比如：D:/學習/SSM/Workspace/test2/build/classes/wangxiaoer.json

報錯：

Exception in thread "main" java.io.FileNotFoundException: File 'D:\%e5%ad%a6%e4%b9%a0\SSM\Workspace\test2\build\classes\wangxiaoer.json' does not exist
?at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:196)
?at org.apache.commons.io.FileUtils.readFileToString(FileUtils.java:1326)
?at testJson.ReadJsonFile.main(ReadJsonFile.java:16)