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Merge branch 'eugenp:master' into JAVA-24001

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This commit is contained in:
anuragkumawat
2023-08-26 12:45:55 +05:30
committed by GitHub
parent 9443ad7229 d7c57a2e2b
commit dd7101873d
233 changed files with 7920 additions and 1480 deletions
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.gitignore
+4 -1
View File
@@ -124,4 +124,7 @@ devDb*.db
*.xjb
#neo4j
persistence-modules/neo4j/data/**
persistence-modules/neo4j/data/**
/deep-shallow-copy/.mvn/wrapper
/deep-shallow-copy/mvnw
/deep-shallow-copy/mvnw.cmd
algorithms-modules/algorithms-miscellaneous-5/src/main/java/com/baeldung/algorithms/maximumsubarray/KadaneAlgorithm.java
+7 -7
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@@ -5,7 +5,7 @@ import org.slf4j.LoggerFactory;
public class KadaneAlgorithm {
private Logger logger = LoggerFactory.getLogger(BruteForceAlgorithm.class.getName());
private Logger logger = LoggerFactory.getLogger(KadaneAlgorithm.class.getName());
public int maxSubArraySum(int[] arr) {
@@ -14,15 +14,15 @@ public class KadaneAlgorithm {
int end = 0;
int maxSoFar = arr[0], maxEndingHere = arr[0];
for (int i = 1; i < size; i++) {
if (arr[i] > maxEndingHere + arr[i]) {
start = i;
maxEndingHere = maxEndingHere + arr[i];
if (arr[i] > maxEndingHere) {
maxEndingHere = arr[i];
} else {
maxEndingHere = maxEndingHere + arr[i];
if (maxSoFar < maxEndingHere) {
start = i;
}
}
if (maxSoFar < maxEndingHere) {
maxSoFar = maxEndingHere;
end = i;
algorithms-modules/algorithms-miscellaneous-5/src/test/java/com/baeldung/algorithms/maximumsubarray/KadaneAlgorithmUnitTest.java
+13 -2
View File
@@ -7,7 +7,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
class KadaneAlgorithmUnitTest {
@Test
void givenArrayWithNegativeNumberWhenMaximumSubarrayThenReturns6() {
void givenArrayWithNegativeNumberWhenMaximumSubarrayThenReturnsExpectedResult() {
//given
int[] arr = new int[] { -3, 1, -8, 4, -1, 2, 1, -5, 5 };
//when
@@ -27,7 +27,7 @@ class KadaneAlgorithmUnitTest {
//then
assertEquals(-1, maxSum);
}
@Test
void givenArrayWithAllPosiitveNumbersWhenMaximumSubarrayThenReturnsExpectedResult() {
//given
@@ -39,4 +39,15 @@ class KadaneAlgorithmUnitTest {
assertEquals(10, maxSum);
}
@Test
void givenArrayToTestStartIndexWhenMaximumSubarrayThenReturnsExpectedResult() {
//given
int[] arr = new int[] { 1, 2, -1, 3, -6, -2 };
//when
KadaneAlgorithm algorithm = new KadaneAlgorithm();
int maxSum = algorithm.maxSubArraySum(arr);
//then
assertEquals(5, maxSum);
}
}
algorithms-modules/algorithms-miscellaneous-7/README.md
+1
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@@ -3,4 +3,5 @@
- [Algorithm to Identify and Validate a Credit Card Number](https://www.baeldung.com/java-validate-cc-number)
- [Find the N Most Frequent Elements in a Java Array](https://www.baeldung.com/java-n-most-frequent-elements-array)
- [Getting Pixel Array From Image in Java](https://www.baeldung.com/java-getting-pixel-array-from-image)
- [Calculate Distance Between Two Coordinates in Java](https://www.baeldung.com/java-find-distance-between-points)
- More articles: [[<-- prev]](/algorithms-miscellaneous-6)
algorithms-modules/algorithms-miscellaneous-7/src/main/java/com/baeldung/algorithms/latlondistance/EquirectangularApproximation.java
+19
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@@ -0,0 +1,19 @@
package com.baeldung.algorithms.latlondistance;
public class EquirectangularApproximation {
private static final int EARTH_RADIUS = 6371; // Approx Earth radius in KM
