BrowserUtil.java

package com.rambo.tools;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Hashtable;

/**
 * ClassName: Browser (主要是获取浏览器信息的一段代码，可用于 web 端，获取的信息包括浏览器版本、操作系统)
 */
@SuppressWarnings("serial")
public class BrowserUtil extends HttpServlet {
	protected HttpServletRequest request;
	protected HttpSession session;
	protected String userAgent;
	protected String company; //开发浏览器公司名称
	protected String name; //浏览器名称
	protected String version; //浏览器版本号
	protected String os; //电脑操作系统版本号
	@SuppressWarnings("rawtypes")
	private Hashtable supportedLanguages; // Untersttzte Sprachen

	/**
	* <p>Title: </p>
	* <p>Description: </p>
	* param request
	* param session
	*/
	public BrowserUtil(HttpServletRequest request, HttpSession session) {
		this.initialize();
		this.request = request;
		this.session = session;
		this.setUserAgent(this.request.getHeader("User-Agent"));
		this.setCompany();
		this.setName();
		this.setVersion();
		this.setOs();
	}

	/** 
	* Description: TODO(这里用一句话描述这个方法的作用)
	*/
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public void initialize() {
		this.supportedLanguages = new Hashtable(2);
		this.supportedLanguages.put("en", "");
		this.supportedLanguages.put("de", "");
	}

	/** 
	* Description: TODO(设置用户的代理)
	*/
	public void setUserAgent(String httpUserAgent) {
		this.userAgent = httpUserAgent.toLowerCase();
	}

	/** 
	* Description: TODO(根据用户浏览器代理，来获取公司)
	*/
	private void setCompany() {
		if (this.userAgent.indexOf("msie") > -1) {
			this.company = "Microsoft";
		} else if (this.userAgent.indexOf("opera") > -1) {
			this.company = "Opera Software";
		} else if (this.userAgent.indexOf("mozilla") > -1) {
			this.company = "Netscape Communications";
		} else {
			this.company = "unknown";
		}
	}

	public String getCompany() {
		return this.company;
	}

	/** 
	* Description: 根据公司名称获取用户浏览器名称
	*/
	private void setName() {
		if (this.company == "Microsoft") {
			this.name = "Microsoft Internet Explorer";
		} else if (this.company == "Netscape Communications") {
			this.name = "Netscape Navigator";
		} else if (this.company == "Operasoftware") {
			this.name = "Operasoftware Opera";
		} else {
			this.name = "unknown";
		}
	}

	public String getName() {
		return this.name;
	}

	/** 
	* Description: TODO(这里用一句话描述这个方法的作用) 根据用户代理来获取浏览器版本
	* param: TODO (入参描述)
	* return: TODO (返回类型和参数描述)
	* date：2015年8月7日下午3:01:54
	*/
	private void setVersion() {
		int tmpPos;
		String tmpString;
		if (this.company == "Microsoft") {
			String str = this.userAgent.substring(this.userAgent.indexOf("msie") + 5);
			this.version = str.substring(0, str.indexOf(";"));
		} else {
			tmpString = (this.userAgent.substring(tmpPos = (this.userAgent.indexOf("/")) + 1, tmpPos + this.userAgent.indexOf(" "))).trim();
			this.version = tmpString.substring(0, tmpString.indexOf(" "));
		}
	}

	public String getVersion() {
		return this.version;
	}

	/** 
	* Description: TODO(这里用一句话描述这个方法的作用) 根据用户的代理来来来获取操作系统
	* param: TODO (入参描述)
	* return: TODO (返回类型和参数描述)
	* date：2015年8月7日下午3:02:48
	*/
	private void setOs() {
		if (this.userAgent.indexOf("win") > -1) {
			if (this.userAgent.indexOf("windows 95") > -1 || this.userAgent.indexOf("win95") > -1) {
				this.os = "Windows 95";
			}
			if (this.userAgent.indexOf("windows 98") > -1 || this.userAgent.indexOf("win98") > -1) {
				this.os = "Windows 98";
			}
			if (this.userAgent.indexOf("windows nt") > -1 || this.userAgent.indexOf("winnt") > -1) {
				this.os = "Windows NT";
			}
			if (this.userAgent.indexOf("win16") > -1 || this.userAgent.indexOf("windows 3.") > -1) {
				this.os = "Windows 3.x";
			}
		}
	}

	public String getOs() {
		return this.os;
	}
}