微信支付

来源：互联网发布：淘宝产品恶意投诉假货编辑：程序博客网时间：2024/06/06 00:23

holle大家好，我是小希，今天第一次写博客，写博客的原因是为了记录一些技术知识，方便以后遇到问题查看。

相信大家在集成微信支付的时候遇到过很多坑，为了方便大家不再走弯路，现在我把相关代码分享给大家，代码可以直接用，只要改一改相关配置文件即可。

ok，废话不多说，直接上代码。

public class WXPayEntryActivity extends Activity implements IWXAPIEventHandler {

private IWXAPI api;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.layout);

api = WXAPIFactory.createWXAPI(this, Constants.WX_APP_ID);

api.handleIntent(getIntent(), this);

}

@Override

protected void onNewIntent(Intent intent) {

super.onNewIntent(intent);

setIntent(intent);

api.handleIntent(intent, this);

}

@Override

public void onReq(BaseReq req) {

}

@Override

public void onResp(BaseResp resp) {

System.out.println("支付结果===" + resp.errCode + "----sss--" + resp.errStr);

// String id = SharedPreferencesUtil.readDingDan(getApplicationContext());

if (resp.errCode == 0) {

//成功

} else {

}

}

//支付activity需要的

// ------------------------------微信-----------------------------

private String APP_MCHID = "1272267501"; // 商户id

private String APP_KEY = "byt34888byt34888byt34888byt34888";

private IWXAPI msgApi;

private PayReq req;

StringBuffer sb;

Map<String, String> resultunifiedorder;

// ------------------------------微信-----------------------------

private class GetPrepayIdTask extends

AsyncTask<Void, Void, Map<String, String>> {

// private ProgressDialog dialog;

@Override

protected void onPreExecute() {

System.out.println("正在生成与支付订单");

dialog.show();

}

@Override

protected void onPostExecute(Map<String, String> result) {

// if (dialog != null) {

// dialog.dismiss();

// }

sb.append("prepay_id\n" + result.get("prepay_id") + "\n\n");

System.out.println("prepay_id:---------------------"

+ sb.toString());

resultunifiedorder = result;

genPayReq();

}

@Override

protected void onCancelled() {

super.onCancelled();

}

@Override

protected Map<String, String> doInBackground(Void... params) {

String url = String

.format("https://api.mch.weixin.qq.com/pay/unifiedorder");

String entity = genProductArgs();

Log.e("orion", entity);

byte[] buf = Util.httpPost(url, entity);

String content = new String(buf);

Log.e("orion", content);

Map<String, String> xml = decodeXml(content);

return xml;

}

// *******************************************************

public Map<String, String> decodeXml(String content) {

try {

Map<String, String> xml = new HashMap<String, String>();

XmlPullParser parser = Xml.newPullParser();

parser.setInput(new StringReader(content));

int event = parser.getEventType();

while (event != XmlPullParser.END_DOCUMENT) {

String nodeName = parser.getName();

switch (event) {

case XmlPullParser.START_DOCUMENT:

break;

case XmlPullParser.START_TAG:

if ("xml".equals(nodeName) == false) {

// 实例化student对象

xml.put(nodeName, parser.nextText());

}

break;

case XmlPullParser.END_TAG:

break;

}

event = parser.next();

}

return xml;

} catch (Exception e) {

Log.e("orion", e.toString());

}

return null;

}

/**

* 生成签名

// *******************************************************

private String genPackageSign(List<NameValuePair> params) {

StringBuilder sb = new StringBuilder();

for (int i = 0; i < params.size(); i++) {

sb.append(params.get(i).getName());

sb.append('=');

sb.append(params.get(i).getValue());

sb.append('&');

}

sb.append("key=");

sb.append(APP_KEY);

String packageSign = MD5.getMessageDigest(sb.toString().getBytes())

.toUpperCase();

Log.e("orion", packageSign);

return packageSign;

}

// *******************************************************

private String genAppSign(List<NameValuePair> params) {

StringBuilder sb = new StringBuilder();

for (int i = 0; i < params.size(); i++) {

sb.append(params.get(i).getName());

sb.append('=');

sb.append(params.get(i).getValue());

sb.append('&');

