JAVA微信公众号网页开发——将文章群发到微信公众号中（文章使用富文本，包含图片）
<p> </p><pre>SendTextToAllUserAct.java</pre>
<div class="cnblogs_Highlighter">
<pre class="brush:java;gutter:true;">package com.weixin.sendmessage;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.net.URI;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 控制器
*/
public class SendTextToAllUserAct {
/**
* 群发文章微信
*
* @param ids 内容id
* @return
*/
@RequestMapping("/content/o_sendToWeixin.do")
public String sendToWeixin(Integer[] ids) {
Content[] beans = new Content;
for (int i = 0; i < ids.length; i++) {
beans = contentMng.findById(ids); //查询所有要发送的内容
}
sendTextToAllUser(beans);
return null;
}
/**
* 群发
*/
public void sendTextToAllUser(Content[] beans) {
String access_token = getToken();
//上传内容到微信
/**
* 上传图文消息素材
* 官方接口文档：https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Batch_Sends_and_Originality_Checks.html#%E4%B8%8A%E4%BC%A0%E5%9B%BE%E6%96%87%E6%B6%88%E6%81%AF%E7%B4%A0%E6%9D%90%E3%80%90%E8%AE%A2%E9%98%85%E5%8F%B7%E4%B8%8E%E6%9C%8D%E5%8A%A1%E5%8F%B7%E8%AE%A4%E8%AF%81%E5%90%8E%E5%9D%87%E5%8F%AF%E7%94%A8%E3%80%91
*/
String articalUploadUrl = "https://api.weixin.qq.com/cgi-bin/media/uploadnews";
String url = articalUploadUrl + "?access_token=" + access_token;
String[] str = articalUpload(access_token, beans);
Integer contentCount = 0;
contentCount = Integer.parseInt(str);
if (contentCount > 0) {
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
//HttpClient
CloseableHttpClient client = httpClientBuilder.build();
client = (CloseableHttpClient) wrapClient(client);
HttpPost post = new HttpPost(url);
try {
System.out.println("str:" + str);
StringEntity s = new StringEntity(str, "utf-8");
s.setContentType("application/json");
post.setEntity(s);
HttpResponse res = client.execute(post);
HttpEntity entity = res.getEntity();
String contentString = EntityUtils.toString(entity, "utf-8");
System.out.println("contentString:" + contentString);
JSONObject json = new JSONObject(contentString);
//输出返回消息
String media_id = "";
media_id = json.getString("media_id");
if (StringUtils.isNotBlank(media_id)) {
/**
*图文消息群发
* 官方接口文档：https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Batch_Sends_and_Originality_Checks.html
*/
String sendAllMessageUrl = "https://api.weixin.qq.com/cgi-bin/message/mass/sendall";
String url_send = sendAllMessageUrl + "?access_token=" + token;
String str_send = "{\"filter\":{\"is_to_all\":true},\"mpnews\":{\"media_id\":\"" + media_id + "\"},\"msgtype\":\"mpnews\"}";
post(url_send, str_send, "application/json");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
private String post(String url, String json, String contentType) {
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
//HttpClient
CloseableHttpClient client = httpClientBuilder.build();
client = (CloseableHttpClient) wrapClient(client);
HttpPost post = new HttpPost(url);
try {
StringEntity s = new StringEntity(json, "utf-8");
if (StringUtils.isBlank(contentType)) {
s.setContentType("application/json");
}
s.setContentType(contentType);
post.setEntity(s);
HttpResponse res = client.execute(post);
HttpEntity entity = res.getEntity();
String str = EntityUtils.toString(entity, "utf-8");
return str;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* @param token
* @param beans
* @return
*/
private String[] articalUpload(String token, Content[] beans) {
Integer count = 0;
String str = "{\"articles\":[";
for (int i = 0; i < beans.length; i++) {
//将富文本图片先上传到微信服务器上
String txt = contentHtmlProc(token, beans.getHtml());
String mediaId = "";
if (!StringUtils.isBlank("文章类型图")) {
String typeImg = "文章类型图";
mediaId = uploadFile(token, typeImg, "image");
