Java Https工具类，Java Https Post请求
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©Copyright 蕃薯耀 2019-01-08
http://fanshuyao.iteye.com/
一、使用jsoup进行连接
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.X509TrustManager;
import org.jsoup.Connection;
import org.jsoup.Connection.Response;
import org.jsoup.Jsoup;
public class HttpsUtils {
/**
* 请求超时时间
*/
private static final int TIME_OUT = 120000;
/**
* Https请求
*/
private static final String HTTPS = "https";
/**
* 返回成功状态码
*/
private static final int OK = 200;
/**
* 纯字符串参数post请求
*
* @param url 请求URL地址
* @param paramMap 请求字符串参数集合
* @return 服务器返回内容
* @throws Exception
*/
public static String post(String url, Map paramMap) throws Exception {
Response response = doPostRequest(url, paramMap, null);
return response.body();
}
/**
* 带上传文件的post请求
*
* @param url 请求URL地址
* @param paramMap 请求字符串参数集合
* @param fileMap 请求文件参数集合
* @return 服务器返回内容
* @throws Exception
*/
public static String post(String url, Map paramMap, Map fileMap) throws Exception {
Response response = doPostRequest(url, paramMap, fileMap);
return response.body();
}
/**
* 执行post请求
*
* @param url 请求URL地址
* @param paramMap 请求字符串参数集合
* @param fileMap 请求文件参数集合
* @return 服务器相应对象
* @throws Exception
*/
public static Response doPostRequest(String url, Map paramMap, Map fileMap) throws Exception {
if (null == url || url.isEmpty()) {
throw new Exception("The request URL is blank.");
}
// 如果是Https请求
if (url.startsWith(HTTPS)) {
getTrust();
}
Connection connection = Jsoup.connect(url);
//Connection connection = Jsoup.connect(url).url(new URL(null, url, new sun.net.www.protocol.https.Handler()));//可用
connection.method(Connection.Method.POST);
connection.timeout(TIME_OUT);
connection.header("Content-Type", "multipart/form-data");
connection.ignoreHttpErrors(true);
connection.ignoreContentType(true);
// 添加字符串类参数
if (null != paramMap && !paramMap.isEmpty()) {
connection.data(paramMap);
}
// 添加文件参数
if (null != fileMap && !fileMap.isEmpty()) {
InputStream in = null;
File file = null;
Set> set = fileMap.entrySet();
try {
for (Entry e : set) {
file = e.getValue();
in = new FileInputStream(file);
connection.data(e.getKey(), file.getName(), in);
}
} catch (FileNotFoundException e) {
throw new Exception(e.getMessage());
}
}
try {
Response response = connection.execute();
if (response.statusCode() != OK) {
throw new Exception(response.statusMessage());
}
return response;
} catch (IOException e) {
throw new Exception(e);
}
}
/**
* 获取服务器信任
*/
private static void getTrust() {
try {
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
SSLContext context = SSLContext.getInstance("TLS");
context.init(null, new X509TrustManager[] { new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {}
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {}
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
} }, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());
} catch (Exception e) {
e.printStackTrace();
}
}
}
在可以连接互联网的时候没有问题，但在公司内网，访问不到互联网，只能访问某些接口时会出错，如下：
java.lang.Exception: javax.net.ssl.SSLKeyException: FATAL Alert:BAD_CERTIFICATE - A corrupt or unuseable certificate was received.
发现这个问题主要是Connection连接的问题。
如果修改Connection连接如下就可正常访问：
Connection connection = Jsoup.connect(url).url(new URL(null, url, new sun.net.www.protocol.https.Handler()));
或者：
Connection connection = Jsoup.connect(url).url(new URL(null, url, new sun.net.www.protocol.https.Handler())).validateTLSCertificates(false);
使用代理（未测试）：
Connection connection = Jsoup.connect(url).url(new URL(null, url, new sun.net.www.protocol.https.Handler())).userAgent("Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
二、使用原生的HttpURLConnection连接
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.cert.CertificateException;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import javax.security.cert.X509Certificate;
public class HttpsClientUtil {
private final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
public boolean verify(String hostname, SSLSession session) {
return true;
}
};
private static void trustAllHosts() {
// Create a trust manager that does not validate certificate chains
TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
public void checkClientTrusted(X509Certificate[] chain, String authType) {
}
public void checkServerTrusted(X509Certificate[] chain, String authType) {
}
@Override
public void checkClientTrusted(
java.security.cert.X509Certificate[] arg0, String arg1)
throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public void checkServerTrusted(
java.security.cert.X509Certificate[] arg0, String arg1)
throws CertificateException {
// TODO Auto-generated method stub
}
}};
// Install the all-trusting trust manager
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
e.printStackTrace();
}
}
public static String sendHtpps(String a,String url) {
String result = "";
OutputStreamWriter out = null;
BufferedReader in = null;
HttpURLConnection conn;
try {
trustAllHosts();
URL realUrl = new URL(null,url,new sun.net.www.protocol.https.Handler());
//通过请求地址判断请求类型(http或者是https)
if (realUrl.getProtocol().toLowerCase().equals("https")) {
HttpsURLConnection https = (HttpsURLConnection) realUrl.openConnection();
https.setHostnameVerifier(DO_NOT_VERIFY);
conn = https;
} else {
conn = (HttpURLConnection) realUrl.openConnection();
}
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
out.write(a);
//错误方式，这种方式容易出现乱码
// PrintWriter out = new PrintWriter(connection.getOutputStream());
/*out.print(a);*/
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
result = "sendHtpps error";
e.printStackTrace();
} finally {// 使用finally块来关闭输出流、输入流
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
}
github两个比较好的Http请求工具，支持Https
1、https://github.com/kevinsawicki/http-request
com.github.kevinsawicki http-request 6.0
2、https://github.com/hsiafan/requests
net.dongliu requests 5.0.3
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©Copyright 蕃薯耀 2019-01-08
http://fanshuyao.iteye.com/
