iamvickyav

Different & important pieces of codes for File Upload in Spring MVC

/** Form Coding in JSP **/
<form action="upload" method="post" enctype="multipart/form-data">
		<input type="file" name="file" /> <input type="submit" value="submit" />
</form>

/** Code to handle file upload **/
@RequestMapping(value="/upload")
	public ModelAndView upload(@RequestParam("file") MultipartFile file,

iamvickyav

/** JSTL required **/

/** pom.xml **/
<dependency>
  <groupId>jstl</groupId>
	<artifactId>jstl</artifactId>
	<version>1.2</version>
</dependency>

/** In JSP file **/

iamvickyav

netstat -vanp tcp | grep 8080

kill -9 1234

https://stackoverflow.com/questions/46104140/kill-tomcat-service-running-on-any-port-mac-sierra?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

iamvickyav

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured [Fixed]

If you face this issue with Spring Cassandra, please remove the following dependency from your POM file

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

iamvickyav

How to Enable SSL in Tomcat & Spring Boot

Run ->

keytool -genkey -alias tomcat -storetype PKCS12 -keyalg RSA -keysize 2048 -keystore keystore.p12 -validity 3650

Add file in resources folder & do following changes in application.properties

iamvickyav

Add following dependency in classpath

<dependency>
	<groupId>com.fasterxml.jackson.dataformat</groupId>
	<artifactId>jackson-dataformat-xml</artifactId>
</dependency>

iamvickyav

public class StackImpl {

    private int[] ele

    private int MAX_SIZE

    private int top = -1

    int size(){
        top

iamvickyav

application-.properties

Environment variable -> spring.profiles.active

application.properties is always loaded, irrespective of the spring.profiles.active value. If there is the same key-value present both in application.properties and application-.properties, the latter will override the former.

iamvickyav

List<T> performRequest(ParameterizedTypeReference<List<T>> responseType) {
        return restTemplate.exchange("http://www.mocky.io/v2/5e4d66ff2d0000309ec0df14", 
              HttpMethod.GET, null, responseType).getBody();
}


performRequest(new ParameterizedTypeReference<List<User>>() {});

iamvickyav

version: '3'

services:
  app:
    build: .
    image: test-img
    ports:
      - 8080:8080