java开发h5微信支付接口
本人新手,找了好长时间都没有找到h5的java开发源码,自己看官方文档研究了两天满满的都是心酸,主要是为自己以后翻看留个记录,以免忘记
申请那一套我就不讲了,首先必须保证打包app时的签名必须和你申请时填写的一致,要不然跑不通的.直接上源码:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.URL;
import java.net.URLConnection;
import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import util.MD5Util;
import util.UtilDate;
public class PayTest {
HttpServletResponse response = ServletActionContext.getResponse();
private static String Key = "PpKGJMuxmWf9hvK4X3BOJ6gKkfDtGv5D";
private static String appid = "**********";// app的id
private static String mch_id = "**********";// 商户号
private static String body = "就是调起微信支付是显示什么";// 备注
private String out_trade_no = UtilDate.getOrderNum();// 商户订单号
private static String spbill_create_ip = getIpAddr();// 终端ip
private static String notify_url = "我填的是一个空白页面的地址";// 通知地址
private static String trade_type = "APP";// 支付类型
private static String url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
private static String characterEncoding = "UTF-8";// 编码格式
private static String nonce_str = getUUID();// 随机支付串
private String Money;//传过来的钱数
public String getMoney() {
return Money;
}
public void setMoney(String money) {
Money = money;
}
public void WeiXinCZ() {
Map
String sjs = getUUID();
String sj = System.currentTimeMillis()+"";
sj = sj.substring(0,sj.length()-3);
String sjc = sj;
SortedMap
parameters.put("appid", map.get("appid"));
parameters.put("partnerid", map.get("mch_id"));
parameters.put("prepayid", map.get("prepay_id"));
parameters.put("package", "Sign=WXPay");
parameters.put("noncestr", map.get("nonce_str"));
parameters.put("timestamp", sjc);
String sign = createSign(characterEncoding, parameters);
String str = "{\"appid\":\"" + map.get("appid") + "\",\"partnerid\":\""
+ map.get("mch_id") + "\",\"prepayid\":\""
+ map.get("prepay_id")
+ "\",\"package\":\"Sign=WXPay\",\"noncestr\":\""
+ map.get("nonce_str") + "\",\"timestamp\":\"" + sjc
+ "\",\"sign\":\"" + sign + "\"}";
try {
this.response.setContentType("text/html;charset=utf-8");
this.response.setHeader("Access-Control-Max-Age", "3600");
this.response.setHeader("Access-Control-Allow-Origin", "*");
this.response.addHeader("Access-Control-Allow-Methods",
"GET, POST, PUT, DELETE, OPTIONS");
this.response.setHeader("Access-Control-Allow-Headers",
"x-requested-with");
System.out.println(str);
PrintWriter out = this.response.getWriter();
out.print(str);
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
// 生成预订单
public Map
try {// 微信api提供的参数
@SuppressWarnings("unused")
String total_fee = ((int)(Double.parseDouble(Money) * 100)) + "";// 支付金额
SortedMap
parameters.put("appid", appid);
parameters.put("mch_id", mch_id);
parameters.put("body", body);
parameters.put("nonce_str", nonce_str);
parameters.put("out_trade_no", out_trade_no);
parameters.put("trade_type", trade_type);
parameters.put("total_fee", total_fee);
parameters.put("spbill_create_ip", spbill_create_ip);
parameters.put("notify_url", notify_url);
String sign = createSign(characterEncoding, parameters);
String param = "
+ "
+ nonce_str + "
+ "
+ "
+ spbill_create_ip + "
+ total_fee + "" + "
+ "
String xmlStr = sendPost(url, param);
System.out.println(xmlStr);
Document document = DocumentHelper.parseText(xmlStr);
// 获取根节点元素对象
Element root = document.getRootElement();
Map
return getstr;
} catch (DocumentException e) {
e.printStackTrace();
}
return null;
}
@SuppressWarnings("unchecked")
private static Map
List list = element.elements();
Map
// 递归方法
for (Iterator its = list.iterator(); its.hasNext();) {
Element chileEle = (Element) its.next();
map.put(chileEle.getName(), chileEle.getText());
getElement(chileEle);
}
return map;
}
/**
* 微信支付签名算法sign
*
* @param characterEncoding
* @param parameters
* @return
*/
@SuppressWarnings("unchecked")
public static String createSign(String characterEncoding,
SortedMap
StringBuffer sb = new StringBuffer();
Set es = parameters.entrySet();// 所有参与传参的参数按照accsii排序（升序）
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
Object v = entry.getValue();
if (null != v && !"".equals(v) && !"sign".equals(k)
&& !"key".equals(k)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + Key);
String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding)
.toUpperCase();
return sign;
}
// 获取访问者ip
@SuppressWarnings("unused")
private static String getIpAddr() {
String ipAddress = "";
// ipAddress = this.getRequest().getRemoteAddr();
HttpServletRequest res = ServletActionContext.getRequest();
ipAddress = res.getHeader("x-forwarded-for");
if (ipAddress == null || ipAddress.length() == 0
|| "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = res.getHeader("Proxy-Client-IP");
}
if (ipAddress == null || ipAddress.length() == 0
|| "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = res.getHeader("WL-Proxy-Client-IP");
}
if (ipAddress == null || ipAddress.length() == 0
|| "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = res.getRemoteAddr();
if (ipAddress.equals("127.0.0.1")) {
// 根据网卡取本机配置的IP
InetAddress inet = null;
try {
inet = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
e.printStackTrace();
}
ipAddress = inet.getHostAddress();
}
}
// 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length()
// = 15
if (ipAddress.indexOf(",") > 0) {
ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
}
}
return ipAddress;
}
/**
* 向指定 URL 发送POST方法的请求
*
* @param url
* 发送请求的 URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendPost(String url, String param) {
String UTF8 = "UTF-8";
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
// TODO 新添加的请求头编码
conn.setRequestProperty("Accept-Charset", "UTF-8");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(new OutputStreamWriter(
conn.getOutputStream(), "utf-8"));
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
// TODO 新添加设置，返回编码
in = new BufferedReader(new InputStreamReader(
conn.getInputStream(), "utf-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送 POST 请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
public static String getUUID() {
UUID uuid = UUID.randomUUID();
String str = uuid.toString();
// 去掉"-"符号
String temp = str.substring(0, 8) + str.substring(9, 13)
+ str.substring(14, 18);
return temp;
}
}
原理:提交预定单:返回成功后才可以继续拼接字符串然后加密在传给前台