public static double calculateDistance(double lat1, double lon1, double lat2, double lon2) {
double lat1Rad = Math.toRadians(lat1);
double lat2Rad = Math.toRadians(lat2);
double lon1Rad = Math.toRadians(lon1);
double lon2Rad = Math.toRadians(lon2);
double x = (lon2Rad - lon1Rad) * Math.cos((lat1Rad + lat2Rad) / 2);
double y = (lat2Rad - lat1Rad);
double distance = Math.sqrt(x * x + y * y) * EARTH_RADIUS;
return distance;
}
}
algorithms-modules/algorithms-miscellaneous-7/src/main/java/com/baeldung/algorithms/latlondistance/HaversineDistance.java
+24
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@@ -0,0 +1,24 @@
package com.baeldung.algorithms.latlondistance;
public class HaversineDistance {
private static final int EARTH_RADIUS = 6371; // Approx Earth radius in KM
public static double calculateDistance(double startLat, double startLong,
double endLat, double endLong) {
double dLat = Math.toRadians((endLat - startLat));
double dLong = Math.toRadians((endLong - startLong));
startLat = Math.toRadians(startLat);
endLat = Math.toRadians(endLat);
double a = haversine(dLat) + Math.cos(startLat) * Math.cos(endLat) * haversine(dLong);
double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
return EARTH_RADIUS * c;
}
public static double haversine(double val) {
return Math.pow(Math.sin(val / 2), 2);
}
}
algorithms-modules/algorithms-miscellaneous-7/src/main/java/com/baeldung/algorithms/latlondistance/VincentyDistance.java
+53
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@@ -0,0 +1,53 @@
package com.baeldung.algorithms.latlondistance;
public class VincentyDistance {
// Constants for WGS84 ellipsoid model of Earth
private static final double SEMI_MAJOR_AXIS_MT = 6378137;
private static final double SEMI_MINOR_AXIS_MT = 6356752.314245;
private static final double FLATTENING = 1 / 298.257223563;
private static final double ERROR_TOLERANCE = 1e-12;
public static double calculateDistance(double latitude1, double longitude1, double latitude2, double longitude2) {
double U1 = Math.atan((1 - FLATTENING) * Math.tan(Math.toRadians(latitude1)));
double U2 = Math.atan((1 - FLATTENING) * Math.tan(Math.toRadians(latitude2)));
double sinU1 = Math.sin(U1);
double cosU1 = Math.cos(U1);
double sinU2 = Math.sin(U2);
double cosU2 = Math.cos(U2);
double longitudeDifference = Math.toRadians(longitude2 - longitude1);
double previousLongitudeDifference;
double sinSigma, cosSigma, sigma, sinAlpha, cosSqAlpha, cos2SigmaM;
do {
sinSigma = Math.sqrt(Math.pow(cosU2 * Math.sin(longitudeDifference), 2) +
Math.pow(cosU1 * sinU2 - sinU1 * cosU2 * Math.cos(longitudeDifference), 2));
cosSigma = sinU1 * sinU2 + cosU1 * cosU2 * Math.cos(longitudeDifference);
sigma = Math.atan2(sinSigma, cosSigma);
sinAlpha = cosU1 * cosU2 * Math.sin(longitudeDifference) / sinSigma;
cosSqAlpha = 1 - Math.pow(sinAlpha, 2);
cos2SigmaM = cosSigma - 2 * sinU1 * sinU2 / cosSqAlpha;
if (Double.isNaN(cos2SigmaM)) {
cos2SigmaM = 0;
}
previousLongitudeDifference = longitudeDifference;
double C = FLATTENING / 16 * cosSqAlpha * (4 + FLATTENING * (4 - 3 * cosSqAlpha));
longitudeDifference = Math.toRadians(longitude2 - longitude1) + (1 - C) * FLATTENING * sinAlpha *
(sigma + C * sinSigma * (cos2SigmaM + C * cosSigma * (-1 + 2 * Math.pow(cos2SigmaM, 2))));
} while (Math.abs(longitudeDifference - previousLongitudeDifference) > ERROR_TOLERANCE);
double uSq = cosSqAlpha * (Math.pow(SEMI_MAJOR_AXIS_MT, 2) - Math.pow(SEMI_MINOR_AXIS_MT, 2)) / Math.pow(SEMI_MINOR_AXIS_MT, 2);
double A = 1 + uSq / 16384 * (4096 + uSq * (-768 + uSq * (320 - 175 * uSq)));
