原文地址：/ooiuy450/article/details/77623384
在进入微信开发前，首先我们要将我们的ip映射成url访问地址，这里我用的是natapp，感觉还是挺稳定的，只不过映射的地址搁一段时间会被替换掉
natapp的下载地址/
接下来进入到微信的公众号平台里面去，如果还没申请的话可以进行申请，微信的公众号分为三种：订阅号，服务号，企业号，由于这里是屌丝的聚集地，所以只能用订阅号来玩一玩。
公众号平台地址：
https://mp./cgi-bin/home
接着我们点击开发-》基本配置-》服务器配置上点击启动，输入我们的后台网址，令牌，接着点击确定就可以了，如果提示错误，说明后台和微信平台没对接成功，需要检查一下传入的参数是否正确。如下是我的ip地址
记得启动的natapp服务，以下是我用springmvc搭建的服务器代码，如下：
@Controller@RequestMapping("wechat")public class WeChatController {@RequestMapping(value = "/hello")public String index(){return "index";}@RequestMapping(value = "/detail")public String detail(){return "detailpage";}@RequestMapping(value = "/home",method= RequestMethod.GET)@ResponseBodypublic void valid(HttpServletRequest request, HttpServletResponse response) throws IOException {boolean isGet = request.getMethod().toLowerCase().equals("get");String code = request.getParameter("code");if (isGet) {// 微信加密签名String signature = request.getParameter("signature");// 时间戳String timestamp = request.getParameter("timestamp");// 随机数String nonce = request.getParameter("nonce");// 随机字符串String echostr = request.getParameter("echostr");PrintWriter out = response.getWriter();// 通过检验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败if (SignUtil.checkSignature(signature, timestamp, nonce)) {out.print(echostr);}out.close();out = null;}else{userpost(request,response);}}@RequestMapping(value = "/home",method= RequestMethod.POST)public void userpost(HttpServletRequest request, HttpServletResponse response) throws IOException {request.setCharacterEncoding("UTF-8");PrintWriter out = response.getWriter();String str = null;String code = request.getParameter("code");try {Map<String, String> message = MessageUtil.xmlToMap(request);String fromUser = message.get("FromUserName");String toUser = message.get("ToUserName");String content = message.get("Content");String msgType = message.get("MsgType");String msgId = message.get("MsgId");Message ms = new Message();ms.setContent(content);ms.setFromUserName(toUser);ms.setToUserName(fromUser);ms.setMsgType(msgType);str = MessageUtil.textMessageToXml(ms).replace("\n","").replace(" ","");out.print(str);out.close();out = null;}catch (Exception e){e.printStackTrace();}}
签名认证
/** * 请求校验工具类 * * @author liufeng * @date -05-18 */ public class SignUtil {// 与接口配置信息中的Token要一致 private static String token = "chenmianhai";/** * 验证签名 * * @param signature * @param timestamp * @param nonce * @return */ public static boolean checkSignature(String signature, String timestamp, String nonce) { String[] arr = new String[] { token, timestamp, nonce }; // 将token、timestamp、nonce三个参数进行字典序排序 Arrays.sort(arr); StringBuilder content = new StringBuilder(); for (int i = 0; i < arr.length; i++) { content.append(arr[i]); } MessageDigest md = null; String tmpStr = null; try { md = MessageDigest.getInstance("SHA-1"); // 将三个参数字符串拼接成一个字符串进行sha1加密 byte[] digest = md.digest(content.toString().getBytes()); tmpStr = byteToStr(digest); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } content = null; // 将sha1加密后的字符串可与signature对比，标识该请求来源于微信 return tmpStr != null ? tmpStr.equals(signature.toUpperCase()) : false; } /** * 将字节数组转换为十六进制字符串 * * @param byteArray * @return */ private 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 mByte * @return */ private static String byteToHexStr(byte mByte) { 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[(mByte >>> 4) & 0X0F]; tempArr[1] = Digit[mByte & 0X0F]; String s = new String(tempArr); return s; } }
pojo转换为xml
/*** 基于JAXB的XML生成器: 用于pojo与xml文件的相互转换* @author wuwz* @ClassName XmlBuilder* @DateTime 3月29日 上午10:50:17*/public abstract class XmlBuilder {private final static Logger log= Logger.getLogger(XmlBuilder.class);/*** 将pojo转换为XML字符串* @param object* @return*/public static String convertToXml(Object object) {Writer sw = new StringWriter(); try { // 利用jdk中自带的转换类实现 JAXBContext context = JAXBContext.newInstance(object.getClass());Marshaller marshaller = context.createMarshaller(); // 格式化xml输出的格式 marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE); // 将对象转换成输出流形式的xml marshaller.marshal(object, sw); log.debug("XML字符串生成成功！");} catch (JAXBException e) { e.printStackTrace(); } finally {if(sw != null) {try {sw.close();} catch (IOException e) {e.printStackTrace();}}}return sw.toString().replace("standalone=\"yes\"", ""); }/*** 将pojo转换为XML文件* @param obj* @param savePath*/public static File convertToXmlFile(Object obj,String savePath) {File file = null;String xmlStr = convertToXml(obj);if(xmlStr != null && !"".equals(xmlStr)) {file = new File(savePath);if(!file.exists() && file.isFile()) {try {file.createNewFile();} catch (IOException e) {e.printStackTrace();}}if(file.isDirectory()) {System.out.println(MessageFormat.format("{0}不是有效的文件路径.", savePath));return null;}Writer writer = null;try {writer = new FileWriter(file);writer.write(xmlStr);writer.flush();log.debug("XML文件生成成功！");} catch (IOException e) {e.printStackTrace();} finally {if(writer != null) {try {writer.close();} catch (IOException e) {e.printStackTrace();}}}}return file;}/*** 将XML文件转换为指定类型的pojo* @param clazz* @param xmlPath* @return*/public static Object xmlFileToObject(Class<?> clazz, String xmlPath) {Object xmlObject = null;Reader fr = null;try {JAXBContext context = JAXBContext.newInstance(clazz);Unmarshaller unmarshaller = context.createUnmarshaller();fr = new FileReader(xmlPath);xmlObject = unmarshaller.unmarshal(fr);} catch (JAXBException e) {e.printStackTrace();} catch (FileNotFoundException e) {e.printStackTrace();} finally {if (null != fr) {try {fr.close();} catch (IOException e) {e.printStackTrace();}}}return xmlObject;}/*** 将XML字符串转换为指定类型的pojo* * @param clazz* @param xmlStr* @return*/public static Object xmlStrToObject(Class<?> clazz, String xmlStr) {Object xmlObject = null;Reader reader = null;try {JAXBContext context = JAXBContext.newInstance(clazz);// 进行将Xml转成对象的核心接口Unmarshaller unmarshaller = context.createUnmarshaller();reader = new StringReader(xmlStr);xmlObject = unmarshaller.unmarshal(reader);} catch (JAXBException e) {e.printStackTrace();} finally {if (null != reader) {try {reader.close();} catch (IOException e) {e.printStackTrace();}}}return xmlObject;}}
以上的内容模拟的是消息接口的接收与回复，详情请查看微信的开发文档
https://mp./wiki?t=resource/res_main&id=mp1421140453
