如何从资源文件夹读取文件作为文件输入流在JAR Springboot

Question

我试图从一个json文件中读取值，该文件直接放在我的资源文件夹中。我能够在bootrun中成功运行它，没有任何错误

 try (FileInputStream serviceAccountStream=new FileInputStream("src/main/resources/mockData.json");) {
            credentials = ServiceAccountCredentials.fromStream(serviceAccountStream);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        catch (Exception e){
            System.out.println("Issue with the credential reader"+e.getMessage());

        }

然而，当用上面的代码创建一个JAR时，我得到的异常是fileNotFound

java-jar app-0.0.1-SNAPSHOT-plain。罐子

java.io.FileNotFoundException: src\main\resources\mockData.json (The system cannot find the path specified)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(Unknown Source)
        at java.io.FileInputStream.<init>(Unknown Source)
        at java.io.FileInputStream.<init>(Unknown Source)
        at com.exampleBQ.demoBQ.BQConfig.getBQBean(BQConfig.java:31)
    ```

Could someone plz help on how to read the file as FileInputStream  within Jar

Answer 1

当您使用Springstart时，您可以使用资源抽象

尝试这样做：-

@Value("classpath:data/mockData.json")
Resource resourceFile;