如何使用spring的MockMultipartHttpServletRequest？ 得到“没有找到多部分边界”

显然我没有正确使用这个测试夹具。 我的servlet在tomcat中运行得很好，但是当我尝试使用这个mock时，找不到多部分边界。 “请求被拒绝，因为没有找到多部分边界”。

这里有一个答案显示如何使用文本文件来使用它，但该答案明确设置边界字符串并将文件嵌入为test。 我想我不需要手工处理像mockrequest.addFile （…）这样的方法

我没有在这里设置什么，或者我怎么做错了？

@org.testng.annotations.Test public void testDoPost() throws Exception { MockMultipartFile file = new MockMultipartFile("test.zip", "test.zip", "application/zip", MyServletTest.class.getResourceAsStream("/test.zip")); MockMultipartHttpServletRequest mockRequest = new MockMultipartHttpServletRequest(); mockRequest.addFile(file); mockRequest.set mockRequest.setMethod("POST"); mockRequest.setParameter("variant", "php"); mockRequest.setParameter("os", "mac"); mockRequest.setParameter("version", "3.4"); MockHttpServletResponse response = new MockHttpServletResponse(); new MyServletTest().doPost(mockRequest, response); // BOOM ! } 

这是例外

 Caused by: blablah: the request was rejected because no multipart boundary was found 

Answer 1

你需要设置边界。

关于什么是边界有一个很好的解释https://stackoverflow.com/a/10932533/2762092

要解决您的问题，请尝试此代码。

  import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import org.apache.commons.lang.ArrayUtils; import org.springframework.mock.web.MockHttpServletResponse; import org.springframework.mock.web.MockMultipartFile; import org.springframework.mock.web.MockMultipartHttpServletRequest; public class FileUploadTest { public void testDoPost() throws IOException { Path path = Paths.get("c:\\temp\\test.zip"); byte[] data = Files.readAllBytes(path); MockMultipartFile file = new MockMultipartFile("test.zip", "test.zip", "application/zip", data); MockMultipartHttpServletRequest mockRequest = new MockMultipartHttpServletRequest(); String boundary = "q1w2e3r4t5y6u7i8o9"; mockRequest.setContentType("multipart/form-data; boundary="+boundary); mockRequest.setContent(createFileContent(data,boundary,"application/zip","test.zip")); mockRequest.addFile(file); mockRequest.setMethod("POST"); mockRequest.setParameter("variant", "php"); mockRequest.setParameter("os", "mac"); mockRequest.setParameter("version", "3.4"); MockHttpServletResponse response = new MockHttpServletResponse(); new FileUpload().doPost(mockRequest, response); } public byte[] createFileContent(byte[] data, String boundary, String contentType, String fileName){ String start = "--" + boundary + "\r\n Content-Disposition: form-data; name=\"file\"; filename=\""+fileName+"\"\r\n" + "Content-type: "+contentType+"\r\n\r\n";; String end = "\r\n--" + boundary + "--"; // correction suggested @butfly return ArrayUtils.addAll(start.getBytes(),ArrayUtils.addAll(data,end.getBytes())); } } 

Answer 2

塞缪尔的伟大答案，但一个错误：

  String end = "\r\n"+ boundary + "--"; 

应该：

  String end = "--"+ boundary + "--"; 

非常感谢他的工作。

Answer 3

为塞缪尔投票。 虽然花了一天时间试图让它发挥作用。 问题在于：

 String end = "--" + boundary + "--"; 

应该：

 String end = "\r\n--" + boundary + "--"; 

Answer 4

能够添加多个字段，

  private byte[] createFileContents(String requestId, String date, String image, String invoiceNumber,String imageFile) { String requestIdField = "--" + BOUNDARY + "\r\n Content-Disposition: form-data; name=\"" + REQUEST_ID_KEY + "\";" + "Content-type: " + CONTENT_TYPE + "\r\n value=\"12345\"" + "\r\n\r\n"; String requestIdValue = requestId + "\r\n"; String numberFiledField = "--" + BOUNDARY + "\r\n Content-Disposition: form-data; name=\"" + NUMBER_KEY + "\";" + "Content-type: " + CONTENT_TYPE + "\r\n value=\"12345\"" + "\r\n\r\n"; String invoiceValue = invoiceNumber + "\r\n"; String dateField = "--" + BOUNDARY + "\r\n Content-Disposition: form-data; name=\"" + DATE_KEY + "\";" + "Content-type: " + CONTENT_TYPE + "\r\n value=\"12345\"" + "\r\n\r\n"; String dateValue = date + "\r\n"; String imageField = "--" + BOUNDARY + "\r\n Content-Disposition: form-data; name=\"" + IMAGE_KEY + "\"; filename=\"" + imageFile + "\"\r\n" + "Content-type: " + CONTENT_TYPE + "\r\n\r\n"; String imageValue = image + "\r\n"; String end = "\r\n--" + BOUNDARY + "--"; return ArrayUtils.addAll((requestIdField + requestIdValue + numberFiledField + invoiceValue + dateField + dateValue + imageField + imageValue).getBytes(), ArrayUtils.addAll(data, end.getBytes())); }