1.通过 wx.login获取 登录凭证(code)
wx.login({ success: function (res) { console.log(res.code); } })
wx.login({ success: function (res) { console.log(res.code); } })2.在此处获得appid 和 secret :https://developers.weixin.qq.com/sandboxhttps://developers.weixin.qq.com/sandbox如图3.小程序端http://127.0.0.1:8080/jeecg-boot 这一段是自己的访问路径http://127.0.0.1:8080/jeecg-boot
//app.js
App({
globalData: {
appid: '',
appsecret: '',//
openid: ''
}
onLaunch: function () {
var that =this;
// 登录
wx.login({

success: function (res) {

console.log(res.code)

wx.request({

url: 'http://127.0.0.1:8080/jeecg-boot/hwork/hworkLog/GetOpenIdServlet',

data: {

appid: that.globalData.appid,

secret: that.globalData.appsecret,

js_code: res.code,

grant_type: 'authorization_code'

},

method: 'POST',

header: {

'Content-Type': 'application/x-www-form-urlencoded'

},

success: function (res) {

console.log(res)

//转json

var j= JSON.parse(res.data.result)

//获取到openid

that.globalData.openid = j.openid;

}

})

}
})

}
})
//app.js
App({
globalData: {
appid: '',
appsecret: '',//
openid: ''
}
onLaunch: function () {
var that =this;
// 登录
wx.login({

success: function (res) {

console.log(res.code)

wx.request({

url: 'http://127.0.0.1:8080/jeecg-boot/hwork/hworkLog/GetOpenIdServlet',

data: {

appid: that.globalData.appid,

secret: that.globalData.appsecret,

js_code: res.code,

grant_type: 'authorization_code'

},

method: 'POST',

header: {

'Content-Type': 'application/x-www-form-urlencoded'

},

success: function (res) {

console.log(res)

//转json

var j= JSON.parse(res.data.result)

//获取到openid

that.globalData.openid = j.openid;

}

})

}
})

}
})4.后台代码工具类
package org.jeecg.modules.hworkorder.util;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
public class WeChatService {
/**

* 调用对方接口方法

* @param path 对方或第三方提供的路径

* @param data 向对方或第三方发送的数据,大多数情况下给对方发送JSON数据让对方解析

*/
public static String interfaceUtil(String path,String data) {

String openId="";

try {

URL url = new URL(path);

//打开和url之间的连接

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

PrintWriter out = null;

//请求方式
//
conn.setRequestMethod("POST");
//
//设置通用的请求属性

conn.setRequestProperty("accept", "*/*");

conn.setRequestProperty("connection", "Keep-Alive");

conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");

//设置是否向httpUrlConnection输出,设置是否从httpUrlConnection读入,此外发送post请求必须设置这两个

//最常用的Http请求无非是get和post,get请求可以获取静态页面,也可以把参数放在URL字串后面,传递给servlet,

//post与get的 不同之处在于post的参数不是放在URL字串里面,而是放在http请求的正文内。

conn.setDoOutput(true);

conn.setDoInput(true);

//获取URLConnection对象对应的输出流

out = new PrintWriter(conn.getOutputStream());

//发送请求参数即数据

out.print(data);

//缓冲数据

out.flush();

//获取URLConnection对象对应的输入流

InputStream is = conn.getInputStream();

//构造一个字符流缓存

BufferedReader br = new BufferedReader(new InputStreamReader(is));

String str = "";

while ((str = br.readLine()) != null) {

openId=str;

System.out.println(str);

}

//关闭流

is.close();

//断开连接,最好写上,disconnect是在底层tcp socket链接空闲时才切断。如果正在被其他线程使用就不切断。

//固定多线程的话,如果不disconnect,链接会增多,直到收发不出信息。写上disconnect后正常一些。

conn.disconnect();

System.out.println("完整结束");

} catch (Exception e) {

e.printStackTrace();

}

return openId;
}
public static String GetOpenID(String appid,String appsecret,String Code) {

//临时登录凭证

String URL = "https://api.weixin.qq.com/sns/jscode2session?appid="+appid+"&secret="+appsecret+"&js_code="+Code+"&grant_type=authorization_code";

String openId=interfaceUtil(URL, "");

return openId;
}
}
package org.jeecg.modules.hworkorder.util;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
public class WeChatService {
/**

