Adding the original version from the blog.

pom.xml

@@ -0,0 +1,62 @@
+<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>
+
+    <groupId>de.lusiardi</groupId>
+    <artifactId>webbasics1</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>war</packaging>
+
+    <name>Java Webprogrammierung mit Spring und Maven (Teil 3)</name>
+    <prerequisites>
+        <maven>3.0</maven>
+    </prerequisites>
+    <properties>
+        <project.build.sourceEncoding>
+            UTF-8
+        </project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+            <version>3.2.4.RELEASE</version>
+            <type>jar</type>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>3.1.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <!--
+            For jason mapping
+        -->
+        <dependency>
+            <groupId>org.codehaus.jackson</groupId>
+            <artifactId>jackson-mapper-asl</artifactId>
+            <version>1.9.12</version>
+            <type>jar</type>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.1</version>
+                <configuration>
+                    <source>1.6</source>
+                    <target>1.6</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

src/main/java/de/lusiardi/testprojekt/controller/RestController.java

@@ -0,0 +1,76 @@
+package de.lusiardi.testprojekt.controller;
+
+import de.lusiardi.testprojekt.dto.PersonCreateDto;
+import de.lusiardi.testprojekt.dto.PersonDto;
+import de.lusiardi.testprojekt.exceptions.ResourceNotFoundException;
+import java.util.ArrayList;
+import java.util.List;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+
+@Controller
+public class RestController {
+    
+    private List<PersonDto> persons = new ArrayList<PersonDto>();
+    
+    @RequestMapping(value = "persons", method = RequestMethod.GET)
+    @ResponseBody
+    public List<PersonDto> getPersons() {
+        return persons;
+    }
+    
+    @RequestMapping(value = "persons", method = RequestMethod.POST)
+    @ResponseBody
+    @ResponseStatus(HttpStatus.CREATED)
+    public PersonDto createPerson(@RequestBody PersonCreateDto in) {
+        PersonDto person = new PersonDto(in.getName(), in.getEmail());
+        persons.add(person);
+        return person;
+    }
+    
+    @RequestMapping(value = "persons/{id}", method = RequestMethod.GET)
+    @ResponseBody
+    public PersonDto getPerson(@PathVariable(value = "id") int id) {
+        for (PersonDto person : persons) {
+            if (id == person.getId()) {
+                return person;
+            }
+        }
+        throw new ResourceNotFoundException();
+    }
+    
+    @RequestMapping(value = "persons/{id}", method = RequestMethod.DELETE)
+    @ResponseBody
+    public boolean deletePerson(@PathVariable(value = "id") int id) {
+        PersonDto toDelete = null;
+        for (PersonDto person : persons) {
+            if (id == person.getId()) {
+                toDelete = person;
+            }
+        }
+        if (toDelete != null) {
+            return persons.remove(toDelete);
+        } else {
+            throw new ResourceNotFoundException();
+        }
+    }
+    
+    @RequestMapping(value = "persons/{id}", method = RequestMethod.PUT)
+    @ResponseBody
+    public PersonDto updatePerson(@PathVariable(value = "id") int id, @RequestBody PersonCreateDto in) {
+        PersonDto toUpdate = null;
+        for (PersonDto person : persons) {
+            if (id == person.getId()) {
+                toUpdate = person;
+            }
+        }
+        if (toUpdate != null) {
+            toUpdate.setEmail(in.getEmail());
+            toUpdate.setName(in.getName());
+            return toUpdate;
+        } else {
+            throw new ResourceNotFoundException();
+        }
+    }
+}

