Gson Test

pom.xml

<?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>gson-play</groupId>
    <artifactId>gson-play</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
        </dependency>
    </dependencies>

</project>

TestGsonAndServlet.java

import com.google.gson.Gson;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;

/**
 * Created by dcheung on 2/25/15.
 */
public class GsonPlay {
    public static void main(String[] args) {
        Gson gson = new Gson();
        String[] strings = {"abc", "def", "ghi"};
        HashMap<String, String> test = new HashMap<String, String>();
        test.put("test", "hello");
        test.put("boo", "pie");
        System.out.println(gson.toJson(test));
    }

    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
            throws ServletException, IOException {
        Gson gson = new Gson();
        String[] strings = {"abc", "def", "ghi"};
        // Set response content type
        response.setContentType("application/json");

        // Actual logic goes here.
        PrintWriter out = response.getWriter();
        out.println(gson.toJson(strings));
    }
}

web.xml

<servlet>
    <servlet-name>GsonTest</servlet-name>
    <servlet-class>ca.utoronto.GsonTest</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>GsonTest</servlet-name>
    <url-pattern>/getGsonData</url-pattern>
</servlet-mapping>