Spring Boot - javax Import statements not working correctly

问题

I just started working with Spring Boot, and am currently following this tutorial with some small modifications to naming and using their own version of Eclipse, which has this generator built in.

When I get to the first snippet of code, I try just copying over the import statements to start with,

import com.fasterxml.jackson.annotation.JsonIgnore;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import java.util.HashSet;
import java.util.Set;

which gets me the following error with the javax imports:

The import javax.persistence.[insert name here] cannot be resolved

When I find the javax.persistence package, I find that, sure enough, the starter code provided from their own service does not contain the listed packages. I'm left confused and wondering if I did something wrong in the initial steps. Anyone have any ideas?

Edit 1: pom content provided

<?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.Me</groupId>
<artifactId>petstore</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>petstore</name>
<description>Petstore Project</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.5.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-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

回答1:

Add spring-boot-starter-data-jpa dependency

If you are using Maven add to pom.xml

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

If you are using Gradle add in build.gradle

compile "org.springframework.boot:spring-boot-starter-data-jpa"

for other refer this.

回答2:

Add this dependency in you pom.xml

<dependency>
    <groupId>org.hibernate.javax.persistence</groupId>
    <artifactId>hibernate-jpa-2.0-api</artifactId>
    <version>1.0.1.Final</version>
</dependency>

After that Right click on your project and in maven option update your project. That should fix it.

来源：https://stackoverflow.com/questions/37327697/spring-boot-javax-import-statements-not-working-correctly

标签

java

eclipse

Spring

spring-mvc

javax.persistence