import org.projectfloodlight.openflow.protocol.OFFlowModifyStrict; //导入依赖的package包/类
public static OFFlowModifyStrict toFlowModifyStrict(OFFlowMod fm) {
	OFVersion version = fm.getVersion();
	OFFlowModifyStrict.Builder b = OFFactories.getFactory(version).buildFlowModifyStrict();
	if (b.getVersion().compareTo(OFVersion.OF_10) == 0) {
		return b.setActions(fm.getActions())
				.setBufferId(fm.getBufferId())
				.setCookie(fm.getCookie())
				// cookie-mask not supported
				.setFlags(fm.getFlags())
				.setHardTimeout(fm.getHardTimeout())
				.setIdleTimeout(fm.getIdleTimeout())
				// instructions not supported
				.setMatch(fm.getMatch())
				// out-group not supported
				.setOutPort(fm.getOutPort())
				.setPriority(fm.getPriority())
				// table-id not supported
				.setXid(fm.getXid())
				.build();
	} else {
		return b.setActions(fm.getActions())
				.setBufferId(fm.getBufferId())
				.setCookie(fm.getCookie())
				.setCookieMask(fm.getCookieMask()) // added in OF1.1
				.setFlags(fm.getFlags())
				.setHardTimeout(fm.getHardTimeout())
				.setIdleTimeout(fm.getIdleTimeout())
				.setInstructions(fm.getInstructions()) // added in OF1.1
				.setMatch(fm.getMatch())
				.setOutGroup(fm.getOutGroup()) // added in OF1.1
				.setOutPort(fm.getOutPort())
				.setPriority(fm.getPriority())
				.setTableId(fm.getTableId())
				.setXid(fm.getXid())
				.build();
	}
}