本文主要向大家介绍了JAVA语言微信分享接口开发，通过具体的内容向大家展示，希望对大家学习JAVA语言有所帮助。

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.

//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: "https://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: "https://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 share(HttpServletRequest request) {

String urlTemp = "https://" + request.getServerName() + request.getContextPath();

String urlpath = "https://" + 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 TOKEN_TICKET_CACHE = new HashMap();

// 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 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 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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