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微信公眾號開發中使用Java如何實現獲取用戶的信息？針對這個問題，這篇文章詳細介紹了相對應的分析和解答，希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
1、首先需要到微信網站去設置一下，我是直接用的微信測試號。
接口配置信息必須要填寫的，所以說必須能將自己的服務發布出去
到此微信配置完畢，接下來就是直接上代碼了
2、獲取用戶信息的方式一共是兩種，前提都是用戶關注微信公眾號，一種是靜默獲取(snsapi_base,這種方式只能獲取openid)，另一種是授權獲取(snsapi_userinfo,可以獲取用戶的詳細信息)。
先說第一種
(1)首先需要先訪問微信的鏈接
https://open.weixin.qq.com/connect/oauth3/authorize?appid=xxxxxxxxxxxxxxxx&redirect_uri=http://xxxxxx/open/openid&response_type=code&scope=snsapi_base
這里的 uri就是直接回掉我們的服務地址，一定要記住，服務校驗的判斷，我是按照來判斷的echostr(第二種方式也是這樣)
package net.itraf.controller;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.alibaba.fastjson.JSONObject;
@Controller
@RequestMapping("/open")
public class OpenController {
@RequestMapping("/toOpenId")
public @ResponseBody String getOpenId(String code,String echostr,HttpServletResponse res) throws IOException{
if(echostr==null){
String url="https://api.weixin.qq.com/sns/oauth3/access_token?appid=wx24d47d2080f54c5b&secret=95011ac70909e8cca2786217dd80ee3f&code="+code+"&grant_type=authorization_code";
System.out.println(code);
String openId="";
try {
URL getUrl=new URL(url);
HttpURLConnection http=(HttpURLConnection)getUrl.openConnection();
http.setRequestMethod("GET");
http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
http.setDoOutput(true);
http.setDoInput(true);
http.connect();
InputStream is = http.getInputStream();
int size = is.available();
byte[] b = new byte[size];
is.read(b);
String message = new String(b, "UTF-8");
JSONObject json = JSONObject.parseObject(message);
openId = json.getString("openid");
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return openId;
}else{
PrintWriter out = res.getWriter();
out.print(echostr);
return null;
}
}
//做服務器校驗
@RequestMapping("/tovalid")
public void valid(String echostr,HttpServletResponse res) throws IOException{
PrintWriter out = res.getWriter();
out.print(echostr);
}
}第二種
(1)
https://open.weixin.qq.com/connect/oauth3/authorize?appid=xxxxxxxx&redirect_uri=http:// 域名
/open/openid&response_type=code&scope=snsapi_userinfo&state=1&connect_redirect=1#wechat_redirect
package net.itraf.controller;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/weixin")
public class Oauth3Action {
@RequestMapping("/oauth")
public void auth(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String echostr = request.getParameter("echostr");
if(echostr==null){
String appId = "wx24d47d2080f54c5b";
String appSecret = "95011ac70909e8cca2786217dd80ee3f";
//拼接
String get_access_token_url = "https://api.weixin.qq.com/sns/oauth3/access_token?"
+ "appid="
+ appId
+ "&secret="
+ appSecret
+ "&code=CODE&grant_type=authorization_code";
String get_userinfo = "https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN";
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String code = request.getParameter("code");
System.out.println("******************code=" + code);
get_access_token_url = get_access_token_url.replace("CODE", code);
String json = HttpsGetUtil.doHttpsGetJson(get_access_token_url);
JSONObject jsonObject = JSONObject.fromObject(json);
String access_token = jsonObject.getString("access_token");
String openid = jsonObject.getString("openid");
get_userinfo = get_userinfo.replace("ACCESS_TOKEN", access_token);
get_userinfo = get_userinfo.replace("OPENID", openid);
String userInfoJson = HttpsGetUtil.doHttpsGetJson(get_userinfo);
JSONObject userInfoJO = JSONObject.fromObject(userInfoJson);
String user_openid = userInfoJO.getString("openid");
String user_nickname = userInfoJO.getString("nickname");
String user_sex = userInfoJO.getString("sex");
String user_province = userInfoJO.getString("province");
String user_city = userInfoJO.getString("city");
String user_country = userInfoJO.getString("country");
String user_headimgurl = userInfoJO.getString("headimgurl");
response.setContentType("text/html; charset=utf-8");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method \n");
out.println("openid:" + user_openid + "\n\n");
out.println("nickname:" + user_nickname + "\n\n");
out.println("sex:" + user_sex + "\n\n");
out.println("province:" + user_province + "\n\n");
out.println("city:" + user_city + "\n\n");
out.println("country:" + user_country + "\n\n");
out.println("<img src=/" + user_headimgurl + "/");
out.println(">");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}else{
PrintWriter out = response.getWriter();
out.print(echostr);
}
}
}package net.itraf.controller;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
public class HttpsGetUtil {
public static String doHttpsGetJson(String Url)
{
String message = "";
try
{
System.out.println("doHttpsGetJson");//TODO:dd
URL urlGet = new URL(Url);
HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
http.setRequestMethod("GET"); //必須是get方式請求 24
http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
http.setDoOutput(true);
http.setDoInput(true);
System.setProperty("sun.net.client.defaultConnectTimeout", "30000");//連接超時30秒28
System.setProperty("sun.net.client.defaultReadTimeout", "30000"); //讀取超時30秒29 30
http.connect();
InputStream is =http.getInputStream();
int size =is.available();
byte[] jsonBytes =new byte[size];
is.read(jsonBytes);
message=new String(jsonBytes,"UTF-8");
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
return message;
}
}關于微信公眾號開發中使用Java如何實現獲取用戶的信息問題的解答就分享到這里了，希望以上內容可以對大家有一定的幫助，如果你還有很多疑惑沒有解開，可以關注億速云行業資訊頻道了解更多相關知識。
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