Java枚举类的使用

说明:

根据设计图抽象的枚举类,一张模板背景图(会改变),二维码(传入参数生成),一个关闭的icon(固定不变)

设计图如下

枚举类

去除重复模板后共五个,根据需求编写枚举类如下,url则对应不同的模板,编写成后台人员的可配置项,

public enum ImageTemplateEnum {PURCHASE("purchase","url1"),BAR_CARD("barcard","url2"),FAILURE("failure","url3"),COINING("coining","url4"),INVITE("invite","url5");private String template;private String url;ImageTemplateEnum(String template, String url) {this.template = template;this.url = url;}/*** 通过template返回枚举常量对象* @param template* @return*/public static String getValue(String template){for (ImageTemplateEnum  item: values()) {if(item.getTemplate().equals(template)){return  item.url;}}return null;}public String getTemplate() {return template;}public void setTemplate(String template) {this.template = template;}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}
}

接口设计

    @PostMapping(value = "/xxxx")@SignCtrl@ResponseBodypublic String composeImg(String template,String userId,String state) {TbUser tbUser = userService.selectUserByUserId(userId);if (null == tbUser) {return JSON.toJSONString(new CommonView("500", "用户不存在", null));}Map<String,String> result = new HashMap<>();result.put("url", imgService.createImgByTemplate(template, tbUser.getThirdUserId(), state));return JSON.toJSONString(new CommonView("200","成功",result));}

根据传入条件生成二维码与模板拼接