网站应用微信登录
原理：
网站应用微信登录是基于OAuth2.0协议标准构建的微信OAuth2.0授权登录系统。
获取access_token时序图：
实现：（cv区）
<li>
<a
id="weixin"
class="weixin"
target="_blank"
href="http://localhost:8150/api/ucenter/wx/login"
><i class="iconfont icon-weixin"
/></a>
</li>
<!--httpclient-->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.1</version>
</dependency>
<!--commons-io-->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.6</version>
</dependency>
<!--gson-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.2</version>
</dependency>
需要替换为公司的微信信息：
wx:
open:
# 微信开放平台 appid
app_id: wxed9954c0********
# 微信开放平台 appsecret
app_secret: a7482517235173ddb40837**********
# 微信开放平台 重定向url（****.****需要在微信开放平台配置）
redirect_url: http://****.****/api/ucenter/wx/callback
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.config.RequestConfig.Builder;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ConnectTimeoutException;
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.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* 依赖的jar包有：commons-lang-2.6.jar、httpclient-4.3.2.jar、httpcore-4.3.1.jar、commons-io-2.4.jar
* @author zhaoyb
*
*/
public class HttpClientUtils {
public static final int connTimeout=10000;
public static final int readTimeout=10000;
public static final String charset="UTF-8";
private static HttpClient client = null;
static {
PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
cm.setMaxTotal(128);
cm.setDefaultMaxPerRoute(128);
client = HttpClients.custom().setConnectionManager(cm).build();
}
public static String postParameters(String url, String parameterStr) throws ConnectTimeoutException, SocketTimeoutException, Exception{
return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
}
public static String postParameters(String url, String parameterStr,String charset, Integer connTimeout, Integer readTimeout) throws ConnectTimeoutException, SocketTimeoutException, Exception{
return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
}
public static String postParameters(String url, Map<String, String> params) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
return postForm(url, params, null, connTimeout, readTimeout);
}
public static String postParameters(String url, Map<String, String> params, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
return postForm(url, params, null, connTimeout, readTimeout);
}
public static String get(String url) throws Exception {
return get(url, charset, null, null);
}
public static String get(String url, String charset) throws Exception {
return get(url, charset, connTimeout, readTimeout);
}
/**
* 发送一个 Post 请求, 使用指定的字符集编码.
*
* @param url
* @param body RequestBody
* @param mimeType 例如 application/xml "application/x-www-form-urlencoded" a=1&b=2&c=3
* @param charset 编码
* @param connTimeout 建立链接超时时间,毫秒.
* @param readTimeout 响应超时时间,毫秒.
* @return ResponseBody, 使用指定的字符集编码.
* @throws ConnectTimeoutException 建立链接超时异常
* @throws SocketTimeoutException 响应超时
* @throws Exception
*/
public static String post(String url, String body, String mimeType,String charset, Integer connTimeout, Integer readTimeout)
throws ConnectTimeoutException, SocketTimeoutException, Exception {
HttpClient client = null;
HttpPost post = new HttpPost(url);
String result = "";
try {
if (StringUtils.isNotBlank(body)) {
HttpEntity entity = new StringEntity(body, ContentType.create(mimeType, charset));
post.setEntity(entity);
}
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
post.setConfig(customReqConf.build());
HttpResponse res;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(post);
} else {
// 执行 Http 请求.
client = HttpClientUtils.client;
res = client.execute(post);
}
result = IOUtils.toString(res.getEntity().getContent(), charset);
} finally {
post.releaseConnection();
if (url.startsWith("https") && client != null&& client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
return result;
}
/**
* 提交form表单
*
* @param url
* @param params
* @param connTimeout
* @param readTimeout
* @return
* @throws ConnectTimeoutException
* @throws SocketTimeoutException
* @throws Exception
*/
public static String postForm(String url, Map<String, String> params, Map<String, String> headers, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
HttpClient client = null;
HttpPost post = new HttpPost(url);
try {
if (params != null && !params.isEmpty()) {
List<NameValuePair> formParams = new ArrayList<NameValuePair>();
Set<Entry<String, String>> entrySet = params.entrySet();
for (Entry<String, String> entry : entrySet) {
formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);
post.setEntity(entity);
}
if (headers != null && !headers.isEmpty()) {
for (Entry<String, String> entry : headers.entrySet()) {
post.addHeader(entry.getKey(), entry.getValue());
}
}
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
post.setConfig(customReqConf.build());
HttpResponse res = null;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(post);
} else {
// 执行 Http 请求.
