开发网页微信登入获取微信用户信息
1、先进入微信公众号测试平台（填写这些的时候需要买域名，我买的是阿里云域名）：
微信公众平台
用自己微信登入可以获取自己的appid和appsecret
2、在idea后台写代码，此处的token就是测试平台自己设置的token：
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
@RestController
@RequestMapping("/wx")
public class WxTestController {
private Logger log = LoggerFactory.getLogger(WxTestController.class);
private String TOKEN = "*****";
@RequestMapping("/login")
public String login(@RequestParam("signature") String signature,
@RequestParam("timestamp") String timestamp,
@RequestParam("nonce") String nonce,
@RequestParam("echostr") String echostr) {
log.info("timestamp:"+timestamp);
log.info("nonce:"+nonce);
//排序
String sortString = sort(TOKEN, timestamp, nonce);
//加密
String myString = sha1(sortString);
//校验
if (myString != null && myString != "" && myString.equals(signature)) {
System.out.println("签名校验通过");
//如果检验成功原样返回echostr，微信服务器接收到此输出，才会确认检验完成。
return echostr;
} else {
System.out.println("签名校验失败");
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();
}
public String sha1(String str) {
try {
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.update(str.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 "";
}
}
3、二级域名在那个js框中，-----不带http：//！！！！
4、代码上传服务器启动项目，然后点击提交，提示连接成功便完成。
接下来就是需要登入获取用户信息了
一共就四步，附上 微信开发文档连接：网页授权 | 微信开放文档
1 第一步：用户同意授权，获取code
2 第二步：通过code换取网页授权access_token
3 第三步：刷新access_token（如果需要）
4 第四步：拉取用户信息(需scope为 snsapi_userinfo)
5 附：检验授权凭证（access_token）是否有效
代码如下：
mport com.naruto.huo.util.AuthUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
@Controller
public class WxLoginController{
private Logger log = LoggerFactory.getLogger(WxLoginController.class);
/**
*
*/
private static final long serialVersionUID = 1L;
@RequestMapping("/wxLogin")
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
log.info("进入WxLoginController");
//第一步：引导用户进入授权页面同意授权，获取code
//回调地址
String backUrl = "*****"; //第1种情况使用
// String backUrl = "*****k";//第2种情况使用，这里是web.xml中的路径
//授权页面地址
String url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + AuthUtil.APPID
+ "&redirect_uri=" + URLEncoder.encode(backUrl)
+ "&response_type=code"
+ "&scope=snsapi_userinfo"
+ "&state=STATE#wechat_redirect";
//重定向到授权页面
response.sendRedirect(url);
}
}
import com.naruto.huo.model.UserVx;
import com.naruto.huo.util.AuthUtil;
import net.sf.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.*;
import java.util.Date;
@Controller
public class WxIndexController {
/**
*
*/
private Logger log = LoggerFactory.getLogger(WxIndexController.class);
private static final long serialVersionUID = 1L;
//1. 获取JDBCTemplate对象
@Autowired
private JdbcTemplate jdbcTemplate;
private String dbUrl;
private String driverClassName;
private String userName;
private String passWord;
private Connection conn = null;
private PreparedStatement ps = null;
private ResultSet rs = null;
//初始化数据库
public void init(ServletConfig config) throws ServletException {
//加载驱动
try {
this.dbUrl = config.getInitParameter("dbUrl");
this.driverClassName = config.getInitParameter("driverClassName");
this.userName = config.getInitParameter("userName");
this.passWord = config.getInitParameter("passWord");
Class.forName(driverClassName);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@RequestMapping("/callBack")
protected ModelAndView callBack(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
log.info("进入获取code后台");
//第二步：通过code换取网页授权access_token
//从request里面获取code参数(当微信服务器访问回调地址的时候，会把code参数传递过来)
String code = request.getParameter("code");
System.out.println("code:" + code);
//获取code后，请求以下链接获取access_token
String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + AuthUtil.APPID
+ "&secret=" + AuthUtil.APPSECRET
+ "&code=" + code
+ "&grant_type=authorization_code";
//通过网络请求方法来请求上面这个接口
JSONObject jsonObject = AuthUtil.doGetJson(url);
System.out.println("==========================jsonObject" + jsonObject);