}

sb.append("key=");

sb.append(APP_KEY);

this.sb.append("sign str\n" + sb.toString() + "\n\n");

String appSign = MD5.getMessageDigest(sb.toString().getBytes())

.toUpperCase();

Log.e("orion", appSign);

return appSign;

}

// *******************************************************

private String toXml(List<NameValuePair> params) {

StringBuilder sb = new StringBuilder();

sb.append("<xml>");

for (int i = 0; i < params.size(); i++) {

sb.append("<" + params.get(i).getName() + ">");

sb.append(params.get(i).getValue());

sb.append("</" + params.get(i).getName() + ">");

}

sb.append("</xml>");

Log.e("orion", sb.toString());

return sb.toString();

}

private String genNonceStr() {

Random random = new Random();

return MD5.getMessageDigest(String.valueOf(random.nextInt(10000))

.getBytes());

}

// *******************************************************

private long genTimeStamp() {

return System.currentTimeMillis() / 1000;

}

// *******************************************************

private String genOutTradNo() {

Random random = new Random();

return MD5.getMessageDigest(String.valueOf(random.nextInt(10000))

.getBytes());

}

// *******************************************************

private String genProductArgs() {

StringBuffer xml = new StringBuffer();

try {

// String nonceStr = genNonceStr();

xml.append("</xml>");

List<NameValuePair> packageParams = new LinkedList<NameValuePair>();

packageParams.add(new BasicNameValuePair("appid",

Constants.WX_APP_ID));

packageParams.add(new BasicNameValuePair("body", "weixin"));// 商品名字

packageParams.add(new BasicNameValuePair("mch_id", APP_MCHID));

packageParams.add(new BasicNameValuePair("nonce_str", genNonceStr()));

packageParams.add(new BasicNameValuePair("notify_url",

"http://121.40.35.3/test"));

packageParams.add(new BasicNameValuePair("out_trade_no",

genOutTradNo()));

packageParams.add(new BasicNameValuePair("spbill_create_ip",

"127.0.0.1"));

DecimalFormat df2 = new DecimalFormat("0");

packageParams.add(new BasicNameValuePair("total_fee", df2

.format(pay_price * 100))); // 商品单价不能有小数点

// packageParams.add(new BasicNameValuePair("total_fee", "1")); //

// 商品单价

// 不能有小数点

packageParams.add(new BasicNameValuePair("trade_type", "APP"));

String sign = genPackageSign(packageParams);

packageParams.add(new BasicNameValuePair("sign", sign));

String xmlstring = toXml(packageParams);

return xmlstring;

} catch (Exception e) {

Log.e("s", "genProductArgs fail, ex = " + e.getMessage());

return null;

}

// *******************************************************

private void genPayReq() {

req.appId = Constants.WX_APP_ID;

req.partnerId = APP_MCHID;

req.prepayId = resultunifiedorder.get("prepay_id");

req.packageValue = "Sign=WXPay";

req.nonceStr = genNonceStr();

req.timeStamp = String.valueOf(genTimeStamp());

List<NameValuePair> signParams = new LinkedList<NameValuePair>();

signParams.add(new BasicNameValuePair("appid", req.appId));

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 = genAppSign(signParams);

sb.append("sign\n" + req.sign + "\n\n");

System.out.println("最后结果：-------------------------" + sb.toString());

dialog.cancel();

msgApi.sendReq(req);

Log.e("orion", signParams.toString());

}

清单文件需要的

<activity

android:name="com.pvgo.ivs.activity.wxapi.WXPayEntryActivity"

android:exported="true"

android:launchMode="singleInstance" />

<receiver

android:name="com.pvgo.ivs.Utils.AppRegister"

tools:ignore="InnerclassSeparator,ExportedReceiver" >

<intent-filter>

</intent-filter>

</receiver>

微信的广播

public class AppRegister extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

final IWXAPI api = WXAPIFactory.createWXAPI(context, null);

api.registerApp(Constants.WX_APP_ID);

}

以上这些是主要代码，其他的没啥说的，大家都会。

还有一些需要注意的是要吊起微信支付，你的keystore文件一定要配置到你的开发工具中，不然是没办法吊起来的。

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