微信登录开发参考网址
我的微信登录开发流程
配置一些基本数据
/**
* 配置好一些需要用到的数据
*/
public class WechatConfig {
//第三方用户唯一凭证，即appid
public static final String APPID = "wxee746fb0e8f48f44";
//第三方用户唯一凭证密钥，即appsecret
public static final String SECRET = "bed208cba5e32cf8e92bbc2c96bd16da";
//获取access_token
public static final String ACCESS_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=SECRET";
// 临时二维码
public static final String QR_SCENE = "QR_SCENE";
// 临时的字符串参数值
public static final String QR_STR_SCENE = "QR_STR_SCENE";
// 永久二维码
public static final String QR_LIMIT_SCENE = "QR_LIMIT_SCENE";
// 永久二维码(字符串)
public static final String QR_LIMIT_STR_SCENE = "QR_LIMIT_STR_SCENE";
// 通过accessToken 以及json 创建二维码 获取ticket
public static final String CREATE_TICKET_PATH = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=ACCESS_TOKEN";
// 通过ticket换取二维码
public static final String SHOWQR_CODE_PATH = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=TICKET";
//此接口用于获取用户个人信息 UnionID机制
public static final String GET_UNIONID_URL = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=ACCESS_TOKEN&openid=OPENID";
}
生成二维码
- 获取access_token,access_token是公众号的全局唯一接口调用凭据，公众号调用各接口时都需使用access_token。
- 根据access_token 以及生成二维码需要的参数，生成带参数的二维码的ticket
- 获取二维码ticket后，通过ticket换取二维码图片url展示到前端
/**
* 生成带参数的二维码，扫描关注微信公众号，自动登录网站
* @param modelMap
* @return
* @throws Exception
*/
@RequestMapping(value = "/wechat/login")
@ResponseBody
public Result wechatMpLogin(ModelMap modelMap) throws Exception {
// String accessToken = wechatService.getAccessToken();
String scene_str = "perFei." + new Date().getTime();
String ticket = wechatService.createTempStrTicket("600", scene_str);
if(ticket != null){
String qrcodeUrl = wechatService.showqrcode(ticket);
modelMap.put("qrcodeUrl", qrcodeUrl); //二维码的图片路径
}
modelMap.put("scene_str", scene_str);
return Result.ok(null, modelMap);
}
/**
* 生成带参数的二维码的ticket
* @param expire_seconds
* @param scene_str
* @return
* @throws Exception
*/
@Override
public String createTempStrTicket(String expire_seconds,String scene_str) throws Exception {
String access_token = this.getAccessToken();
String url = WechatConfig.CREATE_TICKET_PATH;
url = url.replaceAll("ACCESS_TOKEN",access_token);
Map<String,String> strMap = new HashMap<String,String>();
strMap.put("scene_str",scene_str);
Map<String,Map<String,String>> mapMap = new HashMap<String,Map<String,String>>();
mapMap.put("scene", strMap);
Map<String,Object> paramsMap = new HashMap<String,Object>();
paramsMap.put("expire_seconds", expire_seconds);
paramsMap.put("action_name", WechatConfig.QR_STR_SCENE);
paramsMap.put("action_info", mapMap);
String data = new Gson().toJson(paramsMap);
// 发送请求
Map<String, Object> map = HttpClient.httpClientPost(url, data);
String ticket = (String) map.get("ticket");
return ticket==null?null:ticket;
}
/**
* 获取access_tocken GET方法
* @return
* @throws Exception
*/
@Override
public String getAccessToken() throws Exception {
String url = WechatConfig.ACCESS_TOKEN_URL;
url = url.replaceAll("APPID", WechatConfig.APPID);
url = url.replaceAll("SECRET", WechatConfig.SECRET);
// 发送请求
HttpClient client = new HttpClient(url);
// 发送get请求
client.get();
// 获取到请求的结果 json格式的字符串，把json格式的字符串转换成对象或者Map集合
String token_content = client.getContent();
Map<String, Object> map = JSON.parseObject(token_content, Map.class);
return map.get("access_token").toString();
}
/**
* 获取二维码ticket后，通过ticket换取二维码图片展示
* @param ticket
* @return
*/
@Override
public String showqrcode(String ticket) {
String qrcodeUrl = WechatConfig.SHOWQR_CODE_PATH;
try {
String encode = URLEncoder.encode(ticket, "utf-8");
qrcodeUrl = qrcodeUrl.replaceAll("TICKET",encode);
}catch (UnsupportedEncodingException e){
e.printStackTrace();
}
return qrcodeUrl;
}
验证检测是否扫描了二维码
- 主要是通过生成的二维码的参数进行判断用户是否有过扫描
/**
* 检测登录
* @param scene_str
* @return
*/
@RequestMapping("/wechat/checkLogin")
@ResponseBody
public Map<String, Object> wechatMpCheckLogin(String scene_str) {
