先注册一个微信公众号;或者申请接口测试号来进行开发；
接口测试号申请链接：
https://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=sandbox/login
这里先介绍测试号的开发；
点击链接进入页面，会看到y一个二维码，用微信扫描后就会分配给你一个微信公众测试账号；
然后找到如下这个位置，点击“新增测试模板”按钮，填写
下面是相关代码;
@Test
public void sendTemplate(){
postTemplateMsg("appid","appSecret", "openId");//这里替换成你自己的信息
}
public String sendTemplateMessage(String openId){
TemplateMsg tm=new TemplateMsg();
tm.setTouser(openId);
tm.setTemplate_id("模板Id");
tm.setUrl("https://wwww.baidu.com");
//about data start
Map<String,Object> m = new HashMap<String,Object>();
TemplateData first = new TemplateData();
first.setColor("#000000");
first.setValue("您好，您有一个流程待办需要处理:");
m.put("first", first);
TemplateData keyword1 = new TemplateData();
keyword1.setColor("#000000");
keyword1.setValue("11111111111111");
m.put("keyword1", keyword1);
TemplateData keyword2 = new TemplateData();
keyword2.setColor("#000000");
keyword2.setValue("爱你一万年");
m.put("keyword2", keyword2);
TemplateData keyword3 = new TemplateData();
keyword3.setColor("#000000");
keyword3.setValue("2018.04.27 09:51:30");
m.put("keyword3", keyword3);
TemplateData keyword4 = new TemplateData();
keyword4.setColor("#000000");
keyword4.setValue("不够");
m.put("keyword4", keyword4);
TemplateData remark = new TemplateData();
remark.setColor("#000000");
remark.setValue("再加一万年");
m.put("remark", remark);
//about data end
tm.setData(m);
String jsonString = JSONObject.fromObject(tm).toString();
System.out.println("jsonString:"+jsonString);
return jsonString;
}
/**
* 发送模板消息
* appId 公众账号的唯一标识
* appSecret 公众账号的密钥
* openId 用户标识
*/
public void postTemplateMsg(String appId, String appSecret, String openId){
Token token = CommonUtil.getToken(appId, appSecret);
String access_token = token.getAccessToken();
String requestUrl = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token="+access_token;
System.out.println("requestUrl:"+requestUrl);
String jsonString = sendTemplateMessage(openId);
JSONObject jsonObject = CommonUtil.httpsRequest(requestUrl, "POST", jsonString);
System.out.println("jsonObject="+jsonObject);
if (null != jsonObject) {
int errorCode = jsonObject.getInt("errcode");
if (0 == errorCode) {
System.out.println("模板消息发送成功！");
} else {
String errorMsg = jsonObject.getString("errmsg");
System.out.println("模板消息发送失败,错误码是:"+errorCode+",错误信息是:"+errorMsg);
}
}
}
/**
* 类名: CommonUtil </br>
* 描述: 通用工具类 </br>
* 发布版本：V1.0 </br>
*/
public class CommonUtil {
// 凭证获取（GET）
public final static String token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
/**
* 发送https请求
*
* @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)
*/
public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {
JSONObject jsonObject = null;
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 conn = (HttpsURLConnection) url.openConnection();
conn.setSSLSocketFactory(ssf);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
// 设置请求方式（GET/POST）
conn.setRequestMethod(requestMethod);
// 当outputStr不为null时向输出流写数据
if (null != outputStr) {
OutputStream outputStream = conn.getOutputStream();
// 注意编码格式
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 从输入流读取返回内容
InputStream inputStream = conn.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);
}
// 释放资源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();
jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
System.out.println("连接超时："+ ce);
} catch (Exception e) {
System.out.println("https请求异常："+ e);
}
return jsonObject;
}
/**
* 获取接口访问凭证
*
* @param appid 凭证
* @param appsecret 密钥
* @return
*/
public static Token getToken(String appid, String appsecret) {
Token token = null;
String requestUrl = token_url.replace("APPID", appid).replace("APPSECRET", appsecret);
System.out.println("requestUrl:"+requestUrl);
// 发起GET请求获取凭证
JSONObject jsonObject = httpsRequest(requestUrl, "GET", null);
if (null != jsonObject) {
try {
token = new Token();
token.setAccessToken(jsonObject.getString("access_token"));
token.setExpiresIn(jsonObject.getInt("expires_in"));
} catch (JSONException e) {
token = null;
// 获取token失败
System.out.println("获取token失败 errcode:"+jsonObject.getInt("errcode")+"errmsg:"+jsonObject.getString("errmsg"));
}
}
return token;
}
/**
* URL编码（utf-8）
* @param source
* @return
*/
public static String urlEncodeUTF8(String source) {
String result = source;
try {
result = java.net.URLEncoder.encode(source, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return result;
}
public static void main(String args[]) {
//https://1d488f5d.ngrok.io/WeiXinProject/
String source="https://565b4dad.ngrok.io/WeChatPublicNumber/oauthServlet";
System.out.println(CommonUtil.urlEncodeUTF8(source));
}
}
over!