client = HttpClientUtils.client;
res = client.execute(post);
}
return IOUtils.toString(res.getEntity().getContent(), "UTF-8");
} finally {
post.releaseConnection();
if (url.startsWith("https") && client != null
&& client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
}
/**
* 发送一个 GET 请求
*
* @param url
* @param charset
* @param connTimeout 建立链接超时时间,毫秒.
* @param readTimeout 响应超时时间,毫秒.
* @return
* @throws ConnectTimeoutException 建立链接超时
* @throws SocketTimeoutException 响应超时
* @throws Exception
*/
public static String get(String url, String charset, Integer connTimeout,Integer readTimeout)
throws ConnectTimeoutException,SocketTimeoutException, Exception {
HttpClient client = null;
HttpGet get = new HttpGet(url);
String result = "";
try {
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
get.setConfig(customReqConf.build());
HttpResponse res = null;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(get);
} else {
// 执行 Http 请求.
client = HttpClientUtils.client;
res = client.execute(get);
}
result = IOUtils.toString(res.getEntity().getContent(), charset);
} finally {
get.releaseConnection();
if (url.startsWith("https") && client != null && client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
return result;
}
/**
* 从 response 里获取 charset
*
* @param ressponse
* @return
*/
@SuppressWarnings("unused")
private static String getCharsetFromResponse(HttpResponse ressponse) {
// Content-Type:text/html; charset=GBK
if (ressponse.getEntity() != null && ressponse.getEntity().getContentType() != null && ressponse.getEntity().getContentType().getValue() != null) {
String contentType = ressponse.getEntity().getContentType().getValue();
if (contentType.contains("charset=")) {
return contentType.substring(contentType.indexOf("charset=") + 8);
}
}
return null;
}
/**
* 创建 SSL连接
* @return
* @throws GeneralSecurityException
*/
private static CloseableHttpClient createSSLInsecureClient() throws GeneralSecurityException {
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain,String authType) throws CertificateException {
return true;
}
}).build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
@Override
public void verify(String host, SSLSocket ssl)
throws IOException {
}
@Override
public void verify(String host, X509Certificate cert)
throws SSLException {
}
@Override
public void verify(String host, String[] cns,
String[] subjectAlts) throws SSLException {
}
});
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
} catch (GeneralSecurityException e) {
throw e;
}
}
public static void main(String[] args) {
try {
String str= post("https://localhost:443/ssl/test.shtml","name=12&page=34","application/x-www-form-urlencoded", "UTF-8", 10000, 10000);
//String str= get("https://localhost:443/ssl/test.shtml?name=12&page=34","GBK");
/*Map<String,String> map = new HashMap<String,String>();
map.put("name", "111");
map.put("page", "222");
String str= postForm("https://localhost:443/ssl/test.shtml",map,null, 10000, 10000);*/
System.out.println(str);
} catch (ConnectTimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SocketTimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
/**
* @author Symon
* @version 1.0
* @className WxApiController
* @date 2021/1/8 14:56
*/
@Controller
@RequestMapping("/api/ucenter/wx")
@CrossOrigin
public class WxApiController {
@Value("${wx.open.app_id}")
