MultipartException：当前请求不是多部分请求

Question

我试图使一个宁静的控制器来上传文件。我已经看到
了，并做了这个控制器：

@RestController
public class MaterialController {

    @RequestMapping(value="/upload", method= RequestMethod.POST)
    public String handleFileUpload(
            @RequestParam("file") MultipartFile file){
        String name = "test11";
        if (!file.isEmpty()) {
            try {
                byte[] bytes = file.getBytes();
                BufferedOutputStream stream =
                        new BufferedOutputStream(new FileOutputStream(new File(name + "-uploaded")));
                stream.write(bytes);
                stream.close();
                return "You successfully uploaded " + name + " into " + name + "-uploaded !";
            } catch (Exception e) {
                return "You failed to upload " + name + " => " + e.getMessage();
            }
        } else {
            return "You failed to upload " + name + " because the file was empty.";
        }
    }
}

and then i used postman to send a pdf:

But the server crashes with the error:

.MultipartException: Current request is not a multipart request

我再次找到了这个，并添加了一个bean.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    </bean>
</beans>

不幸的是，它仍然抱怨相同的错误。

Answer 1

当您将邮递员用于多部分请求时，请不要
在页眉中指定自定义Content-Type。因此，您在Postman中的Header标签应该为空。邮递员
将确定表单数据边界。在邮递员的“正文”选项卡中，您应该选择
表格数据并选择文件类型。您可以在https://github.com/postmanlabs/postman-app-support/issues/576中找到相关的讨论