java微信网页授权获取用户信息以及JSSDK自定义分享等功能<二>

接上文，项目搭建后，还需要一个配置文件，方便以后反复修改。

创建weixinProperties.properties属性文件，位置在上一节已经截图过。此处略过。

第一个是申请公众号，tx给你的公众号id，第二个是公众号密码，第三个是项目域名，这个以后经常用到，可改为你自己的域名。

接下来是控制器的编写。

以一个为例：位置随便放的，为了便于管理，Controller建议放在一个包内。

ComminController.java类

<span style="font-size:14px;">import java.io.IOException;import java.sql.SQLException;import java.util.Arrays;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONObject;import org.lvyouju.dao.UserDao;import org.lvyouju.dao.UserDaoImpl;import org.lvyouju.entity.SignPackage;import org.lvyouju.entity.User;import org.lvyouju.web.util.AouthUtil;import org.lvyouju.web.util.CommonUtil;import org.lvyouju.web.util.SignUtil;import org.lvyouju.web.util.TokenUtil;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;@Controller@RequestMapping(value="/lvyouju")public class CommonController {static{TokenUtil.appid = CommonUtil.weixinProperties.getString("wx.appid");TokenUtil.appsecret = CommonUtil.weixinProperties.getString("wx.appsecret");if ("".equals(TokenUtil.appid)|| "".equals(TokenUtil.appsecret)) {System.out.println("appid and appsecret configuration error, please check carefully.");} else {// 启动定时获取access_token的线程new Thread(new TokenUtil()).start();}}@RequestMapping(value="/lvyou")public void reposition(HttpServletRequest request,HttpServletResponse response) throws IOException{String info=request.getParameter("info");if("1".equals(info)){response.sendRedirect(AouthUtil.aouthReposition("lvyouju/home.do","1"));}else if("2".equals(info)){response.sendRedirect(AouthUtil.aouthReposition("lvyouju/home.do","2"));}}@RequestMapping("/home")public String toGeermoList(HttpServletRequest request,HttpServletResponse response,Model model) throws SQLException{SignPackage signPackage= SignUtil.sign(request);@SuppressWarnings("resource")ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml");//UserDao userDao = app.getBean("userDao", UserDao.class);               String state = request.getParameter("state");               JSONObject json = CommonUtil.getUserInfo(request);               if(json.containsKey("errcode")){                    response.sendRedirect(AouthUtil.aouthReposition("lvyouju/home.do",state));               }else{                    String openid = json.getString("openid");//获取到的用户openid                    String refresh_token = json.getString("refresh_token");                    String access_token = json.getString("access_token");                    String checkTokenUrl = "https://api.weixin.qq.com/sns/auth?access_token="+access_token+"&openid="+openid;                    JSONObject checkResult = CommonUtil.httpRequest(checkTokenUrl, "GET", null);//检测access_token是否失效                    if(!"ok".equals(checkResult.getString("errmsg"))){                        String refreshUrl = "https://api.weixin.qq.com/sns/oauth2/refresh_token?appid="                    +CommonUtil.weixinProperties.getString("wx.appid")+"&grant_type=refresh_token&refresh_token="+refresh_token;                        json = CommonUtil.httpRequest(refreshUrl, "GET", null);                        refresh_token = json.getString("refresh_token");                        access_token = json.getString("access_token");                    }                    String userInfoURL = "https://api.weixin.qq.com/sns/userinfo?access_token="+access_token+                                         "&openid="+openid+"&lang=zh_CN";                    JSONObject userInfoJson = CommonUtil.httpRequest(userInfoURL, "GET", null);//获取到的用户详细信息                    request.setAttribute("signPackage", signPackage);    return "pages/home/homeList";        }       }</span>

接下来是网页授权oAuth2.0的代码：

其实也不难，关键是对官方文档的理解：

AouthUtil.java类

<span style="font-size:14px;">public class AouthUtil {//aouth2.0重定向静默授权public static String aouthReposition(String requestUrl,String state){StringBuilder sb = new StringBuilder();sb.append("https://open.weixin.qq.com/connect/oauth2/authorize?appid=");String appid = CommonUtil.weixinProperties.getString("wx.appid");sb.append(appid);sb.append("&redirect_uri=");// 获取服务器域名String serviceUrl = CommonUtil.weixinProperties.getString("wx.url");sb.append(serviceUrl);sb.append(requestUrl);// 如要获取用户详细信息snsapi_base须改为snsapi_userinfosb.append("&response_type=code&scope=snsapi_userinfo&state=");sb.append(state);sb.append("#wechat_redirect");return sb.toString();}}</span>