double B = uSq / 1024 * (256 + uSq * (-128 + uSq * (74 - 47 * uSq)));
double deltaSigma = B * sinSigma * (cos2SigmaM + B / 4 * (cosSigma * (-1 + 2 * Math.pow(cos2SigmaM, 2)) -
B / 6 * cos2SigmaM * (-3 + 4 * Math.pow(sinSigma, 2)) * (-3 + 4 * Math.pow(cos2SigmaM, 2))));
double distanceMt = SEMI_MINOR_AXIS_MT * A * (sigma - deltaSigma);
return distanceMt / 1000;
}
}
algorithms-modules/algorithms-miscellaneous-7/src/test/java/com/baeldung/algorithms/latlondistance/GeoDistanceUnitTest.java
+26
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@@ -0,0 +1,26 @@
package com.baeldung.algorithms.latlondistance;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertTrue;
class GeoDistanceUnitTest {
@Test
public void testCalculateDistance() {
double lat1 = 40.714268; // New York
double lon1 = -74.005974;
double lat2 = 34.0522; // Los Angeles
double lon2 = -118.2437;
double equirectangularDistance = EquirectangularApproximation.calculateDistance(lat1, lon1, lat2, lon2);
double haversineDistance = HaversineDistance.calculateDistance(lat1, lon1, lat2, lon2);
double vincentyDistance = VincentyDistance.calculateDistance(lat1, lon1, lat2, lon2);
double expectedDistance = 3944;
assertTrue(Math.abs(equirectangularDistance - expectedDistance) < 100);
assertTrue(Math.abs(haversineDistance - expectedDistance) < 10);
assertTrue(Math.abs(vincentyDistance - expectedDistance) < 0.5);
}
}
apache-httpclient-2/src/main/java/com/baeldung/tlsversion/ClientTlsVersionExamples.java
+37 -27
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@@ -1,36 +1,43 @@
package com.baeldung.tlsversion;
import javax.net.ssl.SSLSocket;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import javax.net.ssl.SSLSocket;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.config.TlsConfig;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
import org.apache.hc.client5.http.io.HttpClientConnectionManager;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.ssl.TLS;
import org.apache.hc.core5.ssl.SSLContexts;
import org.apache.hc.core5.util.Timeout;
public class ClientTlsVersionExamples {
public static CloseableHttpClient setViaSocketFactory() {
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
SSLContexts.createDefault(),
new String[] { "TLSv1.2", "TLSv1.3" },
null,
SSLConnectionSocketFactory.getDefaultHostnameVerifier());
final HttpClientConnectionManager cm = PoolingHttpClientConnectionManagerBuilder.create()
.setDefaultTlsConfig(TlsConfig.custom()
.setHandshakeTimeout(Timeout.ofSeconds(30))
.setSupportedProtocols(TLS.V_1_2, TLS.V_1_3)
.build())
.build();
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
return HttpClients.custom()
.setConnectionManager(cm)
.build();
}
public static CloseableHttpClient setTlsVersionPerConnection() {
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(SSLContexts.createDefault()) {
@Override
protected void prepareSocket(SSLSocket socket) {
String hostname = socket.getInetAddress().getHostName();
String hostname = socket.getInetAddress()
.getHostName();
if (hostname.endsWith("internal.system.com")) {
socket.setEnabledProtocols(new String[] { "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3" });
} else {
@@ -39,7 +46,14 @@ public class ClientTlsVersionExamples {
}
};
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
HttpClientConnectionManager connManager = PoolingHttpClientConnectionManagerBuilder.create()
.setSSLSocketFactory(sslsf)
.build();
return HttpClients.custom()
.setConnectionManager(connManager)
.build();
}
// To configure the TLS versions for the client, set the https.protocols system property during runtime.
