本文实例为大家分享了Java微信分享接口开发的具体代码，供大家参考，具体内容如下

Java微信分享，步骤是

1、根据当前的url，获取signature，nonceStr，timestamp 和appId。
2、通过signature，nonceStr，timestamp 和appId来配置微信 wx.config。
3、通过wx.ready实现微信分享功能。

1、html端

引入微信JS-SDK.

<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>//分享核心js代码$(document).ready(function () { //通过ajax，在页面加载的时候获取微信分享接口signature，nonceStr，timestamp 和appId $.ajax({ type: "post", url: "/weixin/share", dataType: "json", data:"url="+window.location.href, success: function (data) { wx.config({ debug: false, appId: data.appId, timestamp: data.timestamp, nonceStr: data.nonceStr, signature: data.signature, jsApiList: ['onMenuShareAppMessage', 'onMenuShareTimeline', 'hideAllNonBaseMenuItem', 'showMenuItems'] // 功能列表，我们要使用JS-SDK的什么功能 }); wx.ready(function () { // 获取“分享给朋友”按钮点击状态及自定义分享内容接口 wx.onMenuShareAppMessage({ title: "分享自定义标题", // 分享标题 desc: "分享自定义描述", // 分享描述 link: "http://localhost/weixin/share?openId=1",//分享点击之后的链接 imgUrl:'/images/photo/1.jpg', // 分享图标 type: 'link', // 分享类型,music、video或link，不填默认为link success: function () { //成功之后的回调 } }); wx.hideAllNonBaseMenuItem(); wx.showMenuItems({ menuList: ['menuItem:share:appMessage', 'menuItem:share:timeline'] // 要隐藏的菜单项，只能隐藏“传播类”和“保护类”按钮，所有menu项见附录3 }); wx.onMenuShareTimeline({ title: "分享自定义标题", // 分享标题 desc: "分享自定义描述", // 分享描述 link: "http://localhost/weixin/share?openId=1",//分享点击之后的链接 imgUrl:'/images/photo/1.jpg', // 分享图标 type: 'link', // 分享类型,music、video或link，不填默认为link success: function () { //成功之后的回调 } cancel: function () { // 用户取消分享后执行的回调函数 } }); }); wx.error(function (res) { //打印错误消息。及把 debug:false,设置为debug:ture就可以直接在网页上看到弹出的错误提示 }); } })});

2、Java代码，获取 signature，nonceStr，timestamp 和appId

@RequestMapping(value = "/share", method = RequestMethod.POST) @ResponseBody public Map<String, Object> share(HttpServletRequest request) { String urlTemp = "http://" + request.getServerName() + request.getContextPath(); String urlpath = "http://" + request.getServerName(); String appUrl = request.getParameter("url"); if (request.getParameter("code") != null) { appUrl += "&code=" + request.getParameter("code"); } if (request.getParameter("state") != null) { appUrl += "&state=" + request.getParameter("state"); } return WxConfigUtil.getSignature(appUrl, ContentValues.APPID, ContentValues.SECRET, urlTemp, urlpath); }

