linux：The driver is not executable: /phantomjs/bin/phantomjs

在linux使用selenium抓取的時候出現錯誤

java.lang.IllegalStateException: The driver is not executable: /phantomjs/bin/phantomjs
	at com.google.common.base.Preconditions.checkState(Preconditions.java:518)
	at org.openqa.selenium.remote.service.DriverService.checkExecutable(DriverService.java:150)
	at org.openqa.selenium.phantomjs.PhantomJSDriverService.findPhantomJS(PhantomJSDriverService.java:245)
	at org.openqa.selenium.phantomjs.PhantomJSDriverService.createDefaultService(PhantomJSDriverService.java:181)
	at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:105)
	at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:95)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springfr