Properties props = new Properties();

          try {

        //资源文件存放在类文件的根目录下。即是放在src下面。则不需要写路

　　　　　　//径，此时是放在file文件夹下

    props.load(getClass().getClassLoader().getResourceAsStream(

             "file/user.properties"));

        //当资源文件中有中文的时候可以采用下面的编码转化方法来读取。

        //然后直接读取props.getProperty("name");

           System.out.println(new String(props.getProperty("name").getBytes(

             "ISO-8859-1"), "GBK"));

          } catch (UnsupportedEncodingException e) {

           e.printStackTrace();

          } catch (IOException e) {

           // TODO Auto-generated catch block

           e.printStackTrace();

          }

try

        {

            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

            DocumentBuilder db = factory.newDocumentBuilder();

            Document doc = db.parse(new File("d://asp-search-config.xml"));

            Element elmtInfo = doc.getDocumentElement();

            NodeList nodes = elmtInfo.getChildNodes();

            int m = 1;

            System.out.println(nodes.getLength());

            for (int i = 0; i < nodes.getLength(); i++)

            {

                Node result = nodes.item(i);

                System.out.println(result.getNodeType()+"----"+result.getNodeName());

                if (result.getNodeType() == Node.ELEMENT_NODE && result.getNodeName().equals("index-file"))

                {

                    NodeList ns = result.getChildNodes();

                    for (int j = 0; j < ns.getLength(); j++)

                    {

                        Node record = ns.item(j);

                        System.out.println(record.getNodeType()+"@@@@"+record.getNodeName());

                        if (record.getNodeType() == Node.ELEMENT_NODE && record.getNodeName().equals("path"))

                        {

                            System.out.println(m + ": " + record.getTextContent());

                            m++;

                        }

                    }

                }

            }

        }

        catch (ParserConfigurationException e)

        {

            e.printStackTrace();

        }

        catch (SAXException e)

        {

            e.printStackTrace();

        }

        catch (IOException e)

        {

            e.printStackTrace();

        }

 // 使用了dom4j解析xml

        // 读取目录下用来测试的*.xml文件，取得xml主内容

        SAXReader saxReader = new SAXReader();

        Document document = saxReader.read("d://asp-search-config.xml").getDocument();

        int i = 1;

        // 遍历文档根节点（wuxialist）下的子节点列表，即txtbook节点的集合
　　　　 //document.getRootElement()获取根节点asp-search-config

        for(Element txtbook : (List<Element>)document.getRootElement().elements()){

            //取得txtbook节点下的name节点的内容

            System.out.println(i+"."+txtbook.element("path").getText());

        }

 1.利用ClassPathXmlApplicationContext

　　ApplicationContext context = new ClassPathXmlApplicationContext("beanConfig.xml");

//这种用法不够灵活，不建议使用。

 HelloBean helloBean = (HelloBean)context.getBean("helloBean");

 System.out.println(helloBean.getHelloWorld());

 2.利用FileSystemResource读取

  Resource rs = new FileSystemResource("D:/software/tomcat/webapps/springWebDemo/WEB-INF/classes/beanConfig.xml");

  BeanFactory factory = new XmlBeanFactory(rs);

  HelloBean helloBean = (HelloBean)factory.getBean("helloBean");

  System.out.println(helloBean.getHelloWorld());

  值得注意的是：利用FileSystemResource，则配置文件必须放在project直接目录下，或者写明绝对路径，否则就会抛出找不到文件的异常。

我们还利用上面的HelloBean.java文件，构造如下beanConfig.properties文件：

helloBean.class=chb.demo.vo.HelloBean

helloBean.helloWorld=Hello!chb!

    属性文件中的"helloBean"名称即是Bean的别名设定，.class用于指定类来源。

    然后利用org.springframework.beans.factory.support.PropertiesBeanDefinitionReader来读取属性文件

  BeanDefinitionRegistry reg = new DefaultListableBeanFactory();

  PropertiesBeanDefinitionReader reader = new PropertiesBeanDefinitionReader(reg);

  reader.loadBeanDefinitions(new ClassPathResource("beanConfig.properties"));

  BeanFactory factory = (BeanFactory)reg;

  HelloBean helloBean = (HelloBean)factory.getBean("helloBean");

  System.out.println(helloBean.getHelloWorld());

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

            response.setContentType("text/html;charset=utf-8");

            PrintWriter out = response.getWriter();

            Cookie[] cookies = request.getCookies();

            boolean flag = false ;

            if (cookies != null) {

                for (int i = 0; i < cookies.length; i++) {

                    Cookie cookie = cookies[i];

                    if (cookie.getName().equals("name")) {

                        out.print("<h2>exist , "+URLDecoder.decode(cookie.getValue(),"utf-8")+"</h2>");

                        flag = true ;

                        break;

                    }

                    if (!flag) {

                        Cookie cookieAdd = new Cookie("name", URLEncoder.encode("程序员","utf-8"));

                        response.addCookie(cookieAdd);

                        out.print("<h2>not exist , create successfully</h2>");

                    }

                    }

                }else{

                    Cookie cookieAdd = new Cookie("name", URLEncoder.encode("程序员","utf-8"));

                    response.addCookie(cookieAdd);

                    out.print("<h2>no one  exist,create successfully</h2>");

                }

            out.close();

    }