postman上传图片的base64

 不要添加前缀

 控制器和类

 @PostMapping("text-only")
    public List<TextDto> ocrTextOnly(@RequestBody OcrParam ocrParam) {
        //TODO
        return ocrapiService.ocrText(ocrParam.getImgBase64(),ocrParam.getImgType());
    }

@Data
@NoArgsConstructor
@AllArgsConstructor
public class OcrParam {
    
    /**
     * 图片base64编码的字符串
     */
    private String imgBase64;
    
    /**
     * 图片类型
     */
    private String imgType;
}