberies 点击确定 ok