[微信开发] 微信JSAPI - 获取用户地理位置信息

时间：2024-03-07 15:09:03

 

参考博客

http://blog.csdn.net/u013142781/article/details/50503299

 

主要JS 方法

wx.getLocation

获取地理位置信息传递参数

成功后返回参数

 

根据返回经纬度打开地理位置网页

wx.openLocation 参数设置



关键代码：


后台 - 构造微信验证消息




private static String appId = PropertiesUtil.getValue("common.properties", "app.id");


　　 
    @RequestMapping(value = "/get_jsapi_ticket")
    @ResponseBody
    public Map<String, Object> getJsapiTicket(
            HttpServletRequest request, HttpServletResponse response,
            HttpSession session, String url) throws IOException {
        Map<String, Object> jsapiSignature = createJsapiSignature(url);
        jsapiSignature.put("appId", appId);
        return jsapiSignature;
    }

    public Map<String, Object> createJsapiSignature(String url) {

        Map<String, Object> map = new HashMap<String, Object>();

        //准备参数
        String base_access_token = redisService.getBaseTokenFromRedis(appId, appSecret);
        JSONObject jsApiTicket = WeixinUtil.getJsApiTicket(base_access_token);
        String ticket = jsApiTicket.get("ticket").toString();
        String timestamp = Long.toString(System.currentTimeMillis() / 1000);
        String nonceStr = createNonceStr(16);

        //sha1加密
        String requesturl = "jsapi_ticket=" + ticket + "&noncestr=" + nonceStr + "&timestamp=" + timestamp + "&url=" + url;
        log.info("requesturl=" + requesturl);

        String signature = SHA1(requesturl);
        log.info("signature=" + signature);

        map.put("timestamp", timestamp);
        map.put("nonceStr", nonceStr);
        map.put("signature", signature);

        return map;
    }

    /**
     * SHA、SHA1加密
     *
     * @param str
     * @return
     */
    public static String SHA1(String str) {
        try {
            MessageDigest digest = java.security.MessageDigest
                    .getInstance("SHA-1"); //如果是SHA加密只需要将"SHA-1"改成"SHA"即可
            digest.update(str.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexStr = 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) {
                    hexStr.append(0);
                }
                hexStr.append(shaHex);
            }
            return hexStr.toString();

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


    /**
     * 构造随机字符串
     *
     * @param length
     * @return
     */
    private static String createNonceStr(int length) {
        String baseStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        StringBuffer temp = new StringBuffer();
        Random random = new Random();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(baseStr.length());
            temp.append(baseStr.charAt(number));
        }
        return temp.toString();
    }




 


前端 - 发送请求并解析地理位置信息




<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>绑定页</title>
</head>

<body>
<a href="javascript:;" onclick="getLocation()">获取我的位置信息</a>

<script src="${ctx}/assets/jquery-1.10.2.min.js"></script>
<script src="${ctx}/assets/jweixin-1.2.0.js"></script>
<script type="text/javascript">
    $(function(){
        configWx();
    });

    function configWx() {
        var thisPageUrl = location.href.split(\'#\')[0];
        $.get(
                "${ctx}/oauth/get_jsapi_ticket",
                {url:thisPageUrl},
                function(data){
                    console.log(data);
                    if(data!=null){
                        configWeiXin(data.appId, data.timestamp, data.nonceStr,
                                data.signature);
                    }else {
                        console.log("配置weixin jsapi失败");
                    }
                }
        );
    }

    function configWeiXin(appId, timestamp, nonceStr, signature) {
        wx.config({
            debug : true,// 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,
            timestamp : timestamp,
            nonceStr : nonceStr,
            signature : signature,
            jsApiList : [ \'chooseImage\', \'uploadImage\', \'downloadImage\',
                \'previewImage\', \'openLocation\', \'getLocation\',
                \'scanQRCode\', \'checkJsApi\', \'onMenuShareTimeline\',
                \'onMenuShareAppMessage\', \'onMenuShareQQ\',
                \'onMenuShareWeibo\', \'onMenuShareQZone\' ]
        });
        console.log("wx");
        console.log(wx);
    }

    function getLocation() {
        wx.getLocation({
            type : \'gcj02\', // 默认为wgs84的gps坐标，如果要返回直接给openLocation用的火星坐标，可传入\'gcj02\'
            success : function(res) {
                //使用微信内置地图查看位置接口
                wx.openLocation({
                    latitude : res.latitude, // 纬度，浮点数，范围为90 ~ -90
                    longitude : res.longitude, // 经度，浮点数，范围为180 ~ -180。
                    name : \'我的位置\', // 位置名
                    address : \'中国海洋大学\', // 地址详情说明
                    scale : 28, // 地图缩放级别,整形值,范围从1~28。默认为最大
                    infoUrl : \'http://www.haiyangdaxue.com\' // 在查看位置界面底部显示的超链接,可点击跳转（测试好像不可用）
                });
            },
            cancel : function(res) {

            }
        });
    }
</script>
</body>
</html>




 





		

		
	

	
	









    
    

    
    

    

    

    

    

            

    

    

    

    

    




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