CommonUtil.java类

<span style="font-size:14px;">import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.ConnectException;import java.net.URL;import java.util.ResourceBundle;import javax.net.ssl.HttpsURLConnection;import javax.net.ssl.SSLContext;import javax.net.ssl.SSLSocketFactory;import javax.net.ssl.TrustManager;import javax.servlet.http.HttpServletRequest;import net.sf.json.JSONException;import net.sf.json.JSONObject;import org.lvyouju.entity.AccessToken;import org.lvyouju.entity.JsapiTicket;public class CommonUtil {public static ResourceBundle weixinProperties = ResourceBundle.getBundle("weixinProperties");public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";public final static String jsapi_ticket_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi";public static JSONObject getUserInfo(HttpServletRequest request)throws Exception {String code = request.getParameter("code");String state = request.getParameter("state");String appid = weixinProperties.getString("wx.appid");// 读取属性配置文件String appsecret = weixinProperties.getString("wx.appsecret");// 微信官方提供的url规范String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="+ appid + "&secret=" + appsecret + "&code=" + code+ "&grant_type=authorization_code";JSONObject json = httpRequest(url, "GET", null);state=state+"2";json.put("state1", state);return json;}public static JSONObject httpRequest(String requestUrl,String requestMethod, String outputStr) throws Exception {JSONObject jsonObject = null;StringBuffer buffer = new StringBuffer();try {// 创建SSLContext对象，并使用我们指定的信任管理器初始化TrustManager[] tm = { new MyX509TrustManager() };SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");sslContext.init(null, tm, new java.security.SecureRandom());// 从上述SSLContext对象中得到SSLSocketFactory对象SSLSocketFactory ssf = sslContext.getSocketFactory();URL url = new URL(requestUrl);HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();httpUrlConn.setSSLSocketFactory(ssf);httpUrlConn.setDoOutput(true);httpUrlConn.setDoInput(true);httpUrlConn.setUseCaches(false);// 设置请求方式（GET/POST）httpUrlConn.setRequestMethod(requestMethod);if ("GET".equalsIgnoreCase(requestMethod))httpUrlConn.connect();// 当有数据需要提交时if (null != outputStr) {OutputStream outputStream = httpUrlConn.getOutputStream();// 注意编码格式，防止中文乱码outputStream.write(outputStr.getBytes("UTF-8"));outputStream.close();}// 将返回的输入流转换成字符串InputStream inputStream = httpUrlConn.getInputStream();InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");BufferedReader bufferedReader = new BufferedReader(inputStreamReader);String str = null;while ((str = bufferedReader.readLine()) != null) {buffer.append(str);}bufferedReader.close();inputStreamReader.close();// 释放资源inputStream.close();inputStream = null;httpUrlConn.disconnect();jsonObject = JSONObject.fromObject(buffer.toString());} catch (ConnectException ce) {throw ce;} catch (Exception e) {throw e;}return jsonObject;}public static AccessToken getAccessToken(String appid, String appsecret) throws Exception {AccessToken accessToken = null;String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret);JSONObject jsonObject = httpRequest(requestUrl, "GET", null);// 如果请求成功if (null != jsonObject) {try {accessToken = new AccessToken();accessToken.setToken(jsonObject.getString("access_token"));accessToken.setExpiresIn(jsonObject.getInt("expires_in"));} catch (JSONException e) {accessToken = null;}}return accessToken;}public static JsapiTicket getJsapiTicket(String tocken) throws Exception {JsapiTicket jsapiTicket = null;String requestUrl = jsapi_ticket_url.replace("ACCESS_TOKEN", tocken);JSONObject jsonObject = httpRequest(requestUrl, "GET", null);// 如果请求成功if (null != jsonObject) {try {jsapiTicket = new JsapiTicket();jsapiTicket.setTicket(jsonObject.getString("ticket"));jsapiTicket.setExpiresIn(jsonObject.getInt("expires_in"));} catch (JSONException e) {jsapiTicket = null;// 获取token失败e.printStackTrace();}}return jsapiTicket;}}</span>

到这为止，网页授权和jssdk分享的java代码部分全部写完。

接下来是网页jsp页面的书写。