@@ -47,15 +61,11 @@ public class ClientTlsVersionExamples {
public static CloseableHttpClient setViaSystemProperties() {
return HttpClients.createSystem();
// Alternatively:
// return HttpClients.custom().useSystemProperties().build();
//return HttpClients.custom().useSystemProperties().build();
}
public static void main(String[] args) throws IOException {
// Alternatively:
// CloseableHttpClient httpClient = setTlsVersionPerConnection();
// CloseableHttpClient httpClient = setViaSystemProperties();
try (CloseableHttpClient httpClient = setViaSocketFactory();
CloseableHttpResponse response = httpClient.execute(new HttpGet("https://httpbin.org/"))) {
try (CloseableHttpClient httpClient = setViaSocketFactory(); CloseableHttpResponse response = httpClient.execute(new HttpGet("https://httpbin.org/"))) {
HttpEntity entity = response.getEntity();
EntityUtils.consume(entity);
apache-httpclient/src/test/java/com/baeldung/httpclient/advancedconfig/HttpClientAdvancedConfigurationIntegrationTest.java
+32 -33
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@@ -1,29 +1,5 @@
package com.baeldung.httpclient.advancedconfig;
import com.github.tomakehurst.wiremock.junit.WireMockRule;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.AuthCache;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.BasicAuthCache;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
import org.junit.Rule;
import org.junit.Test;
import java.io.IOException;
import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
import static com.github.tomakehurst.wiremock.client.WireMock.containing;
import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
@@ -34,6 +10,30 @@ import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
import static com.github.tomakehurst.wiremock.client.WireMock.urlMatching;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import org.apache.hc.client5.http.auth.AuthCache;
import org.apache.hc.client5.http.auth.AuthScope;
import org.apache.hc.client5.http.auth.CredentialsProvider;
import org.apache.hc.client5.http.auth.StandardAuthScheme;
import org.apache.hc.client5.http.classic.HttpClient;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.classic.methods.HttpPost;
import org.apache.hc.client5.http.impl.auth.BasicAuthCache;
import org.apache.hc.client5.http.impl.auth.BasicScheme;
import org.apache.hc.client5.http.impl.auth.CredentialsProviderBuilder;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.routing.DefaultProxyRoutePlanner;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.core5.http.HttpHeaders;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.io.entity.StringEntity;
import org.junit.Rule;
import org.junit.Test;
import com.github.tomakehurst.wiremock.junit.WireMockRule;
public class HttpClientAdvancedConfigurationIntegrationTest {
@Rule
@@ -59,7 +59,7 @@ public class HttpClientAdvancedConfigurationIntegrationTest {
HttpResponse response = httpClient.execute(httpGet);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
assertEquals(response.getCode(), 200);
}
@Test
@@ -82,7 +82,7 @@ public class HttpClientAdvancedConfigurationIntegrationTest {
HttpResponse response = httpClient.execute(httpPost);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
assertEquals(response.getCode(), 200);
}
@@ -107,7 +107,7 @@ public class HttpClientAdvancedConfigurationIntegrationTest {
HttpResponse response = httpclient.execute(httpGet);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
assertEquals(response.getCode(), 200);
proxyMock.verify(getRequestedFor(urlEqualTo("/private")));
serviceMock.verify(getRequestedFor(urlEqualTo("/private")));
}
@@ -125,14 +125,12 @@ public class HttpClientAdvancedConfigurationIntegrationTest {
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
// Client credentials
CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(new AuthScope(proxy),
new UsernamePasswordCredentials("username_admin", "secret_password"));
CredentialsProvider credentialsProvider = CredentialsProviderBuilder.create()
.add(new AuthScope(proxy), "username_admin", "secret_password".toCharArray())
.build();
// Create AuthCache instance
AuthCache authCache = new BasicAuthCache();
// Generate BASIC scheme object and add it to the local auth cache
BasicScheme basicAuth = new BasicScheme();
authCache.put(proxy, basicAuth);
@@ -149,10 +147,11 @@ public class HttpClientAdvancedConfigurationIntegrationTest {
//when
final HttpGet httpGet = new HttpGet("http://localhost:8089/private");
httpGet.setHeader("Authorization", StandardAuthScheme.BASIC);
HttpResponse response = httpclient.execute(httpGet, context);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
assertEquals(response.getCode(), 200);
proxyMock.verify(getRequestedFor(urlEqualTo("/private")).withHeader("Authorization", containing("Basic")));
serviceMock.verify(getRequestedFor(urlEqualTo("/private")));
}
