工具类
HttpUtil：
package com.rongzhong.utils.weixin;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import org.apache.log4j.Logger;
public class HttpUtil {
private static final Logger logger = Logger.getLogger(HttpUtil.class);
private final static int CONNECT_TIMEOUT = 5000; // in milliseconds
private final static String DEFAULT_ENCODING = "UTF-8";
public static String postData(String urlStr, String data) {
return postData(urlStr, data, null);
}
public static String postData(String urlStr, String data, String contentType) {
BufferedReader reader = null;
try {
URL url = new URL(urlStr);
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
conn.setConnectTimeout(CONNECT_TIMEOUT);
conn.setReadTimeout(CONNECT_TIMEOUT);
if (contentType != null)
conn.setRequestProperty("content-type", contentType);
OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(), DEFAULT_ENCODING);
if (data == null)
data = "";
writer.write(data);
writer.flush();
writer.close();
reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), DEFAULT_ENCODING));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line);
sb.append("\r\n");
}
return sb.toString();
} catch (IOException e) {
logger.error("Error connecting to " + urlStr + ": " + e.getMessage());
} finally {
try {
if (reader != null)
reader.close();
} catch (IOException e) {
}
}
return null;
}
}
===================================================
MD5Util：
package com.rongzhong.utils.weixin;
import java.security.MessageDigest;
public class MD5Util {
private static String byteArrayToHexString(byte b[]) {
StringBuffer resultSb = new StringBuffer();
for (int i = 0; i < b.length; i++)
resultSb.append(byteToHexString(b[i]));
return resultSb.toString();
}
private static String byteToHexString(byte b) {
int n = b;
if (n < 0)
n += 256;
int d1 = n / 16;
int d2 = n % 16;
return hexDigits[d1] + hexDigits[d2];
}
public static String MD5Encode(String origin, String charsetname) {
String resultString = null;
try {
resultString = new String(origin);
MessageDigest md = MessageDigest.getInstance("MD5");
if (charsetname == null || "".equals(charsetname))
resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
else
resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
} catch (Exception exception) {
}
return resultString;
}
private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d",
"e", "f" };
}
====================================================================
PayCommonUtil：
package com.rongzhong.utils.weixin;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
public class PayCommonUtil {
/**
* 是否签名正确,规则是:按参数名称a-z排序,遇到空值的参数不参加签名。
*
* @return boolean
*/
public static boolean isTenpaySign(String characterEncoding, SortedMap<Object, Object> packageParams,
String API_KEY) {
StringBuffer sb = new StringBuffer();
Set es = packageParams.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
String v = (String) entry.getValue();
if (!"sign".equals(k) && null != v && !"".equals(v)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + API_KEY);
// 算出摘要
String mysign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toLowerCase();
String tenpaySign = ((String) packageParams.get("sign")).toLowerCase();
// System.out.println(tenpaySign + " " + mysign);
return tenpaySign.equals(mysign);
}
/**
* @author
* @date 2016-4-22
* @Description：sign签名
* @param characterEncoding
* 编码格式
* @param parameters
* 请求参数
* @return
*/
public static String createSign(String characterEncoding, SortedMap<Object, Object> packageParams, String API_KEY) {
StringBuffer sb = new StringBuffer();
Set es = packageParams.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
String v = (String) entry.getValue();
if (null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + API_KEY);
String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase();
return sign;
}
/**
* @author
* @date 2016-4-22
* @Description：将请求参数转换为xml格式的string
* @param parameters
* 请求参数
* @return
*/
public static String getRequestXml(SortedMap<Object, Object> parameters) {
StringBuffer sb = new StringBuffer();
sb.append("<xml>");
Set es = parameters.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
String v = (String) entry.getValue();
if ("attach".equalsIgnoreCase(k) || "body".equalsIgnoreCase(k) || "sign".equalsIgnoreCase(k)) {
sb.append("<" + k + ">" + "<![CDATA[" + v + "]]></" + k + ">");
} else {
sb.append("<" + k + ">" + v + "</" + k + ">");
}
}
sb.append("</xml>");
return sb.toString();
}
/**
* 取出一个指定长度大小的随机正整数.
