import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
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;
/**
*
* @author shilei
*
* @time 2019年11月23日 下午4:10:56
*
* @desc Http、Https发送Get、Post请求
*/
public class HttpApi {
/**
* 向指定URL发送GET方法的请求
*
* @param url 发送请求的URL
* @param param 请求参数是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
private static String sendGet(String url, String param, boolean isHttps) {
if (isHttps)
setUpHttpsURLConnection();
StringBuffer result = new StringBuffer();
BufferedReader in = null;
try {
if (ToolValid.isNotEmpty(param))
url = url + "?" + param;
URL realUrl = new URL(url);
// 打开和URL之间的连接
HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestMethod("GET");// POST GET PUT DELETE
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/json;charset=utf-8");
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = "";
while ((line = in.readLine()) != null) {
result.append(line);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (in != null)
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return result.toString();
}
/**
* 向指定 URL 发送POST方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
private static String sendPost(String url, String param, boolean isHttps) {
if (isHttps)
setUpHttpsURLConnection();
PrintWriter out = null;
BufferedReader in = null;
StringBuffer result = new StringBuffer();
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestMethod("POST");// POST GET PUT DELETE
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
out = new PrintWriter(conn.getOutputStream());
out.print(param);
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = "";
while ((line = in.readLine()) != null) {
result.append(line);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null)
out.close();
if (in != null)
in.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result.toString();
}
// Http(Post方式)
public static String sendPost(String url, String param) {
return sendPost(url, param, false);
}
// Http(Get方式)
public static String sendGet(String url, String param) {
return sendGet(url, param, false);
}
// Https(Get方式)
public static String sendHttpsGet(String url, String param) {
return sendGet(url, param, true);
}
// Https(Post方式)
public static String sendHttpsPost(String url, String param) {
return sendPost(url, param, true);
}
/**
*
* @desc 设置Https跳过证书验证
*
*/
private static void setUpHttpsURLConnection() {
try {
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, new TrustManager[] { new X509TrustManager() {
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public X509Certificate[] getAcceptedIssuers() {
// TODO Auto-generated method stub
return null;
}
} }, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
}
}
Http、Https发送Get、Post请求
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转载自blog.csdn.net/qq_39028580/article/details/103215332
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