src/main/java/de/lusiardi/testprojekt/dto/PersonCreateDto.java

@@ -0,0 +1,66 @@
+package de.lusiardi.testprojekt.dto;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement // for jaxb 
+public class PersonCreateDto {
+
+    private String name;
+    private String email;
+
+    /*
+     * de.lusiardi.testprojekt.dto.TestDto does not have a no-arg default 
+     * constructor. this problem is related to the following location: 
+     * at de.lusiardi.testprojekt.dto.TestDto
+     */
+    public PersonCreateDto() {
+    }
+
+    public PersonCreateDto(String name, String email) {
+        this.name = name;
+        this.email = email;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String foo) {
+        this.name = foo;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 3;
+        hash = 37 * hash + (this.name != null ? this.name.hashCode() : 0);
+        hash = 37 * hash + (this.email != null ? this.email.hashCode() : 0);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final PersonCreateDto other = (PersonCreateDto) obj;
+        if ((this.name == null) ? (other.name != null) : !this.name.equals(other.name)) {
+            return false;
+        }
+        if ((this.email == null) ? (other.email != null) : !this.email.equals(other.email)) {
+            return false;
+        }
+        return true;
+    }
+
+}

src/main/java/de/lusiardi/testprojekt/dto/PersonDto.java

@@ -0,0 +1,75 @@
+package de.lusiardi.testprojekt.dto;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement // for jaxb 
+public class PersonDto {
+
+    private static int idCounter = 0;
+    private int id;
+    private String name;
+    private String email;
+
+    /*
+     * de.lusiardi.testprojekt.dto.TestDto does not have a no-arg default 
+     * constructor. this problem is related to the following location: 
+     * at de.lusiardi.testprojekt.dto.TestDto
+     */
+    public PersonDto() {
+    }
+
+    public PersonDto(String name, String email) {
+        this.id = idCounter;
+        idCounter++;
+        this.name = name;
+        this.email = email;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String foo) {
+        this.name = foo;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 7;
+        hash = 59 * hash + this.id;
+        hash = 59 * hash + (this.name != null ? this.name.hashCode() : 0);
+        hash = 59 * hash + (this.email != null ? this.email.hashCode() : 0);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final PersonDto other = (PersonDto) obj;
+        if (this.id != other.id) {
+            return false;
+        }
+        return true;
+    }
+}

src/main/java/de/lusiardi/testprojekt/exceptions/ResourceNotFoundException.java

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+package de.lusiardi.testprojekt.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+/**
+ * This Exception will be mapped to a 404 result. Reason will be written on the
+ * exeption page.
+ */
+@ResponseStatus(value = HttpStatus.NOT_FOUND, reason = "Some static reason")
+public class ResourceNotFoundException extends RuntimeException {
+}

src/main/webapp/META-INF/context.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<Context path="/WebBasics3"/>

src/main/webapp/WEB-INF/spring-servlet.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:mvc="http://www.springframework.org/schema/mvc"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
+       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
+       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
+
+    <!--
+        beans für das mapping von json und xml
+    -->
+    <bean id="jacksonMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
+    <bean id="jaxbMessageConverter" class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter" />
+    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
+        <property name="messageConverters">
+            <list>
+                <ref bean="jacksonMessageConverter"/>
+                <ref bean="jaxbMessageConverter"/>
+            </list>
+        </property>
+    </bean>
+
+    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
+    
+    <context:component-scan base-package="de.lusiardi.testprojekt" />
+    
+    <mvc:annotation-driven />
+
+</beans>

src/main/webapp/WEB-INF/web.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<web-app version="3.0" 
+         xmlns="http://java.sun.com/xml/ns/javaee" 
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
+        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
+
+    <display-name>WebBasics3</display-name>
+
+    <welcome-file-list>
+        <welcome-file>index.jsp</welcome-file>
+    </welcome-file-list>   
+
+    <servlet>
+        <servlet-name>spring</servlet-name>
+        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+        <load-on-startup>1</load-on-startup>
+    </servlet>
+
+    <!--
+        all restfull urls go here
+    -->
+    <servlet-mapping>
+        <servlet-name>spring</servlet-name>
+        <url-pattern>/rest/*</url-pattern>
+    </servlet-mapping>
+
+</web-app>

src/main/webapp/index.jsp

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+<%@page contentType="text/html" pageEncoding="UTF-8"%>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+    "http://www.w3.org/TR/html4/loose.dtd">
+
+<html>
+    <head>
+        <title>REST Service</title>
+    </head>
+    <body>
+        <h1>REST Service</h1>
+    </body>
+</html>