微信公众号生成带参数的二维码

最近写了关于微信公众号生成带参数的二维码的一个工具类，直接上代码：

import java.io.IOException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

import net.sf.json.JSONObject;

import org.apache.http.ParseException;
import org.apache.log4j.Logger;

import com.qicha.model.weixin.AccessToken;
/**
 * 
 * @author pc  dell
 * 创建微信公众号二维码工具类
 *
 */
public class QrCodeUtil {
	private static Logger logger = Logger.getLogger(QrCodeUtil.class);
	
	//创建二维码
	private static final String CREATE_QRCODE_URL = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=TOKEN";
	private static final String SHOWCODE_PATH = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=TICKET";
	
	/***
	 * 创建永久二维码Ticket
	 * @param sceneStr  场景值id
	 * @param accessToken  微信全局票据
	 * @return
	 * @throws ParseException
	 * @throws IOException
	 */
	public static  String createForeverStrTicket(String sceneStr,String accessToken) throws ParseException, IOException {
		String ticket="";
		TreeMap<String,String> params = new TreeMap<String,String>(); 
		params.put("access_token", accessToken); 
		String url = CREATE_QRCODE_URL.replace("TOKEN", accessToken); 
		Map<String,String> intMap = new HashMap<String,String>(); 
		intMap.put("scene_str",sceneStr); 
		
		Map<String,Map<String,String>> mapMap = new HashMap<String,Map<String,String>>(); 
		mapMap.put("scene", intMap); 
		
		Map<String,Object> paramsMap = new HashMap<String,Object>(); 
		paramsMap.put("action_name", "QR_LIMIT_STR_SCENE");
		paramsMap.put("action_info", mapMap); 
		String data =JSONObject.fromObject(paramsMap).toString(); 
		logger.info("data:"+data);
		JSONObject jsonObject = WeixinUtil.doPostStr(url, data); 
		logger.info("jsonObject:"+jsonObject);
		if(jsonObject!=null){ 
			ticket = jsonObject.optString("ticket"); 
		} 
		return ticket;
	}
	
	
	/***
	 * 根据ticket票据，生成二维码图片路径(获取时用get方式)
	 * @param ticket
	 * @return 图片路径
	 * @throws ParseException
	 * @throws IOException
	 */
	public static String showQrCode(String ticket) throws ParseException, IOException {
		ticket = URLEncoder.encode(ticket, "UTF-8"); 
		String url = SHOWCODE_PATH.replace("TICKET",ticket);
		
		return url; 
	}
	
	
	public static void main(String[] args) throws ParseException, IOException {
		//获取全局票据
		String accessToken = "";
		String ticked = createForeverStrTicket("10",accessToken);
		logger.info("永久二维码ticked："+ticked);
		String url = showQrCode(ticked);
		logger.info("永久二维码图片路径:"+url);//直接浏览器访问，下载即可
	}
}

上边

WeixinUtil.doPostStr方法：

/**
	 * POST请求
	 * @param url
	 * @param outStr
	 * @return
	 * @throws ParseException
	 * @throws IOException
	 */
	public static JSONObject doPostStr(String url,String outStr) throws ParseException, IOException{
		HttpClient client = HttpClients.createDefault(); 
		HttpPost httpost = new HttpPost(url);
		JSONObject jsonObject = null;
		httpost.setEntity(new StringEntity(outStr,"UTF-8"));
		HttpResponse response = client.execute(httpost);
		HttpEntity entity = response.getEntity();
		if (entity != null) {
			String result = EntityUtils.toString(response.getEntity(),"UTF-8");
			jsonObject = JSONObject.fromObject(result);
		}
		return jsonObject;
	}