Added lesson 34 - Spring MVC

Lesson34/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

Lesson34/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>quote</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

Lesson34/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.source=1.8

Lesson34/.settings/org.eclipse.m2e.core.prefs

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+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

Lesson34/pom.xml

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+<?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>
+
+    <groupId>lesson34</groupId>
+    <artifactId>quote</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>war</packaging>
+
+    <name>quote</name>
+    <url>http://maven.apache.org</url>
+
+    <properties>
+        <java.version>1.6</java.version>
+        <spring.version>3.1.0.RELEASE</spring.version>
+        <cglib.version>2.2.2</cglib.version>
+    </properties>
+
+    <dependencies>
+        <!-- Spring core & mvc -->
+
+        <!-- CGLib for @Configuration -->
+
+
+        <!-- Servlet Spec -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>4.0.6.RELEASE</version>
+            <type>jar</type>
+            <exclusions>
+                <exclusion>
+                    <groupId>commons-logging</groupId>
+                    <artifactId>commons-logging</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+            <version>4.0.6.RELEASE</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>aopalliance</groupId>
+                    <artifactId>aopalliance</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>commons-logging</groupId>
+            <artifactId>commons-logging</artifactId>
+            <version>1.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>4.0.6.RELEASE</version>
+            <type>jar</type>
+        </dependency>
+        <dependency>
+            <groupId>javax</groupId>
+            <artifactId>javaee-api</artifactId>
+            <version>7.0</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>javax.activation</groupId>
+                    <artifactId>activation</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+    </dependencies>
+
+    <repositories>
+        <repository>
+            <id>springsource-milestones</id>
+            <name>SpringSource Milestones Proxy</name>
+            <url>https://oss.sonatype.org/content/repositories/springsource-milestones</url>
+        </repository>
+    </repositories>
+
+    <build>
+        <finalName>quote</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>2.0.2</version>
+                <configuration>
+                    <failOnMissingWebXml>false</failOnMissingWebXml>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-war-plugin</artifactId>
+                <version>2.3</version>
+                <configuration>
+                    <failOnMissingWebXml>false</failOnMissingWebXml>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

Lesson34/src/main/java/lesson34/Stock.java

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+package lesson34;
+public class Stock {
+
+    public Stock(String symbol, String quote) {
+        this.symbol = symbol;
+        this.quote = quote;
+    }
+    private String symbol;
+    private String quote;
+
+    public String getSymbol() {
+        return symbol;
+    }
+
+    public void setSymbol(String symbol) {
+        this.symbol = symbol;
+    }
+
+    public String getQuote() {
+        return quote;
+    }
+
+    public void setQuote(String quote) {
+        this.quote = quote;
+    }
+}

Lesson34/src/main/java/lesson34/StockQuoteService.java

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+package lesson34;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.StringTokenizer;
+import java.util.concurrent.Future;
+
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.scheduling.annotation.AsyncResult;
+import org.springframework.stereotype.Service;
+
+@Service
+public class StockQuoteService {
+
+	@Async
+    public Future<Stock> getStockQuote(String symbol) throws InterruptedException {
+        InputStream stream = null;
+        try {
+            stream = new URL("http://quote.yahoo.com/d/quotes.csv?s=" 
+                    + symbol + "&f=sl1d1t1c1ohgv&e=.csv").openStream();
+        } catch (IOException ioe) {
+            ioe.printStackTrace();
+        }
+        String ticker = null, price = null;
+        try (InputStreamReader inStream = new InputStreamReader(stream);
+                BufferedReader buff = new BufferedReader(inStream);) {
+            String csvString = buff.readLine();
+            StringTokenizer tokenizer = new StringTokenizer(csvString, ",");
+            ticker = tokenizer.nextToken();
+            price = tokenizer.nextToken();
+        } catch (MalformedURLException e) {
+            System.out.println("Please check the spelling of the URL: " + e.toString());
+        } catch (IOException e1) {
+            System.out.println("Can't read from the Internet: " + e1.toString());
+        } finally {
+            return new AsyncResult<>(new Stock(ticker, price));
+        }
+    }
+}

Lesson34/src/main/java/lesson34/config/Config.java

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+package lesson34.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.ViewResolver;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
+
+@Configuration
+@ComponentScan(basePackages="lesson34")
+@EnableWebMvc
+public class Config extends WebMvcConfigurerAdapter{
+
+	@Bean
+	public ViewResolver getViewResolver(){
+		InternalResourceViewResolver resolver = new InternalResourceViewResolver();
+		resolver.setPrefix("/WEB-INF/views/");
+		resolver.setSuffix(".jsp");
+		return resolver;
+	}
+
+	@Override
+	public void addResourceHandlers(ResourceHandlerRegistry registry) {
+		registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
+	}
+
+
+}

Lesson34/src/main/java/lesson34/controller/Controller.java

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+package lesson34.controller;
+
+import lesson34.*;
+import java.io.IOException;
+import java.util.concurrent.ExecutionException;
+import javax.servlet.http.HttpServletResponse;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.ModelAndView;
+
+@RestController
+public class Controller {
+    	@RequestMapping(value="/", method = RequestMethod.GET)
+	public ModelAndView rootView(HttpServletResponse response) throws IOException{
+            return new ModelAndView("home");
+	}
+	@RequestMapping(value="/quote", method = RequestMethod.GET)
+	public @ResponseBody Stock rootView(@RequestParam(value = "symbol", required = false) String symbol, HttpServletResponse response) throws IOException, InterruptedException, ExecutionException{
+            return new StockQuoteService().getStockQuote(symbol).get();
+	}
+}

Lesson34/src/main/java/lesson34/init/Initializer.java

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+package lesson34.init;
+
+import lesson34.config.*;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRegistration;
+import org.springframework.web.WebApplicationInitializer;
+import org.springframework.web.context.ContextLoaderListener;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.servlet.DispatcherServlet;
+
+public class Initializer implements WebApplicationInitializer {
+    @Override
+    public void onStartup(ServletContext servletContext) throws ServletException {
+        WebApplicationContext webAppContext = getContext();
+        servletContext.addListener(new ContextLoaderListener(webAppContext));
+        ServletRegistration.Dynamic dispatcher = servletContext.addServlet("stockquote", new DispatcherServlet(webAppContext));
+        dispatcher.setLoadOnStartup(1);
+        dispatcher.addMapping("/");
+    }
+
+    private AnnotationConfigWebApplicationContext getContext() {
+        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
+        context.register(Config.class);
+        return context;
+    }
+
+}

Lesson34/src/main/webapp/WEB-INF/views/home.jsp

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+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Start Page</title>
+        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
+        <script>
+            var getQuote = function() {
+                var element = document.getElementsByName('symbol')[0];
+                var symbol = element.value;
+                $.ajax({
+                    type: "GET",
+                    url:  "/quote/quote",
+                    contentType: "application/json; charset=utf-8",
+                    data: "symbol=" + symbol,
+                    dataType: 'json',
+                    async: true,
+                    success: function(quote) {
+                        $('.stockSymbol').text("Symbol : " + quote.symbol);
+                        $('.stockQuote').text("Quote : " + quote.quote);
+                    }
+                });
+        }  
+        </script>
+    </head>
+    <body>
+        <h1>Please input Symbol (e.g. MSFT, AMZN)</h1>
+        <input type="text" name="symbol"/>
+        <input type="submit" name="submit" value="Request stock price" onclick="getQuote();"/>
+        <div class="stockSymbol"></div>
+        <div class="stockQuote"></div>
+    </body>
+</html>

Lesson35/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>