add server side code

add server side code

android-post-json/server-side-code/src/META-INF/jdoconfig.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<jdoconfig xmlns="http://java.sun.com/xml/ns/jdo/jdoconfig"
+   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+   xsi:noNamespaceSchemaLocation="http://java.sun.com/xml/ns/jdo/jdoconfig">
+
+   <persistence-manager-factory name="transactions-optional">
+       <property name="javax.jdo.PersistenceManagerFactoryClass"
+           value="org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory"/>
+       <property name="javax.jdo.option.ConnectionURL" value="appengine"/>
+       <property name="javax.jdo.option.NontransactionalRead" value="true"/>
+       <property name="javax.jdo.option.NontransactionalWrite" value="true"/>
+       <property name="javax.jdo.option.RetainValues" value="true"/>
+       <property name="datanucleus.appengine.autoCreateDatastoreTxns" value="true"/>
+   </persistence-manager-factory>
+</jdoconfig>

android-post-json/server-side-code/src/com/hmkcode/servlet/JSONServlet.java

@@ -0,0 +1,71 @@
+package com.hmkcode.servlet;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.LinkedList;
+import java.util.List;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+ 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.hmkcode.vo.Person;
+
+public class JSONServlet extends HttpServlet {
+	
+	private static final long serialVersionUID = 1L;
+
+	// This will store all received articles
+	List<Person> persons = new LinkedList<Person>();
+	 
+	/***************************************************
+	 * URL: /jsonservlet
+	 * doPost(): receives JSON data, parse it, map it and send back as JSON
+	 ****************************************************/
+	protected void doPost(HttpServletRequest request, HttpServletResponse response)
+	        throws ServletException, IOException{
+	    
+		// 1. get received JSON data from request
+		BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
+		String json = "";
+		if(br != null){
+			json = br.readLine();
+		}
+		
+		// 2. initiate jackson mapper
+    	ObjectMapper mapper = new ObjectMapper();
+    	
+    	// 3. Convert received JSON to Article
+    	Person person = mapper.readValue(json, Person.class);
+
+		// 4. Set response type to JSON
+		response.setContentType("application/json");		    
+    	
+    	// 5. Add article to List<Article>
+		if(persons.size() > 20)
+			persons.remove(0);
+		
+		persons.add(person);
+
+		// 6. Send List<Article> as JSON to client
+    	mapper.writeValue(response.getOutputStream(), persons);
+	}
+	
+	@Override
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+			throws ServletException, IOException {
+    	
+		//2. initiate jackson mapper
+		ObjectMapper mapper = new ObjectMapper();
+		
+
+		// 4. Set response type to JSON
+		resp.setContentType("application/json");		    
+    	
+
+		// 6. Send List<Article> as JSON to client
+    	mapper.writeValue(resp.getOutputStream(), persons);
+	}
+}

android-post-json/server-side-code/src/com/hmkcode/vo/Person.java

@@ -0,0 +1,40 @@
+package com.hmkcode.vo;
+
+public class Person {
+
+	private String name;
+	private String country;
+	private String twitter;
+	
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getCountry() {
+		return country;
+	}
+
+	public void setCountry(String country) {
+		this.country = country;
+	}
+
+	public String getTwitter() {
+		return twitter;
+	}
+
+	public void setTwitter(String twitter) {
+		this.twitter = twitter;
+	}
+
+	@Override
+	public String toString() {
+		return "Person [name=" + name + ", country=" + country + ", twitter="
+				+ twitter + "]";
+	}
+	
+	
+}

android-post-json/server-side-code/src/log4j.properties

@@ -0,0 +1,24 @@
+# A default log4j configuration for log4j users.
+#
+# To use this configuration, deploy it into your application's WEB-INF/classes
+# directory.  You are also encouraged to edit it as you like.
+
+# Configure the console as our one appender
+log4j.appender.A1=org.apache.log4j.ConsoleAppender
+log4j.appender.A1.layout=org.apache.log4j.PatternLayout
+log4j.appender.A1.layout.ConversionPattern=%d{HH:mm:ss,SSS} %-5p [%c] - %m%n
+
+# tighten logging on the DataNucleus Categories
+log4j.category.DataNucleus.JDO=WARN, A1
+log4j.category.DataNucleus.Persistence=WARN, A1
+log4j.category.DataNucleus.Cache=WARN, A1
+log4j.category.DataNucleus.MetaData=WARN, A1
+log4j.category.DataNucleus.General=WARN, A1
+log4j.category.DataNucleus.Utility=WARN, A1
+log4j.category.DataNucleus.Transaction=WARN, A1
+log4j.category.DataNucleus.Datastore=WARN, A1
+log4j.category.DataNucleus.ClassLoading=WARN, A1
+log4j.category.DataNucleus.Plugin=WARN, A1
+log4j.category.DataNucleus.ValueGeneration=WARN, A1
+log4j.category.DataNucleus.Enhancer=WARN, A1
+log4j.category.DataNucleus.SchemaTool=WARN, A1

android-post-json/server-side-code/war/WEB-INF/web.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
+  <display-name>SpringMVC</display-name>
+  <welcome-file-list>
+    <welcome-file>index.html</welcome-file>
+  </welcome-file-list>
+ 
+  <servlet>
+  	<servlet-name>jsonservlet</servlet-name>            
+  	<servlet-class>com.hmkcode.servlet.JSONServlet</servlet-class>
+  </servlet>
+ 
+  <servlet-mapping>
+  	<servlet-name>jsonservlet</servlet-name>
+  	<url-pattern>/jsonservlet</url-pattern>
+  </servlet-mapping>
+</web-app>

