微信公众号网页分享功能开发总结
最近要做一个微信公众号页面分享功能，其中遇到了不少问题，别的先不多说了，直接上代码。
Controller层：
/**
*
*
* 跳转二维码页面 .
*Description:
*
*Author: chendy
*Date: 2018/04/25 上午9:46:14
*@param session
*@return
*
*/
@RequestMapping(value="//personerErweima")
public ModelAndView goErWeiMa(HttpSession session,HttpServletRequest request){
ModelAndView modelAndView = new ModelAndView();
try {
UserInfoVo user = userInfoService.showUserinfoByCon(retrievalCurrentUserInfo(session).getLogId());
modelAndView.addObject("user", user);
modelAndView.setViewName("/wap/userinfo/erweima");//加载页面的一些数据信息
//分享
String url = "/escq/wap/userinfo/personerErweima.html"; //当前页面的路径
String domainAddr = "http://vm3kgx.natappfree.cc"; //域名
String fenxurl=domainAddr+"/escq/wap/userinfo/logInfo/jumpJdjerweima.html"; //要分享的路径（分享出去的链接）
Map params=HttpXmlClient.getShare(request,url);//获取签名
request.setAttribute("params", params);
request.setAttribute("fenxurl", fenxurl);
//分享结束
} catch (Exception e) {
modelAndView.setViewName("wap/userinfo/login");
}
return modelAndView;
} 获取签名：
public class HttpXmlClient {
@SuppressWarnings("unchecked")
public static String getToken(){//获取access_token
String access_token = "";
String grant_type = "client_credential";//获取access_token填写client_credential
String AppId="";//第三方用户唯一凭证 测试号
String secret="";//第三方用户唯一凭证密钥，即appsecret 测试号
//这个url链接地址和参数皆不能变
String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type="+grant_type+"&appid="+AppId+"&secret="+secret;
try {
URL urlGet = new URL(url);
HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
http.setRequestMethod("GET"); // 必须是get方式请求
http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
http.setDoOutput(true);
http.setDoInput(true);
System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
http.connect();
InputStream is = http.getInputStream();
int size = is.available();
byte[] jsonBytes = new byte[size];
is.read(jsonBytes);
String message = new String(jsonBytes, "UTF-8");
Map map = (Map) JSON.parse(message);
// JSONObject demoJson = JSONObject.fromObject(message);
// System.out.println("JSON字符串："+demoJson);
access_token = map.get("access_token");
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return access_token;
}
@SuppressWarnings("unchecked")
public static String getTicket(String access_token) {
String ticket = null;
String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+ access_token +"&type=jsapi";//这个url链接和参数不能变
try {
URL urlGet = new URL(url);
HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
http.setRequestMethod("GET"); // 必须是get方式请求
http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
http.setDoOutput(true);
http.setDoInput(true);
System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
http.connect();
InputStream is = http.getInputStream();
int size = is.available();
byte[] jsonBytes = new byte[size];
is.read(jsonBytes);
String message = new String(jsonBytes, "UTF-8");
Map map = (Map) JSON.parse(message);
// JSONObject demoJson = JSONObject.fromObject(message);
// System.out.println("JSON字符串："+demoJson);
ticket = map.get("ticket");
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return ticket;
}
public static String SHA1(String decript) {
try {
MessageDigest digest = java.security.MessageDigest.getInstance("SHA-1");
digest.update(decript.getBytes());
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
// 字节数组转换为 十六进制 数
for (int i = 0; i < messageDigest.length; i++) {
String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
if (shaHex.length() < 2) {
hexString.append(0);
}
hexString.append(shaHex);
}
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return "";
}
public static String CreateNoncestr() {
String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
String res = "";
for (int i = 0; i < 16; i++) {
Random rd = new Random();
res += chars.charAt(rd.nextInt(chars.length() - 1));
}
return res;
}
public static Map getShare(HttpServletRequest request,String url){
//微信分享授权开始
String appId ="" ;//取项目中配置的公众号id 测试号
String domainAddr = "http://vm3kgx.natappfree.cc";//项目中配置的网站的域名 测试域名
String str = request.getQueryString();
Map map = new HashMap();
map.put("appid", appId);
// String url="http://vm3kgx.natappfree.cc/escq/wap/userinfo/personerErweima.html";
url=domainAddr+url;
map.put("url", url);