private String WX_OPEN_APP_ID;
@Value("${wx.open.appsecret}")
private String WX_OPEN_APP_SECRET;
@Value("${wx.open.redirect_url}")
private String WX_OPEN_REDIRECT_URL;
@Resource
private MemberCenterService memberCenterService;
// 1.生成二维码(官方文档第一步)
@GetMapping("login")
public String qrCode() throws Exception{
String baseUrl = "https://open.weixin.qq.com/connect/qrconnect" +
"?appid=%s" +
"&redirect_uri=%s" +
"&response_type=code" +
"&scope=snsapi_login" +
"&state=%s" +
"#wechat_redirect";
String state="abcd";
//对回调路径进行编码
String encodeUrl = URLEncoder.encode(WX_OPEN_REDIRECT_URL, "utf-8");
//拼接字符串
String qrCodeUrl = String.format(baseUrl, WX_OPEN_APP_ID, encodeUrl, state);
return "redirect:"+qrCodeUrl;
}
@GetMapping("callback")
public String callback(String code,String state) throws Exception{
//a.通过code+appid+appsecret得到用户的access_token和openid(官方文档第二步)
String baseAccessTokenUrl = "https://api.weixin.qq.com/sns/oauth2/access_token" +
"?appid=%s" +
"&secret=%s" +
"&code=%s" +
"&grant_type=authorization_code";
//拼接字符串
baseAccessTokenUrl = String.format(baseAccessTokenUrl, WX_OPEN_APP_ID, WX_OPEN_APP_SECRET, code);
String retVal = HttpClientUtils.get(baseAccessTokenUrl);
//把json字符串转换为Java对象
Gson gson = new Gson();
HashMap infoMap = gson.fromJson(retVal, HashMap.class);
String accessToken =(String) infoMap.get("access_token");
String openId =(String) infoMap.get("openid");
//b.根据access_token和openid获取用户信息(官方文档第三步)
String userInfoUrl = "https://api.weixin.qq.com/sns/userinfo" +
"?access_token=%s" +
"&openid=%s";
//拼接字符串
userInfoUrl = String.format(userInfoUrl, accessToken, openId);
String userInfoJson = HttpClientUtils.get(userInfoUrl);
HashMap userInfoMap = gson.fromJson(userInfoJson, HashMap.class);
String nickName =(String) userInfoMap.get("nickname");
String headImgUrl =(String) userInfoMap.get("headimgurl");
// ......
//c.拿到用户的个人信息 需要存储起来 存之前先判断该用户是否已经在数据库中有了
MemberCenter existMember=memberCenterService.queryUserByOpenId(openId);
if(existMember==null){
existMember = new MemberCenter();
existMember.setOpenid(openId);
existMember.setNickname(nickName);
existMember.setAvatar(headImgUrl);
memberCenterService.save(existMember);
}
//d.返回一个token给前端
String token = JwtUtils.geneJsonWebToken(existMember);
return "redirect:http://127.0.0.1:3000?token="+token;
}
}
参数说明：
// 1.生成二维码(官方文档第一步)
// a.通过code+appid+appsecret得到用户的access_token和openid(官方文档第二步)
// b.根据access_token和openid获取用户信息(官方文档第三步)
获取用户个人信息（UnionID机制）
请求说明
http请求方式: GET
https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID
参数说明
| 参数 | 是否必须 | 说明 |
|---|---|---|
| access_token | 是 | 调用凭证 |
| openid | 是 | 普通用户的标识，对当前开发者帐号唯一 |
| lang | 否 | 国家地区语言版本，zh_CN 简体，zh_TW 繁体，en 英语，默认为zh-CN |
返回说明
正确的Json返回结果：
{
"openid":"OPENID",
"nickname":"NICKNAME",
"sex":1,
"province":"PROVINCE",
"city":"CITY",
"country":"COUNTRY",
"headimgurl": "https://thirdwx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/0",
"privilege":[
"PRIVILEGE1",
"PRIVILEGE2"
],
"unionid": " o6_bmasdasdsad6_2sgVt7hMZOPfL"
}
| 参数 | 说明 |
|---|---|
| openid | 普通用户的标识，对当前开发者帐号唯一 |
| nickname | 普通用户昵称 |
| sex | 普通用户性别，1为男性，2为女性 |
| province | 普通用户个人资料填写的省份 |
| city | 普通用户个人资料填写的城市 |
| country | 国家，如中国为CN |
| headimgurl | 用户头像，最后一个数值代表正方形头像大小（有0、46、64、96、132数值可选，0代表640*640正方形头像），用户没有头像时该项为空 |
| privilege | 用户特权信息，json数组，如微信沃卡用户为（chinaunicom） |
| unionid | 用户统一标识。针对一个微信开放平台帐号下的应用，同一用户的unionid是唯一的。 |