代码分享链接帮java code

package com.asflex.utils;


import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

public class ShareLink {

	public static final String KAIXIN = "kaixin";
	public static final String DOUBAN = "douban";
	public static final String SINA = "sina";
	public static final String RENREN = "renren";
	
	private static final Map<String, String> ShareWebs = new HashMap<String, String>();
	static {
		ShareWebs.put(KAIXIN, "http://www.kaixin001.com/repaste/bshare.php?rurl=%s&rtitle=%s&from=");
		
		ShareWebs.put(SINA, "http://v.t.sina.com.cn/share/share.php?url=%s&title=%s&appKey=330242870");
		
		ShareWebs.put(RENREN, "http://share.renren.com/share/buttonshare.do?link=%s&title=%s");
		
		ShareWebs.put(DOUBAN, "http://www.douban.com/recommend/?url=%s&title=%s&v=1&sel=");
	}
	
	/**
	 * 获取分享链接
	 * @param id
	 * @param tag 
	 * @return
	 */
	public static String getLink(String url, String title, String tag) {
		Iterator<String> tags = ShareWebs.keySet().iterator();
		String link = null;
		while(tags.hasNext()) {
			String key = tags.next();
			if(key.equalsIgnoreCase(tag)) {
				link = ShareWebs.get(key);
				break;
			}
		}
		if(link == null) {
			throw new RuntimeException("分享类型tag:\"" + tag + "\"未配置!");
		}
		try {
			return String.format(link, URLEncoder.encode(trimNullString(url), "utf-8"), trimNullString(title));
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
			return String.format(link, trimNullString(url), trimNullString(title));
		}
	}
	
	private static String trimNullString(String val) {
		return val == null || val.trim().length() == 0 ? "" : val.trim();
	}
	
}