1、通用的调用微信的方法
/**
*
* @param requestUrl 接口地址
* @param requestMethod 请求方法：POST、GET...
* @param output 接口入参
* @param needCert 是否需要数字证书
* @return
*/
private static StringBuffer httpsRequest(String requestUrl, String requestMethod, String output,boolean needCert)
throws NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException, MalformedURLException,
IOException, ProtocolException, UnsupportedEncodingException { URL url = new URL(requestUrl);
HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(); //是否需要数字证书
if(needCert){
//设置数字证书
setCert(connection);
}
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setUseCaches(false);
connection.setRequestMethod(requestMethod);
if (null != output) {
OutputStream outputStream = connection.getOutputStream();
outputStream.write(output.getBytes("UTF-8"));
outputStream.close();
} // 从输入流读取返回内容
InputStream inputStream = connection.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
} bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
connection.disconnect();
return buffer;
}
2、获取数字证书。JAVA只需要使用apiclient_cert.p12即可
/**
* 给HttpsURLConnection设置数字证书
* @param connection
* @throws IOException
*/
private static void setCert(HttpsURLConnection connection) throws IOException{
FileInputStream instream = null;
try {
KeyStore keyStore = KeyStore.getInstance("PKCS12");
//读取本机存放的PKCS12证书文件
instream = new FileInputStream(new File("certPath")); //certPath:数字证书路径 //指定PKCS12的密码(商户ID)
keyStore.load(instream, "商户ID".toCharArray());
SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore, "商户ID".toCharArray()).build();
//指定TLS版本
SSLSocketFactory ssf = sslcontext.getSocketFactory();
connection.setSSLSocketFactory(ssf);
} catch (Exception e){
e.printStackTrace();
}finally {
instream.close();
}
}
3、调用微信接口后，返回数据格式转换
/**
* 如果返回JSON数据包,转换为 JSONObject
* @param requestUrl
* @param requestMethod
* @param outputStr
* @param needCert
* @return
*/
public static JSONObject httpsRequestToJsonObject(String requestUrl, String requestMethod, String outputStr,boolean needCert) {
JSONObject jsonObject = null;
try {
StringBuffer buffer = httpsRequest(requestUrl, requestMethod, outputStr,needCert);
jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error("连接超时："+ce.getMessage());
} catch (Exception e) {
log.error("https请求异常："+e.getMessage());
} return jsonObject;
} /**
* 如果返回xml数据包，转换为Map<String, String>
* @param requestUrl
* @param requestMethod
* @param outputStr
* @param needCert
* @return
*/
public static Map<String, String> httpsRequestToXML(String requestUrl, String requestMethod, String outputStr,boolean needCert) {
Map<String, String> result = new HashMap<>();
try {
StringBuffer buffer = httpsRequest(requestUrl, requestMethod, outputStr,needCert);
result = parseXml(buffer.toString());
} catch (ConnectException ce) {
log.error("连接超时："+ce.getMessage());
} catch (Exception e) {
log.error("https请求异常："+e.getMessage());
}
return result;
} /**
* xml转为map
* @param xml
* @return
*/
@SuppressWarnings("unchecked")
public static Map<String, String> parseXml(String xml) {
Map<String, String> map = new HashMap<String, String>();
try {
Document document = DocumentHelper.parseText(xml); Element root = document.getRootElement();
List<Element> elementList = root.elements(); for (Element e : elementList){
map.put(e.getName(), e.getText());
}
} catch (DocumentException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return map;
}
4、微信回调系统，将回调结果转换为map类型。支付通知等场景使用
public static Map<Object, Object> parseXml(HttpServletRequest request)
{
// 解析结果存储在HashMap
Map<Object, Object> map = new HashMap<Object, Object>();
try {
InputStream inputStream; inputStream = request.getInputStream(); // 读取输入流
SAXReader reader = new SAXReader();
Document document = reader.read(inputStream);
System.out.println(document);
// 得到xml根元素
Element root = document.getRootElement();
// 得到根元素的所有子节点
List<Element> elementList = root.elements(); // 遍历所有子节点
for (Element e : elementList)
map.put(e.getName(), e.getText()); // 释放资源
inputStream.close();
inputStream = null;
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (DocumentException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return map;
}