System.out.println("typeImg:" + typeImg);
str = str + "{" +
"\"thumb_media_id\":\"" + mediaId + "\"," +
"\"author\":\"" + beans.getAuthor() + "\"," +
"\"title\":\"" + beans.getTitle() + "\"," +
"\"content_source_url\":\"" + beans.getSourceUrl() + "\"," +
"\"content\":\"" + txt + "\"," +
"\"digest\":\"" + beans.getDescription() + "\","
+ "\"show_cover_pic\":\"0\"" + "}";
if (i != beans.length - 1) {
str = str + ",";
}
count++;
}
}
str = str + "]}";
String[] result = new String;
result = str;
result = count.toString();
return result;
}
/**
* 把内容中的图片先上传到微信服务器
*
* @param access_token 微信的access_token
* @param txt 富文本内容 html代码
* @return
*/
private String contentHtmlProc(String access_token, String txt) {
if (StringUtils.isBlank(txt)) {
return "";
}
//从富文本的html中提取img图片路径
List<String> imgUrls = getImageSrc(txt);
for (String img : imgUrls) {
//img路径为图片的绝对路径
//上传图片到微信
String imgRealUrl = uploadImg(access_token, img);
if (StringUtils.isNotBlank(imgRealUrl)) {
txt = txt.replace(img, imgRealUrl);
}
}
//html标签双引号需要注意
txt = txt.replaceAll("\"", "\'");
return txt;
}
/**
* 文件上传到微信服务器
* 官方接口文档：https://developers.weixin.qq.com/doc/offiaccount/Asset_Management/New_temporary_materials.html
*
* @param access_token
* @param filePath 文件路径 ，绝对地址
* @param type 文件类型
* @return
*/
public String uploadFile(String access_token, String filePath, String type) {
String sendGetUrl = "https://api.weixin.qq.com/cgi-bin/media/upload";
String url = sendGetUrl + "?access_token=" + access_token;
String result = null;
String mediaId = "";
FileUpload fileUpload = new FileUpload();
try {
result = fileUpload.uploadFile(url, filePath, type);
System.out.println("result:" + result);
if (result.startsWith("{") && result.contains("media_id")) {
JSONObject json = new JSONObject(result);
mediaId = json.getString("media_id");
}
} catch (Exception e) {
e.printStackTrace();
}
return mediaId;
}
/**
* 把本地图片先上传到服务器 ,上传图文消息内的图片获取URL
* 官网接口地址 ：https://developers.weixin.qq.com/doc/offiaccount/Asset_Management/Adding_Permanent_Assets.html
*
* @param access_token
* @param filePath 图片路径
* @return
*/
private String uploadImg(String access_token, String filePath) {
String sendGetUrl = "https://api.weixin.qq.com/cgi-bin/media/uploadimg";
String url = sendGetUrl + "?access_token=" + access_token;
String result = null;
String mediaId = "";
FileUpload fileUpload = new FileUpload();
try {
result = fileUpload.uploadFile(url, filePath, null);
if (result.startsWith("{")) {
JSONObject json = new JSONObject(result);
mediaId = json.getString("url");
}
} catch (Exception e) {
e.printStackTrace();
}
return mediaId;
}
/**
* 提取img图片路径
*
* @param htmlCode html代码
* @return
*/
public static List<String> getImageSrc(String htmlCode) {
List<String> imageSrcList = new ArrayList<String>();
String regular = "<img(.*?)src=\"(.*?)\"";
String img_pre = "(?i)<img(.*?)src=\"";
String img_sub = "\"";
Pattern p = Pattern.compile(regular, Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(htmlCode);
String src = null;
while (m.find()) {
src = m.group();
src = src.replaceAll(img_pre, "").replaceAll(img_sub, "").trim();
imageSrcList.add(src);
}
return imageSrcList;
}
/**
* 获取access_token
*
* @return
*/
public String getToken() {
String tokenGetUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential";//微信提供获取access_token接口地址
String appid = "";
String secret = "";
System.out.println("~~~~~appid:" + appid);
System.out.println("~~~~~secret:" + secret);
JSONObject tokenJson = new JSONObject();
if (StringUtils.isNotBlank(appid) && StringUtils.isNotBlank(secret)) {
tokenGetUrl += "&appid=" + appid + "&secret=" + secret;
tokenJson = getUrlResponse(tokenGetUrl);
