使用JPEGImageEncoder提示Access restriction:错误

当我们在对图片进行操作时，需要使用到

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); JPEGEncodeParam jep = JPEGCodec.getDefaultJPEGEncodeParam(tag); 这个时候eclipse会报错：

Access restriction: The type JPEGImageEncoder is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar

Access restriction: The type JPEGCodec is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar Access restriction: The method createJPEGEncoder(OutputStream) from the type JPEGCodec is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar Access restriction: The method encode(BufferedImage) from the type JPEGImageEncoder is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar

这个事eclipse的设置问题，它默认把这些受访问限制的API设成了ERROR，你只要把

Windows-Preferences-Java-Complicer-Errors/Warnings 里面的Deprecated and restricted API中的Forbidden references(access rules)选为Warning就可以编译通过了。