Java 我在使用ClassLoader getResources时犯了什么错误？

我编写了以下代码来测试代码中的方法。为了创建s3Event，我有一个json文件，但是当我使用类加载器时，总是返回一个空异常。有可能我的绝对路径不正确吗？我已经附上了一个图像，以显示文件路径布局，以防这是错误的

@Test
@DisplayName("Testing the handleRequest")
void testTheHandleRequest() throws URISyntaxException, IOException {
    ClassLoader classLoader = getClass().getClassLoader();
    File file = new File(Objects.requireNonNull(classLoader.getResource("s3Event.json")).toURI());

    S3Event s3Event = new ObjectMapper().readValue(file, S3Event.class);
    Context context = null;
    LambdaHandler lambdaHandler = new LambdaHandler();

    assertEquals ("Finished handleRequest()", lambdaHandler.handleRequest(s3Event, null));
}

---

我能找到的唯一问题是项目结构。Maven支持默认结构

src/test/resources

的默认ClassLoader资源行为，而在您的示例中，文件夹名称是

src/test/java/testResources

，这需要在POM或程序中进行额外的配置

我的项目文件夹结构如下所示

输出：

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running JsonLoaderTest
File found ~\resource-access\target\test-classes\sample.json
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.139 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  7.007 s
[INFO] Finished at: 2020-05-05T12:51:02+05:30
[INFO] ------------------------------------------------------------------------

---

希望这有帮助

这是否更能回答您的问题？我坚持使用getResourceAsStream（）方法作为性能观点。谢谢@Krish.Venkat-完美的答案！我更改了资源名称，但没有意识到maven需要特定的路径。干杯

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running JsonLoaderTest
File found ~\resource-access\target\test-classes\sample.json
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.139 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  7.007 s
[INFO] Finished at: 2020-05-05T12:51:02+05:30
[INFO] ------------------------------------------------------------------------