Logging to database using java logging framework

This post explains how to log messages to the database. Create a table with below schema CREATE TABLE logging ( loggername VARCHAR(50) NULL DEFAULT NULL, threadId INT(11) NULL DEFAULT NULL, loglevel VARCHAR(50) NULL DEFAULT NULL, logmessage VARCHAR(50) NULL DEFAULT NULL ) Create a custom handler which will log the message to the database. In our… Continue reading Logging to database using java logging framework

Deserialization of java objects from JSON

This post explains de-serialization of java objects to JSON using new Java JSONB api. We need the following jars to run the below example 1) javax.json-1.1.jar 2) jsonb-api-1.0.0.jar 3) yasson-1.0.jar yasson-1.0.jar is reference implemenation which can be obtained from the below link http://json-b.net/download.html In this example we will de-serialize the Person object, below is the… Continue reading Deserialization of java objects from JSON

Serialization of Java objects to JSON

This post explains serialization of java objects to JSON using new Java JSONB api. We need the following jars to run the below example 1) javax.json-1.1.jar 2) jsonb-api-1.0.0.jar 3) yasson-1.0.jar yasson-1.0.jar is reference implemenation which can be obtained from the below link http://json-b.net/download.html In this example we will serialize the Person object, below is the… Continue reading Serialization of Java objects to JSON

Retrieving url template parameters in JAX-RS annotated method

In JAX-RS, we can create url templates in the format as shown below http://localhost:8080/JAXRSConcepts/myresources/webresource4/retrieveRecord1/ {parameter_name} where anything between ‘{‘ and ‘}’ acts as places where we can provide parameters when creating the actual url. The name between ‘{‘ and ‘}’ in url template will act as the parameter name. In the actual url the text… Continue reading Retrieving url template parameters in JAX-RS annotated method

Retrieving header parameters in JAX-RS annotated method

The post explains different ways of retrieving header parameters in JAX-RS annotated method. Below is the complete code 1 package resource; 2 3 import javax.ws.rs.GET; 4 import javax.ws.rs.HeaderParam; 5 import javax.ws.rs.Path; 6 import javax.ws.rs.core.Context; 7 import javax.ws.rs.core.HttpHeaders; 8 import javax.ws.rs.core.MediaType; 9 import javax.ws.rs.core.Response; 10 11 @Path(“webresource3”) 12 public class WebResource3 { 13 @GET 14 @Path(“headerParameters1”)… Continue reading Retrieving header parameters in JAX-RS annotated method

Retrieving query parameters in JAX-RS annotated method

The post explains different ways of retrieving query parameters in JAX-RS annotated method. Below is the complete code 1 package resource; 2 3 import javax.ws.rs.GET; 4 import javax.ws.rs.Path; 5 import javax.ws.rs.QueryParam; 6 import javax.ws.rs.core.Context; 7 import javax.ws.rs.core.MediaType; 8 import javax.ws.rs.core.Response; 9 import javax.ws.rs.core.UriInfo; 10 11 @Path(“webresource2”) 12 public class WebResource2 { 13 @GET 14 @Path(“queryParameters1”)… Continue reading Retrieving query parameters in JAX-RS annotated method