System.out.println("~~~~~tokenJson:" + tokenJson.toString());
try {
return (String) tokenJson.get("access_token");
} catch (JSONException e) {
System.out.println("报错了");
return null;
}
} else {
System.out.println("appid和secret为空");
return null;
}
}
private JSONObject getUrlResponse(String url) {
CharsetHandler handler = new CharsetHandler("UTF-8");
try {
HttpGet httpget = new HttpGet(new URI(url));
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
//HttpClient
CloseableHttpClient client = httpClientBuilder.build();
client = (CloseableHttpClient) wrapClient(client);
return new JSONObject(client.execute(httpget, handler));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
private static HttpClient wrapClient(HttpClient base) {
try {
SSLContext ctx = SSLContext.getInstance("TLSv1");
X509TrustManager tm = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] xcs,
String string) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] xcs,
String string) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
ctx.init(null, new TrustManager[]{tm}, null);
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(ctx, new String[]{"TLSv1"}, null,
SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
return httpclient;
} catch (Exception ex) {
return null;
}
}
private class CharsetHandler implements ResponseHandler<String> {
private String charset;
public CharsetHandler(String charset) {
this.charset = charset;
}
public String handleResponse(HttpResponse response)
throws ClientProtocolException, IOException {
StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() >= 300) {
throw new HttpResponseException(statusLine.getStatusCode(),
statusLine.getReasonPhrase());
}
HttpEntity entity = response.getEntity();
if (entity != null) {
if (!StringUtils.isBlank(charset)) {
return EntityUtils.toString(entity, charset);
} else {
return EntityUtils.toString(entity);
}
} else {
return null;
}
}
}
}
</pre>
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<p> </p>
<pre> </pre>
<p> </p>
<p> </p>
<pre>Content.java</pre>
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<pre class="brush:java;gutter:true;">package com.weixin.sendmessage;
/**
* 内容实体类
*/
public class Content {
private Integer id;
private String author;
private String html;
private String title;
private String description;
private String sourceUrl;
public String getSourceUrl() {
return sourceUrl;
}
public void setSourceUrl(String sourceUrl) {
this.sourceUrl = sourceUrl;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getHtml() {
return html;
}
public void setHtml(String html) {
this.html = html;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
</pre>
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<p> </p>
<pre>FileUpload.java</pre>
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<pre class="brush:java;gutter:true;">package com.weixin.sendmessage;
import org.apache.commons.lang.StringUtils;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
public class FileUpload {
/**
* 模拟form表单的形式 ，上传文件 以输出流的形式把文件写入到url中，然后用输入流来获取url的响应
*
* @param url 请求地址 form表单url地址
* @param filePath 文件在服务器保存路径
* @return String 正确上传返回media_id
* @throws IOException
*/
/** 微信上传文件接口*/
public String uploadFile(String url, String filePath, String type) throws Exception {
File file = new File(filePath);
String result = null;
if (!file.exists() || !file.isFile()) {
return "文件路径错误";
}
/**
* 第一部分
*/
if(StringUtils.isNotBlank(type)){
url = url+"&type="+type;
}
URL urlObj = new URL(url);
HttpURLConnection con = null;
//解决HTTPS
trustAllHttpsCertificates();
HostnameVerifier hv = new HostnameVerifier() {
public boolean verify(String urlHostName, SSLSession session) {
