求助：用spring MultipartFile实现上传，中文乱码怎么处理？在线等~~

Posted 2023-04-26

@RequestMapping("/uploadPage")
@ResponseBody
public String uploadPage(Long id,@RequestParam("userfile") CommonsMultipartFile mFile)
long maxSize = 1000000;
String message = null;
if (!mFile.isEmpty())
NewActivity activity = NewActivity.findNewActivity(id);
String fileName = mFile.getOriginalFilename();
if(mFile.getSize()>maxSize)
message = "上传文件大小超过限制。";
return "\"failure\":\"" + message + "\"";

File file = new File(ACTIVITY_PAGE+fileName);
activity.setLinkAddress(fileName.replace(".jsp", ".html"));
activity.merge();
try
mFile.getFileItem().write(file); //将上传的文件写入新建的文件中
catch (Exception e)
e.printStackTrace();


return "true";

上面是上传的java代码，页面是extjs，上传的文件是jsp，上传完以后文件中的中文都变成乱码了。怎么处理，在线等~~~

参考技术A uploadPage 接受参数加个 HttpServletRequest 方法最上面写一下。
if (request.getCharacterEncoding() == null)
request.setCharacterEncoding("UTF-8");//你的编码格式
本回答被提问者采纳

spring boot MultipartFile[]文件上传

之前用spring MVC，转成spring boot之后发现上传不能用。网上参考说是spring boot已经有CommonsMultipartResolver了，但是我的上传后台接收的还是null。

后来参考https://segmentfault.com/q/1010000004657605 发现，还需要在Application里加些配置。

@SpringBootApplication
@Configuration
@EnableAutoConfiguration(exclude = MultipartAutoConfiguration.class)
@ImportResource("classpath:txAdvice.xml")
public class Application 

    public static void main(String[] args) 
        SpringApplication.run(Application.class, args);
    

    //显示声明CommonsMultipartResolver为mutipartResolver
    @Bean(name = "multipartResolver")
    public MultipartResolver multipartResolver() 
        CommonsMultipartResolver resolver = new CommonsMultipartResolver();
        resolver.setDefaultEncoding("UTF-8");
        resolver.setResolveLazily(true);//resolveLazily属性启用是为了推迟文件解析，以在在UploadAction中捕获文件大小异常
        resolver.setMaxInMemorySize(40960);
        resolver.setMaxUploadSize(5 * 1024 * 1024);//上传文件大小 5M 5*1024*1024
        return resolver;