如何使用spring的MockMultipartHttpServletRequest？得到“没有发现多部分边界” [英] How to use spring's MockMultipartHttpServletRequest? Getting "no multipart boundary was found"

问题描述

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。

Clearly I'm not using this test fixture right. My servlet works just fine in tomcat, but when I try to use this mock, the multi-part boundary is not found. "the request was rejected because no multipart boundary was found".

有答案 here ，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。我认为我不需要手动处理像 mockrequest.addFile （...）

There is an answer here that shows how to use this using a text file, but that answer sets the boundary string explicitly and embeds the file as test. I would think I would not need to do with by hand with methods like mockrequest.addFile(...)

我不设置什么这里或我怎么做错了？

What am I not setting here or how I am doing this wrong?

@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

推荐答案

你需要设置边界。

这里有一个很好的解释是什么是边界< a href =https://stackoverflow.com/a/10932533/2762092> https://stackoverflow.com/a/10932533/2762092

Here there is a good explanations about what is the boundary https://stackoverflow.com/a/10932533/2762092

要解决您的问题，请尝试此代码。

To solve your problem try this code.

    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()));
        }
}

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