wdfx100

  	URL url = new URL("http://www.kaishengit.com/images/2013.jpg");
			
	URLConnection conn =url.openConnection();
	InputStream stream = conn.getInputStream();
	
	File file = new File("F:/tupian.jpg");
	OutputStream out = new FileOutputStream(file);
	 
	BufferedInputStream bis = new BufferedInputStream(stream);
	BufferedOutputStream bos = new BufferedOutputStream(out);

wdfx100

        URL url = new URL("http://www.baidu.com");
  			
	URLConnection conn =url.openConnection();
	InputStream stream = conn.getInputStream();
	//字符流
	BufferedReader reader = new BufferedReader(new InputStreamReader(stream,"UTF-8"));
	String str = null;
	StringBuffer sb = new StringBuffer();
	while((str=reader.readLine())!=null){
		sb.append(str);

wdfx100

Pattern p = Pattern.compile("@\\w+\\s");

String str = "@tom @jerry @rose 这是我的电子邮件，给我发邮件哦[email protected]";

Matcher m = p.matcher(str);

while(m.find()) {
    System.out.println(m.group());
}

wdfx100

1、客户端发出请求；
 
2、DispatcherServlet 获取请求；
 
3、DispatcherServlet 查询 HandlerMapping，将请求的URL映射到一个控制器对象Controller，
     并将请求分发给这个 Controller；
 
4、Controller 根据设计的业务逻辑处理请求；
 
5、完成业务逻辑的处理后，Controller 返回一个ModelAndView 给 DispatcherServlet ；

wdfx100

/index.html = anon
/user/create = anon
/user/** = authc
/admin/** = authc, roles[administrator]
/rest/** = authc, rest
/remoting/rpc/** = authc, perms["remote:invoke"]


过滤器名称    过滤器类	                                                 描述
anon	    org.apache.shiro.web.filter.authc.AnonymousFilter       	匿名过滤器

wdfx100

HttpClient client = null;
try {
  client = new DefaultHttpClient();//获得一个代理
  
	HttpGet get = new HttpGet("http://www.youdao.com/smartresult-xml/search.s?type=id&q="+code);//获得请求
	HttpResponse response = client.execute(get);//获得响应			
	InputStream stream = response.getEntity().getContent(); //从内存角度，获得一个输入流
	BufferedReader reader = new BufferedReader(new InputStreamReader(stream,"GBK")); 
//获得的文字，以字符流的形式输出【图片、MP3，文件用字节流输出】
	StringBuilder sb = new StringBuilder(); 

wdfx100

function createXMLHttpRequest(){
     		var xmlHttp;//创建ajax引擎
	   		if(window.ActiveXObject){
	   			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	   			
	   		}else{
	   			xmlHttp = new XMLHttpRequest();
	   		}
	   		return xmlHttp;
   		}

wdfx100

  //让session过期
  	request.getSession().invalidate();//安全退出，强制Session过期
    //删除cookie
		Cookie[] cookies = request.getCookies();
		if(cookies!=null){
			for(Cookie c:cookies){
				if("username".equals(c.getName())||"password".equals(c.getName())){
					c.setMaxAge(0);
					c.setPath("/");
					c.setDomain("www.wdfx100.com");

wdfx100

login.java:
        if(rm != null){
    				Cookie usernameCookie =new Cookie("username", username);
  					usernameCookie.setDomain("www.wdfx100.com");
  					usernameCookie.setPath("/");
  					usernameCookie.setMaxAge(60*60*24);
  					
  					Cookie passwordCookie =new Cookie("password", password);
  					passwordCookie.setDomain("www.wdfx100.com");
  					passwordCookie.setPath("/");

wdfx100

jar
commons-codec-1.6.jar
sha.js

<form action="login" method="post" class="formgo">
      	
    		<c:choose>
	    		<c:when test="${param.error=='1001' }">
	    			<p>用户名或密码错误	</p>
	    		</c:when>