apache-httpclient/src/test/java/com/baeldung/httpclient/conn/HttpClientConnectionManagementLiveTest.java
+151 -190
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apache-httpclient/src/test/java/com/baeldung/httpclient/conn/MultiHttpClientConnThread.java
+8 -9
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@@ -2,12 +2,12 @@ package com.baeldung.httpclient.conn;
import java.io.IOException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -45,22 +45,21 @@ public class MultiHttpClientConnThread extends Thread {
try {
logger.debug("Thread Running: " + getName());
logger.debug("Thread Running: " + getName());
if (connManager != null) {
logger.info("Before - Leased Connections = " + connManager.getTotalStats().getLeased());
logger.info("Before - Available Connections = " + connManager.getTotalStats().getAvailable());
}
final HttpResponse response = client.execute(get);
HttpEntity entity = client.execute(get).getEntity();
if (connManager != null) {
leasedConn = connManager.getTotalStats().getLeased();
logger.info("After - Leased Connections = " + connManager.getTotalStats().getLeased());
logger.info("After - Available Connections = " + connManager.getTotalStats().getAvailable());
}
EntityUtils.consume(entity);
EntityUtils.consume(response.getEntity());
} catch (final IOException ex) {
logger.error("", ex);
}
apache-httpclient/src/test/java/com/baeldung/httpclient/conn/TesterVersion_MultiHttpClientConnThread.java
+3 -4
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@@ -2,10 +2,9 @@ package com.baeldung.httpclient.conn;
import java.io.IOException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
apache-httpclient4/src/main/java/com/baeldung/tlsversion/ClientTlsVersionExamples.java
+64
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@@ -0,0 +1,64 @@
package com.baeldung.tlsversion;
import javax.net.ssl.SSLSocket;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
public class ClientTlsVersionExamples {
public static CloseableHttpClient setViaSocketFactory() {
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
SSLContexts.createDefault(),
new String[] { "TLSv1.2", "TLSv1.3" },
null,
SSLConnectionSocketFactory.getDefaultHostnameVerifier());
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
}
public static CloseableHttpClient setTlsVersionPerConnection() {
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(SSLContexts.createDefault()) {
@Override
protected void prepareSocket(SSLSocket socket) {
String hostname = socket.getInetAddress().getHostName();
if (hostname.endsWith("internal.system.com")) {
socket.setEnabledProtocols(new String[] { "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3" });
} else {
socket.setEnabledProtocols(new String[] { "TLSv1.3" });
}
}
};
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
}
// To configure the TLS versions for the client, set the https.protocols system property during runtime.
// For example: java -Dhttps.protocols=TLSv1.1,TLSv1.2,TLSv1.3 -jar webClient.jar
public static CloseableHttpClient setViaSystemProperties() {
return HttpClients.createSystem();
// Alternatively:
// return HttpClients.custom().useSystemProperties().build();
}
public static void main(String[] args) throws IOException {
// Alternatively:
// CloseableHttpClient httpClient = setTlsVersionPerConnection();
// CloseableHttpClient httpClient = setViaSystemProperties();
try (CloseableHttpClient httpClient = setViaSocketFactory();
CloseableHttpResponse response = httpClient.execute(new HttpGet("https://httpbin.org/"))) {
HttpEntity entity = response.getEntity();
EntityUtils.consume(entity);
}
}
}
apache-httpclient4/src/test/java/com/baeldung/httpclient/advancedconfig/HttpClientAdvancedConfigurationIntegrationTest.java
+161
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@@ -0,0 +1,161 @@
package com.baeldung.httpclient.advancedconfig;
import com.github.tomakehurst.wiremock.junit.WireMockRule;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.AuthCache;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.BasicAuthCache;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
import org.junit.Rule;
import org.junit.Test;
import java.io.IOException;
import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
import static com.github.tomakehurst.wiremock.client.WireMock.containing;
import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
import static com.github.tomakehurst.wiremock.client.WireMock.get;
import static com.github.tomakehurst.wiremock.client.WireMock.getRequestedFor;
import static com.github.tomakehurst.wiremock.client.WireMock.post;
import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
import static com.github.tomakehurst.wiremock.client.WireMock.urlMatching;
import static org.junit.Assert.assertEquals;
public class HttpClientAdvancedConfigurationIntegrationTest {
@Rule
public WireMockRule serviceMock = new WireMockRule(8089);
@Rule
