Java使用HTTPClient4.3开发的公众平台消息模板的推送功能

package com.yuanchuangyun.cyb.manager.busniess.impl;

import java.io.IOException;
import java.net.SocketTimeoutException;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.config.RequestConfig.Builder;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

/**
* 依赖的jar包有：commons-lang-2.6.jar、httpclient-4.3.2.jar、httpcore-4.3.1.jar、commons-io-2.4.jar
* @author Renguoqiang
*
*/
public class WeiXinTemplateMessageService {

public static final int connTimeout=10000;
public static final int readTimeout=10000;
public static final String charset="UTF-8";
private static HttpClient client = null;

static {
PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
cm.setMaxTotal(128);
cm.setDefaultMaxPerRoute(128);
client = HttpClients.custom().setConnectionManager(cm).build();
}

public static String postParameters(String url, String parameterStr) throws ConnectTimeoutException, SocketTimeoutException, Exception{
return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
}

public static String postParameters(String url, String parameterStr,String charset, Integer connTimeout, Integer readTimeout) throws ConnectTimeoutException, SocketTimeoutException, Exception{
return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
}

public static String postParameters(String url, Map<String, String> params) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
return postForm(url, params, null, connTimeout, readTimeout);
}

public static String postParameters(String url, Map<String, String> params, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
return postForm(url, params, null, connTimeout, readTimeout);
}

public static String get(String url) throws Exception {
return get(url, charset, null, null);
}

public static String get(String url, String charset) throws Exception {
return get(url, charset, connTimeout, readTimeout);
}

/**
* 发送一个 Post 请求, 使用指定的字符集编码.
*
* @param url
* @param body RequestBody
* @param mimeType 例如 application/xml "application/x-www-form-urlencoded" a=1&b=2&c=3
* @param charset 编码
* @param connTimeout 建立链接超时时间,毫秒.
* @param readTimeout 响应超时时间,毫秒.
* @return ResponseBody, 使用指定的字符集编码.
* @throws ConnectTimeoutException 建立链接超时异常
* @throws SocketTimeoutException  响应超时
* @throws Exception
*/
public static String post(String url, String body, String mimeType,String charset, Integer connTimeout, Integer readTimeout)
throws ConnectTimeoutException, SocketTimeoutException, Exception {
HttpClient client = null;
HttpPost post = new HttpPost(url);
String result = "";
try {
if (StringUtils.isNotBlank(body)) {
HttpEntity entity = new StringEntity(body, ContentType.create(mimeType, charset));
post.setEntity(entity);
}
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
post.setConfig(customReqConf.build());

HttpResponse res;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();

HttpGet httpGet = new HttpGet("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=xxxxxxxxxxxxxxx&secret=xxxxxxxxxxxxxxxxxxxxxxxxxxxx");
HttpResponse responseGet = client.execute(httpGet);
//System.out.println(responseGet);
String responseText = EntityUtils.toString(responseGet.getEntity(), StandardCharsets.UTF_8);
//System.out.println(responseText);
httpGet.releaseConnection();
String access_token = "";
access_token = responseText.replaceAll("(?s).*access_token\":\"", "").replaceAll("(?s)\",\"expires_in.*", "");
System.out.println("access_token:"+access_token);

post.setURI(new URI(post.getURI()+access_token));

res = client.execute(post);
} else {
// 执行 Http 请求.
client = WeiXinTemplateMessageService.client;
res = client.execute(post);
}
result = IOUtils.toString(res.getEntity().getContent(), charset);
} finally {
post.releaseConnection();
if (url.startsWith("https") && client != null&& client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
return result;
}

/**
* 提交form表单
*
* @param url
* @param params
* @param connTimeout
* @param readTimeout
* @return
* @throws ConnectTimeoutException
* @throws SocketTimeoutException
* @throws Exception
*/
public static String postForm(String url, Map<String, String> params, Map<String, String> headers, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
SocketTimeoutException, Exception {

HttpClient client = null;
HttpPost post = new HttpPost(url);
try {
if (params != null && !params.isEmpty()) {
List<NameValuePair> formParams = new ArrayList<org.apache.http.NameValuePair>();
Set<Entry<String, String>> entrySet = params.entrySet();
for (Entry<String, String> entry : entrySet) {
formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);
post.setEntity(entity);
}

if (headers != null && !headers.isEmpty()) {
for (Entry<String, String> entry : headers.entrySet()) {
post.addHeader(entry.getKey(), entry.getValue());
}
}
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
post.setConfig(customReqConf.build());
HttpResponse res = null;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(post);
} else {
// 执行 Http 请求.
client = WeiXinTemplateMessageService.client;
res = client.execute(post);
}
return IOUtils.toString(res.getEntity().getContent(), "UTF-8");
} finally {
post.releaseConnection();
if (url.startsWith("https") && client != null
&& client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
}

/**
* 发送一个 GET 请求
*
* @param url
* @param charset
* @param connTimeout  建立链接超时时间,毫秒.
* @param readTimeout  响应超时时间,毫秒.
* @return
* @throws ConnectTimeoutException   建立链接超时
* @throws SocketTimeoutException   响应超时
* @throws Exception
*/
public static String get(String url, String charset, Integer connTimeout,Integer readTimeout)
throws ConnectTimeoutException,SocketTimeoutException, Exception {

HttpClient client = null;
HttpGet get = new HttpGet(url);
String result = "";
try {
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
get.setConfig(customReqConf.build());

HttpResponse res = null;

if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(get);
} else {
// 执行 Http 请求.
client = WeiXinTemplateMessageService.client;
res = client.execute(get);
}

result = IOUtils.toString(res.getEntity().getContent(), charset);
} finally {
get.releaseConnection();
if (url.startsWith("https") && client != null && client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
return result;
}

/**
* 从 response 里获取 charset
*
* @param ressponse
* @return
*/
@SuppressWarnings("unused")
private static String getCharsetFromResponse(HttpResponse ressponse) {
// Content-Type:text/html; charset=GBK
if (ressponse.getEntity() != null  && ressponse.getEntity().getContentType() != null && ressponse.getEntity().getContentType().getValue() != null) {
String contentType = ressponse.getEntity().getContentType().getValue();
if (contentType.contains("charset=")) {
return contentType.substring(contentType.indexOf("charset=") + 8);
}
}
return null;
}

/**
* 创建 SSL连接
* @return
* @throws GeneralSecurityException
*/
private static CloseableHttpClient createSSLInsecureClient() throws GeneralSecurityException {
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain,String authType) throws CertificateException {
return true;
}
}).build();

SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}

@Override
public void verify(String host, SSLSocket ssl)
throws IOException {
}

@Override
public void verify(String host, X509Certificate cert)
throws SSLException {
}

@Override
public void verify(String host, String[] cns,
String[] subjectAlts) throws SSLException {
}
});

return HttpClients.custom().setSSLSocketFactory(sslsf).build();

} catch (GeneralSecurityException e) {
throw e;
}
}

public static void main(String[] args) {
try {
JSONObject jsonParam = new JSONObject();
try {
jsonParam.put("touser","o8cOBwvAJTSPbOhOInWlb7GYdKuA");
jsonParam.put("template_id","yke5zUpgAolH5FzxIj8OuzX_qQ2jAEVpFWpzkU7a59c");
jsonParam.put("url","http://weixin.qq.com/download");
jsonParam.put("data","{}");
} catch (JSONException e) {
System.out.println(e);
e.printStackTrace();
}
String jsonStr = jsonParam.toString();

String str= post("https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=",jsonStr,"application/json", "UTF-8", 10000, 10000);
System.out.println(str);
} catch (ConnectTimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SocketTimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}