Android开发支付集成——微信集成

 支付宝支付传送门：https://www.cnblogs.com/dingxiansen/p/9208949.html

二、微信支付

1. 微信支付流程图

相比较而言，微信支付是要比支付宝麻烦一些，并且微信的开发文档个人也感觉写的比较乱，初次接触会有些懵。

2. 集成前准备

1. 注册、登录微信开发者平台
2. 注册应用，得到APPID申请开通微信支付，填写申请资料
3. 找到 开发者文档 下载SDK

3.开始集成

　　微信支付可以直接在app build.gradle中设置

/*微信支付集成*/
    compile 'com.tencent.mm.opensdk:wechat-sdk-android-with-mta:+'

　　然后在你的包下，这里要注意以下放在指定包下边

　　

　AndroidManifest.xml配置

 <!--微信支付，回掉-->
        <activity
            android:name=".wxapi.WXPayEntryActivity"
            android:exported="true"
            android:launchMode="singleTop" />

微信的后台参数返回，相对于支付宝的返回信息，微信返回信息更加清晰一下，不过没啥用，一会加密完都一个样子

格式化后：

{
    "msg":"success",
    "code":200,
    "data":{
        "appid":"自己申请的appId",
        "noncestr":"jqEmamoTbMoi0hRP",
        "package":"Sign=WXPay",
        "partnerid":"150****351",
        "prepayid":"wx21144021******fd37e2948041031",
        "sign":"50E345DCF6900A*****10126E7424",
        "timestamp":"1529563221"
    },
    "status":"0"
}

拿到返回参数，微信支付方法

 /*微信支付测试OK*/
    private void testWxPay(final String key, final String value) {
        StringRequest stringRequest = new StringRequest(Request.Method.POST, NetWorkUrl.WXPAY, new Response.Listener<String>() {
            @RequiresApi(api = Build.VERSION_CODES.M)
            @Override
            public void onResponse(String s) {
                Log.e("GoPayOrderActivity", "-------getJson2-------" + s.toString());

                /*判断code*/
                String code = (JSONObject.parseObject(s.toString()).getString("code"));
                if (code.equals("200")) {
                    String jsonObject = JSONObject.parseObject(s.toString()).getString("data");
                    String appId = JSONObject.parseObject(jsonObject).getString("appid");
                    String sign = JSONObject.parseObject(jsonObject).getString("sign");
                    String packageWx = JSONObject.parseObject(jsonObject).getString("package");
                    String partnerid = JSONObject.parseObject(jsonObject).getString("partnerid");
                    String prepayid = JSONObject.parseObject(jsonObject).getString("prepayid");
                    String noncestr = JSONObject.parseObject(jsonObject).getString("noncestr");
                    String timestamp = JSONObject.parseObject(jsonObject).getString("timestamp");
                    Log.e("GoPayOrderActivity", "onResponse: appId" + appId);
                    Log.e("GoPayOrderActivity", "onResponse: sign" + sign);
                    Log.e("GoPayOrderActivity", "onResponse: package" + packageWx);
                    Log.e("GoPayOrderActivity", "onResponse: partnerid" + partnerid);
                    Log.e("GoPayOrderActivity", "onResponse: prepayid" + prepayid);
                    Log.e("GoPayOrderActivity", "onResponse: noncestr" + noncestr);
                    Log.e("GoPayOrderActivity", "onResponse: timestamp" + timestamp);
                    api = WXAPIFactory.createWXAPI(GoPayOrderActivity.this, appId);

                    PayReq req = new PayReq();
                    //req.appId = "wxf8b4f85f3a794e77";  // 测试用appId
                    //req的参数接受可以拿取order对象的数据
                    req.appId = appId;
                    req.partnerId = partnerid;
                    req.prepayId = prepayid;
                    req.nonceStr = noncestr;
                    req.timeStamp = timestamp;
                    req.packageValue = packageWx;
                    req.sign = sign;
                    req.extData = "app data"; // optional
                    // 在支付之前，如果应用没有注册到微信，应该先调用IWXMsg.registerApp将应用注册到微信
                    api.sendReq(req);
                }
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError volleyError) {

            }
        }) {
            @Override
            public Map<String, String> getParams() throws AuthFailureError {
                Log.e("GoPayOrderActivity", "getParams:-----------------> " + userEntity.getPhone());

                Map<String, String> map = new HashMap<String, String>();
                map.put("account", userEntity.getPhone());
                map.put(key, value);
//                map.put("productId", "1");
//                map.put("productId", "1");
                map.put("token", userEntity.getToken());
                return map;
            }

            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                HashMap<String, String> headers = new HashMap<String, String>();
                if (userEntity.getToken().equals("") && userEntity != null) {
                    headers.put("Authorization", userEntity.getToken());
                }
                return headers;
            }

        };
        /*设置请求一次*/
        stringRequest.setRetryPolicy(
                new DefaultRetryPolicy(
                        5000,//默认超时时间，应设置一个稍微大点儿的，例如本处的500000
                        DefaultRetryPolicy.DEFAULT_MAX_RETRIES,//默认最大尝试次数
                        DefaultRetryPolicy.DEFAULT_BACKOFF_MULT
                )
        );
        AppApplication.getHttpQueues().add(stringRequest);/*请求数据*/
    }

微信支付回调

 WXPayEntryActivity.java

public class WXPayEntryActivity extends Activity implements IWXAPIEventHandler {

    private static final String TAG = "WXPayEntryActivity";

    private IWXAPI api;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pay_result);

        api = WXAPIFactory.createWXAPI(this, Constants.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) {
        Log.d(TAG, "onPayFinish, errCode = " + resp.errCode);
        if (resp.getType() == ConstantsAPI.COMMAND_PAY_BY_WX) {
            AlertDialog.Builder builder = new AlertDialog.Builder(WXPayEntryActivity.this);
            /*注释掉的可以成功*/
            builder.setTitle(R.string.app_tip);
            builder.setMessage(getString(R.string.pay_result_callback_msg, String.valueOf(resp.errCode)));
            builder.show();
            int code = resp.errCode;
            switch (code) {
                case 0:
                    MobclickAgent.onEvent(WXPayEntryActivity.this, "payment_success", "付款成功");
//                    finish();
//                    Toast.makeText(this, "支付成功", Toast.LENGTH_SHORT).show();
                    /*跳转我的会员页面*/
                    AppApplication.addActivity(WXPayEntryActivity.this);
                    Intent intent = new Intent(this, MyVipActivity.class);
                    startActivity(intent);
                    break;
                case -1:
                    MobclickAgent.onEvent(WXPayEntryActivity.this, "payment_fali", "付款失败");
//                    失败原因 可能的原因：签名错误、未注册APPID、项目设置APPID不正确、注册的APPID与设置的不匹配，其他异常等
                    Toast.makeText(this, "支付失败", Toast.LENGTH_SHORT).show();
                    finish();
                    break;
                case -2:
                    Toast.makeText(this, "支付取消", Toast.LENGTH_SHORT).show();
                    finish();
                    break;
                default:
                    Toast.makeText(this, "支付取消", Toast.LENGTH_SHORT).show();
                    finish();
                    break;
            }

        }

    }
}

完成上述，微信支付也是可以完成的了，注意测试的时候要用Release包，测试包是调用不起来微信的

如果问题或建议请发送到我的邮箱：dingchao7323@qq.com