*
* @param length
* int 设定所取出随机数的长度。length小于11
* @return int 返回生成的随机数。
*/
public static int buildRandom(int length) {
int num = 1;
double random = Math.random();
if (random < 0.1) {
random = random + 0.1;
}
for (int i = 0; i < length; i++) {
num = num * 10;
}
return (int) ((random * num));
}
/**
* 获取当前时间 yyyyMMddHHmmss
*
* @return String
*/
public static String getCurrTime() {
Date now = new Date();
SimpleDateFormat outFormat = new SimpleDateFormat("yyyyMMddHHmmss");
String s = outFormat.format(now);
return s;
}
}
========================================================
package com.rongzhong.utils.weixin;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class PayConfigUtil {
//以下相关参数需要根据自己实际情况进行配置
public static String APP_ID = "";// appid
public static String APP_SECRET = "";// appsecret
public static String MCH_ID = "";// 你的商业号
public static String API_KEY = "";// API key
public String CREATE_IP="";// APP和网页支付提交用户端ip，Native支付填调用微信支付API的机器IP。
public static String UFDODER_URL = "";//微信统一下单接口
public static String NOTIFY_URL = "";//回调地址(微信里配置)
public PayConfigUtil() throws UnknownHostException{
InetAddress ip = InetAddress.getLocalHost();
this.CREATE_IP=ip.getHostAddress();
}
}
========================================================
XMLUtil：
package com.rongzhong.utils.weixin;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;
public class XMLUtil {
/**
* 解析xml,返回第一级元素键值对。如果第一级元素有子节点，则此节点的值是子节点的xml数据。
* @param strxml
* @return
* @throws JDOMException
* @throws IOException
*/
public static Map doXMLParse(String strxml) throws JDOMException, IOException {
strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");
if(null == strxml || "".equals(strxml)) {
return null;
}
Map m = new HashMap();
InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build(in);
Element root = doc.getRootElement();
List list = root.getChildren();
Iterator it = list.iterator();
while(it.hasNext()) {
Element e = (Element) it.next();
String k = e.getName();
String v = "";
List children = e.getChildren();
if(children.isEmpty()) {
v = e.getTextNormalize();
} else {
v = XMLUtil.getChildrenText(children);
}
m.put(k, v);
}
//关闭流
in.close();
return m;
}
/**
* 获取子结点的xml
* @param children
* @return String
*/
public static String getChildrenText(List children) {
StringBuffer sb = new StringBuffer();
if(!children.isEmpty()) {
Iterator it = children.iterator();
while(it.hasNext()) {
Element e = (Element) it.next();
String name = e.getName();
String value = e.getTextNormalize();
List list = e.getChildren();
sb.append("<" + name + ">");
if(!list.isEmpty()) {
sb.append(XMLUtil.getChildrenText(list));
}
sb.append(value);
sb.append("</" + name + ">");
}
}
return sb.toString();
}
}
========================================================
展示在页面：
生成二维码在页面
package com.rongzhong.service.draw;
import java.awt.image.BufferedImage;
import java.io.IOException;
import com.google.zxing.WriterException;
public interface QRCodeService {
public BufferedImage createQRCode(final String url) throws WriterException, IOException;
}
package com.rongzhong.service.impl.drawImpl;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import org.springframework.stereotype.Service;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.rongzhong.service.draw.QRCodeService;
@Service
public class QRCodeServiceImpl implements QRCodeService {
public BufferedImage createQRCode(String url) throws WriterException, IOException {
BufferedImage image = null;
//二维码图片输出流
OutputStream out = null;
MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
Map hints = new HashMap();
// 设置编码方式
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
/*hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);*/
BitMatrix bitMatrix = multiFormatWriter.encode(url, BarcodeFormat.QR_CODE, 400, 400,hints);
bitMatrix = updateBit(bitMatrix,10);
image = MatrixToImageWriter.toBufferedImage(bitMatrix);
return image;
}
/**
* 自定义白边边框宽度
*
* @param matrix
* @param margin
* @return
*/
private static BitMatrix updateBit(final BitMatrix matrix, final int margin) {
int tempM = margin * 2;
//获取二维码图案的属性
int[] rec = matrix.getEnclosingRectangle();
int resWidth = rec[2] + tempM;
int resHeight = rec[3] + tempM;
// 按照自定义边框生成新的BitMatrix
BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
resMatrix.clear();
//循环，将二维码图案绘制到新的bitMatrix中
for (int i = margin; i < resWidth - margin; i++) {
for (int j = margin; j < resHeight - margin; j++) {
if (matrix.get(i - margin + rec[0], j - margin + rec[1])) {
resMatrix.set(i, j);
}
}
}
return resMatrix;
}
}
========================================================
package com.rongzhong.controller;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.rongzhong.service.draw.QRCodeService;
import com.rongzhong.utils.weixin.HttpUtil;
import com.rongzhong.utils.weixin.PayCommonUtil;
import com.rongzhong.utils.weixin.PayConfigUtil;
import com.rongzhong.utils.weixin.XMLUtil;
@Controller
@RequestMapping
public class WxPayController {
private static final Logger logger = Logger.getLogger(WxPayController.class);
@Autowired
private QRCodeService qrCodeService;
@RequestMapping("/WXQRcode")
