Spring

Below is the Spring WebFlux code to fetch the client Remote Address from the ServerExchange object. Say, we have a scenario wherein we have to check if the API request is coming from the authorized IP address list, in the web filter we will fetch the IP address of the client and will match with the set of given IP’s ... Read More »

In my last Spring WebFlux project, during the HTTP calls through WebClient, often I was not getting responses from the client. But when I tried by refreshing the page, the response was coming. There could be multiple reasons for not getting the proper response from the client, but I thought to implement retry options with WebClient. In the below, we ... Read More »

Recently in one of my Spring Webflux project, one requirement came to handle Exceptions at Global Level. So the question is why we need global handling of exception. The benefit of handling exception at global level is, we can maintain proper error code at one level, this way we will be avoiding duplicate codes inside our spring webflux REST API ... Read More »

What is CVE-2021-44228? CVE-2021-44228 is a vulnerability impacting all the applications written in Java and using the component Apache Log4j2 for logging. This vulnerability allows the unauthenticated remote code execution using the JNDI Lookup. Log4j2 is widely used directly or through dependencies in almost every Java application. These application includes almost all the enterprise level application and almost all the ... Read More »

Access logs contains the information about the request received and response sent to the client. It contains all the important data which are required to analyze the type of request coming to the application. Below are the steps which is required to configure the tomcat access logs for the Spring Boot application. Settings in application.properties file These are the common ... Read More »

In this article, we will learn how to configure custom favicon in the spring boot application. Favicon is the iconic representation of any website. It is placed in the address bar of any web browser. Spring boot provides option to create custom favicon for your website. First create a favicon for your website, place it in the resources directory of ... Read More »

In this article, we will learn how to configure logback in the spring boot application for logging and how to configure Logback with specifications including console and file output separately, and here we will also learn to use the rolling file policy to avoid generating large size log files and after a certain threshold size limit it will be back ... Read More »

Okhttp3 is a popular HTTP client implementation for Java and we can easily embed it in our Spring Boot RestTemplate abstraction. Below is the Bean definition which binds the instance of Okhttp3 client with RestTemplate. Now to integrate in our implementation class we just need to autowire the Resttemplate to use this customized Okhttp3 based resttemplate. How to use RestTemplate ... Read More »

In this post we will learn how to configure Spring RestTemplate with HttpClient in the Spring boot Applications. This example supports both HTTP and HTTPS. It Uses a connection-pool configurations to re-use connections and save overhead of creating connections. It has configurable request and socket timeouts, keep-alive strategy and also close idle connection strategy to monitor inactive connections and clean ... Read More »

In an Spring Boot project, sometimes we have to autowire components which are available in another jar or in another module which is added as a jar in the main module of the project. Considering the use case of my spring boot application, I created my Spring Boot project, using maven modules. One of the modules was called daolayer, one ... Read More »