public WireMockRule proxyMock = new WireMockRule(8090);
@Test
public void givenClientWithCustomUserAgentHeader_whenExecuteRequest_shouldReturn200() throws IOException {
//given
String userAgent = "BaeldungAgent/1.0";
serviceMock.stubFor(get(urlEqualTo("/detail"))
.withHeader("User-Agent", equalTo(userAgent))
.willReturn(aResponse()
.withStatus(200)));
HttpClient httpClient = HttpClients.createDefault();
HttpGet httpGet = new HttpGet("http://localhost:8089/detail");
httpGet.setHeader(HttpHeaders.USER_AGENT, userAgent);
//when
HttpResponse response = httpClient.execute(httpGet);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
}
@Test
public void givenClientThatSendDataInBody_whenSendXmlInBody_shouldReturn200() throws IOException {
//given
String xmlBody = "<xml><id>1</id></xml>";
serviceMock.stubFor(post(urlEqualTo("/person"))
.withHeader("Content-Type", equalTo("application/xml"))
.withRequestBody(equalTo(xmlBody))
.willReturn(aResponse()
.withStatus(200)));
HttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost("http://localhost:8089/person");
httpPost.setHeader("Content-Type", "application/xml");
StringEntity xmlEntity = new StringEntity(xmlBody);
httpPost.setEntity(xmlEntity);
//when
HttpResponse response = httpClient.execute(httpPost);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
}
@Test
public void givenServerThatIsBehindProxy_whenClientIsConfiguredToSendRequestViaProxy_shouldReturn200() throws IOException {
//given
proxyMock.stubFor(get(urlMatching(".*"))
.willReturn(aResponse().proxiedFrom("http://localhost:8089/")));
serviceMock.stubFor(get(urlEqualTo("/private"))
.willReturn(aResponse().withStatus(200)));
HttpHost proxy = new HttpHost("localhost", 8090);
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
HttpClient httpclient = HttpClients.custom()
.setRoutePlanner(routePlanner)
.build();
//when
final HttpGet httpGet = new HttpGet("http://localhost:8089/private");
HttpResponse response = httpclient.execute(httpGet);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
proxyMock.verify(getRequestedFor(urlEqualTo("/private")));
serviceMock.verify(getRequestedFor(urlEqualTo("/private")));
}
@Test
public void givenServerThatIsBehindAuthorizationProxy_whenClientSendRequest_shouldAuthorizeProperly() throws IOException {
//given
proxyMock.stubFor(get(urlMatching("/private"))
.willReturn(aResponse().proxiedFrom("http://localhost:8089/")));
serviceMock.stubFor(get(urlEqualTo("/private"))
.willReturn(aResponse().withStatus(200)));
HttpHost proxy = new HttpHost("localhost", 8090);
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
// Client credentials
CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(new AuthScope(proxy),
new UsernamePasswordCredentials("username_admin", "secret_password"));
// Create AuthCache instance
AuthCache authCache = new BasicAuthCache();
// Generate BASIC scheme object and add it to the local auth cache
BasicScheme basicAuth = new BasicScheme();
authCache.put(proxy, basicAuth);
HttpClientContext context = HttpClientContext.create();
context.setCredentialsProvider(credentialsProvider);
context.setAuthCache(authCache);
HttpClient httpclient = HttpClients.custom()
.setRoutePlanner(routePlanner)
.setDefaultCredentialsProvider(credentialsProvider)
.build();
//when
final HttpGet httpGet = new HttpGet("http://localhost:8089/private");
HttpResponse response = httpclient.execute(httpGet, context);
//then
assertEquals(response.getStatusLine().getStatusCode(), 200);
proxyMock.verify(getRequestedFor(urlEqualTo("/private")).withHeader("Authorization", containing("Basic")));
serviceMock.verify(getRequestedFor(urlEqualTo("/private")));
}
}
apache-httpclient4/src/test/java/com/baeldung/httpclient/httpclient/conn/HttpClientConnectionManagementLiveTest.java
+349
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apache-httpclient4/src/test/java/com/baeldung/httpclient/httpclient/conn/IdleConnectionMonitorThread.java
+41
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@@ -0,0 +1,41 @@
package com.baeldung.httpclient.httpclient.conn;
import java.util.concurrent.TimeUnit;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
public class IdleConnectionMonitorThread extends Thread {
private final HttpClientConnectionManager connMgr;
private volatile boolean shutdown;
IdleConnectionMonitorThread(final PoolingHttpClientConnectionManager connMgr) {
super();
this.connMgr = connMgr;
}
// API
@Override
public final void run() {
try {
while (!shutdown) {
synchronized (this) {
wait(1000);
connMgr.closeExpiredConnections();
connMgr.closeIdleConnections(30, TimeUnit.SECONDS);
}
}
} catch (final InterruptedException ex) {
shutdown();
}
}
private void shutdown() {
shutdown = true;
synchronized (this) {
notifyAll();
}
}
}
apache-httpclient4/src/test/java/com/baeldung/httpclient/httpclient/conn/MultiHttpClientConnThread.java
+69
