Java代码实现向企业微信用户发送消息
公司内部交流使用的企业微信，最近项目中要实现向员工发送企业微信通知，于是看了下企业微信的api，简单实现了下：
1. 其实就是一个HTTP请求，如下
请求方式：POST（HTTPS）
请求地址： https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=ACCESS_TOKEN
文本消息请求参数实例如下
-
{ "touser" : "UserID1|UserID2|UserID3",//用户的ID， "toparty" : "PartyID1|PartyID2",//部门id "totag" : "TagID1 | TagID2",//标签id "msgtype" : "text",//消息类型 "agentid" : 1,//应用的ID，比如时公告还是通知什么一类的，可参考企业微信开发者文档 "text" : { //类型和内容 "content" : "你的快递已到，请携带工卡前往邮件中心领取。\n出发前可查看邮件中心视频实况，聪明避开排队。" }, "safe":0//是否保密信息 } //其中 touser、toparty、totag不能同时为空
其他如图片类型，语音则可以参考开发者文档中的类型对应设置：企业微信-开发者文档
pom依赖
com.google.code.gson
gson
2.8.2
org.apache.httpcomponents
httpclient
4.5.2
org.apache.httpcomponents
httpcore
4.4.5
2. 获取access_token
用到的UrlData类和WeChatData
import org.springframework.stereotype.Component;
@Component
public class UrlData {
String corpId;
String corpSecret;
String getTokenUrl;
String sendMessageUrl;
public String getCorpId() {
return corpId;
}
public void setCorpId(String corpId) {
this.corpId = corpId;
}
public String getCorpSecret() {
return corpSecret;
}
public void setCorpSecret(String corpSecret) {
this.corpSecret = corpSecret;
}
public void setGetTokenUrl(String corpid, String corpsecret) {
this.getTokenUrl = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=" + corpid + "&corpsecret=" + corpsecret;
}
public String getGetTokenUrl() {
return getTokenUrl;
}
public String getSendMessageUrl() {
sendMessageUrl = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=";
return sendMessageUrl;
}
}
package com.lls.it.ldapapi.entity;
import org.springframework.stereotype.Component;
@Component
public class WeChatData {
String touser;
String msgtype;
int agentid;
Object text;
public Object getText() {
return text;
}
public void setText(Object text) {
this.text = text;
}
public String getMsgtype() {
return msgtype;
}
public void setMsgtype(String msgtype) {
this.msgtype = msgtype;
}
public int getAgentid() {
return agentid;
}
public void setAgentid(int agentid) {
this.agentid = agentid;
}
public String getTouser() {
return touser;
}
public void setTouser(String touser) {
this.touser = touser;
}
}请求方式：GET（HTTPS）
请求URL：https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=ID&corpsecret=SECRECT
注：此处标注大写的单词ID和SECRET，为需要替换的变量，根据实际获取值更新。
public String getToken(String corpId, String corpSecret) throws IOException {
SendMsgService sw = new SendMsgService();
UrlData uData = new UrlData();
uData.setGetTokenUrl(corpId, corpSecret);
String resp = sw.toAuth(uData.getGetTokenUrl());//就是按照GET方式拼接了字符串得到url
Map map = gson.fromJson(resp,
new TypeToken>() {
}.getType());
System.out.println(map);
return map.get("access_token").toString();
}
protected String toAuth(String Get_Token_Url) throws IOException {
httpClient = HttpClients.createDefault();
httpGet = new HttpGet(Get_Token_Url);
CloseableHttpResponse response = httpClient.execute(httpGet);
System.out.println(response.toString());
String resp;
try {
HttpEntity entity = response.getEntity();
System.out.println(response.getAllHeaders());
resp = EntityUtils.toString(entity, "utf-8");
EntityUtils.consume(entity);
} finally {
response.close();
}
return resp;
} 3. POST请求，根据上一步得到的token，发送post请求
应用支持推送文本、图片、视频、文件、图文等类型。
请求方式：POST（HTTPS）
请求地址： https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=ACCESS_TOKEN
参数说明：
| 参数 | 是否必须 | 说明 |
|---|---|---|
| access_token | 是 | 调用接口凭证 |
请求body就是文章开头的json数据（text类型）
代码如下：
/**
* 创建POST BODY
*/
private String createPostData(String touser, String msgtype, int agent_id, String contentKey, String contentValue) {
WeChatData weChatData = new WeChatData();
weChatData.setTouser(touser);
weChatData.setAgentid(agent_id);
weChatData.setMsgtype(msgtype);
Map content = new HashMap();
content.put(contentKey, contentValue + "\n--------\n" + df.format(new Date()));
weChatData.setText(content);
System.out.println(gson.toJson(weChatData));
return gson.toJson(weChatData);
}
/**
* POST请求
*/
private String post(String charset, String contentType, String url, String data, String token) throws IOException {
CloseableHttpClient httpclient = HttpClients.createDefault();
httpPost = new HttpPost(url + token);
httpPost.setHeader(CONTENT_TYPE, contentType);
httpPost.setEntity(new StringEntity(data, charset));
CloseableHttpResponse response = httpclient.execute(httpPost);
String resp;
try {
HttpEntity entity = response.getEntity();
resp = EntityUtils.toString(entity, charset);
EntityUtils.consume(entity);
} finally {
response.close();
}
return resp;
} 4. 调用方法请求发送
private CloseableHttpClient httpClient;
private HttpPost httpPost;//用于提交登陆数据
private HttpGet httpGet;//用于获得登录后的页面
public static final String CONTENT_TYPE = "Content-Type";
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//
private static Gson gson = new Gson();
public void sendTextMesg(String toUser, String contentValue) throws IOException {
String token = getToken("Your_corpId", "Your_corpSecret");
String postData = createPostData(toUser, "text", 1000002, "content", contentValue);
String response = post("utf-8", SendMsgService.CONTENT_TYPE, (new UrlData()).getSendMessageUrl(), postData, token);
System.out.println("获取到的token======>" + token);
System.out.println("请求数据======>" + postData);
System.out.println("发送微信的响应数据======>" + response);
}其实企业微信开发者文档就是给我们提供了接口，我们要做的只是封装好我们的请求json，请求对应的接口就可以了。