// 根据scene_str查询数据库，获取对应记录
WechatUser wechat = wechatService.getWechatUser(scene_str);
Map<String, Object> returnMap = new HashMap<String, Object>();
if (wechat != null ) {
returnMap.put("openid", wechat.getOpenid());
returnMap.put("result", "true");//登录成功
} else {
returnMap.put("result", "false");//登录失败
}
return returnMap;
}
@Override
public WechatUser getWechatUser(String scene_str) {
WechatUser wechatUser = wechatMapper.selectBySceneStr(scene_str);
if(wechatUser != null){
return wechatUser;
}
return wechatUser;
}
微信验证签名信息和接收、处理、响应由微信服务器转发的用户发送给公众帐号的消息
/**
* 自定义token, 用作生成签名,从而验证安全性
*/
private static final String TOKEN = "perFei";
/**
* 回调函数 post请求 接受、处理、响应微信信息
* @param request
* @param response
* @throws Exception
*/
@PostMapping(value = "/wechat/callback")
public void callbackPost(HttpServletRequest request, HttpServletResponse response) throws Exception{
// TODO 接收、处理、响应由微信服务器转发的用户发送给公众帐号的消息
// 将请求、响应的编码均设置为UTF-8（防止中文乱码）
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
System.out.println("请求进入");
String result = "";
try {
//获得解析微信发来的请求
Map<String,String> map = MessageUtil.parseXml(request);
if (map != null && map.get("FromUserName").toString() != null){
// 通过openid获取用户信息
Map<String, Object> wechatUserMap = wechatService.getUserInfoByOpenid(map.get("FromUserName"));
// 将数据写入到数据库中
String event = map.get("EventKey");
wechatService.insertWechatUser(wechatUserMap,event);
}
System.out.println("开始构造消息");
//根据消息类型 构造返回消息
result = MessageUtil.buildXml(map);
System.out.println(result);
if(result.equals("")){
result = "未正确响应";
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("发生异常："+ e.getMessage());
}
response.getWriter().println(result);
}
/**
* 回调函数 get请求 验证签名信息
* @param request
* @throws Exception
*/
@GetMapping(value = "/wechat/callback")
public void callbackGet(HttpServletRequest request, HttpServletResponse response) throws Exception{
// TODO 验证接口配置信息
System.out.println("-----开始校验签名-----");
// 接收微信服务器发送请求时传递过来的参数
//微信加密签名，signature结合了开发者填写的token参数和请求中的timestamp参数、nonce参数。
String signature = request.getParameter("signature");
String timestamp = request.getParameter("timestamp"); //时间戳
String nonce = request.getParameter("nonce"); //随机数
String echostr = request.getParameter("echostr");//随机字符串
//将token、timestamp、nonce三个参数进行字典序排序
//并拼接为一个字符串
String sortStr = sort(TOKEN,timestamp,nonce);
//字符串进行shal加密
String mySignature = shal(sortStr);
// 校验微信服务器传递过来的签名 和 加密后的字符串是否一致, 若一致则签名通过
if(!"".equals(signature) && !"".equals(mySignature) && signature.equals(mySignature)){
System.out.println("-----签名校验通过-----");
response.getWriter().write(echostr);
response.getWriter().flush();
}else {
System.out.println("-----校验签名失败-----");
}
}
/**
* 参数排序
* @param token
* @param timestamp
* @param nonce
* @return
*/
public String sort(String token, String timestamp, String nonce) {
String[] strArray = {token, timestamp, nonce};
Arrays.sort(strArray);
StringBuilder sb = new StringBuilder();
for (String str : strArray) {
sb.append(str);
}
return sb.toString();
}
/**
* 字符串进行shal加密
* @param str
* @return
*/
public String shal(String str){
try {
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.update(str.getBytes());
byte messageDigest[] = digest.digest();
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 "";
}
工具类
package com.zcf.utils;
import com.google.gson.Gson;
import org.apache.commons.httpclient.methods.ByteArrayRequestEntity;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
/**
* 可以发送Http请求的工具类（可以发送Https请求）
*/
public class HttpClient {
// 请求的地址
private String url;
// 请求的参数
private Map<String, String> param;
private int statusCode;
// 请求后，获取到的响应内容
private String content;
private String xmlParam;
private boolean isHttps;
public boolean isHttps() {
return isHttps;
}
public void setHttps(boolean isHttps) {
this.isHttps = isHttps;
}
public String getXmlParam() {
return xmlParam;
}
public void setXmlParam(String xmlParam) {