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@@ -0,0 +1,69 @@
package com.baeldung.httpclient.httpclient.conn;
import java.io.IOException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class MultiHttpClientConnThread extends Thread {
private final Logger logger = LoggerFactory.getLogger(getClass());
private final CloseableHttpClient client;
private final HttpGet get;
private PoolingHttpClientConnectionManager connManager;
private int leasedConn;
MultiHttpClientConnThread(final CloseableHttpClient client, final HttpGet get, final PoolingHttpClientConnectionManager connManager) {
this.client = client;
this.get = get;
this.connManager = connManager;
leasedConn = 0;
}
MultiHttpClientConnThread(final CloseableHttpClient client, final HttpGet get) {
this.client = client;
this.get = get;
}
// API
final int getLeasedConn() {
return leasedConn;
}
//
@Override
public final void run() {
try {
logger.debug("Thread Running: " + getName());
logger.debug("Thread Running: " + getName());
if (connManager != null) {
logger.info("Before - Leased Connections = " + connManager.getTotalStats().getLeased());
logger.info("Before - Available Connections = " + connManager.getTotalStats().getAvailable());
}
final HttpResponse response = client.execute(get);
if (connManager != null) {
leasedConn = connManager.getTotalStats().getLeased();
logger.info("After - Leased Connections = " + connManager.getTotalStats().getLeased());
logger.info("After - Available Connections = " + connManager.getTotalStats().getAvailable());
}
EntityUtils.consume(response.getEntity());
} catch (final IOException ex) {
logger.error("", ex);
}
}
}
apache-httpclient4/src/test/java/com/baeldung/httpclient/httpclient/conn/TesterVersion_MultiHttpClientConnThread.java
+46
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@@ -0,0 +1,46 @@
package com.baeldung.httpclient.httpclient.conn;
import java.io.IOException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Preconditions;
public class TesterVersion_MultiHttpClientConnThread extends Thread {
private final Logger logger = LoggerFactory.getLogger(getClass());
private final CloseableHttpClient client;
private final HttpGet get;
private PoolingHttpClientConnectionManager connManager;
TesterVersion_MultiHttpClientConnThread(final CloseableHttpClient client, final HttpGet get, final PoolingHttpClientConnectionManager connManager) {
this.client = client;
this.get = get;
this.connManager = Preconditions.checkNotNull(connManager);
}
//
@Override
public final void run() {
try {
logger.debug("Thread Running: " + getName());
logger.info("Before - Leased Connections = " + connManager.getTotalStats().getLeased());
logger.info("Before - Available Connections = " + connManager.getTotalStats().getAvailable());
client.execute(get);
logger.info("After - Leased Connections = " + connManager.getTotalStats().getLeased());
logger.info("After - Available Connections = " + connManager.getTotalStats().getAvailable());
} catch (final IOException ex) {
logger.error("", ex);
}
}
}
apache-kafka-2/README.md
+1
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@@ -12,3 +12,4 @@ You can build the project from the command line using: *mvn clean install*, or i
- [Is a Key Required as Part of Sending Messages to Kafka?](https://www.baeldung.com/java-kafka-message-key)
- [Read Data From the Beginning Using Kafka Consumer API](https://www.baeldung.com/java-kafka-consumer-api-read)
- [Get Partition Count for a Topic in Kafka](https://www.baeldung.com/java-kafka-partition-count-topic)
- [bootstrap-server in Kafka Configuration](https://www.baeldung.com/java-kafka-bootstrap-server)
apache-kafka-2/src/main/java/com/baeldung/kafka/consumer/SimpleConsumerWithBootStrapServers.java
+39
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@@ -0,0 +1,39 @@
package com.baeldung.kafka.consumer;
import org.apache.kafka.clients.consumer.*;
import org.apache.kafka.common.serialization.LongDeserializer;
import org.apache.kafka.common.serialization.StringDeserializer;
import java.time.Duration;
import java.util.Arrays;
import java.util.Properties;
public class SimpleConsumerWithBootStrapServers {
public static void main(String[] args) {
try(final Consumer<Long, String> consumer = createConsumer()) {
ConsumerRecords<Long, String> records = consumer.poll(Duration.ofMinutes(1));
for(ConsumerRecord<Long, String> record : records) {
System.out.println(record.value());
}
}
}
private static Consumer<Long, String> createConsumer() {
final Properties props = new Properties();
props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
"localhost:9092,another-host.com:29092");
props.put(ConsumerConfig.GROUP_ID_CONFIG,
"MySampleConsumer");
props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
LongDeserializer.class.getName());
props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG,
StringDeserializer.class.getName());
// Create the consumer using props.