工具类我就把整个贴上来了，其中有些方法是没有用到的。

getSignature（）整个方法是微信分享中的核心方法，用来获取signature，nonceStr，timestamp 和appId这几个核心参数。

package com.blog.common.util;import com.alibaba.fastjson.JSONObject;import com.blog.common.model.Token;import javax.net.ssl.HttpsURLConnection;import javax.net.ssl.SSLContext;import javax.net.ssl.SSLSocketFactory;import javax.net.ssl.TrustManager;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.ConnectException;import java.net.URL;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.util.Arrays;import java.util.HashMap;import java.util.Map;/** * 公众平台通用接口工具类 * * @author james * @date 2015-02-27 */public class WxConfigUtil { // 获取access_token的接口地址（GET） 限2000（次/天） public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET"; // 获取jsapi_ticket的接口地址（GET） 限2000（次/天） public final static String jsapi_ticket_url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi"; // 缓存添加的时间 public static String cacheAddTime = null; // token,ticket缓存 public static Map<String, Token> TOKEN_TICKET_CACHE = new HashMap<String, Token>(); // token对应的key private static final String TOKEN = "token"; // ticket对应的key private static final String TICKET = "ticket"; /** * 外部获取签名入口类 * * @param appUrl 应用的url * @return */ public static Map<String, Object> getSignature(String appUrl, String appId, String secret, String url, String urlpath) { // 生成签名的随机串 String noncestr = RandomUtil.getStringRandom(4); if (appUrl == null || "".equals(appUrl)) { return null; } String signature = null; Token accessTocken = getToken(appId, secret, System.currentTimeMillis() / 1000); Token accessTicket = getTicket(accessTocken.getToken(), System.currentTimeMillis() / 1000); signature = signature(accessTicket.getTicket(), cacheAddTime, noncestr, appUrl); System.out.println("-=-=-=-=-=-=-=-=appUrl:" + appUrl); System.out.println("-=-=-=-=-=-=-=-=token:" + accessTocken.getToken()); System.out.println("-=-=-=-=-=-=-=-=ticket:" + accessTicket.getTicket()); System.out.println("-=-=-=-=-=-=-=-=signature:" + signature); System.out.println("-=-=-=-=-=-=-=-=timestamp:" + cacheAddTime); Map<String, Object> map = new HashMap<>(); map.put("appId", appId); map.put("timestamp", cacheAddTime); map.put("nonceStr", noncestr); map.put("appUrl", appUrl); map.put("signature", signature); map.put("url", url); map.put("urlpath", urlpath); return map; } /** * 获得Token * * @return */ public static String getToken(String appId, String secret) { Token accessTocken = getToken(appId, secret, System.currentTimeMillis() / 1000); return accessTocken.getToken(); } /** * 签名 * * @param timestamp * @return */ private static String signature(String jsapi_ticket, String timestamp, String noncestr, String url) { jsapi_ticket = "jsapi_ticket=" + jsapi_ticket; timestamp = "timestamp=" + timestamp; noncestr = "noncestr=" + noncestr; url = "url=" + url; String[] arr = new String[]{jsapi_ticket, noncestr, timestamp, url}; // 将token、timestamp、nonce,url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]); if (i != arr.length - 1) { content.append("&"); } } 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; return tmpStr; } /** * 获取access_token * * @param appid 凭证 * @param appsecret 密钥 * @return */ public static Token getToken(String appid, String appsecret, long currentTime) { Token tockenTicketCache = getTokenTicket(TOKEN); Token Token = null; if (tockenTicketCache != null && (currentTime - tockenTicketCache.getAddTime() <= tockenTicketCache.getExpiresIn())) {// 缓存存在并且没过期 System.out.println("==========缓存中token已获取时长为：" + (currentTime - tockenTicketCache.getAddTime()) + "毫秒，可以重新使用"); return tockenTicketCache; } System.out.println("==========缓存中token不存在或已过期==============="); String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret); JSONObject jsonObject = httpRequest(requestUrl, "GET", null); // 如果请求成功 if (null != jsonObject) { Token = new Token(); Token.setToken(jsonObject.getString("access_token")); Token.setExpiresIn(jsonObject.getIntValue("expires_in") / 2);// 正常过期时间是7200秒，此处设置3600秒读取一次 System.out.println("==========tocket缓存过期时间为:" + Token.getExpiresIn() + "毫秒"); Token.setAddTime(currentTime); updateToken(TOKEN, Token); } return Token; } /** * 获取ticket * * @param token * @return */ private static Token getTicket(String token, long currentTime) { Token tockenTicketCache = getTokenTicket(TICKET); Token Token = null; if (tockenTicketCache != null && (currentTime - tockenTicketCache.getAddTime() <= tockenTicketCache.getExpiresIn())) {// 缓存中有ticket System.out.println("==========缓存中ticket已获取时长为：" + (currentTime - tockenTicketCache.getAddTime()) + "毫秒，可以重新使用"); return tockenTicketCache; } System.out.println("==========缓存中ticket不存在或已过期==============="); String requestUrl = jsapi_ticket_url.replace("ACCESS_TOKEN", token); JSONObject jsonObject = httpRequest(requestUrl, "GET", null); // 如果请求成功 if (null != jsonObject) { Token = new Token(); Token.setTicket(jsonObject.getString("ticket")); Token.setExpiresIn(jsonObject.getIntValue("expires_in") / 2);// 正常过期时间是7200秒，此处设置3600秒读取一次 System.out.println("==========ticket缓存过期时间为:" + Token.getExpiresIn() + "毫秒"); Token.setAddTime(currentTime); updateToken(TICKET, Token); } return Token; } /** * 发起https请求并获取结果 * * @param requestUrl 请求地址 * @param requestMethod 请求方式（GET、POST） * @param outputStr 提交的数据 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) */ private static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) { JSONObject jsonObject = null; StringBuffer buffer = new StringBuffer(); try { // 创建SSLContext对象，并使用我们指定的信任管理器初始化 TrustManager[] tm = {new MyX509TrustManager()}; SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE"); sslContext.init(null, tm, new java.security.SecureRandom()); // 从上述SSLContext对象中得到SSLSocketFactory对象 SSLSocketFactory ssf = sslContext.getSocketFactory(); URL url = new URL(requestUrl); HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection(); httpUrlConn.setSSLSocketFactory(ssf); httpUrlConn.setDoOutput(true); httpUrlConn.setDoInput(true); httpUrlConn.setUseCaches(false); // 设置请求方式（GET/POST） httpUrlConn.setRequestMethod(requestMethod); if ("GET".equalsIgnoreCase(requestMethod)) httpUrlConn.connect(); // 当有数据需要提交时 if (null != outputStr) { OutputStream outputStream = httpUrlConn.getOutputStream(); // 注意编码格式，防止中文乱码 outputStream.write(outputStr.getBytes("UTF-8")); outputStream.close(); } // 将返回的输入流转换成字符串 InputStream inputStream = httpUrlConn.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8"); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String str = null; while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); // 释放资源 inputStream.close(); inputStream = null; httpUrlConn.disconnect(); jsonObject = JSONObject.parseObject(buffer.toString()); // jsonObject = JSONObject.fromObject(buffer.toString()); } catch (ConnectException ce) { System.out.println("Weixin server connection timed out."); } catch (Exception e) { System.out.println("https request error:{}" + e.getMessage()); } return jsonObject; } /** * 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; } /** * 从缓存中读取token或者ticket * * @return */ private static Token getTokenTicket(String key) { if (TOKEN_TICKET_CACHE != null && TOKEN_TICKET_CACHE.get(key) != null) { System.out.println("==========从缓存中获取到了" + key + "成功==============="); return TOKEN_TICKET_CACHE.get(key); } return null; } /** * 更新缓存中token或者ticket * * @return */ private static void updateToken(String key, Token accessTocken) { if (TOKEN_TICKET_CACHE != null && TOKEN_TICKET_CACHE.get(key) != null) { TOKEN_TICKET_CACHE.remove(key); System.out.println("==========从缓存中删除" + key + "成功==============="); } TOKEN_TICKET_CACHE.put(key, accessTocken); cacheAddTime = String.valueOf(accessTocken.getAddTime());// 更新缓存修改的时间 System.out.println("==========更新缓存中" + key + "成功==============="); }}

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