System.out.println("Warning: URL Host: " + urlHostName + " vs. "
+ session.getPeerHost());
return true;
}
};
HttpsURLConnection.setDefaultHostnameVerifier(hv);
con=(HttpURLConnection) urlObj.openConnection();
/**
* 设置关键值
*/
con.setRequestMethod("POST"); // 以Post方式提交表单，默认get方式
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false); // post方式不能使用缓存
// 设置请求头信息
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");
// 设置边界
String BOUNDARY = "----------" + System.currentTimeMillis();
con.setRequestProperty("content-type", "multipart/form-data; boundary=" + BOUNDARY);
//con.setRequestProperty("Content-Type", "multipart/mixed; boundary=" + BOUNDARY);
//con.setRequestProperty("content-type", "text/html");
// 请求正文信息
// 第一部分：
StringBuilder sb = new StringBuilder();
sb.append("--"); // ////////必须多两道线
sb.append(BOUNDARY);
sb.append("\r\n");
sb.append("Content-Disposition: form-data;name=\"file\";filename=\""
+ file.getName() + "\"\r\n");
sb.append("Content-Type:application/octet-stream\r\n\r\n");
byte[] head = sb.toString().getBytes("utf-8");
// 获得输出流
OutputStream out = new DataOutputStream(con.getOutputStream());
out.write(head);
// 文件正文部分
DataInputStream in = new DataInputStream(new FileInputStream(file));
int bytes = 0;
byte[] bufferOut = new byte;
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
in.close();
// 结尾部分
byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线
out.write(foot);
out.flush();
out.close();
/**
* 读取服务器响应，必须读取,否则提交不成功
*/
// con.getResponseCode();
/**
* 下面的方式读取也是可以的
*/
try {
// 定义BufferedReader输入流来读取URL的响应
StringBuffer buffer = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(
con.getInputStream(),"UTF-8"));
String line = null;
while ((line = reader.readLine()) != null) {
//System.out.println(line);
buffer.append(line);
}
if(result==null){
result = buffer.toString();
}
return buffer.toString();
} catch (Exception e) {
System.out.println("发送POST请求出现异常！" + e);
e.printStackTrace();
}
return result;
}
private static void trustAllHttpsCertificates() throws Exception {
javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager;
javax.net.ssl.TrustManager tm = new miTM();
trustAllCerts = tm;
javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext
.getInstance("SSL");
sc.init(null, trustAllCerts, null);
HttpsURLConnection.setDefaultSSLSocketFactory(sc
.getSocketFactory());
}
static class miTM implements javax.net.ssl.TrustManager,
javax.net.ssl.X509TrustManager {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
public boolean isServerTrusted(
java.security.cert.X509Certificate[] certs) {
return true;
}
public boolean isClientTrusted(
java.security.cert.X509Certificate[] certs) {
return true;
}
public void checkServerTrusted(
java.security.cert.X509Certificate[] certs, String authType)
throws java.security.cert.CertificateException {
return;
}
public void checkClientTrusted(
java.security.cert.X509Certificate[] certs, String authType)
throws java.security.cert.CertificateException {
return;
}
}
public static void main(String[] args) throws Exception {
String filePath = "d:/mv1.jpg";
String token="Jdr_B5dQzbWlmmTAlMxbpOZiUfe100laWKeNjRgqfYAJ2GkgCdbQCQO4gAA6e0qd7uYM8fhhzx9ehQBCHlQvKQ";
String result = null;
FileUpload fileUpload = new FileUpload();
result = fileUpload.uploadFile(token, filePath, "image");
System.out.println(result);
}
}
</pre>
</div>
<p> </p>
<p> </p>
</div>
<div id="MySignature" role="contentinfo">
-----------------------有任何问题可以在评论区评论，也可以私信我，我看到的话会进行回复，欢迎大家指教------------------------
（蓝奏云官网如果有地址失效了，可以私信我，后续看到会补充）<br><br>
来源：https://www.cnblogs.com/pxblog/p/11842328.html
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