final Consumer<Long, String> consumer = new KafkaConsumer<Long, String>(props);
// Subscribe to the topic.
consumer.subscribe(Arrays.asList("samples"));
return consumer;
}
}
apache-libraries-2/README.md
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apache-libraries-2/pom.xml
+29
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@@ -0,0 +1,29 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>apache-libraries-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-libraries-2</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>${javax.validation.validation-api.version}</version>
</dependency>
</dependencies>
<properties>
<javax.validation.validation-api.version>2.0.1.Final</javax.validation.validation-api.version>
</properties>
</project>
apache-libraries-2/src/main/java/com/baeldung/xslt/XSLTProcessor.java
+18
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@@ -0,0 +1,18 @@
package com.baeldung.xslt;
import javax.xml.transform.*;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import java.io.File;
public class XSLTProcessor {
public static void transformXMLUsingXSLT(String inputXMLPath, String xsltPath, String outputHTMLPath) throws TransformerException {
Source xmlSource = new StreamSource(new File(inputXMLPath));
Source xsltSource = new StreamSource(new File(xsltPath));
Result output = new StreamResult(new File(outputHTMLPath));
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer(xsltSource);
transformer.transform(xmlSource, output);
}
}
apache-libraries-2/src/main/resources/avroHttpRequest-schema.avsc
+47
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@@ -0,0 +1,47 @@
{
"type":"record",
"name":"AvroHttpRequest",
"namespace":"com.baeldung.avro.model",
"fields":[
{
"name":"requestTime",
"type":"long"
},
{
"name":"clientIdentifier",
"type":{
"type":"record",
"name":"ClientIdentifier",
"fields":[
{
"name":"hostName",
"type":"string"
},
{
"name":"ipAddress",
"type":"string"
}
]
}
},
{
"name":"employeeNames",
"type":{
"type":"array",
"items":"string"
},
"default":null
},
{
"name":"active",
"type":{
"type":"enum",
"name":"Active",
"symbols":[
"YES",
"NO"
]
}
}
]
}
apache-libraries-2/src/main/resources/log4j2.xml
+18
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@@ -0,0 +1,18 @@
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</Console>
</Appenders>
<Loggers>
<Logger name="org.apache.meecrowave" level="warn">
<AppenderRef ref="Console"/>
</Logger>
<Root level="info">
<AppenderRef ref="Console"/>
</Root>
</Loggers>
</Configuration>
apache-libraries-2/src/main/resources/logback.xml
+13
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@@ -0,0 +1,13 @@
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
</root>
</configuration>
apache-libraries-2/src/test/java/com/baeldung/xslt/XSLTProcessorUnitTest.java
+29
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@@ -0,0 +1,29 @@
package com.baeldung.xslt;
import org.junit.jupiter.api.Test;
import javax.xml.transform.TransformerException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class XSLTProcessorUnitTest {
@Test
public void givenValidInputAndStylesheet_whenTransformingXML_thenOutputHTMLCreated() throws TransformerException, IOException {
// Given
String inputXMLPath = "src/test/resources/input.xml";
String xsltPath = "src/test/resources/stylesheet.xslt";
String outputHTMLPath = "src/test/resources/output.html";
XSLTProcessor.transformXMLUsingXSLT(inputXMLPath, xsltPath, outputHTMLPath);
Path outputFile = Paths.get(outputHTMLPath);
assertTrue(Files.exists(outputFile));
}
}
apache-libraries-2/src/test/resources/input.xml
+11
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@@ -0,0 +1,11 @@
<?xml version="1.0" encoding="UTF-8"?>
<root>
<person gender="male">
<name>John Doe</name>
<age>30</age>
</person>
<person gender="female">
<name>Jane Smith</name>
<age>25</age>
</person>
</root>
apache-libraries-2/src/test/resources/output.html
+3
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@@ -0,0 +1,3 @@
<?xml version="1.0" encoding="UTF-8"?>
<p>Male person: John Doe, Age: 30</p>
<p>Female person: Jane Smith, Age: 25</p>

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