RESTful Web Services with Java (JAX-RS) parse JSON (Jersey)

This example parse JSON in RESTful Web Services with  Java Using Jersey.
There are many way for parse JSON in restful web services. In this example  I have used jackson dependency(maven project) if you are not use maven project then you can use jackson jar for JSON parsing.


Step 1: create handle class and define path , method and response

UserHander.java

package com.javaproficiency.jerseydemo.demo;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import com.javaproficiency.jerseydemo.model.User;

@Path("/user")
public class UserHander {

    @POST
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_JSON)
    public Response addUser(User user) {
        System.out.println("user name"+user.getName());
        System.out.println("user city="+user.getCity());
        return Response.status(Status.OK).entity(user).build();
    }

}


Step 2:


User.java


package com.javaproficiency.jerseydemo.model;

public class User {

    private String name;
    private String city;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

}



Step 3: configure web.xml file as

web.xml


<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>JerseyDemo</display-name>
    <servlet>
        <servlet-name>RestServices</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.javaproficiency.jerseydemo.demo</param-value>
        </init-param>

        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>RestServices</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

Step 4: Add dependency in pom.xml file as bellow.

pom.xml


<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>InstagramPost</groupId>
    <artifactId>InstagramPost</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <groupId>com.craterzone.instagrampost</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

<dependencies>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-server</artifactId>
            <version>2.13</version>
        </dependency>
           
        <dependency>       
            <groupId>org.glassfish.jersey.containers</groupId>
            <!-- if your container implements Servlet API older than 3.0, use "jersey-container-servlet-core" -->
            <artifactId>jersey-container-servlet</artifactId>
            <version>2.13</version>
        </dependency>

        <dependency>
            <groupId>javax.ws.rs</groupId>
            <artifactId>javax.ws.rs-api</artifactId>
            <version>2.0</version>
        </dependency>


        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
            <scope>provided</scope>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
   
           <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-json-jackson</artifactId>
            <version>2.10.1</version>
        </dependency>
       
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.2</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-core-asl</artifactId>
            <version>1.9.2</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-servlet</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jdk-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-simple-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-servlet</artifactId>
            <version>2.16</version>
        </dependency>

    </dependencies>

</project>


Step 5:   Project Structure

                 

Step 6: Hit web service using rest console

url =http://localhost:8080/JerseyDemo/rest/user

json:

          {
                "name": "raja",
                 "city": "delhi"
          }

 Response:
                   {
                "name": "raja",
                 "city": "delhi"
                 }

RESTful Web Services with Java (JAX-RS) using POST Method

RESTful Web Services Using POST Method Using Jersey
 
If we are use POST method then need a client to run application . you have any client then ok.if you have not any idea about client then you first learn about client. There are many client postman,rest console etc. But I have use rest console client , for rest console client tutorial click here

So now i consider that you can use rest console client .

now follow these step for make a rest application using put method

Step 1: create handle class and define path , method and response.

UserHandler.java

package com.javaproficiency.jerseydemo.demo;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

@Path("/user")
public class UserHander {

/*
 Use @POST annotation here
    */
    @POST
    public Response getMessage(){
        String message="Jersey Hello";
        return Response.status(Status.OK).entity(message).build();
    }
   
}

Step  2. configure web.xml file as

web.xml

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>JerseyDemo</display-name>
    <servlet>
        <servlet-name>RestServices</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.javaproficiency.jerseydemo.demo</param-value>
        </init-param>

        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>RestServices</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

Step 3. Add dependency in pom.xml file as bellow.
pom.xml

<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>JerseyDemo</groupId>
    <artifactId>JerseyDemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-server</artifactId>
            <version>2.13</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
            <version>2.13</version>
        </dependency>

        <dependency>
            <groupId>javax.ws.rs</groupId>
            <artifactId>javax.ws.rs-api</artifactId>
            <version>2.0</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
            <scope>provided</scope>
            <version>2.16</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-servlet</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jdk-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-simple-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-servlet</artifactId>
            <version>2.16</version>
        </dependency>
    </dependencies>

</project>

Step 4:   Project Structure

 Step 5: Run Project and Hit url

How to decide url:

HostName:PortNumber/ProjectName/+Your Decide Path

Example:

http://localhost:8080/JerseyDemo/rest/user

   

                               

Output:

How To get Default Character set of Database And Table in mysql

 If you want to know your mysql database default character set then use this
 query

SELECT DEFAULT_CHARACTER_SET_NAME FROM information_schema.SCHEMATA S WHERE schema_name="DATABASE_NAME";

Output:

+----------------------------+
| DEFAULT_CHARACTER_SET_NAME |
+----------------------------+
| latin1                     |
+----------------------------+


Get Table database default character set using this query

 SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
    information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA WHERE CCSA.collation_name = T.table_collation AND T.table_schema = "DATABASE_NAME" AND T.table_name = "TABLE_NAME";

Output:

+--------------------+
| character_set_name |
+--------------------+
| latin1             |
+--------------------+

mysql tutorial for beginners

Get Default Character set of Database and Table in mysql 

 

Database

Table

Primary key

Linux Tutorial for Beginners

Importance command for Java developer

Basic commands
How to create file.
How to create folder.
how to change permissions.
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grep commands.
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sudo command
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 Software Instalation

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ellipse

Rest Console Tutorial for Beginners

How to install rest console and use it.


Step 1.
               Go to  Chrome Web Store and search rest console.

                 

Step 2.  Now search result for rest console and  Click on free button in front of rest console and add it .

Step 3. Open rest console


 

Step 4. Now  Request URL  Enter In Request URI  . I use URL= www.ariseter.com

You can also use it www.ariseter.com and Method GET

Step 5. Now Click On GET Button ,You will get result as

RESTful Web Services with Java (JAX-RS) using Jersey PUT Method Example

RESTful Web Services Using PUT Method Using Jersey
 
If we are use PUT method then need a client to run application . you have any client then ok.if you have not any idea about client then you first learn about client. There are many client postman,rest console etc. But I have use rest console client , for rest console client tutorial click here

So now i consider that you can use rest console client .

now follow these step for make a rest application using put method

Step 1: create handle class and define path , method and response.

UserHandler.java

package com.javaproficiency.jerseydemo.demo;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

@Path("/user")
public class UserHander {
 
/*
 Use @PUT annotation here
    */
    @PUT
    public Response getMessage(){
        String message="Jersey Hello";
        return Response.status(Status.OK).entity(message).build();
    }
   
}

Step  2. configure web.xml file as

web.xml

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>JerseyDemo</display-name>
    <servlet>
        <servlet-name>RestServices</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.javaproficiency.jerseydemo.demo</param-value>
        </init-param>

        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>RestServices</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

Step 3. Add dependency in pom.xml file as bellow.
pom.xml

<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>JerseyDemo</groupId>
    <artifactId>JerseyDemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-server</artifactId>
            <version>2.13</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
            <version>2.13</version>
        </dependency>

        <dependency>
            <groupId>javax.ws.rs</groupId>
            <artifactId>javax.ws.rs-api</artifactId>
            <version>2.0</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
            <scope>provided</scope>
            <version>2.16</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-grizzly2-servlet</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jdk-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-simple-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-http</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-servlet</artifactId>
            <version>2.16</version>
        </dependency>
    </dependencies>

</project>

Step 4:   Project Structure

 Step 5: Run Project and Hit url

How to decide url:

HostName:PortNumber/ProjectName/+Your Decide Path

Example:

http://localhost:8080/JerseyDemo/rest/user

   

                               

Output: