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how to solve Error in importing persistence in intellij, springboot?

I am new to spring-boot and IntelliJ, I am facing an error while using #Entity annotation in my .java file. I am unable to import javax.persistence.Entity
My pom.xml file is
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.examly</groupId>
<artifactId>springapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springapp</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
and error in my .java file is :
user.java
I have also added "spring-boot-starter-data-jpa" dependency, but my error was not resolved, Anyone please help me with this, thank you.

Cannot resolve spring annotations in intellij idea

I downloaded jdk 11, and maven 3.6.3 and Itellj Idea and Import a project:
mvn clean install
But I always get this error:
Cannot resolve symbol 'SpringBootApplication'
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>
<parent>
<groupId>com.xxx.xxx.sofa</groupId>
<artifactId>sofa-spring-boot-pom-parent</artifactId>
<version>1.0.10</version>
</parent>
<properties>
<java.version>11</java.version>
<spring-boot.version>2.3.2.RELEASE</spring-boot.version>
<postgres.version>42.2.14</postgres.version>
<h2.version>1.4.200</h2.version>
<swagger.version>2.9.2</swagger.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>${swagger.version}</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>${swagger.version}</version>
</dependency>
<!-- DATABASE -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<!-- OPTIONAL TOOLS -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I tried to delete the .idea folder or "invalid cache and restart" but nor the first neither the second approach fixed the problem.
There is a similar question Cannot resolve symbol SpringApplication but the answer didn't resolve my issue. how can I fix that?

Running the following command solved for me this issue :
mvn idea:idea

I fixed this issue by downgrading the maven version.

you seem to use Spring Boot version 1.0.1, #SpringBootApplication annotation was introduced in 1.2

You are not using SpringBoot parent but your own, you need to add dependency:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>

you need to add dependency
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

Cannot resolve commons-collections:commons-collections:2.1

I have an issue when i try to fix my code. I keep getting issue when I reload maven/reimport maven
Cannot resolve commons-collections:commons-collections:2.1
When I open Maven I see in the folder in Dependencies an error starts in commons-validator:commons-validator:1.3.1
Here my 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0.RELEASE</version>
<relativePath />
<!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demoSpring</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demoSpring</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-core</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-validation -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/org.assertj/assertj-core -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>3.16.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>demoSpring</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>commons-validator</groupId>
<artifactId>commons-validator</artifactId>
<version>1.3.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
take a look and see how I can fix this.
Cannot resolve commons-collections:commons-collections:2.1
Cannot resolve org.apache.commons:commons-collections4:4.4
Cannot resolve commons-digester:commons-digester:1.6
Cannot resolve xml-apis:xml-apis:1.0.b2
Cannot resolve commons-logging:commons-logging:1.0.4

The error is "Cannot resolve commons-collections:commons-collections:2.1"
It has nothing to do with "commons-validator" dependency.
The commons collection artifact has moved to a different location in maven artifactory.
Please check this out
https://mvnrepository.com/artifact/org.apache.commons/commons-collections4

try to change version of your package, but better find dependency in https://mvnrepository.com/ which you need, copy this text and try to reimport.

Spring boot, XML have "Unknown" error on POM.xml [duplicate]

This question already has answers here:
Why am I getting Unknown error in line 1 of pom.xml?
(21 answers)
Closed 3 years ago.
Pretty straight forward, I'm having an issue with my POM.xml file.
This is my pom.xml file.
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.wadecrm</groupId>
<artifactId>wadecrm</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>wadecrm</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- Use MySQL Connector-J -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Here is a image (See in "Problems", path -> /wadecrm
This is the image

Go to STS or eclipse marketplace and install https://download.eclipse.org/m2e-wtp/releases/1.4/
Install m2e connector and clean and install then it will work.

Wss4jSecurityInterceptor on Spring boot

Eclipse is complaining that it cannot find Wss4jSecurityInterceptor when I'm trying to wire it up in my Spring Boot configuration (it's not available for importing):
#Bean public Wss4jSecurityInterceptor wss4jSecurityInterceptor(){...}
Here's the relevant extract from the pom.xml file:
<?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>com.abc</groupId>
<artifactId>abc-connectivity-boot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>abc-connectivity-boot</name>
<description>FFM Connectivity via Digested UserNameToken</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.5.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-ws</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-test</artifactId>
<version>2.2.1.RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-log4j</artifactId>
</dependency> -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5</version>
<scope>provided</scope>
</dependency>
</dependencies>
What am I missing?
Thank you in advance.
Simeon
With spring-ws-security dependency added to the pom.xml (as per M. Deinum's suggestion) I'm now seeing the following run time error:
Caused by: java.lang.NoClassDefFoundError: org/apache/ws/security/WSSecurityException
at connect.ConnectivityTestingConfig.wss4jSecurityInterceptor(ConnectivityTestingConfig.java:68)
at connect.ConnectivityTestingConfig$$EnhancerBySpringCGLIB$$e29e9046.CGLIB$wss4jSecurityInterceptor$4(<generated>)
at connect.ConnectivityTestingConfig$$EnhancerBySpringCGLIB$$e29e9046$$FastClassBySpringCGLIB$$bb38be14.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
at connect.ConnectivityTestingConfig$$EnhancerBySpringCGLIB$$e29e9046.wss4jSecurityInterceptor(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
Adding the following dependency:
<dependency>
<groupId>org.apache.ws.security</groupId>
<artifactId>wss4j</artifactId>
<version>1.5.8</version>
</dependency>
seem to resolve the above error, but is this a move in the right direction?
Concerns:
With the above additions, should spring-boot-starter-security be present in the pom.xml?
How does one control the versions of the added wss4j and should one? For example, wss4j-1.5.8.jar seems to be incompatible, while wss4j-1.6.18 seems to work. How does one correlate the version of Spring Boot to its required dependencies?
Could someone please comment on the approach? Here's the resulting pom.xml:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.5.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-ws</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-test</artifactId>
<version>2.2.1.RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-security</artifactId>
</dependency>
<dependency>
<groupId>org.apache.ws.security</groupId>
<artifactId>wss4j</artifactId>
<version>1.6.18</version>
<!-- <type>jar</type> -->
<!-- <scope>compile</scope> -->
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5</version>
<scope>provided</scope>
</dependency>
</dependencies>

I ended up with this working configuration:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.5.RELEASE</version>
<relativePath />
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
<audit-lib.version>1.0.0</audit-lib.version>
<cxf.version>3.1.0</cxf.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-ws</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-test</artifactId>
<!-- <version>2.2.1.RELEASE</version> -->
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-security</artifactId>
</dependency>
<dependency>
<groupId>org.apache.ws.security</groupId>
<artifactId>wss4j</artifactId>
<version>1.6.18</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.fuwt.iws</groupId>
<artifactId>audit-lib</artifactId>
<version>${audit-lib.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency> -->
</dependencies>

In fact I had the same problem and this answer helped me. When using Maven to add the dependency to wss4j you have the choice to add a bundle or zip/source reference, resulting in a dependency like the following:
<dependency>
<groupId>org.apache.ws.security</groupId>
<artifactId>wss4j</artifactId>
<version>1.6.19</version>
<type>zip</type>
<classifier>source-release</classifier>
</dependency>
This resulted in a NoClassDefFoundError. I got it to work by removing the type and classifier elements like mentioned in the answer above:
<dependency>
<groupId>org.apache.ws.security</groupId>
<artifactId>wss4j</artifactId>
<version>1.6.19</version>
</dependency>
After this correction my code worked fine. BTW I had no need to add any of the other dependencies following this one in the answer above.