1 import java.io.BufferedInputStream;
2 import java.io.File;
3 import java.io.FileOutputStream;
4 import java.net.URL;
5 import java.util.Date;
6
7 import javax.net.ssl.HttpsURLConnection;
8
9 import net.sf.json.JSONObject;
10
11 /**
12 * 二维码生成和读的工具类
13 *
14 */
15 public class QRcode {
16 /**
17 * 永久二维码
18 *
19 * @param accessToken
20 * @param sceneId场景iD 1~10000
21 * @return
22 */
23 public static String createForeverTicket(String accessToken, String barId) {
24 String ticke = null;
25 // 拼接请求地址
26 String requestUrl = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=TOKEN";
27 requestUrl = requestUrl.replace("TOKEN", accessToken);
28 // 需要提交json数据
29 //String jsonmsg = "{\"action_name\": \"QR_LIMIT_STR_SCENE\",\"action_info\":{\"scene\":{\"scene_id\":%d}}}";
30 String jsonmsg = "{\"action_name\": \"QR_LIMIT_STR_SCENE\", \"action_info\": {\"scene\": {\"scene_str\": \""+barId+"\"}}}";
31 // 创建永久带参二维码
32 JSONObject jsonObject = WeixinUtil.httpRequest(requestUrl, "POST", String.format(jsonmsg, barId));
33 if (null != jsonObject) {
34 try {
35 ticke = jsonObject.getString("ticket");
36 System.out.println("永久带参二维码ticket成功=" + ticke);
37 } catch (Exception e) {
38 int err = jsonObject.getInt("errcode");
39 String errormsg = jsonObject.getString("errmsg");
40 System.out.println("永久带参二维码ticket失败失败errcode=" + err + "errmsg=" + errormsg);
41 }
42 }
43 return ticke;
44 }
45
46 public static String getRQcode(String ticket, String savepath) {
47 String filepath = null;
48 String requestUrl = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=TICKET";
49 requestUrl = requestUrl.replace("TICKET", ticket);
50 try {
51 URL url = new URL(requestUrl);
52 HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
53 conn.setDoInput(true);
54 conn.setRequestMethod("GET");
55 if (!savepath.endsWith("/")) {
56 savepath += "/";
57 }
58 // 将ticket 作为文件名
59 filepath = savepath + ticket + new Date().getTime() + ".jpg";
60 // 将微信服务器返回的输入流写入文件
61 BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());
62 FileOutputStream fos = new FileOutputStream(new File(filepath));
63 byte[] buf = new byte[8096];
64 int size = 0;
65 while ((size = bis.read(buf)) != -1)
66 fos.write(buf, 0, size);
67 fos.close();
68 bis.close();
69 System.out.println(conn);
70 conn.disconnect();
71 System.out.println("根据ticket换取二维码成功");
72 } catch (Exception e) {
73 filepath = null;
74 System.out.println("根据ticket换取二维码失败" + e);
75 }
76 return filepath;
77 }
78
79 public static void main(String[] args) {
80 String assesstoken = WeixinUtil.getAccessToken(appid, secret);
81 String ticket = createForeverTicket(assesstoken, "你要携带的参数");
82 String path = "d:/workspace/userfiles/ticket";
83 getRQcode(ticket, path);
84 }
85
86 }
1 public static String getAccessToken(String appid, String secret) {
2 String accessTokenUrl = "https://api.weixin.qq.com/cgi-bin/token?" + "grant_type=client_credential" +
3 // 此处填写你自己的appid
4 "&appid=" + appid +
5 // 此处填写你自己的appsecret
6 "&secret=" + secret;
7 JSONObject jsonObject = httpUtils.httpsRequest(accessTokenUrl, "GET", null);
8 return (String) jsonObject.get("access_token");
9 }
1 /**
2 * 发起https请求并获取结果
3 *
4 * @param requestUrl 请求地址
5 * @param requestMethod 请求方式（GET、POST）
6 * @param outputStr 提交的数据
7 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
8*/
9 public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {
10 JSONObject jsonObject = null;
11 StringBuffer buffer = new StringBuffer();
12 try {
13 // 创建SSLContext对象，并使用我们指定的信任管理器初始化
14 TrustManager[] tm = { new MyX509TrustManager() };
15 SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
16 sslContext.init(null, tm, new java.security.SecureRandom());
17 // 从上述SSLContext对象中得到SSLSocketFactory对象
18 SSLSocketFactory ssf = sslContext.getSocketFactory();
19
20 URL url = new URL(requestUrl);
21 HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
22 httpUrlConn.setSSLSocketFactory(ssf);
23
24 httpUrlConn.setDoOutput(true);
25 httpUrlConn.setDoInput(true);
26 httpUrlConn.setUseCaches(false);
27 // 设置请求方式（GET/POST）
28 httpUrlConn.setRequestMethod(requestMethod);
29
30 if ("GET".equalsIgnoreCase(requestMethod))
31 httpUrlConn.connect();
32
33 // 当有数据需要提交时
34 if (null != outputStr) {
35 OutputStream outputStream = httpUrlConn.getOutputStream();
36 // 注意编码格式，防止中文乱码
37 outputStream.write(outputStr.getBytes("UTF-8"));
38 outputStream.close();
39 }
40
41 // 将返回的输入流转换成字符串
42 InputStream inputStream = httpUrlConn.getInputStream();
43 InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
44 BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
45
46 String str = null;
47 while ((str = bufferedReader.readLine()) != null) {
48 buffer.append(str);
49 }
50 bufferedReader.close();
51 inputStreamReader.close();
52 // 释放资源
53 inputStream.close();
54 inputStream = null;
55 httpUrlConn.disconnect();
56 jsonObject = JSONObject.fromObject(buffer.toString());
57 } catch (ConnectException ce) {
58 log.error("Weixin server connection timed out.");
59 } catch (Exception e) {
60 log.error("https request error:{}", e);
61 }
62 return jsonObject;
63 }
