1. scene_id必須為整數
1. scene_id必須為整數
2. 微信推送事件
使用者未關注時，進行關注後的事件推送
<xml><ToUserName><![CDATA[toUser]]></ToUserName> //開發者微信号
<FromUserName><![CDATA[FromUser]]></FromUserName> //發送者賬号（openid）
<CreateTime>123456789</CreateTime> //消息建立時間（整型）
<MsgType><![CDATA[event]]></MsgType> //消息類型 event
<Event><![CDATA[subscribe]]></Event> //事件類型（subscribe）
<EventKey><![CDATA[qrscene_123 ]]></EventKey> //事件KEY值，qrscene_為字首，後面為二維碼參數值
<Ticket><![CDATA[TICKET]]></Ticket> //二維碼ticke值，可以用來換取二維碼圖檔
</xml>
紅色背景的值和上面紅線中scene_id的值一樣
3接收微信推送事件并解析xml字元串
@RequestMapping(value = "/",method = RequestMethod.POST)
public String getMessage(HttpServletRequest request,HttpServletResponse response,Model m){
FileOutputStream fileOutputStream=null;
BufferedReader buffer=null;
System.out.println("log................");
try {
///var/ww/tmp/1.txt
fileOutputStream=new FileOutputStream(new File("d:/2.txt"));
buffer=request.getReader();
String line;
String result=null;
while ((line = buffer.readLine())!= null) {
result += line;
}
System.out.println(result);
Document doc=DocumentHelper.parseText(result.substring(4));
Element rescode = doc.getRootElement();
String ToUserName = rescode.elementText("ToUserName");
String FromUserName = rescode.elementText("FromUserName");
String MsgType = rescode.elementText("MsgType");
String Event = rescode.elementText("Event");
String EventKey = rescode.elementText("EventKey");
String Ticket = rescode.elementText("Ticket");
System.out.println("Event"+Event);
String str="log......";
str=str+result+ToUserName+FromUserName+MsgType+Event+"//evnetkey>>"+EventKey;
// if(("SCAN").equals(Event)) {
fileOutputStream.write(str.getBytes());
// }
// System.out.println("result="+result.length());
System.out.println("log................1"+ToUserName+FromUserName);
if (null != EventKey&&!EventKey.equals("")) {
//System.out.println(EventKey.substring(0, 4));
if (EventKey.substring(0,8).equals("qrscene_")) {
Integer uid = Integer.parseInt(EventKey.substring(8));
Users user = usersService.selectByPrimaryKey(uid);
Association association = new Association();
association.setHostid(user.getOpenid());
association.setSubid(FromUserName);
if (null==associationService.selectsubId(FromUserName)) {
associationService.insert(association);
//m.addAttribute("hostId",user.getOpenid());
}
//return "redirect:showAssociation/"+user.getOpenid();
}
}
}catch(Exception e){
e.printStackTrace();
logger.error(e);
}finally {
try {
if (buffer != null) {
buffer.close();
}
if (fileOutputStream != null) {
fileOutputStream.close();
}
}catch (Exception e){
logger.error(e);
}
}
return null;
} 4．在jsp頁面顯示二維碼
<img src="data:image/jpg;base64,${img}" class="erma" alt="二維碼"> 5工具類代碼
public class WeixinUtil {
public static String httpPostRequest( String token,String scene_id)
{ String result="";
try {
String Post_URL = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token="+token;
URL url =new URL(Post_URL);
HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("POST");
Map map1=new HashMap();
map1.put("scene_id",scene_id);
Map map=new HashMap();
map.put("scene",map1);
JSONObject jo=new JSONObject();
jo.put("expire_seconds", 3600);
jo.put("action_name", "QR_SCENE");
jo.put("action_info", map);
//POST請求
DataOutputStream out = new DataOutputStream(
connection.getOutputStream());
out.writeBytes(jo.toJSONString());
BufferedReader in = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
System.out.println(result);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public static String getImageQRCode(String ticket){
String requestUrl="https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket="+ticket;
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
try{
URL url = new URL(requestUrl);
HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setUseCaches(false);
// 設定請求方式（GET/POST）
httpUrlConn.setRequestMethod("GET");
httpUrlConn.connect();
// 将傳回的輸入流轉換成字元串
InputStream inputStream = httpUrlConn.getInputStream();
BufferedInputStream bis=new BufferedInputStream(inputStream);
byte[] buffer = new byte[1024*4];
int len = 0;
while( (len=bis.read(buffer)) != -1 ){
outStream.write(buffer, 0, len);
}
bis.close();
// 釋放資源
inputStream.close();
inputStream = null;
httpUrlConn.disconnect();
}catch(Exception e){
e.printStackTrace();
}
return encode(outStream.toByteArray());
} public static byte[] readInputStream(InputStream inStream) throws Exception{
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
//建立一個Buffer字元串
byte[] buffer = new byte[1024];
//每次讀取的字元串長度，如果為-1，代表全部讀取完畢
int len = 0;
//使用一個輸入流從buffer裡把資料讀取出來
while( (len=inStream.read(buffer)) != -1 ){
//用輸出流往buffer裡寫入資料，中間參數代表從哪個位置開始讀，len代表讀取的長度
outStream.write(buffer, 0, len);
}
//關閉輸入流
inStream.close();
//把outStream裡的資料寫入記憶體
return outStream.toByteArray();
}
public static String encode(final byte[] bytes) {
return new String(Base64.encodeBase64(bytes));
} ．在jsp頁面顯示二維碼
<img src="data:image/jpg;base64,${img}" class="erma" alt="二維碼"> [X1]和上面紅線中scene_id的值一樣
![GitHub開源！《深度學習面試指南》[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)