记录下关于微信h5支付那点事儿（百分之80拷贝官方）

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;

import java.util.HashMap;
import java.util.Map;

public class WebPayActivity extends Activity {

    private WebPayActivity mActivity = WebPayActivity.this;

    private WebView mWebView;

    // h5的url链接
    private static final String WX_H5_PAY_TEST_URL = "http://wxpay.wxutil.com/mch/pay/h5.v2.php";
    // 支付域名（公司申请H5的域名）
    private static final String AY_WX_H5_DOMAIN_URL = "http://wxpay.wxutil.com";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web_pay);
        initView();
    }

    private void initView() {
        mWebView = findViewById(R.id.id_web_show);
        mWebView.getSettings().setJavaScriptEnabled(true);
        // referer 目前测试加不加都不影响，不晓得网上说的各种版本是什么鬼？好奇
        Map<String, String> extraHeaders = new HashMap<>();
        extraHeaders.put("Referer", AY_WX_H5_DOMAIN_URL);
        mWebView.loadUrl(WX_H5_PAY_TEST_URL, extraHeaders);
        mWebView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if (url.startsWith("weixin://wap/pay?")) {
                    try {
                        Intent intent = new Intent();
                        intent.setAction(Intent.ACTION_VIEW);
                        intent.setData(Uri.parse(url));
                        startActivity(intent);
                        return true;
                    } catch (Exception e) {
                        Toast.makeText(mActivity, "请安装微信App！", Toast.LENGTH_SHORT).show();
                        mWebView.goBack();
                    }
                }
                return super.shouldOverrideUrlLoading(view, url);
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
            }

            @Override
            public void onReceivedError(WebView view, int errorCode,
                                        String description, String failingUrl) {
                super.onReceivedError(view, errorCode, description, failingUrl);
            }

        });

    }

}

<script type="text/javascript">
    $(function() {
        $.post("WxPay.ashx", {}, function(d) {
            window.location = d;
        });
    })
</script>

<script type="text/javascript">
    var fp=new Fingerprint2();
    fp.get(function(result)
    {
    $.getJSON("h5.json.php?code="+result, function(d){
    if(d.errmsg == ''){
        $('#getBrandWCPayRequest').attr("href",d.url+'&redirect_url=http%3a%2f%2fwxpay.wxutil.com%2fmch%2fpay%2fh5jumppage.php');
     }else{
      alert(d.errmsg);              
    }
    });                                                            
    });
</script>