[Java] @PathVariable注解,让spring支持参数带值功能的案例

@RequestMapping("/users/{userid}")
@ResponseBody
public String getUser(@PathVariable String userid){
  return "userid=" + userid; 
}

- Annotation which indicates that a method parameter should be bound to a URI template variable. Supported for RequestMapping annotated handler methods in Servlet environments.
- If the method parameter is Map<String, String> or MultiValueMap<String, String> then the map is populated with all path variable names and values.

/**
   * 叫号
   */
  @PutMapping("/call/{checkWicket}-{checkNum}-{status}")
  public ApiReturnObject call(@PathVariable("checkWicket") String checkWicket,@PathVariable("checkNum") String checkNum,
    @PathVariable("status") String status) {
  if(StringUtils.isBlank(checkWicket) || StringUtils.isBlank(checkNum)) {
    return ApiReturnUtil.error("叫号失败,窗口号,检查者编号不能为空");
  }else {
    if(StringUtils.isBlank(status)) status ="1";
    try {
    lineService.updateCall(checkWicket,checkNum,status);
    return ApiReturnUtil.success("叫号成功");
    } catch (Exception e) {
    return ApiReturnUtil.error(e.getMessage());
    }
  }
  }

@RequestMapping(value = "preview/{fileName}", method = RequestMethod.GET)
public void previewFile(@PathVariable("fileName") String fileName, HttpServletRequest req, HttpServletResponse res) {
 officeOnlinePreviewService.previewFile(fileName, req, res);
}

@RequestMapping(value = "preview/{fileName:.+}", method = RequestMethod.GET)
public void previewFile(@PathVariable("fileName") String fileName, HttpServletRequest req, HttpServletResponse res) {
 officeOnlinePreviewService.previewFile(fileName, req, res);
}

{fileName:.+}