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十九、文件下载及图片预览

IDEA2023.1.3破解,IDEA破解,IDEA 2023.1破解,最新IDEA激活码

目前SwaggerBootstrapUi支持的响应类型如下:

类型 说明
application/octet-stream 二进制流
image/png 图片
image/jpg 图片
image/jpeg 图片
image/gif 图片

特别需要注意的是:不管是文件下载或者是需要图片预览,都需要在接口中指定接口的produces,否则不能达到预期效果,接口的produces可参考上面表格中列出项.

关于文件下载的支持

SwaggerBootstrapUi1.8.9版本中添加了application/octet-stream下载类型的支持,并在1.9.0版本中完善,只需要配置相应接口的produces,即可在doc.html页面中查看效果,如下图:

80_1.png

80_2.png

点击下载文件即可下载当前接口响应的二进制流.示例代码可参考Api190Controller.java

特别说明,需要指定相应的produces

@ApiOperation(value = "下载测试-有参数+请求头版",position = 3)
@GetMapping(value = "/downloadFileAndParam2",produces = "application/octet-stream")
public void postRequest3AndParam(@RequestHeader(value = "uud") String uud,@RequestParam(value = "name") String name, HttpServletRequest request, HttpServletResponse response){
    logger.info("header:{}",uud);
    download(name,response);
}

关于图片预览的支持

图片预览一般用在验证码等场景中,很多时候,需要直接展示出验证码的情况,如下图:

80_3.png

80_4.png

验证码预览的后端代码可参考ImageController.java

特别说明,需要指定相应的produces

@Api(value = "图片预览",tags = "图片预览")
@RestController
@RequestMapping("/api/image")
public class ImageController {

    @GetMapping(value = "/preview",produces = "image/jpeg")
    public void preview(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //more....
    }
}

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