问题遇到的现象和发生背景
Cannot invoke "java.net.URL.toExternalForm()" because "location" is null
问题相关代码,请勿粘贴截图
运行结果及报错内容
恳求大lao解决
Cannot invoke "java.net.URL.toExternalForm()" because "location" is null
恳求大lao解决
"location" is null
对象为空导致的异常,读取图片的地址不对,所以报错了。