关于微信

1、获取微信js所必须的签名

logger.info("获取凭证..");
            String code=(String) SecurityUtils.getSubject().getSession().getAttribute("Sign_code");
            String state=(String) SecurityUtils.getSubject().getSession().getAttribute("Sign_state");
            logger.info(state);
            logger.info(code);
            String ticket = null;
            // 存储凭证和生成时间
            FishingSingle instance = FishingSingle.instance;
            if (null != instance.getJsGenerateTime()) {
                Date currentTime = new Date();
                // 计算时间差
                long time = ((currentTime.getTime() - instance.getJsGenerateTime()
                        .getTime()) / 1000);
                // ticket有效时间7200秒
                if (time >= 7100) {
                    // 获取js凭证
                    ticket = WeixinUtil.jsApi();
                } else {
                    ticket = instance.getJsTicket();
                }
            } else {
                // 获取js凭证
                ticket = WeixinUtil.jsApi();
            }
            //ticket = WeixinUtil.jsApi();
            Map<String, Object> paramsMap = new HashMap<String, Object>();
            paramsMap.put("jsapi_ticket", ticket);
            paramsMap.put("timestamp", System.currentTimeMillis());
            paramsMap.put("noncestr", "weixin");
            // 调用js的页面完成路径
            String url=(String) MiceConfig.getContextProperty("wd_URL");
            if(code==null){
                paramsMap.put("url", url+"personal/toSign");
            }else{
                paramsMap.put("url", url+"personal/toSign?code="+code+"&state="+state);
            }
            
            // 排序后的结果
            String listStr = createLinkString(paramsMap);
            logger.info("排序后..." + listStr);
            // SHA-1加密
            String tmpStr = new MySecurity().encode(listStr, MySecurity.SHA_1);
            logger.info("SHA-1加密后：" + tmpStr);
            // 保存js需要的4个参数
            mv.addObject("appId", WeixinUtil.appId);
            logger.info(WeixinUtil.appId);
            mv.addObject("timestamp", paramsMap.get("timestamp"));
            mv.addObject("nonceStr", paramsMap.get("noncestr"));
            mv.addObject("signature", tmpStr);

所需要的加密方法

/**
     * 把数组所有元素排序，并按照“参数=参数值”的模式用“&”字符拼接成字符串
     * 
     * @param params
     *            需要排序并参与字符拼接的参数组
     * @return 拼接后字符串
     */
    public static String createLinkString(Map<String, Object> params) {

        List<String> keys = new ArrayList<String>(params.keySet());
        Collections.sort(keys);

        String prestr = "";

        for (int i = 0; i < keys.size(); i++) {
            String key = keys.get(i);
            Object value = params.get(key);

            if (i == keys.size() - 1) {// 拼接时，不包括最后一个&字符
                prestr = prestr + key + "=" + value;
            } else {
                prestr = prestr + key + "=" + value + "&";
            }
        }

        return prestr;
    }

    

2、页面必须要导入微信所提供的js

<script type="text/javascript" src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>

3、页面必须先通过签名

wx.config({
                debug : false,
                appId : '${appId}',
                timestamp : ${timestamp},
                nonceStr : '${nonceStr}',
                signature : '${signature}',
                jsApiList : [ 'checkJsApi', 'onMenuShareTimeline',
                        'onMenuShareAppMessage', 'onMenuShareQQ', 'onMenuShareWeibo',
                        'hideMenuItems', 'showMenuItems', 'hideAllNonBaseMenuItem',
                        'showAllNonBaseMenuItem', 'translateVoice', 'startRecord',
                        'stopRecord', 'onRecordEnd', 'playVoice', 'pauseVoice',
                        'stopVoice', 'uploadVoice', 'downloadVoice', 'chooseImage',
                        'previewImage', 'uploadImage', 'downloadImage',
                        'getNetworkType', 'openLocation', 'getLocation',
                        'hideOptionMenu', 'showOptionMenu', 'closeWindow',
                        'scanQRCode', 'chooseWXPay', 'openProductSpecificView',
                        'addCard', 'chooseCard', 'openCard' ]
            });

4、执行一些具体的微信提供的东西

wx.ready(function() {

}

 5、扫一扫（在4中执行）

wx.scanQRCode({

                needResult : 1,
                desc : 'scanQRCode desc',
                success : function(res) {
                    //alert(JSON.stringify(res));
                    //alert(res.resultStr);
                    //获取一个字符串数组取值           

                    var str=res.resultStr.split(",");
                    var str1=str[0];
                    var str2=str[1];
                    //post提交方法
                    $.post('',{}).success(function(data) {}
                }
            });