Preface
The small program written in Uniapp is about to go online, but it turned out that WeChat could not be reviewed. I also find it very strange! The dismissal information is as follows.
This is true, because the code written before must be in debug mode when obtaining user openid. I thought it was a problem of not being online! This time, it’s good, but the online is not allowed, there is no story behind it.
Before
uni.login({
provider: 'weixin',
success: function(res) {
console.log(res)
let appid = ''
let secret = ''
let url = 'https://api.weixin.qq.com/sns/jscode2session?appid=' + appid + '&secret=' + secret + '&js_code=' +
res.code + '&grant_type=authorization_code';
uni.request({
url: url, // 请求路径
success: result => {
console.info("result.data==>", result.data);
let openId = result.data.openid;
console.info("openId==>", openId);
},
});
}
});
The previous writing method was not authorized by our own server, and the front-end was done directly, and the user's openid could indeed be obtained, and then the above problem occurred!
Server authorization
Server
@GetMapping("/wxOAuth")
public JSONObject list(String code) {
String requestUrl = "https://api.weixin.qq.com/sns/jscode2session";
Map<String,String> requestUrlParam = new HashMap<String,String>();
requestUrlParam.put("appid",""); //开发者设置中的appId
requestUrlParam.put("secret", ""); //开发者设置中的appSecret
requestUrlParam.put("js_code", code); //小程序调用wx.login返回的code
requestUrlParam.put("grant_type", "authorization_code");//默认参数
JSONObject jsonObject = JSON.parseObject(UrlUtil.sendPost(requestUrl, requestUrlParam));
return jsonObject;
}
//请求工具类
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.Iterator;
import java.util.Map;
public class UrlUtil {
/**
* 向指定 URL 发送POST方法的请求
*
* @param url 发送请求的 URL
* @return 所代表远程资源的响应结果
*/
public static String sendPost(String url, Map<String, ?> paramMap) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
String param = "";
Iterator<String> it = paramMap.keySet().iterator();
while(it.hasNext()) {
String key = it.next();
param += key + "=" + paramMap.get(key) + "&";
}
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
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
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
e.printStackTrace();
}
//使用finally块来关闭输出流、输入流
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result;
}
}
front end
wxGetUserInfo() {
uni.login({
provider: 'weixin',
success: loginRes => {
console.log(loginRes.code)
getWxOauth(
loginRes.code
).then(res => {
console.log(res)
let openId = res.data.openid;
console.info("openId==>", openId);
}).catch(res => {
})
}
});
},
Get it done!