Question

我正在测试使用dropwizard构建的端点，但出了点问题：

@Test
public void testPostWithFileSuccess() throws Exception
{
    FileDataBodyPart filePart = new FileDataBodyPart("file", new File(fixture("resources/testImage.jpg")));
    filePart.setContentDisposition(FormDataContentDisposition.name("file").fileName("testImage.jpg").build());

    FormDataMultiPart request = new FormDataMultiPart();
    request.field("data", fixture("resources/postWithFileSuccess.json"), MediaType.APPLICATION_JSON_TYPE);
    request.bodyPart(filePart);

    WebTarget target = mClient.target("http://localhost:8080/crackers").register(MultiPartFeature.class);
    Response response = target
            .request()
            .post(Entity.entity(request, MediaType.MULTIPART_FORM_DATA));

    assertThat(response.getStatus()).isEqualTo(200);
}

实际发生的是.post(Entity.entity(request, MediaType.MULTIPART_FORM_DATA));上的测试失败，并进行了以下考察：

javax.ws.rs.ProcessingException：java.io.FileNotFoundException：文件路径无效在org.glassfish.jersey.client.internal.HttpUrlConnector.apply（HttpUrlConnector.java:287）在org.glassfish.jersey.client.ClientRuntime.invoke（ClientRuntime.java:252）在org.glassfish.jersey.client.JerseyInvocation $ 1.call（JerseyInvocation.java:684）在org.glassfish.jersey.client.JerseyInvocation $ 1.call（JerseyInvocation.java:681）在org.glassfish.jersey.internal.Errors.process（Errors.java:315）在org.glassfish.jersey.internal.Errors.process（Errors.java:297）在org.glassfish.jersey.internal.Errors.process（Errors.java:228）在org.glassfish.jersey.process.internal.RequestScope.runInScope（RequestScope.java:444）在org.glassfish.jersey.client.JerseyInvocation.invoke（JerseyInvocation.java:681）在org.glassfish.jersey.client.JerseyInvocation $ Builder.method（JerseyInvocation.java:437）在org.glassfish.jersey.client.JerseyInvocation $ Builder.post（JerseyInvocation.java:343）在org.example.project.resources.CrackersTest.testPostWithFileSuccess（CrackersTest.java:201） 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）在org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall（FrameworkMethod.java:47）在org.junit.internal.runners.model.ReflectiveCallable.run（ReflectiveCallable.java:12）在org.junit.runners.model.FrameworkMethod.invokeExplosively（FrameworkMethod.java:44）在org.junit.internal.runners.statements.InvokeMethod.evaluate（InvokeMethod.java:17）在org.junit.internal.runners.statements.RunBefores.evaluate（RunBefores.java:26）在org.junit.internal.runners.statements.RunAfters.evaluate（RunAfters.java:27）在org.junit.rules.ExternalResource $ 1.evaluate（ExternalResource.java:48）在org.junit.rules.RunRules.evaluate（RunRules.java:20）在org.junit.runners.ParentRunner.runLeaf（ParentRunner.java:271）在org.junit.runners.BlockJUnit4ClassRunner.runChild（BlockJUnit4ClassRunner.java:70）在org.junit.runners.BlockJUnit4ClassRunner.runChild（BlockJUnit4ClassRunner.java:50）在org.junit.runners.ParentRunner $ 3.run（ParentRunner.java:238）在org.junit.runners.ParentRunner $ 1.schedule（ParentRunner.java:63）在org.junit.runners.ParentRunner.runChildren（ParentRunner.java:236）在org.junit.runners.ParentRunner.access $ 000（ParentRunner.java:53）在org.junit.runners.ParentRunner $ 2.evaluate（ParentRunner.java:229）在org.junit.runners.ParentRunner.run（ParentRunner.java:309）在org.junit.runner.JUnitCore.run（JUnitCore.java:160）在com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs（JUnit4IdeaTestRunner.java:117） at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs（JUnit4IdeaTestRunner.java:42）在com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart（JUnitStarter.java:262）在com.intellij.rt.execution.junit.JUnitStarter.main（JUnitStarter.java:84） 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）在com.intellij.rt.execution.application.AppMain.main（AppMain.java:147）引起：java.io.FileNotFoundException：文件路径无效在java.io.FileInputStream。（FileInputStream.java:133）在org.glassfish.jersey.message.internal.FileProvider.writeTo（FileProvider.java:115）在org.glassfish.jersey.message.internal.FileProvider.writeTo（FileProvider.java:67）在org.glassfish.jersey.media.multipart.internal.MultiPartWriter.writeTo（MultiPartWriter.java:232）在org.glassfish.jersey.media.multipart.internal.MultiPartWriter.writeTo（MultiPartWriter.java:79） at org.glassfish.jersey.message.internal.WriterInterceptorExecutor $ TerminalWriterInterceptor.invokeWriteTo（WriterInterceptorExecutor.java:265） at org.glassfish.jersey.message.internal.WriterInterceptorExecutor $ TerminalWriterInterceptor.aroundWriteTo（WriterInterceptorExecutor.java:250）在org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed（WriterInterceptorExecutor.java:162）在org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo（MessageBodyFactory.java:1130）在org.glassfish.jersey.client.ClientRequest.doWriteEntity（ClientRequest.java:517）在org.glassfish.jersey.client.ClientRequest.writeEntity（ClientRequest.java:499）在org.glassfish.jersey.client.internal.HttpUrlConnector._apply（HttpUrlConnector.java:388）在org.glassfish.jersey.client.internal.HttpUrlConnector.apply（HttpUrlConnector.java:285） ......还有42个

我不完全确定，好像该文件不存在或路径错误，Exception声明会引发new File(...)。

filePart显然有问题，但是什么？如果我对request.bodyPart(filePart);发表评论，那么测试就会失败并出现比较错误（预计会出现这种情况）。

Answer 1

问题是fixture(...)方法返回Resources.toString(Resources.getResource(filename), charset).trim()，因此调试器会看到该文件，但post(...)无法处理它。

解决问题，而不是

new File(fixture("resources/testImage.jpg"))

我应该用

new File(Resources.getResource("resources/testImage.jpg").toURI())

完整的固定方法列表：

@Test
public void testPostWithFileSuccess() throws Exception
{
    FileDataBodyPart filePart = new FileDataBodyPart("file", new File(Resources.getResource("resources/testImage.jpg").toURI()));
    filePart.setContentDisposition(FormDataContentDisposition.name("file").fileName("testImage.jpg").build());

    FormDataMultiPart request = new FormDataMultiPart();
    request.field("data", fixture("resources/postWithFileSuccess.json"), MediaType.APPLICATION_JSON_TYPE);
    request.bodyPart(filePart);

    WebTarget target = mClient.target("http://localhost:8080/crackers").register(MultiPartFeature.class);
    Response response = target
            .request()
            .post(Entity.entity(request, MediaType.MULTIPART_FORM_DATA));

    assertThat(response.getStatus()).isEqualTo(200);
}

当文件出现并被调试器

1 个答案: