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--- informatica:linux:java:maven [2015/04/13 20:19] – external edit 127.0.0.1
+++ informatica:linux:java:maven [2017/07/26 11:49] (current) – [Proyecto POST] jose
@@ Line 29: / Line 29: @@
 Aplicación sola: \\
 {{:informatica:linux:java:miappweb.war|}}
+====== Proyecto Hello World ======
+Fuente: https://cwiki.apache.org/confluence/display/MAVEN/Tutorial%3A+Build+a+JAR+file+with+Maven+in+5+minutes
+  group id: org.iwanttobefreak.post
+  artifact id: java-archive
+  version: 1.0-SNAPSHOT
+Creamos el siguiente pom.xml
+<code>
+<project>
+ <modelVersion>4.0.0</modelVersion>
+ <groupId>org.iwanttobefreak.post</groupId>
+ <artifactId>java-archive</artifactId>
+ <version>1.0-SNAPSHOT</version>
+</project>
+</code>
+También podemos añadir la versión de java, me daba algún error porque era la 5 por defecto:
+<code>
+<properties>
+    <maven.compiler.source>1.7</maven.compiler.source>
+    <maven.compiler.target>1.7</maven.compiler.target>
+</properties>
+</code>
+Ahora creamos el código java en esta ruta:
+  mkdir -p src/main/java/org/iwanttobefreak/post/
+El nombre del fichero .java, en este caso Main es la clase que declaramos en el código fuente
+  src/main/java/org/iwanttobefreak/post/Main.java
+<code>
+package org.iwanttobefreak.post;
+public class Main {
+  public static void main(String[] args) {
+    System.out.println("Hello world");
+  }
+}
+</code>
+Compilamos el paquete:
+  mvn package
+Nos crea el jar en el directorio target.
+Lo ejecutamos:
+  java -cp ./target/java-archive-1.0-SNAPSHOT.jar org.iwanttobefreak.post.Main
+  Hello world
+====== Proyecto WGET ======
+<code>
+package org.iwanttobefreak.post;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.URL;
+public class Main {
+        public static void main(String[] args) {
+                try {
+                        URL url = new URL("http://www.google.es/");
+                        BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
+                        String strTemp = "";
+                        while (null != (strTemp = br.readLine())) {
+                                System.out.println(strTemp);
+                        }
+                } catch (Exception ex) {
+                        ex.printStackTrace();
+                }
+        }
+}
+</code>
+====== Proyecto POST ======
+<code>
+package com.iwanttobefreak.post;
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import javax.net.ssl.HttpsURLConnection;
+public class HttpURLConnectionExample {
+	private final String USER_AGENT = "Mozilla/5.0";
+	public static void main(String[] args) throws Exception {
+		HttpURLConnectionExample http = new HttpURLConnectionExample();
+		System.out.println("\nTesting 2 - Send Http POST request");
+		http.sendPost();
+	}
+	// HTTP POST request
+	private void sendPost() throws Exception {
+		String url = "http://example.com/main.do";
+		URL obj = new URL(url);
+		HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
+		//add reuqest header
+		con.setRequestMethod("POST");
+		con.setRequestProperty("User-Agent", USER_AGENT);
+		con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
+                con.setRequestProperty("Content-Type", "application/json");
+                //Petición JSON si tiene comillas, las trampeamos con \
+		String urlParameters = "{\"DatosPersonales\":{\"Nombre\":\"Aitor\",\"Apellido\":\"Tillas\"},\"DatosFisicos\":{\"Ojos\":\"Azules\",\"Pelo\":\"Negro\"}}";
+		// Send post request
+		con.setDoOutput(true);
+		DataOutputStream wr = new DataOutputStream(con.getOutputStream());
+		wr.writeBytes(urlParameters);
+		wr.flush();
+		wr.close();
+		int responseCode = con.getResponseCode();
+		System.out.println("\nSending 'POST' request to URL : " + url);
+		System.out.println("Post parameters : " + urlParameters);
+		System.out.println("Response Code : " + responseCode);
+		BufferedReader in = new BufferedReader(
+		        new InputStreamReader(con.getInputStream()));
+		String inputLine;
+		StringBuffer response = new StringBuffer();
+		while ((inputLine = in.readLine()) != null) {
+			response.append(inputLine);
+		}
+		in.close();
+		//print result
+		System.out.println(response.toString());
+	}
+}
+</code>
+====== Proyecto Out Of Memory OOM ======
+<code>
+public class TestOOM
+{
+public static void main(String ar[])
+{
+String test[]=new String[Integer.MAX_VALUE];
+for(int i=0;i<Integer.MAX_VALUE;i++)
+{
+test[i]="AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+}
+}
+}
+</code>
 ====== Monitorizar con javamelody ======