最终效果演示
首先在pom文件中导入相关依赖
<dependencies>
<!--httpclient-->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</dependency>
<!--commons-io-->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
</dependency>
<!--gson-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
</dependencies>
在配置文件中(application.properties或application.yml),对其进行配置,我这里使用的是application.properties
# 微信开放平台
# 开放平台appid
wx.open.app_id=你的应用id
# 开放平台密匙
wx.open.app_secret=你的应用密匙
# 微信开放平台 重定向url
wx.open.redirect_url=重定向地址
创建第一个工具类(主要用于获取配置文件中的数据):ConstantWxUtils.java
package cn.luocome.educenter.utils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
/**
* @author 微风
* @version 1.0
* @date 2021/8/14 15:17
*/
@Component
public class ConstantWxUtils implements InitializingBean {
@Value("${wx.open.app_id}")
private String appId;
@Value("${wx.open.app_secret}")
private String appSecret;
@Value("${wx.open.redirect_url}")
private String redirectUrl;
public static String WX_OPEN_APP_ID;
public static String WX_OPEN_APP_SECRET;
public static String WX_OPEN_REDIRECT_URL;
@Override
public void afterPropertiesSet() throws Exception {
WX_OPEN_APP_ID = appId;
WX_OPEN_APP_SECRET = appSecret;
WX_OPEN_REDIRECT_URL = redirectUrl;
}
}
创建第二个工具类(用于网络请求):HttpClientUtils.java
package cn.luocome.educenter.utils;
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
*
*/
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();
}
}
}
创建第三个工具类(JWT,将json数据转化为Token令牌):JwtUtils.java
package cn.luocome.commonutils;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jws;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.util.StringUtils;
import javax.servlet.http.HttpServletRequest;
import java.util.Date;
/**
* @author 微风
* @version 1.0
* @date 2021/7/20 15:11
*/
public class JwtUtils {
public static final long EXPIRE = 1000 * 60 * 60 * 24; // 设置Token过期时间
public static final String APP_SECRET = "ukc8BDbRigUDaY6pZFfWus2jZWLPHO";// 密钥,根据这个密钥进行后期的加密(自己谁便写一个)
/**
* 生成Token字符串的方法
* @param id 用户id
* @param nickname 用户昵称
* @return
*/
public static String getJwtToken(String id, String nickname){
String JwtToken = Jwts.builder()
// 设置JWT头信息
.setHeaderParam("typ", "JWT")
.setHeaderParam("alg", "HS256")
// 设置Token的过期时间
.setSubject("luocome-user")
.setIssuedAt(new Date())
.setExpiration(new Date(System.currentTimeMillis() + EXPIRE))
// 设置Token主体部分
.claim("id", id)
.claim("nickname", nickname)
// 签名哈希
.signWith(SignatureAlgorithm.HS256, APP_SECRET)
.compact();
// 返回Token字符串
return JwtToken;
}
/**
* 判断token是否存在与有效
* @param jwtToken
* @return
*/
public static boolean checkToken(String jwtToken) {
if(StringUtils.isEmpty(jwtToken)) return false;
try {
Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 判断token是否存在与有效
* @param request
* @return
*/
public static boolean checkToken(HttpServletRequest request) {
try {
String jwtToken = request.getHeader("token");
if(StringUtils.isEmpty(jwtToken)) return false;
Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 根据token获取会员id
* @param request
* @return
*/
public static String getMemberIdByJwtToken(HttpServletRequest request) {
String jwtToken = request.getHeader("token");
if(StringUtils.isEmpty(jwtToken)) return "";
Jws<Claims> claimsJws = Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
Claims claims = claimsJws.getBody();
return (String)claims.get("id");
}
}
控制层实现逻辑
package cn.luocome.educenter.controller;
import cn.luocome.baseservice.exceptionhandler.MyException;
import cn.luocome.commonutils.JwtUtils;
import cn.luocome.educenter.entity.UcenterMember;
import cn.luocome.educenter.service.UcenterMemberService;
import cn.luocome.educenter.utils.ConstantWxUtils;