public void getQRCode(Model m,HttpServletRequest request,HttpServletResponse response){
//二维码图片输出流
OutputStream out = null;
try{
response.setContentType("image/jpeg;charset=UTF-8");
BufferedImage image = qrCodeService.createQRCode(WxPayController.weixin_pay_URL());
//实例化输出流对象
out = response.getOutputStream();
//画图
ImageIO.write(image, "png", response.getOutputStream());
out.flush();
out.close();
}catch (Exception e){
logger.error("生成二维码出现异常"+e);
}finally {
try{
if (null != response.getOutputStream()) {
response.getOutputStream().close();
}
if (null != out) {
out.close();
}
}catch(Exception e){
e.printStackTrace();
}
}
}
/**
* 生成二维码的链接
* @return
* @throws Exception
*/
public static String weixin_pay_URL() throws Exception {
// 账号信息
String appid = PayConfigUtil.APP_ID; // appid
//String appsecret = PayConfigUtil.APP_SECRET; // appsecret
String mch_id = PayConfigUtil.MCH_ID; // 商业号
String key = PayConfigUtil.API_KEY; // key
String currTime = PayCommonUtil.getCurrTime();
String strTime = currTime.substring(8, currTime.length());
String strRandom = PayCommonUtil.buildRandom(4) + "";
String nonce_str = strTime + strRandom;
String order_price = ""; // 价格 注意：价格的单位是分
String body = ""; // 商品名称
String out_trade_no = ""; // 订单号
// 获取发起电脑 ip
PayConfigUtil payConfig=new PayConfigUtil();
String spbill_create_ip = payConfig.CREATE_IP;
// 回调接口
String notify_url = PayConfigUtil.NOTIFY_URL;
String trade_type = "NATIVE";
SortedMap<Object,Object> packageParams = new TreeMap<Object,Object>();
packageParams.put("appid", appid);
packageParams.put("mch_id", mch_id);
packageParams.put("nonce_str", nonce_str);
packageParams.put("body", body);
packageParams.put("out_trade_no", out_trade_no);
packageParams.put("total_fee", order_price);
packageParams.put("spbill_create_ip", spbill_create_ip);
packageParams.put("notify_url", notify_url);
packageParams.put("trade_type", trade_type);
String sign = PayCommonUtil.createSign("UTF-8", packageParams,key);
packageParams.put("sign", sign);
String requestXML = PayCommonUtil.getRequestXml(packageParams);
System.out.println(requestXML);
String resXml = HttpUtil.postData(PayConfigUtil.UFDODER_URL, requestXML);
Map map = XMLUtil.doXMLParse(resXml);
//String return_code = (String) map.get("return_code");
//String prepay_id = (String) map.get("prepay_id");
String urlCode = (String) map.get("code_url");
if(StringUtils.isEmpty(urlCode)){
urlCode="";
}
return urlCode;
}
public static void main(String[] args) throws Exception {
WxPayController wc=new WxPayController();
System.out.println("weixin_generate_url:"+wc.weixin_pay_URL());
}
// 特殊字符处理
public static String UrlEncode(String src) throws UnsupportedEncodingException {
return URLEncoder.encode(src, "UTF-8").replace("+", "%20");
}
/**
* 响应回调
* @param request
* @param response
* @throws Exception
*/
@RequestMapping("/WXQRcodeMessage")
public void weixin_notify(HttpServletRequest request,HttpServletResponse response) throws Exception{
//读取参数
InputStream inputStream ;
StringBuffer sb = new StringBuffer();
inputStream = request.getInputStream();
String s ;
BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
while ((s = in.readLine()) != null){
sb.append(s);
}
in.close();
inputStream.close();
//解析xml成map
Map<String, String> m = new HashMap<String, String>();
m = XMLUtil.doXMLParse(sb.toString());
//过滤空 设置 TreeMap
SortedMap<Object,Object> packageParams = new TreeMap<Object,Object>();
Iterator it = m.keySet().iterator();
while (it.hasNext()) {
String parameter = (String) it.next();
String parameterValue = m.get(parameter);
String v = "";
if(null != parameterValue) {
v = parameterValue.trim();
}
packageParams.put(parameter, v);
}
// 账号信息
String key = PayConfigUtil.API_KEY; // key
logger.error(packageParams);
//判断签名是否正确
if(PayCommonUtil.isTenpaySign("UTF-8", packageParams,key)) {
//------------------------------
//处理业务开始
//------------------------------
String resXml = "";
if("SUCCESS".equals((String)packageParams.get("result_code"))){
// 这里是支付成功
//////////执行自己的业务逻辑////////////////
String mch_id = (String)packageParams.get("mch_id");
String openid = (String)packageParams.get("openid");
String is_subscribe = (String)packageParams.get("is_subscribe");
String out_trade_no = (String)packageParams.get("out_trade_no");
String total_fee = (String)packageParams.get("total_fee");
logger.info("mch_id:"+mch_id);
logger.info("openid:"+openid);
logger.info("is_subscribe:"+is_subscribe);
logger.info("out_trade_no:"+out_trade_no);
logger.info("total_fee:"+total_fee);
//////////执行自己的业务逻辑////////////////
logger.info("支付成功");
//通知微信.异步确认成功.必写.不然会一直通知后台.八次之后就认为交易失败了.
resXml = "<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>"
+ "<return_msg><![CDATA[OK]]></return_msg>" + "</xml> ";
} else {
logger.info("支付失败,错误信息：" + packageParams.get("err_code"));
resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>"
+ "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> ";
}
//------------------------------
//处理业务完毕
//------------------------------
BufferedOutputStream out = new BufferedOutputStream(
response.getOutputStream());
out.write(resXml.getBytes());
out.flush();
out.close();
} else{
logger.info("通知签名验证失败");
}
}
}