//从返回的JSON数据中取出access_token和openid，拉取用户信息时用
String token = jsonObject.getString("access_token");
System.out.println("第一次的token:"+token);
String openid = jsonObject.getString("openid");
String refresh_token = jsonObject.getString("refresh_token");
// 第三步：刷新access_token（如果需要）
JSONObject jsonObjectRefresh = AuthUtil.getRefreshToken(refresh_token);
// 第四步：拉取用户信息(需scope为 snsapi_userinfo)
System.out.println("==========================jsonObjectRefresh" + jsonObjectRefresh);
String tokenR = jsonObject.getString("access_token");
String openidR = jsonObject.getString("openid");
String infoUrl = "https://api.weixin.qq.com/sns/userinfo?access_token=" + tokenR
+ "&openid=" + openidR
+ "&lang=zh_CN";
//通过网络请求方法来请求上面这个接口
JSONObject userInfo = AuthUtil.doGetJson(infoUrl);
//存储此用户
UserVx userVx = new UserVx();
userVx.setOpenId((String)userInfo.get("openid"));
userVx.setPassword("123456");
userVx.setUpdateTime(new Date());
userVx.setCreateTime(new Date());
log.info("获取到openid:"+(String)userInfo.get("openid"));
Integer count = jdbcTemplate.queryForObject("select count(1) from user_wx where openid = ?",Integer.class,new Object[]{(String)userInfo.get("openid")});
log.info("此用户存在几个："+count);
if(count == 0){
String sql = "insert into user_wx (openid,password,create_time,update_time) values (?,?,?,?)";
jdbcTemplate.update(sql,(String)userInfo.get("openid"),"123456",new Date(),new Date());
log.info("插入一条数据成功");
}else{
String sql = "update user_wx update_time = ? where openid = ?";
jdbcTemplate.update(sql,new Date(),(String)userInfo.get("openid"));
}
//第1种情况：使用微信用户信息直接登录，无需注册和绑定
request.setAttribute("info", userInfo);
//直接跳转
// request.getRequestDispatcher("/index1Wx.html").forward(request, response);
ModelAndView mv = new ModelAndView();
mv.setViewName("index1Wx");
return mv;
//第2种情况： 将微信与当前系统的账号进行绑定(需将第1种情况和@WebServlet("/callBack")注释掉)
//第一步，根据当前openid查询数据库，看是否该账号已经进行绑定
/* try {
String nickname = getNickName(openid);
if (!"".equals(nickname)) {
//已绑定
request.setAttribute("nickname", nickname);
request.getRequestDispatcher("/indexWx2.html").forward(request, response);
} else {
//未绑定
request.setAttribute("openid", openid);
request.getRequestDispatcher("/loginWx.html").forward(request, response);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
}
//数据库的查询
public String getNickName(String openid) throws SQLException {
String nickName = "";
//创建数据库链接
conn = DriverManager.getConnection(dbUrl, userName, passWord);
String sql = "select nickname from user where openid = ?";
ps = conn.prepareStatement(sql);
ps.setString(1, openid);
rs = ps.executeQuery();
while (rs.next()) {
nickName = rs.getString("nickname");
}
//关闭链接
rs.close();
ps.close();
conn.close();
return nickName;
}
//数据库的修改(openid的綁定)
public int updateUser(String account, String password, String openid) throws SQLException {
//创建数据库链接
conn = DriverManager.getConnection(dbUrl, userName, passWord);
String sql = "update user set openid = ? where account = ? and password = ?";
ps = conn.prepareStatement(sql);
ps.setString(1, openid);
ps.setString(2, account);
ps.setString(3, password);
int temp = ps.executeUpdate();
//关闭链接
rs.close();
ps.close();
conn.close();
return temp;
}
/*
//post方法，用来接受登录请求
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String account = request.getParameter("account");
String password = request.getParameter("password");
String openid = request.getParameter("openid");
try {
int temp = updateUser(account, password, openid);
if (temp > 0) {
String nickname = getNickName(openid);
request.setAttribute("nickname", nickname);
request.getRequestDispatcher("/indexWx2.html").forward(request, response);
System.out.println("账号绑定成功");
} else {
System.out.println("账号绑定失败");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}*/
}
成功后：扫码即可获取信息
THE END
