微信小程序上傳文件

項目：spring boot + mybatis plus + spring + redis

測試接口

    @ApiOperation(value = "單文件上傳測試接口")
    @PostMapping(value = "/file")
    public String fileUpload(MultipartFile file) {
        if (file.getSize() > 0) {
            System.out.println("上傳成功");
        }
        return "";
    }

swagger或postman測試發現，file參數接收不到文件，始終為null。

解決方案：

<!--        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>-->
<!--        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.2</version>
        </dependency>-->

/*@Configuration
public class MultipartResolverConfig {
    @Bean(name = "multipartResolver")
    public MultipartResolver multipartResolver(){
        CommonsMultipartResolver resolver = new CommonsMultipartResolver();
        //上傳文件大小 10M 10*1024*1024
        resolver.setMaxUploadSize(10*1024*1024);
        resolver.setDefaultEncoding("UTF-8");
        return resolver;
    }
}*/

結束