import cn.luocome.educenter.utils.HttpClientUtils;
import com.google.gson.Gson;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
/**
* @author 罗裕锋
* @version 1.0
* @date 2021/8/14 15:21
*/
@CrossOrigin
@Controller
@RequestMapping("/api/ucenter/wx")
public class WxApiController {
@Autowired
private UcenterMemberService ucenterMemberService;
// 生成微信扫描的二维码
@GetMapping("login")
public String getWxCode(){
// 微信开放平台授权baseUrl %s相当于占位符
String baseUrl = "https://open.weixin.qq.com/connect/qrconnect" +
"?appid=%s" +
"&redirect_uri=%s" +
"&response_type=code" +
"&scope=snsapi_login" +
"&state=%s" +
"#wechat_redirect";
// 对redirect_url进行URLEncoder编码
String redirectUrl = ConstantWxUtils.WX_OPEN_REDIRECT_URL;
try {
redirectUrl = URLEncoder.encode(redirectUrl, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
// 给占位符赋值
String qrcodeUrl = String.format(
baseUrl,
ConstantWxUtils.WX_OPEN_APP_ID,
redirectUrl,
"luocome"
);
// 请求微信地址(重定向到二维码生成地址中)
return "redirect:" + qrcodeUrl;
}
// 获取扫描人信息,添加数据
@GetMapping("callback")
public String callback(String code,String state){
// 获取code值
String tempCode = code;
// 通过code值请求微信固定地址,得到accsess_token 和 openid
String baseAccessTokenUrl = "https://api.weixin.qq.com/sns/oauth2/access_token" +
"?appid=%s" +
"&secret=%s" +
"&code=%s" +
"&grant_type=authorization_code";
// 拼接三个参数(id,密钥和code)
String accessTokenUrl = String.format(baseAccessTokenUrl,
ConstantWxUtils.WX_OPEN_APP_ID,
ConstantWxUtils.WX_OPEN_APP_SECRET,
tempCode);
// 请求拼接好的地址,得到accsess_token 和 openid
// 使用Httpclient发送请求,得到返回的结果
String accessTokenInfo = "";
try {
accessTokenInfo = HttpClientUtils.get(accessTokenUrl);
} catch (Exception e) {
e.printStackTrace();
throw new MyException(20001,"登录失败");
}
// 从accessTokenInfo字符串中获取accsess_token 和 openid
// 将accessTokenInfo字符串转换成map集合,通过map里面的key获取对应的值(使用Json转换工具)
Gson gson = new Gson();
HashMap<String,String> mapAccessToken = gson.fromJson(accessTokenInfo, HashMap.class);
String accessToken = (String)mapAccessToken.get("access_token");
String openId = (String)mapAccessToken.get("openid");
// 将扫码人信息添加到数据库中
// 判断数据库表中是否存在相同的微信信息(根据openid进行判断)
UcenterMember member = ucenterMemberService.getOpenIdMember(openId);
if (member == null) { // 表里没有该用户,进行添加数据
// 根据accessToken和openId再去请求微信固定地址
// 访问微信的资源服务器,获取用户信息
String baseUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo" +
"?access_token=%s" +
"&openid=%s";
String userInfoUrl = String.format(baseUserInfoUrl, accessToken, openId);
// 发送请求
String userInfo = "";
try {
userInfo = HttpClientUtils.get(userInfoUrl);
} catch (Exception e) {
e.printStackTrace();
throw new MyException(20001,"登录失败");
}
// 获取扫码人的信息
HashMap<String,String> userInfoMap = gson.fromJson(userInfo, HashMap.class);
// 获取昵称
String nikename = (String) userInfoMap.get("nickname");
// 获取头像
String headimgurl = (String) userInfoMap.get("headimgurl");
// 获取性别
Integer sex = (int)Double.parseDouble(String.valueOf(userInfoMap.get("sex")));
member = new UcenterMember();
member.setOpenid(openId);
member.setNickname(nikename);
member.setAvatar(headimgurl);
member.setSex(sex);
ucenterMemberService.save(member);
}
// 使用JWT根据member对象生成token字符串,
String jwtToken = JwtUtils.getJwtToken(member.getId(), member.getNickname());
// 返回首页面,通过路径传递token字符串
return "redirect:http://localhost:3000?token=" + jwtToken;
}
}
Servise层还有一个逻辑
// 判断数据库表中是否存在相同的微信信息(根据openid进行判断)
@Override
public UcenterMember getOpenIdMember(String openId) {
QueryWrapper<UcenterMember> wrapper = new QueryWrapper<>();
wrapper.eq("openid",openId);
UcenterMember member = baseMapper.selectOne(wrapper);
return member;
}