微信支付详情

转载自：http://www.2cto.com/kf/201409/330136.html

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准备:

1,导入微信的libs包libammsdk.jar;

2,测试时使用weixinDemo中的debug_keystore;

3,需要注意应用要通过审核,并且几个Key值正确,一下为微信支付Demo中的值:

 

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//微信公众平台id;
private String app_wx_appid=WxConstants.app_wx_appid;
//微信开放平台和商户约定的密钥
private String app_wx_secret_key="db426a9829e4b49a0dcac7b4162da6b6";
//微信公众平台商户模块和商户约定的密钥
private String app_wx_parent_key="8934e7d15453e97507ef794cf7b0519d";
//微信公众平台商户模块和商户约定的支付密钥
private String app_wx_pay_key="L8LrMqqeGRxST5reouB0K66CaYAWpqhAVsq7ggKkxHCOastWksvuX1uvmvQclxaHoYd3ElNBrNO2DHnnzgfVG9Qs473M3DTOZug5er46FhuGofumV8H2FVR9qkjSlC5K";
// 商家向财付通申请的商家id */
private String app_tx_parent_key = "1900000109";

 

 

 

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根据微信支付Demo,微信支付分为三步:

第一步,获取accessToken,accessToken值第二步要用;

 

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private class GetAccessTokenTask extends AsyncTask<void, void,="" wxgetaccesstokenresult=""> {
        @Override
        protected WxGetAccessTokenResult doInBackground(Void... params) {
            WxGetAccessTokenResult result = getAccessToken();
            return result;
        }
        @Override
        protected void onPostExecute(WxGetAccessTokenResult result) {
            if (result.localRetCode == WxLocalRetCode.ERR_OK) {
                GetPrepayIdTask getPrepayId = new GetPrepayIdTask();
                getPrepayId.execute(result);
            }
        }
     
    }</void,>

解析服务器响应

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private WxGetAccessTokenResult getAccessToken() {
        WxGetAccessTokenResult result = new WxGetAccessTokenResult();
        String url = String.format(api_get_access_token,
                "client_credential",
                app_wx_appid,
                app_wx_secret_key);
        byte[] buf = WeixinUtil.httpGet(url);
        if (buf == null || buf.length == 0) {
            result.localRetCode = WxLocalRetCode.ERR_HTTP;
            return result;
        }
        String content = new String(buf);
        result.parseFrom(content);
        return result;
    }

第二步,根据第一步的accesstoken值,将 组装的商品参数Post给微信服务器

 

 

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private class GetPrepayIdTask extends AsyncTask<wxgetaccesstokenresult, void,="" wxgetprepayidresult=""> {
        @Override
        protected WxGetPrepayIdResult doInBackground(WxGetAccessTokenResult... params) {
            WxGetPrepayIdResult result = getPrepayId(params[0]);
            return result;
        }
        @Override
        protected void onPostExecute(WxGetPrepayIdResult result) {
            if (result.localRetCode == WxLocalRetCode.ERR_OK) {
                sendPayReq(result);
            }
        }
    }</wxgetaccesstokenresult,>

组装参数

 

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private WxGetPrepayIdResult getPrepayId(WxGetAccessTokenResult accessTokenResult) {
        String url = String.format(api_get_preorder_id,accessTokenResult.accessToken);
        String entity = appSign.getWxPrepayAppSign();
         
        WxGetPrepayIdResult result = new WxGetPrepayIdResult();
         
        byte[] buf = WeixinUtil.httpPost(url, entity);
        if (buf == null || buf.length == 0) {
            result.localRetCode = WxLocalRetCode.ERR_HTTP;
            return result;
        }
         
        String content = new String(buf);
        result.parseFrom(content);
        return result;
    }

Post给服务器

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<span style="white-space:pre">  </span>private void sendPayReq(WxGetPrepayIdResult result) {
         
        PayReq req = new PayReq();
        req.appId = app_wx_appid;
        req.partnerId = app_tx_parent_key;
        req.prepayId = result.prepayId;
        req.nonceStr = appSign.getNoncestr();
        req.timeStamp = appSign.getTimestamp();
        req.packageValue = "Sign=" + appSign.getPackageSign();
         
        List<namevaluepair> signParams = new LinkedList<namevaluepair>();
        signParams.add(new BasicNameValuePair("appid", req.appId));
        signParams.add(new BasicNameValuePair("appkey", app_wx_pay_key));
        signParams.add(new BasicNameValuePair("noncestr", req.nonceStr));
        signParams.add(new BasicNameValuePair("package", req.packageValue));
        signParams.add(new BasicNameValuePair("partnerid", req.partnerId));
        signParams.add(new BasicNameValuePair("prepayid", req.prepayId));
        signParams.add(new BasicNameValuePair("timestamp", req.timeStamp));
        req.sign = WeixinUtil.genSign(signParams);
         
        wxRequest.sendReq(req);
    }</namevaluepair></namevaluepair>
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第三步:在项目下新建一个包wxapi,建立一个类名为WXPayEntryActivity作为接受微信的支付结果,不过最终结果以服务器的返回为准notify_url:

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package net.sourceforge.simcpux.wxapi;
public class WXPayEntryActivity extends Activity implements IWXAPIEventHandler{<pre name="code" class="java"><span style="white-space:pre"> </span>@Override
    public void onResp(BaseResp resp) {
        Log.d(TAG, "onPayFinish, errCode = " + resp.errCode);
 
        if (resp.getType() == ConstantsAPI.COMMAND_PAY_BY_WX) {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("支付结果");
            builder.setMessage("支付结果"+String.valueOf(resp.errCode));
            builder.show();
        }
    }</pre>}
<p></p>
<pre class="brush:java;"></pre>
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<p></p>
<p>暂时没想到其他想说的,先看个效果</p>
<p>1,包结构,需要注意的就是接收微信返回结果的那个类名;</p>
<p><img src="http://www.2cto.com/uploadfile/Collfiles/20140901/201409010901522.png" alt="\" style="width: 239px; height: 238px;"></p>
<p>2,组装数据,规则在文档中有说明<喎�"http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHByZSBjbGFzcz0="brush:java;">//package_ 字段生成方法
//package生成方法：
//A)对所有传入参数按照字段名的ASCII 码从小到大排序（字典序）后，使用URL 键值对的格式（即key1=value1&key2=value2…）拼接成字符串string1；
//B) 在string1 最后拼接上key=partnerKey 得到stringSignTemp 字符串， 并对 stringSignTemp进行md5 运算，再将得到的字符串所有字符转换为大写，得到sign值signValue。
//C)对string1 中的所有键值对中的value 进行urlencode 转码，按照a 步骤重新拼接成字符串，得到string2。对于js 前端程序，一定要使用函数encodeURIComponent 进行urlencode编码（注意！进行urlencode时要将空格转化为%20而不是+）。
//D)将sign=signValue 拼接到string1 后面得到最终的package 字符串。
 
//app_signature生成方法：
//A）参与签名的字段包括：appid、appkey、noncestr、package、timestamp以及 traceid
//B）对所有待签名参数按照字段名的ASCII 码从小到大排序（字典序）后，使用URL 键值对的格式（即key1=value1&key2=value2…）拼接成字符串string1。 注意：所有参数名均为小写字符
//C）对string1 作签名算法，字段名和字段值都采用原始值，不进行URL 转义。具体签名算法为SHA1</p>

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3,对应的支付界面

 

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posted @ 2016-03-14 11:14  浮若年华  阅读(220)  评论(0)    收藏  举报