this.xmlParam = xmlParam;
}
public HttpClient(String url, Map<String, String> param) {
this.url = url;
this.param = param;
}
public HttpClient(String url) {
this.url = url;
}
public void setParameter(Map<String, String> map) {
param = map;
}
public void addParameter(String key, String value) {
if (param == null)
param = new HashMap<String, String>();
param.put(key, value);
}
/**
* 发送post请求
* @throws ClientProtocolException
* @throws IOException
*/
public void post() throws ClientProtocolException, IOException {
HttpPost http = new HttpPost(url);
setEntity(http);
execute(http);
}
/**
* 发送put请求
* @throws ClientProtocolException
* @throws IOException
*/
public void put() throws ClientProtocolException, IOException {
HttpPut http = new HttpPut(url);
setEntity(http);
execute(http);
}
/**
* 发送get请求
* @throws ClientProtocolException
* @throws IOException
*/
public void get() throws ClientProtocolException, IOException {
if (param != null) {
StringBuilder url = new StringBuilder(this.url);
boolean isFirst = true;
for (String key : param.keySet()) {
if (isFirst)
url.append("?");
else
url.append("&");
url.append(key).append("=").append(param.get(key));
}
this.url = url.toString();
}
HttpGet http = new HttpGet(url);
execute(http);
}
/**
* set http post,put param
*/
private void setEntity(HttpEntityEnclosingRequestBase http) {
if (param != null) {
List<NameValuePair> nvps = new LinkedList<NameValuePair>();
for (String key : param.keySet())
nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
}
if (xmlParam != null) {
http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
}
}
/**
* 真正发送请求的方法
* @param http
* @throws ClientProtocolException
* @throws IOException
*/
private void execute(HttpUriRequest http) throws ClientProtocolException,
IOException {
CloseableHttpClient httpClient = null;
try {
if (isHttps) {
SSLContext sslContext = new SSLContextBuilder()
.loadTrustMaterial(null, new TrustStrategy() {
// 信任所有
public boolean isTrusted(X509Certificate[] chain,
String authType)
throws CertificateException {
return true;
}
}).build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
sslContext);
httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
.build();
} else {
httpClient = HttpClients.createDefault();
}
CloseableHttpResponse response = httpClient.execute(http);
try {
if (response != null) {
if (response.getStatusLine() != null)
statusCode = response.getStatusLine().getStatusCode();
HttpEntity entity = response.getEntity();
// 响应内容
content = EntityUtils.toString(entity, Consts.UTF_8);
}
} finally {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
httpClient.close();
}
}
public int getStatusCode() {
return statusCode;
}
public String getContent() throws ParseException, IOException {
return content;
}
/**
* httpClient-Post请求
* @param url 请求地址
* @param params post参数
* @return
* @throws Exception
*/
public static Map<String, Object> httpClientPost(String url, String params) throws Exception {
org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient();
client.getParams().setContentCharset("UTF-8");
PostMethod httpPost = new PostMethod(url);
try {
RequestEntity requestEntity = new ByteArrayRequestEntity(params.getBytes("utf-8"));
httpPost.setRequestEntity(requestEntity);
client.executeMethod(httpPost);
String response = httpPost.getResponseBodyAsString();
Map<String, Object> map = new Gson().fromJson(response, Map.class);
return map;
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
httpPost.releaseConnection();
}
}
/**
* httpClient-Get请求
* @param url 请求地址
* @return
* @throws Exception
*/
public static Map<String, Object> httpClientGet(String url) throws Exception {
org.apache.commons.httpclient.HttpClient client = new org.apache.commons.httpclient.HttpClient();
client.getParams().setContentCharset("UTF-8");
GetMethod httpGet = new GetMethod(url);
try {
client.executeMethod(httpGet);
String response = httpGet.getResponseBodyAsString();