* 调用对方接口方法

* @param path 对方或第三方提供的路径

* @param data 向对方或第三方发送的数据,大多数情况下给对方发送JSON数据让对方解析

*/
public static String interfaceUtil(String path,String data) {

String openId="";

try {

URL url = new URL(path);

//打开和url之间的连接

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

PrintWriter out = null;

//请求方式
//
conn.setRequestMethod("POST");
//
//设置通用的请求属性

conn.setRequestProperty("accept", "*/*");

conn.setRequestProperty("connection", "Keep-Alive");

conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");

//设置是否向httpUrlConnection输出,设置是否从httpUrlConnection读入,此外发送post请求必须设置这两个

//最常用的Http请求无非是get和post,get请求可以获取静态页面,也可以把参数放在URL字串后面,传递给servlet,

//post与get的 不同之处在于post的参数不是放在URL字串里面,而是放在http请求的正文内。

conn.setDoOutput(true);

conn.setDoInput(true);

//获取URLConnection对象对应的输出流

out = new PrintWriter(conn.getOutputStream());

//发送请求参数即数据

out.print(data);

//缓冲数据

out.flush();

//获取URLConnection对象对应的输入流

InputStream is = conn.getInputStream();

//构造一个字符流缓存

BufferedReader br = new BufferedReader(new InputStreamReader(is));

String str = "";

while ((str = br.readLine()) != null) {

openId=str;

System.out.println(str);

}

//关闭流

is.close();

//断开连接,最好写上,disconnect是在底层tcp socket链接空闲时才切断。如果正在被其他线程使用就不切断。

//固定多线程的话,如果不disconnect,链接会增多,直到收发不出信息。写上disconnect后正常一些。

conn.disconnect();

System.out.println("完整结束");

} catch (Exception e) {

e.printStackTrace();

}

return openId;
}
public static String GetOpenID(String appid,String appsecret,String Code) {

//临时登录凭证

String URL = "https://api.weixin.qq.com/sns/jscode2session?appid="+appid+"&secret="+appsecret+"&js_code="+Code+"&grant_type=authorization_code";

String openId=interfaceUtil(URL, "");

return openId;
}
}
@RestController
@RequestMapping("/hwork/hworkLog")
@Slf4j
public class hworkLogContrller {
@RequestMapping(value = "/GetOpenIdServlet", method = RequestMethod.POST)
public Result GetOpenIdServlet(HttpServletRequest request, HttpServletResponse response){

Result result=new Result();

response.setContentType("text/html;charset=utf-8");

/* 设置响应头允许ajax跨域访问 */

response.setHeader("Access-Control-Allow-Origin", "*");

/* 星号表示所有的异域请求都可以接受, */

response.setHeader("Access-Control-Allow-Methods", "GET,POST");

//转成json数据

String appid=request.getParameter("appid");

String secret=request.getParameter("secret");

String js_code=request.getParameter("js_code");

if(appid!=null&&appid!=""&&secret!=null&&secret!=""&&js_code!=null&&js_code!=""){

WeChatService getOpenId=new WeChatService();

String openId=getOpenId.GetOpenID(appid,secret,js_code);

result.setResult(openId);

result.setMessage("后台收到并返回");

}else{

result.setMessage("参数为空");

result.setSuccess(false);

}

return result;
}
}
@RestController
@RequestMapping("/hwork/hworkLog")
@Slf4j
public class hworkLogContrller {
@RequestMapping(value = "/GetOpenIdServlet", method = RequestMethod.POST)
public Result GetOpenIdServlet(HttpServletRequest request, HttpServletResponse response){

Result result=new Result();

response.setContentType("text/html;charset=utf-8");

/* 设置响应头允许ajax跨域访问 */

response.setHeader("Access-Control-Allow-Origin", "*");

/* 星号表示所有的异域请求都可以接受, */

response.setHeader("Access-Control-Allow-Methods", "GET,POST");

//转成json数据

String appid=request.getParameter("appid");

String secret=request.getParameter("secret");

String js_code=request.getParameter("js_code");

if(appid!=null&&appid!=""&&secret!=null&&secret!=""&&js_code!=null&&js_code!=""){

WeChatService getOpenId=new WeChatService();

String openId=getOpenId.GetOpenID(appid,secret,js_code);

result.setResult(openId);

result.setMessage("后台收到并返回");

}else{

result.setMessage("参数为空");

result.setSuccess(false);

}

return result;
}
}到这里 就能得到openid了总结总结总结以上所述是小编给大家介绍的微信小程序静默登入的实现代码,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!
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