Differences

This shows you the differences between two versions of the page.

--- informatica:linux:java:maven [2016/06/28 12:54] – jose
+++ informatica:linux:java:maven [2017/07/26 11:49] (current) – [Proyecto POST] jose
@@ Line 44: / Line 44: @@
  <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>
@@ Line 49: / Line 57: @@
   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>
@@ Line 95: / Line 105: @@
 <code>
-package org.iwanttobefreak.post;
+package com.iwanttobefreak.post;
-import java.io.*;
+import java.io.BufferedReader;
-import java.net.*;
+import java.io.DataOutputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
-public class Main {
+import javax.net.ssl.HttpsURLConnection;
-        public static void main(String[] args) throws IOException {
-String url = "https://www.google.es/search";
-String charset = "UTF-8";
-String q = "hola";
-String query = String.format("q=%s",URLEncoder.encode(q, charset));
+public class HttpURLConnectionExample {
-//URLConnection connection = new URL(url).openConnection();
+	private final String USER_AGENT = "Mozilla/5.0";
-URLConnection connection = new URL(url + "?" + query).openConnection();
-connection.setDoOutput(true);
+	public static void main(String[] args) throws Exception {
-connection.setRequestProperty("Accept-Charset", charset);
-connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + charset);
-                try (OutputStream output = connection.getOutputStream()) {
+		HttpURLConnectionExample http = new HttpURLConnectionExample();
-                        output.write(query.getBytes(charset));
-                        }catch(IOException ioe){
+		System.out.println("\nTesting 2 - Send Http POST request");
-                        ioe.printStackTrace();
+		http.sendPost();
-                        //return null;
-                        }
+	}
-                InputStream response = connection.getInputStream();
-        }
+	// 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 ======