Map<String, Object> map = new Gson().fromJson(response, Map.class);
return map;
} catch (Exception e) {
throw e;
} finally {
httpGet.releaseConnection();
}
}
}
package com.zcf.utils;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import javax.servlet.http.HttpServletRequest;
import java.io.InputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author zhangchuanfei
* @create 2020-04-12-23:46
*/
public class MessageUtil {
/**
* 解析微信发来的请求（XML）
* @param request
* @return map
* @throws Exception
*/
public static Map<String,String> parseXml(HttpServletRequest request) throws Exception {
// 将解析结果存储在HashMap中
Map<String,String> map = new HashMap<String,String>();
// 从request中取得输入流
InputStream inputStream = request.getInputStream();
//System.out.println("获取输入流");
// 读取输入流
SAXReader reader = new SAXReader();
Document document = reader.read(inputStream);
// 得到xml根元素
Element root = document.getRootElement();
// 得到根元素的所有子节点
List<Element> elementList = root.elements();
// 遍历所有子节点
for (Element e : elementList) {
System.out.println(e.getName() + "|" + e.getText());
map.put(e.getName(), e.getText());
}
// 释放资源
inputStream.close();
inputStream = null;
return map;
}
/**
* 根据消息类型 构造返回消息
*/
public static String buildXml(Map<String,String> map) {
String result;
String msgType = map.get("MsgType").toString();
//System.out.println("MsgType:" + msgType);
if(msgType.toUpperCase().equals("TEXT")){
result = buildTextMessage(map, "亲，有什么可以帮到您的?");
}else{
String fromUserName = map.get("FromUserName");
// 开发者微信号
String toUserName = map.get("ToUserName");
result = String
.format(
"<xml>" +
"<ToUserName><![CDATA[%s]]></ToUserName>" +
"<FromUserName><![CDATA[%s]]></FromUserName>" +
"<CreateTime>%s</CreateTime>" +
"<MsgType><![CDATA[text]]></MsgType>" +
"<Content><![CDATA[%s]]></Content>" +
"</xml>",
fromUserName, toUserName, getUtcTime(),
"登录成功");
// "请回复如下关键词：\n文本\n图片\n语音\n视频\n音乐\n图文");
}
return result;
}
/**
* 构造文本消息
*
* @param map
* @param content
* @return
*/
private static String buildTextMessage(Map<String,String> map, String content) {
//发送方帐号
String fromUserName = map.get("FromUserName");
// 开发者微信号
String toUserName = map.get("ToUserName");
/**
* 文本消息XML数据格式
*/
return String.format(
"<xml>" +
"<ToUserName><![CDATA[%s]]></ToUserName>" +
"<FromUserName><![CDATA[%s]]></FromUserName>" +
"<CreateTime>%s</CreateTime>" +
"<MsgType><![CDATA[text]]></MsgType>" +
"<Content><![CDATA[%s]]></Content>" + "</xml>",
fromUserName, toUserName, getUtcTime(), content);
}
private static String getUtcTime() {
Date dt = new Date();// 如果不需要格式,可直接用dt,dt就是当前系统时间
DateFormat df = new SimpleDateFormat("yyyyMMddhhmm");// 设置显示格式
String nowTime = df.format(dt);
long dd = (long) 0;
try {
dd = df.parse(nowTime).getTime();
} catch (Exception e) {
}
return String.valueOf(dd);
}
}
package com.zcf.utils;
import lombok.AllArgsConstructor;
import lombok.Data;
import java.io.Serializable;
/**
* @author zhangchuanfei
* @create 2020-04-19-10:25
*/
@Data
@AllArgsConstructor
public class Result implements Serializable {
private static final long serialVersionUID = 1L;
/**
* 状态码
*/
private Integer code;
/**
* 信息
*/
private String info;
/**
* 数据
*/
private Object data;
public static Result ok(String info, Object data) {
return new Result(ResultEnum.OK.getCode(), info, data);
}
public static Result ok() {
return ok(null,null);
}
public static Result error(Integer code, String info) {
return error(code, info,null);
}
public static Result error(Integer code, String info, Object data) {
return new Result(code, info, data);
}
public static Result error(ResultEnum resultEnum) {
return error(resultEnum,null);
}
public static Result error(ResultEnum resultEnum, Object data) {
return error(resultEnum.getCode(), resultEnum.getInfo(),data);
}
}
开发中需要有自己的服务器资源，我使用的是NATAPP内网穿透，使用的教程很简单，百度一下就可以了。
到这里基本上就完成了，不用多说了，登录成功之后根据个人的需要返回页面。
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