5、普通javabean转换为排序SortedMap<Object,Object>，及签名。因微信签名要求按照accsii排序（升序）
/**
* 将一个 JavaBean 对象转化为一个 Map
* @param bean 要转化的JavaBean 对象
* @return 转化出来的 Map 对象
* @throws IntrospectionException 如果分析类属性失败
* @throws IllegalAccessException 如果实例化 JavaBean 失败
* @throws InvocationTargetException 如果调用属性的 setter 方法失败
*/
@SuppressWarnings({ "rawtypes"})
public static SortedMap<Object,Object> convertBean(Object bean) {
SortedMap<Object,Object> returnMap = new TreeMap<Object,Object>();
try {
Class type = bean.getClass();
BeanInfo beanInfo = Introspector.getBeanInfo(type);
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
for (int i = 0; i< propertyDescriptors.length; i++) {
PropertyDescriptor descriptor = propertyDescriptors[i];
String propertyName = descriptor.getName();
if (!propertyName.equals("class")) {
Method readMethod = descriptor.getReadMethod();
Object result = readMethod.invoke(bean, new Object[0]);
if (result != null) {
returnMap.put(propertyName, result);
} else {
returnMap.put(propertyName, "");
}
}
}
} catch (IntrospectionException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return returnMap;
} /**
* 生成签名
* @param parameters
* @return
*/
public static String createSgin(SortedMap<Object,Object> parameters)
{
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=" + wxConfig.getWxKey());
String sgin=MD5.sign(sb.toString());
return sgin;
}
/**
* 获取ip地址
* @param request
* @return
*/
public static String getIpAddr(HttpServletRequest request) {
InetAddress addr = null;
try {
addr = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
return request.getRemoteAddr();
}
byte[] ipAddr = addr.getAddress();
String ipAddrStr = "";
for (int i = 0; i < ipAddr.length; i++) {
if (i > 0) {
ipAddrStr += ".";
}
ipAddrStr += ipAddr[i] & 0xFF;
}
return ipAddrStr;
}
6、其他一些辅助类、方法
/**
* 获得指定长度的随机字符串
* @author Administrator
*
*/
public class StringWidthWeightRandom {
private int length = 32;
private char[] chars = new char[]{
'0','1','2','3','4','5','6','7','8','9',
'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
'A','B','V','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
};
private Random random = new Random(); //参数为生成的字符串的长度，根据给定的char集合生成字符串
public String getNextString(int length){ char[] data = new char[length]; for(int i = 0;i < length;i++){
int index = random.nextInt(chars.length);
data[i] = chars[index];
}
String s = new String(data);
return s;
} public int getLength() {
return length;
} public void setLength(int length) {
this.length = length;
}
}
public class UtilDate {
/** 年月日时分秒(无下划线) yyyyMMddHHmmss */
public static final String dtLong = "yyyyMMddHHmmss";
/** 完整时间 yyyy-MM-dd HH:mm:ss */
public static final String simple = "yyyy-MM-dd HH:mm:ss";
/** 年月日(无下划线) yyyyMMdd */
public static final String dtShort = "yyyyMMdd";
/**
* 返回系统当前时间(精确到毫秒),作为一个唯一的订单编号
* @return
* 以yyyyMMddHHmmss为格式的当前系统时间
*/
public static String getDateLong(){
Date date=new Date();
DateFormat df=new SimpleDateFormat(dtLong);
return df.format(date);
}
/**
* 获取系统当前日期(精确到毫秒)，格式：yyyy-MM-dd HH:mm:ss
* @return
*/
public static String getDateFormatter(){
Date date=new Date();
DateFormat df=new SimpleDateFormat(simple);
return df.format(date);
}
/**
* 获取系统当期年月日(精确到天)，格式：yyyyMMdd
* @return
*/
public static String getDate(){
Date date=new Date();
DateFormat df=new SimpleDateFormat(dtShort);
return df.format(date);
}
} public class MD5 {
public static String sign(String str){
MessageDigest md5;
String sgin = "";
try {
md5 = MessageDigest.getInstance("MD5");
md5.reset();
md5.update(str.getBytes("UTF-8"));
sgin = byteToStr(md5.digest()).toUpperCase();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return sgin;
}
/**
* 将字节数组转换为十六进制字符串
*
* @param byteArray
* @return
*/
public static String byteToStr(byte[] byteArray) {
String strDigest = "";
for (int i = 0; i < byteArray.length; i++) {
strDigest += byteToHexStr(byteArray[i]);
}
return strDigest;
}
/**
* 将字节转换为十六进制字符串
*
* @param btyes
* @return
*/
public static String byteToHexStr(byte bytes) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
char[] tempArr = new char[2];
tempArr[0] = Digit[(bytes >>> 4) & 0X0F];
tempArr[1] = Digit[bytes & 0X0F];
String s = new String(tempArr);
return s;
}
}