HttpClient建立HTTPS链接时信任所有证书
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2022-07-10 15:23:38
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使用httpClient4.5 进行 HTTP S连接一些服务器时,如微信服务器,由于对方不需要任何证书校验,因此我们作为客户端也不需要设置任何证书。
这时就需要使用下面这种写法来进行HttpClient初始化。
package com.test.helloworld;
import org.apache.http.*;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
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.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class HttpClent {
private static final String HTTP = "http";
private static final String HTTPS = "https";
private static SSLConnectionSocketFactory sslsf = null;
private static PoolingHttpClientConnectionManager cm = null;
private static SSLContextBuilder builder = null;
static {
try {
builder = new SSLContextBuilder();
// Trust all certificaties
builder.loadTrustMaterial(null, new TrustStrategy() {
@Override
public boolean isTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
return true;
}
});
sslsf = new SSLConnectionSocketFactory(builder.build(), new String[]{"SSLv2Hello", "SSLv3", "TLSv1", "TLSv1.2"}, null, NoopHostnameVerifier.INSTANCE);
Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
.register(HTTP, new PlainConnectionSocketFactory())
.register(HTTPS, sslsf)
.build();
cm = new PoolingHttpClientConnectionManager(registry);
cm.setMaxTotal(200);//max connection
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* httpClient post请求
* @param url 请求url
* @param header 头部信息
* @param param 请求参数 form提交适用
* @param entity 请求实体 json/xml提交适用
* @return 可能为空 需要处理
* @throws Exception
*
*/
public static String post(String url, Map<String, String> header, Map<String, String> param, HttpEntity entity) throws Exception {
String result = "";
CloseableHttpClient httpClient = null;
try {
httpClient = getHttpClient();
HttpPost httpPost = new HttpPost(url);
// 设置头信息
if (null != header) {
for (Map.Entry<String, String> entry : header.entrySet()) {
httpPost.addHeader(entry.getKey(), entry.getValue());
}
}
// 设置请求参数
if (null != param) {
List<NameValuePair> formparams = new ArrayList<NameValuePair>();
for (Map.Entry<String, String> entry : param.entrySet()) {
//给参数赋值
formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(formparams);
httpPost.setEntity(urlEncodedFormEntity);
}
// 设置实体 优先级高
if (entity != null) {
httpPost.setEntity(entity);
}
HttpResponse httpResponse = httpClient.execute(httpPost);
int statusCode = httpResponse.getStatusLine().getStatusCode();
if (statusCode == HttpStatus.SC_OK) {
HttpEntity resEntity = httpResponse.getEntity();
result = EntityUtils.toString(resEntity);
} else {
readHttpResponse(httpResponse);
}
} catch (Exception e) {throw e;
} finally {
if (httpClient != null) {
httpClient.close();
}
}
return result;
}
public static CloseableHttpClient getHttpClient() throws Exception {
CloseableHttpClient httpClient = HttpClients.custom()
.setSSLSocketFactory(sslsf)
.setConnectionManager(cm)
.setConnectionManagerShared(true)
.build();
return httpClient;
}
public static String readHttpResponse(HttpResponse httpResponse)
throws ParseException, IOException {
StringBuilder builder = new StringBuilder();
// 获取响应消息实体
HttpEntity entity = httpResponse.getEntity();
// 响应状态
builder.append("status:" + httpResponse.getStatusLine());
builder.append("headers:");
HeaderIterator iterator = httpResponse.headerIterator();
while (iterator.hasNext()) {
builder.append("\t" + iterator.next());
}
// 判断响应实体是否为空
if (entity != null) {
String responseString = EntityUtils.toString(entity);
builder.append("response length:" + responseString.length());
builder.append("response content:" + responseString.replace("\r\n", ""));
}
return builder.toString();
}
}
转载于:https://my.oschina.net/ironthrone/blog/900663
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