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