String jsapi_token=SingletonUtil.getJsapiTicket(SingletonUtil.getAccessToken());
//生成签名
SortedMap params = new TreeMap();
params.put("timestamp", Long.toString(new Date().getTime()/1000));
params.put("noncestr", HttpXmlClient.CreateNoncestr());
params.put("jsapi_ticket",jsapi_token);
System.out.println("打印数据："+jsapi_token+" url: "+map.get("url"));
params.put("url",map.get("url"));//url地址
StringBuffer sb = new StringBuffer();
Set es = params.entrySet();
Iterator it = es.iterator();
while(it.hasNext()) {
Map.Entry entry = (Map.Entry)it.next();
String k = (String)entry.getKey();
Object v = entry.getValue();
sb.append(k + "=" + v + "&");
}
String signStr = sb.toString().substring(0, sb.toString().length()-1);
String sign = HttpXmlClient.SHA1(signStr);//签名
Map result = new HashMap();
result.put("timestamp",(String)params.get("timestamp"));
result.put("noncestr", (String)params.get("noncestr"));
result.put("signature", sign);
result.put("appId",map.get("appid"));
System.out.println("打印数据："+result);
return result;
}
} SingletonUtil:
import java.util.Date;
import java.util.Map;
public class SingletonUtil { //缓存授权信息
public static String getAccessToken() {
String result = "";
SingletonAccessToken singleton = SingletonAccessToken.getInstance();
Map map = singleton.getMap();
String time = map.get("time");
String accessToken = map.get("access_token");
Long nowDate = new Date().getTime();
if (accessToken != null && time != null && nowDate - Long.parseLong(time) < 7000 * 1000) {
result = accessToken;
} else {
String access_token=HttpXmlClient.getToken();
map.put("time", nowDate + "");
map.put("access_token", access_token);
result = access_token;
}
return result;
}
public static String getJsapiTicket(String accessToken) {
String result = "";
SingletonJsapiTicket singleton = SingletonJsapiTicket.getInstance();
Map map = singleton.getMap();
String time = map.get("time");
String jsapiTicket = map.get("jsapi_ticket");
Long nowDate = new Date().getTime();
if (jsapiTicket != null && time != null && nowDate - Long.parseLong(time) < 7000 * 1000) {
result = jsapiTicket;
} else {
String jsapi_ticket=HttpXmlClient.getTicket(accessToken);
map.put("time", nowDate + "");
map.put("jsapi_ticket", jsapi_ticket);
result = jsapi_ticket;
}
return result;
}
}
Token单例：
import java.util.HashMap;
import java.util.Map;
/**
*
*
* token的单例.
* Description:
*
* Author: yanhongyu
* Date: 2017-6-23上午9:34:38
* Changelog:
* ----------------------------------------------------------------------------
* Ver Date Detail
* ----------------------------------------------------------------------------
* 1.0 2017-6-23上午9:34:38 new file.
*
*/
public class SingletonAccessToken {
//缓存accessToken 和一个 时间
private Map map = new HashMap();
private SingletonAccessToken() {
}
private static SingletonAccessToken single = null;
public static SingletonAccessToken getInstance() {
if (single == null) {
single = new SingletonAccessToken();
}
return single;
}
public Map getMap() {
return map;
}
public void setMap(Map map) {
this.map = map;
}
public static SingletonAccessToken getSingle() {
return single;
}
public static void setSingle(SingletonAccessToken single) {
SingletonAccessToken.single = single;
}
} Ticket单例：
import java.util.HashMap;
import java.util.Map;
/**
*
*
* ticket的单例.
* Description:
*
* Author: yanhongyu
* Date: 2017-6-23上午9:34:38
* Changelog:
* ----------------------------------------------------------------------------
* Ver Date Detail
* ----------------------------------------------------------------------------
* 1.0 2017-6-23上午9:34:38 new file.
*
*/
public class SingletonJsapiTicket {
//缓存jsapi_ticket 和一个 时间
private Map map = new HashMap();
private SingletonJsapiTicket() {
}
private static SingletonJsapiTicket single = null;
public static SingletonJsapiTicket getInstance() {
if (single == null) {
single = new SingletonJsapiTicket();
}
return single;
}
public Map getMap() {
return map;
}
public void setMap(Map map) {
this.map = map;
}
public static SingletonJsapiTicket getSingle() {
return single;
}
public static void setSingle(SingletonJsapiTicket single) {
SingletonJsapiTicket.single = single;
}
} jsp页面：
<%--通过config接口注入权限验证配置--%>
完成以上步骤，完成微信公众号网页分享功能开发，最后上图。
注意：
1、签名时的url是当前网页的路径，一定要一模一样不然会导致签名无效。
2、分享页面的域名要是安全域名下的路径
3、分享路径和分享图片路径一定要正确，如果是404链接会导致分享失败，查代码时会发现都没问题，然而就不成功。