如何使用REST Assured上傳文件？

Question

我寫了一個服務，可以將文件上傳到服務器，現在我正在使用REST Assured編寫它的集成測試。功能代碼如下：

/* Upload a new document */ 
    @RequestMapping(method = RequestMethod.POST) 
    public ResponseEntity uploadDocument(@RequestPart("file") final MultipartFile file, final HttpServletRequest request) throws IOException { 
     final String id = documentService.saveDocument(file); 
     final String url = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + "/documents/" + id; 
     return ControllerUtil.resourceCreatedMessage(id, url); 
    } 

要使用這項服務，我總是上傳郵差一個文件，我沒加「的Content-Type =的multipart/form-data的」的頭，它的工作原理完美：

如果我添加標題信息「Content-Type = multipart/form-data」，我會收到消息「400 - 請求不是多部分請求，請參閱詳細信息以獲取更多信息」。這部分也讓我困惑，因爲在上面的圖片中，你可以看到我正在以「表單數據」發送文件，它怎麼可能不是多部分請求？

反正我寫的集成測試：

@Test 
public void testDocuments() throws URISyntaxException { 
    // Test post a document. 
    given().multiPart("file", new File(LOCATE_TO_THE_TEST_HTML_FILE)) 
      .expect().statusCode(201).when() 
      .post(HOST + "/documents"); 
} 

，但我得到了415錯誤：

java.lang.AssertionError: 1 expectation failed. 
Expected status code <201> doesn't match actual status code <415>. 

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) 
at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:83) 
at org.codehaus.groovy.reflection.CachedConstructor.doConstructorInvoke(CachedConstructor.java:77) 
at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrap.callConstructor(ConstructorSite.java:84) 
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallConstructor(CallSiteArray.java:60) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:235) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:247) 
at io.restassured.internal.ResponseSpecificationImpl$HamcrestAssertionClosure.validate(ResponseSpecificationImpl.groovy:451) 
at io.restassured.internal.ResponseSpecificationImpl$HamcrestAssertionClosure$validate$1.call(Unknown Source) 
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125) 
at io.restassured.internal.RequestSpecificationImpl.applyPathParamsAndSendRequest(RequestSpecificationImpl.groovy:1632) 
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) 
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) 
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) 
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1215) 
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024) 
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:812) 
at io.restassured.internal.RequestSpecificationImpl.invokeMethod(RequestSpecificationImpl.groovy) 
at org.codehaus.groovy.runtime.callsite.PogoInterceptableSite.call(PogoInterceptableSite.java:48) 
at org.codehaus.groovy.runtime.callsite.PogoInterceptableSite.callCurrent(PogoInterceptableSite.java:58) 
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:182) 
at io.restassured.internal.RequestSpecificationImpl.applyPathParamsAndSendRequest(RequestSpecificationImpl.groovy:1637) 
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) 
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) 
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) 
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1215) 
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024) 
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:812) 
at io.restassured.internal.RequestSpecificationImpl.invokeMethod(RequestSpecificationImpl.groovy) 
at org.codehaus.groovy.runtime.callsite.PogoInterceptableSite.call(PogoInterceptableSite.java:48) 
at org.codehaus.groovy.runtime.callsite.PogoInterceptableSite.callCurrent(PogoInterceptableSite.java:58) 
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154) 
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:182) 
at io.restassured.internal.RequestSpecificationImpl.post(RequestSpecificationImpl.groovy:170) 
at io.restassured.internal.RequestSpecificationImpl.post(RequestSpecificationImpl.groovy) 
at integrationTest.DocumentsIT.testDocuments(DocumentsIT.java:29) 
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) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 

我嘗試添加」 .contentType（ 「多/表單數據」） 「但同樣的錯誤發生。誰能幫我？

Answer 1

最後發現，我應該按以下方式指定文件的數據類型的原因：

.multiPart("file", new File(TestUtil.getFileURI("/examples/help.html")), "text/html")