android-post-json/server-side-code/war/index.html

@@ -0,0 +1,31 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>Spring MVC - View (JSON, XML, PDF, Excel)</title>
+  	<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
+  	
+<style type="text/css">
+.style1 {
+				color: #C0C0C0;
+				font-family: Tahoma;
+				font-size:11px;
+}
+</style>
+
+</head>
+
+<body>
+<a href="http://hmkcode.com"><h1>hmkcode.com</h1></a>
+<p class="style1"><em>The data in this demo is hard-coded in a Java class not as 
+mentioned in the article in xml file since GAE is not allowing reading file.</em></p>
+<h1>Spring MVC - View (JSON, XML, PDF, Excel)</h1>
+<div style="margin:10px;width:700px;text-align:center">    
+	<a href="rest/controller/get.json" class="label label-info">JSON</a>
+	<a href="rest/controller/get.xml" class="label label-info">XML</a>
+	<a href="rest/controller/get.pdf" class="label label-info">PDF</a>
+	<a href="rest/controller/get.xlsx" class="label label-info">Excel</a>
+</div>
+
+</body>
+</html>

android-post-json/server-side-code/war/post-json/index.html

@@ -0,0 +1,43 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Java Servlet JSON</title>
+<script src="./js/jquery.1.9.1.min.js"></script>
+
+<!-- bootstrap just to have good looking page -->
+<link href="./bootstrap/css/bootstrap.css" type="text/css" rel="stylesheet" />
+
+<!-- we code these -->
+<script src="./js/myfunctions.js"></script>
+
+
+</head>
+
+<body>
+	<h1 style="text-align:center"><a href="http://hmkcode.com">HMKCode.com</a></h1>
+	<h1 style="text-align:center">Java Servlet that Receives POST Request with JSON Data<br></h1> 
+	
+	<div id="alert" class="alert alert-warning" style="width:200px;display:none">
+		<b>Warning!</b> Invalid input. 
+	</div>
+	<!-- article inputs -->
+	<div class="article" style="margin:10px;text-align:center">
+		<p>
+			<button class="btn btn-primary" type="button" onclick="getAjax()">Refresh</button>
+		</p>
+	</div>
+	
+	<!-- display all articles -->
+	<div style="width:700px;padding:20px">
+		<h5 style="text-align:center"><i style="color:#ccc"><small>Visitors</small></i></h5>
+		<table id="added-articles" class="table" >
+			<tr>
+				<th>Name</th>
+				<th>Country</th>
+				<th>Twitter</th>
+			</tr>
+		</table>
+	</div>
+</body> 
+</html>

android-post-json/server-side-code/war/post-json/js/myfunctions.js

@@ -0,0 +1,77 @@
+function sendAjax() {
+	$("#alert").css("display","none");
+	if($.trim($('#name').val()).length == 0){
+		$("#alert").css("display","block");
+		return;
+	}
+	// get inputs
+	var person = new Object();
+	person.name = $('#name').val();
+	person.country = $('#country').val();
+	person.twitter = $('#twitter').val();
+	
+	$.ajax({
+		url: "/jsonservlet",
+		type: 'POST',
+		dataType: 'json',
+		data: JSON.stringify(person),
+		contentType: 'application/json',
+		mimeType: 'application/json',
+		
+		success: function (data) {
+			$("tr:has(td)").remove();
+
+			$.each(data, function (index, person) {
+		    	
+		        if(person.name.length > 0 )		         
+		        $("#added-articles").append($('<tr/>')
+		        		.append($("<td/>").append($("<span class='label label-default' style='margin:4px;padding:4px'/>").text(person.name)))
+		        		.append($("<td/>").append($("<span class='label label-success' style='margin:4px;padding:4px'/>").text(person.country)))
+		        		.append($("<td/>").append($("<span class='label label-info' style='margin:4px;padding:4px'/>").text(person.twitter)))
+
+		        );
+		    
+		        
+		    }); 
+		},
+		error:function(data,status,er) {
+			alert("error: "+data+" status: "+status+" er:"+er);
+		}
+	});
+}
+//--------------------------------------
+function getAjax() {
+	 
+	$("#alert").css("display","none");
+
+	
+	$.ajax({
+		url: "/jsonservlet",
+		type: 'GET',
+		dataType: 'json',
+		contentType: 'application/json',
+		mimeType: 'application/json',
+		
+		success: function (data) {
+			$("tr:has(td)").remove();
+
+			$.each(data, function (index, person) {
+		    	
+		       
+		        $("#added-articles").append($('<tr/>')
+		        		.append($("<td/>").append($("<span class='label label-default' style='margin:4px;padding:4px'/>").text(person.name)))
+		        		.append($("<td/>").append($("<span class='label label-success' style='margin:4px;padding:4px'/>").text(person.country)))
+		        		.append($("<td/>").append($("<span class='label label-info' style='margin:4px;padding:4px'/>").text(person.twitter)))
+
+		        );
+		    
+		        
+		    }); 
+		},
+		error:function(data,status,er) {
+			alert("error: "+data+" status: "+status+" er:"+er);
+		}
+	});
+}
+
+//--------------------------------------