如何在春Spring MVC 应用程序中上传文件？

假设我们将使用公共资源多部分解析器，它使用 Apache 公共资源上载库以窗体处理文件上载。因此，您需要添加公域文件上载.jar和commons-io.jar依赖项。

现在创建模型类FileUploadForm，该模型将保存从 HTML 表单提交的多部分数据。

import org.springframework.web.multipart.MultipartFile;

public class FileUploadForm { private MultipartFile file;

public MultipartFile getFile() {
    return file;
}

public void setFile(MultipartFile file) {
    this.file = file;
}

} 现在创建实际处理上载逻辑的类。FileUploadController

import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.multipart.MultipartFile; import com.howtodoinjava.form.FileUploadForm;

@Controller public class FileUploadController { @RequestMapping(value = "/upload", method = RequestMethod.POST) public String save(@ModelAttribute("uploadForm") FileUploadForm uploadForm, Model map) {

    MultipartFile multipartFile = uploadForm.getFile();

    String fileName = "default.txt";

    if (multipartFile != null) {
        fileName = multipartFile.getOriginalFilename();
    }
     
    //read and store the file as you like

    map.addAttribute("files", fileName);
    return "file_upload_success";
}

} 上传的 JSP 文件如下所示：

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>

Spring MVC file upload example