Spring获取属性配置

今天药忘吃喽~ 2022-05-16 09:24 161阅读 0赞

### 添加属性文件 ###

resource.properties

文件内容

HTML_OUT_PATH=D:/temp/java/item/

### 加载属性文件 ###

springmvc.xml

<context:property-placeholder location="classpath:resource/resource.properties"/>

### 获取属性 ###

@Value(“$\{HTML\_OUT\_PATH\}”)  
private String HTML\_OUT\_PATH;

public class ItemAddMesssageListener implements MessageListener { 
    
        @Autowired
        private ItemService itemService;
        @Autowired
        private FreeMarkerConfigurer freeMarkerConfigurer;
    
        @Value("${HTML_OUT_PATH}")
        private String HTML_OUT_PATH;
    
        @Override
        public void onMessage(Message message) {
            try {
                //从消息中取商品id
                TextMessage textMessage = (TextMessage) message;
                String strId = textMessage.getText();
                Long itemId = Long.parseLong(strId);
                //等待事务提交
                Thread.sleep(1000);
                //根据商品id查询商品信息及商品描述
                TbItem tbItem = itemService.getItemById(itemId);
                Item item = new Item(tbItem);
                TbItemDesc itemDesc = itemService.getItemDescById(itemId);
                //使用freemarker生成静态页面
                Configuration configuration = freeMarkerConfigurer.getConfiguration();
                //1.创建模板
                //2.加载模板对象
                Template template = configuration.getTemplate("item.ftl");
                //3.准备模板需要的数据
                Map data = new HashMap<>();
                data.put("item", item);
                data.put("itemDesc", itemDesc);
                //4.指定输出的目录及文件名
                Writer out = new FileWriter(new File(HTML_OUT_PATH + strId + ".html"));
                //5.生成静态页面
                template.process(data, out);
                //关闭流
                out.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }