Java：企业微信开发——上传临时素材

请求方式：POST（HTTPS）
请求地址：https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE

素材上传得到media_id，该media_id仅三天内有效
media_id在同一企业内应用之间可以共享

这个media_id在推送图表、文件、语言等消息时需要用到的

type：分别有图片（image）、语音（voice）、视频（video），普通文件（file）

接口：
tokenMap和getAccessToken()不清楚的可以看下上上篇文章
获取企业微信Token

//path：本地图片地址   fileType：image  voice....
public String uploadFile(String path, String fileType){
        RestTemplate restTemplate = new RestTemplate(new HttpsClientRequestFactory());
        if(tokenMap.get(TOKENKEY) == null){
            getAccessToken();
        }
        File file = new File(path);
        String url = file_upload_url.replace("{accessToken}",tokenMap.get(TOKENKEY).getAccessToken()).replace("{type}",fileType);
        HttpHeaders headers = new HttpHeaders();
        MediaType type = MediaType.parseMediaType("multipart/form-data");
        headers.setContentType(type);
        headers.setContentLength(file.length());
        headers.setContentDispositionFormData("media",file.getName());
        MultiValueMap param = new LinkedMultiValueMap<>();
        FileSystemResource resource = new FileSystemResource(file.getPath());
        param.add("file",resource);
        HttpEntity> formEntity = new HttpEntity<>(param, headers);
        ResponseEntity data = restTemplate.postForEntity(url,formEntity,String.class);
        JSONObject jsonObject = JSONObject.parseObject(data.getBody());
        return jsonObject.getString("media_id");
    }

HttpsClientRequestFactory这个类是为了解决https访问认证用的

package com.qingqing.cboard.config;

import org.springframework.http.client.SimpleClientHttpRequestFactory;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.Socket;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

/**
 * @author XuJD
 * @create 2020-03-04 10:37
 **/
public class HttpsClientRequestFactory extends SimpleClientHttpRequestFactory {

    @Override
    protected void prepareConnection(HttpURLConnection connection, String httpMethod) {
        try {
            if (!(connection instanceof HttpsURLConnection)) {
                throw new RuntimeException("An instance of HttpsURLConnection is expected");
            }

            HttpsURLConnection httpsConnection = (HttpsURLConnection) connection;

            TrustManager[] trustAllCerts = new TrustManager[]{
                    new X509TrustManager() {
                        @Override
                        public void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {

                        }
                        @Override
                        public void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws
                                CertificateException {
                        }

                        @Override
                        public X509Certificate[] getAcceptedIssuers() {
                            return null;
                        }
                    }
            };
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
            httpsConnection.setSSLSocketFactory(new MyCustomSSLSocketFactory(sslContext.getSocketFactory()));

            httpsConnection.setHostnameVerifier(new HostnameVerifier() {
                @Override
                public boolean verify(String s, SSLSession sslSession) {
                    return true;
                }
            });

            super.prepareConnection(httpsConnection, httpMethod);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * We need to invoke sslSocket.setEnabledProtocols(new String[] {"SSLv3"});
     * see http://www.oracle.com/technetwork/java/javase/documentation/cve-2014-3566-2342133.html (Java 8 section)
     */
    // SSLSocketFactory用于创建 SSLSockets
    private static class MyCustomSSLSocketFactory extends SSLSocketFactory {

        private final SSLSocketFactory delegate;

        public MyCustomSSLSocketFactory(SSLSocketFactory delegate) {
            this.delegate = delegate;
        }

        // 返回默认启用的密码套件。除非一个列表启用，对SSL连接的握手会使用这些密码套件。
        // 这些默认的服务的最低质量要求保密保护和服务器身份验证
        @Override
        public String[] getDefaultCipherSuites() {
            return delegate.getDefaultCipherSuites();
        }

        // 返回的密码套件可用于SSL连接启用的名字
        @Override
        public String[] getSupportedCipherSuites() {
            return delegate.getSupportedCipherSuites();
        }


        @Override
        public Socket createSocket(final Socket socket, final String host, final int port,
                                   final boolean autoClose) throws IOException {
            final Socket underlyingSocket = delegate.createSocket(socket, host, port, autoClose);
            return overrideProtocol(underlyingSocket);
        }


        @Override
        public Socket createSocket(final String host, final int port) throws IOException {
            final Socket underlyingSocket = delegate.createSocket(host, port);
            return overrideProtocol(underlyingSocket);
        }

        @Override
        public Socket createSocket(final String host, final int port, final InetAddress localAddress,
                                   final int localPort) throws
                IOException {
            final Socket underlyingSocket = delegate.createSocket(host, port, localAddress, localPort);
            return overrideProtocol(underlyingSocket);
        }

        @Override
        public Socket createSocket(final InetAddress host, final int port) throws IOException {
            final Socket underlyingSocket = delegate.createSocket(host, port);
            return overrideProtocol(underlyingSocket);
        }

        @Override
        public Socket createSocket(final InetAddress host, final int port, final InetAddress localAddress,
                                   final int localPort) throws
                IOException {
            final Socket underlyingSocket = delegate.createSocket(host, port, localAddress, localPort);
            return overrideProtocol(underlyingSocket);
        }

        private Socket overrideProtocol(final Socket socket) {
            if (!(socket instanceof SSLSocket)) {
                throw new RuntimeException("An instance of SSLSocket is expected");
            }
            ((SSLSocket) socket).setEnabledProtocols(new String[]{"TLSv1"});
            return socket;
        }
    }


}