微信网页授权获取用户基本信息
1、准备工作
1）申请测试账号，并接入自已的servlet
@WebServlet("/wx_token")
public class wx_token extends HttpServlet {
private static final long serialVersionUID = 1L;
public String token = "xxx";
public wx_token() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String signature = request.getParameter("signature");
String timestamp = request.getParameter("timestamp");
String nonce = request.getParameter("nonce");
String echostr = request.getParameter("echostr");
System.out.println("signature:" + signature);
System.out.println("timestamp:" + timestamp);
System.out.println("nonce:" + nonce);
System.out.println("echostr:" + echostr);
PrintWriter pw = response.getWriter();
pw.append(echostr);
pw.flush();
}
}
servlet中的token跟这个配制一制即可，如果是xxx,那大家都是xxx.
下载natapp
将本地地址转到外网地址
如果是tomcat，将域名直接访问
通过以上的访问，可以直接通过localhost访问到ckySvr站
打开natapp.exe,可以看到http://开头的域名，转到了本地80端口，
打开微信测试账号管理页，找到
这样微信中就配好了。
下面是实际的Servlet，这个Servlet主要是获取code
@WebServlet("/OpenIdServlet")
public class OpenIdServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private String openidURL = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=%s&redirect_uri=%s&response_type=code&scope=snsapi_userinfo&state=123#wechat_redirect";
private String appId = "您的appId";
private String redirectURL = "http://10ec6069.ngrok.natapp.cn/OpenIdResultServlet";
public OpenIdServlet() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String url = String.format(openidURL, appId, redirectURL);
response.sendRedirect(url);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
@WebServlet("/OpenIdResultServlet")
public class OpenIdResultServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private String appId = "您的appId";
private String appSecret = "您的appSecret";
/**
* @see HttpServlet#HttpServlet()
*/
public OpenIdResultServlet() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String code = request.getParameter("code");
String url = "https://api.weixin.qq.com/sns/oauth2/access_token";
String params = "appid=" + appId + "&secret=" + appSecret + "&code="
+ code + "&grant_type=authorization_code";
// request.setAttribute("code", url + "?" + params);
String s = HttpRequest.sendGet(url, params);
request.setAttribute("code", s);
try {
JSONObject jsonObject = new JSONObject(s);
String openid = jsonObject.getString("openid");
request.setAttribute("code", "openid:" + openid);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
request.getRequestDispatcher("result.jsp").forward(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
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.List;
import java.util.Map;
public class HttpRequest {
/**
* 向指定URL发送GET方法的请求
*
* @param url
* 发送请求的URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
for (String key : map.keySet()) {
System.out.println(key + "--->" + map.get(key));
}
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
/**
* 向指定 URL 发送POST方法的请求
*
* @param url
* 发送请求的 URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
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("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()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送 POST 请求出现异常！" + 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;
}
}
这样openid就输出在了页面上了。即加密的微信号
注意：测试账号，是要关注了才可以获取的到，认证的账号应该不要，具体的要测试。
具体请参考微信官网说明：
下面就是实际测试了，这些离开了微信客户端就没有意义了。
所以打开扫一扫，扫一下我们初始的Servlet地址对应的URL
这样你就可以在微信客户端里看到了openid,即加密的微信号
道法自然
