记一次base64转MultipartFile的坑 - ToB企服应用市场:ToB评测及商务社交产业平台

@FeignClient(value = "base-files", configuration = SpringMultipartEncoder.class)
public interface UploadsClient {
@PostMapping(value = "base/file/uploads",produces = {MediaType.APPLICATION_JSON_UTF8_VALUE},consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
Map<String, Object> uploads(@RequestPart(value = "files") MultipartFile[] files);
}

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import org.springframework.web.multipart.MultipartFile;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
/**
* @author Administrator
*/
public class Base64ToMultipartFile implements MultipartFile {
private final byte[] fileContent;
private final String extension;
private final String contentType;
/**
* @param base64
* @param dataUri 格式类似于: data:image/png;base64
*/
public Base64ToMultipartFile(String base64, String dataUri) {
this.fileContent = Base64.getDecoder().decode(base64.getBytes(StandardCharsets.UTF_8));
this.extension = dataUri.split(";")[0].split("/")[1];
this.contentType = dataUri.split(";")[0].split(":")[1];
}
public Base64ToMultipartFile(String base64, String extension, String contentType) {
this.fileContent = Base64.getDecoder().decode(base64.getBytes(StandardCharsets.UTF_8));
this.extension = extension;
this.contentType = contentType;
}
@Override
public String getName() {
return "<strong>files</strong>";
}
@Override
public String getOriginalFilename() {
return "file_" + System.currentTimeMillis() + "." + extension;
}
@Override
public String getContentType() {
return contentType;
}
@Override
public boolean isEmpty() {
return fileContent == null || fileContent.length == 0;
}
@Override
public long getSize() {
return fileContent.length;
}
@Override
public byte[] getBytes() throws IOException {
return fileContent;
}
@Override
public ByteArrayInputStream getInputStream() throws IOException {
return new ByteArrayInputStream(fileContent);
}
@Override
public void transferTo(File file) throws IOException, IllegalStateException {
try (FileOutputStream fos = new FileOutputStream(file)) {
fos.write(fileContent);
}
}
}

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Base64ToMultipartFile

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