Spring获取属性配置

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

<!-- 加载属性文件 -->
<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();
        }
    }
}