springmvc实现文件上传

最新推荐文章于 2025-09-09 08:37:13 发布

转载最新推荐文章于 2025-09-09 08:37:13 发布 · 65 阅读

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原文链接：http://www.cnblogs.com/realvie/p/6354430.html

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#java

本文介绍使用SpringMVC框架进行文件上传的具体步骤，包括引入commons-fileupload依赖、配置multipartResolver解析器、创建表单及Controller处理逻辑。

1.通过commons-fileupload来实现。导入相关jar包：commons-fileupload,commons-io

2.配置springmvc的配置解析器

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="utf-8"></property>
        <property name="maxUploadSize" value="10485760000"></property>
        <property name="maxInMemorySize" value="40960"></property>
    </bean>

3.jsp页面

<form action="upload.do" method="post" enctype="multipart/form-data">
file:<input type="file" name="file" /><input type="submit" value="submit"/>
</form>

4.Controller代码

public class FileuploadController {
    @RequestMapping("/upload")
    public String fileupload(@RequestParam("file")CommonsMultipartFile file, HttpServletRequest req) throws IOException{
        //获取文件名 file.getOriginalFilename();
        String path = req.getRealPath("/fileupload");//获取上传文件的路径
        InputStream is = file.getInputStream();
        OutputStream os = new FileOutputStream(new File(path,file.getOriginalFilename()));
        int len = 0;
        byte[] buffer = new byte[400];
        while((len=is.read(buffer)) != -1){
            os.write(buffer, 0, len);
        }
        os.close();
        is.close();
        return "/index.jsp";
    }
}