java 获取公众号签名signature，微信JS-SDK中config接口注入权限验证配置

wxjssdk类

package com.cdtskj.ext.wls.weixin.action;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//import com.cdtskj.ext.wls.weixin.action.StringUtil;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

import java.net.HttpURLConnection;
public class wxjssdk extends HttpServlet {


    /**
     * 通过code换取网页授权access_token，根据授权返回页面获取的code值获取openid
     */
    protected void doPost(HttpServletRequest request,
                          HttpServletResponse response) throws ServletException, IOException {

//        StringUtil st = new StringUtil();
        String appid =  "wxf3ae33747a5bd16c";
        String secret = "3083ab3b68567e2f0f341e9fa28db02e";

        //System.out.println("appid="+appid);
        //System.out.println("secret="+secret);
        String url=request.getParameter("wxurl");
        try {
           /* Map<String, Object> map2  = WxUtil.oppen_id(request, request.getSession());
            String oppen_id = (String) map2.get("oppen_id");
            String accessToken  = (String) map2.get("access_token");*/
            String accessToken = getAccessToken(appid,secret);
            //2、获取Ticket
            String jsapi_ticket = getTicket(accessToken);

            //3、时间戳和随机字符串
            String noncestr = UUID.randomUUID().toString().replace("-", "").substring(0, 16);//随机字符串
            String timestamp = String.valueOf(System.currentTimeMillis() / 1000);//时间戳

            System.out.println("accessToken:"+accessToken+"\njsapi_ticket:"+jsapi_ticket+"\n时间戳："+timestamp+"\n随机字符串："+noncestr);

            //4、获取url
            //String url="http://shuiqitong.com/xzw/jNotice/jNotice_templet/templet.jsp";
            /*根据JSSDK上面的规则进行计算
            String[] ArrTmp = {"jsapi_ticket","timestamp","nonce","url"};
            Arrays.sort(ArrTmp);
            StringBuffer sf = new StringBuffer();
            for(int i=0;i<ArrTmp.length;i++){
                sf.append(ArrTmp[i]);
            }
            */

            //5、将参数排序并拼接字符串
            String str = "jsapi_ticket="+jsapi_ticket+"&noncestr="+noncestr+"&timestamp="+timestamp+"&url="+url;

            //6、将字符串进行sha1加密
            String signature =SHA1(str);
            System.out.println("参数："+str+"\n签名："+signature);
            List l_data  =new ArrayList();
            l_data.add(timestamp);
            l_data.add(noncestr);
            l_data.add(signature);
            l_data.add(url);
            l_data.add(appid);
            JSONArray    l_jsonarrary = JSONArray.fromObject(l_data);
            //json转的字符串值
            String    l_jsonstring = l_jsonarrary.toString();
            response.getWriter().print(l_jsonstring);
            response.getWriter().flush();
            response.getWriter().close();

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }



    }


    //获取access_token
    public static String getAccessToken(String appid,String secret) {
        String access_token = "";
        String grant_type = "client_credential";//获取access_token填写client_credential
        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type="+grant_type+"&appid="+appid+"&secret="+secret;
        //这个url链接地址和参数皆不能变
        String requestUrl = "";
        String oppid="";
        JSONObject oppidObj =null;
        String openid ="";
        String requestUrl2="";
        String userInfoStr="";
        JSONObject wxUserInfo=null;
        try {
            //获取code后，请求以下链接获取access_token
            URL urlGet = new URL(url);
            HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
            http.setRequestMethod("GET"); // 必须是get方式请求
            http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            http.setDoOutput(true);
            http.setDoInput(true);
            System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
            System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
            http.connect();
            InputStream is = http.getInputStream();
            int size = is.available();
            byte[] jsonBytes = new byte[size];
            is.read(jsonBytes);
            String message = new String(jsonBytes, "UTF-8");
            JSONObject demoJson = JSONObject.fromObject(message);
            System.out.println("JSON字符串："+demoJson);
            access_token = demoJson.getString("access_token");
            is.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
        return access_token;
    }

    //获取ticket
    public static String getTicket(String access_token) {
        String ticket = null;
        String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+ access_token +"&type=jsapi";//这个url链接和参数不能变
        try {
            URL urlGet = new URL(url);
            HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
            http.setRequestMethod("GET"); // 必须是get方式请求
            http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            http.setDoOutput(true);
            http.setDoInput(true);
            System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
            System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
            http.connect();
            InputStream is = http.getInputStream();
            int size = is.available();
            byte[] jsonBytes = new byte[size];
            is.read(jsonBytes);
            String message = new String(jsonBytes, "UTF-8");
            JSONObject demoJson = JSONObject.fromObject(message);
            System.out.println("JSON字符串："+demoJson);
            ticket = demoJson.getString("ticket");
            is.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ticket;
    }


    public static String SHA1(String decript) {
        try {
            MessageDigest digest = java.security.MessageDigest.getInstance("SHA-1");
            digest.update(decript.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (int i = 0; i < messageDigest.length; i++) {
                String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
                if (shaHex.length() < 2) {
                    hexString.append(0);
                }
                hexString.append(shaHex);
            }
            return hexString.toString();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return "";
    }

    @Override
    public void destroy() {
        super.destroy();
    }

    @Override
    public void init() throws ServletException {
        super.init();
    }

    public boolean isChinese(String str) {
        boolean result = false;
        for (int i = 0; i < str.length(); i++) {
            int chr1 = (char) str.charAt(i);
            if (chr1 >= 19968 && chr1 <= 171941) {// 汉字范围 \u4e00-\u9fa5 (中文)
                result = true;
            }
        }
        return result;
    }


}

web.xml

<servlet>
	<servlet-name>wxjssdk</servlet-name>
	<servlet-class>com.weixin.controller.wxjssdk</servlet-class>
</servlet>
<servlet-mapping>
	<servlet-name>wxjssdk</servlet-name>
	<url-pattern>/wxjssdk</url-pattern>
</servlet-mapping>

jsp

 function ws_values(){
            //自动获取url
            var url = location.href.split('#').toString();//url不能写死

            var path = "<%=request.getContextPath() %>/wxjssdk";
            $.post(path,{wxurl:url},function(data){
                var data=JSON.parse(data);
                l_timestamp=data[0];//
                l_noncestr=data[1];
                l_signature=data[2];
                appid=data[4];
                wx.config({
                    debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
                    appId: appid, // 必填，公众号的唯一标识
                    timestamp:l_timestamp, // 必填，生成签名的时间戳，上文通过后台获取的
                    nonceStr: l_noncestr, // 必填，生成签名的随机串，上文通过后台获取的
                    signature: l_signature,// 必填，签名，上文通过后台获取的
                    jsApiList: ['onMenuShareTimeline','onMenuShareAppMessage','checkJsApi', 'openLocation', 'getLocation'] // 必填，需要使用的JS接口列表，就是下文的分享朋友圈和转发给朋友的列表
                });
            });
        }

java 获取公众号签名signature，微信JS-SDK中config接口注入权限验证配置

wxjssdk类

web.xml

jsp

猜你喜欢