Original website: Knife4j series--Solve the problem of garbled characters in downloaded files_IT Knife Unsheathed Blog-CSDN Blog
Introduction
illustrate
This article introduces how Knife4j solves the problem of not displaying the download button when downloading files, and returning garbled characters.
Related URLs
File download is always Knife4j.txt · Issue #I374SP · Xiao Ming/knife4j - Gitee.com
Notice
This problem can be solved in Knife4j2.x version. Since there is no description of the API interface produces in the OpenAPI3 specification, it cannot be solved. Therefore, it is recommended to use knife4j-spring-boot-starter dependency, which is version 2.x; it is not recommended to use knife4j-springdoc-ui dependency, which is version 3.x.
Problem recurrence
In SpringBoot, Excel is exported through the response flow, and the results are as follows (there is no download button, and the response content is directly garbled):
solution
Add produces = "application/octet-stream" to the @ApiOperation annotation.
as follows:
@ApiOperation(value = "导出库存数据", produces = "application/octet-stream")
@PostMapping("exportStorage")
public void exportStorage(@RequestBody StorageQueryBO storageQueryBO) {
storageService.exportExcel(storageQueryBO);
}result
Click "Download File"
