嵌入式jetty --- 轉載

嵌入式jetty

發表於  七月 3, 2012  由 forest

本文主要講述如何使用嵌入式jetty,建立http/https服務器.

一.   相關jar包

Jetty-server
Jetty-servlet

二.建立方式

2.1）最簡單的

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Server server =newServer(8080); server.start(); server.join();

建立一個jetty server,並啓動,這樣咱們就建立了一個最簡單的http服務器,檢查8080端口爲監聽狀態, 可是很明顯,該服務器不會對客戶端請求有任何響應.

2.2）HANDLER

1）實現

從實現上來看, jetty server自己就是一個HandlerWrapper, 能夠經過爲server設置handler,處理客戶端的請求.

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Server server =newServer(8080); server.setHandler(newHelloHandler()); server.start(); server.join();

經過擴展AbstractHandler類, 實現handle方法, 定義用戶本身的handler, 例如:

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publicclassHelloHandlerextendsAbstractHandler { publicvoidhandle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throwsIOException, ServletException { response.setContentType("text/html;charset=utf-8"); response.setStatus(HttpServletResponse.SC_OK); baseRequest.setHandled(true); response.getWriter().println("</pre> <h1>Hello World</h1> <pre> "); } }

2）測試

瀏覽器上輸入:

http://localhost:8080

輸出:

<h1>Hello World</h1>

2.3） SERVLET

直接爲Server設置Handler,咱們沒法針對不一樣的URL Path,完成不一樣的處理邏輯, 例如,
當瀏覽器輸入以下URL時,服務器區別處理:

http://localhost:8080/*

http://localhost:8080/TYPE1/*


http://localhost:8080/TYPE2/*

1）實現

Server添加ServletContextHandler,而後,針對不一樣的path, 設置對應的Servlet來處理.

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Server server =newServer(8080); ServletContextHandler context =newServletContextHandler( ServletContextHandler.SESSIONS); context.setContextPath("/"); server.setHandler(context); context.addServlet(newServletHolder(newHelloServlet()),"/*"); context.addServlet(newServletHolder(newHelloServlet( "TYPE1 Request")),"/TYPE1/*"); context.addServlet(newServletHolder(newHelloServlet( "TYPE2 Request")),"/TYPE2/*"); server.start(); server.join();

經過擴展HttpServlet,覆蓋doPost或者doGet方法,定義用戶本身的Servlet,例如:

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publicclassHelloServletextendsHttpServlet { String greeting ="Hello"; publicHelloServlet() { }   publicHelloServlet(String hi) { greeting = hi; }   @Override protectedvoiddoGet(HttpServletRequest request, HttpServletResponse response)throwsServletException, IOException { response.setContentType("text/html"); response.setStatus(HttpServletResponse.SC_OK); response.getWriter().println("</pre> <h1>」 + greeting + "</h1> <pre> "); }   @Override protectedvoiddoPost(HttpServletRequest request, HttpServletResponse response)throwsServletException, IOException { doGet(request, response); } }

2）測試

瀏覽器上輸入:

http://localhost:8080/*

http://localhost:8080/TYPE1/*


http://localhost:8080/TYPE2/*

分別輸出:

<h1>Hello</h1>
 <h1> TYPE1 Request</h1>
 <h1> TYPE2 Request<h1>

2.3）Connector

http/https服務器也能夠同時在多個端口上提供服務, 這就須要引入Connector

1）實現

以下代碼就設置了兩個Connector, 一個使用8080端口,另外一個使用8888端口:

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Server server =newServer(); SelectChannelConnector connector0 =newSelectChannelConnector(); connector0.setPort(8080); connector0.setMaxIdleTime(30000); connector0.setRequestHeaderSize(8192);   SelectChannelConnector connector1 =newSelectChannelConnector(); connector1.setPort(8888); connector1.setMaxIdleTime(30000); connector1.setRequestHeaderSize(8192);   server.setConnectors(newConnector[] { connector0, connector1 }); server.setHandler(newHelloHandler()); server.start(); server.join();

2）測試

瀏覽器上輸入:

http://localhost:8080/*

或者

http://localhost:8888/*

三.https服務器

本節着重講述如何建立https服務器.

3.1）KEYSTORE

使用keytool命令,建立keystore. 例如:

keytool -keystore zenithKS -alias zenith -genkey -keyalg RSA
Enter keystore password:
Re-enter new password:
What is your first and last name?
  [Unknown]:  zenith

What is the name of your organizational unit?
  [Unknown]:  zenith

What is the name of your organization?
  [Unknown]:  zenith

What is the name of your City or Locality?
  [Unknown]:  bj

What is the name of your State or Province?
  [Unknown]:  bj

What is the two-letter country code for this unit?
  [Unknown]:  cn

Is CN=zenith, OU=zenith, O=zenith, L=bj, ST=bj, C=cn correct? (type "yes" or "no")
  [no]:  yes

Enter key password for <zenith>:
        (RETURN if same as keystore password):

須要用戶輸入keystore密碼以及key密碼,最後,會在當前目錄下生成一個zenithKS文件,這就是keystore文件

3.2）SSL CONNECTOR

爲jetty Server設置ssl Connector,須要指定keystore路徑, keystore密碼以及key密碼.

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Server server =newServer(); SslSelectChannelConnector ssl_connector =newSslSelectChannelConnector(); ssl_connector.setPort(8443); SslContextFactory cf = ssl_connector.getSslContextFactory(); cf.setKeyStore("D:\\keystores\\zenithKS"); cf.setKeyStorePassword("password"); cf.setKeyManagerPassword("password"); server.addConnector(ssl_connector); server.start(); server.join();

瀏覽器上輸入:

https://localhost:8443/*

3.3）HTTPS客戶端

HttpClient提供了對SSL的支持, 如下經過擴展HttpClient類實現自動接受證書.

由於這種方法自動接收全部證書，所以存在必定的安全問題，因此在使用這種方法前請仔細考慮您的系統的安全需求。具體的步驟以下：

1) 提供一個自定義的socket factory（test.MySecureProtocolSocketFactory）。這個自定義的類必須實現接口

org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory

在實現接口 的類中調用自定義的

X509TrustManager(test.MyX509TrustManager)

這兩個類能夠在隨本文帶的附件中獲得

2) 建立一個org.apache.commons.httpclient.protocol.Protocol的實例，指定協議名稱和默認的端口號

Protocol myhttps = new Protocol("https", new MySecureProtocolSocketFactory (), 443);

3) 註冊剛纔建立的https協議對象

Protocol.registerProtocol("https ", myhttps);

4) 而後按照普通編程方式打開https的目標地址

代碼下載:

source

具體請參考:

http://www.blogjava.net/happytian/archive/2007/01/18/94553.html

四.參考資料

http://download.eclipse.org/jetty/stable-7/xref/org/eclipse/jetty/embedded/package-summary.html
http://docs.codehaus.org/display/JETTY/How+to+configure+SSL

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