springboot使用REST访问JPA数据
资料来源：官方指南https://spring.io/guides/gs/accessing-data-rest/
一、创建一个maven工程spring-boot-hello，pom.xml文件中引入项目依赖
org.springframework.boot
spring-boot-starter-parent
2.1.4.RELEASE
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-test
test
com.jayway.jsonpath
json-path
test
org.springframework.boot
spring-boot-starter-data-rest
org.springframework.boot
spring-boot-starter-data-jpa
com.h2database
h2
org.junit.jupiter
junit-jupiter-engine
test
org.junit.platform
junit-platform-runner
test
1.8
org.springframework.boot
spring-boot-maven-plugin
二、创建实体类Person.java
package com.szcatic.entity;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Person {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
private String firstName;
private String lastName;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}
三、创建接口PersonRepository.java
package com.szcatic.repositories;
import java.util.List;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;
import com.szcatic.entity.Person;
@RepositoryRestResource(collectionResourceRel = "people", path = "people")
public interface PersonRepository extends PagingAndSortingRepository {
List findByLastName(@Param("name") String name);
}
四、创建引导类Application.java
package com.szcatic;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}五、启动引导类主程序
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.4.RELEASE)
2019-04-18 20:36:52.222 INFO 8876 --- [ main] com.szcatic.Application : Starting Application on zsx with PID 8876 (F:\workspace4.11\spring-boot-hello\target\classes started by admin in F:\workspace4.11\spring-boot-hello)
2019-04-18 20:36:52.225 INFO 8876 --- [ main] com.szcatic.Application : No active profile set, falling back to default profiles: default
2019-04-18 20:36:53.146 INFO 8876 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-04-18 20:36:53.212 INFO 8876 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 58ms. Found 1 repository interfaces.
2019-04-18 20:36:53.569 INFO 8876 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$a34b7b4d] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-18 20:36:53.591 INFO 8876 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.hateoas.config.HateoasConfiguration' of type [org.springframework.hateoas.config.HateoasConfiguration$$EnhancerBySpringCGLIB$$22cbc87f] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-18 20:36:54.039 INFO 8876 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2019-04-18 20:36:54.071 INFO 8876 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2019-04-18 20:36:54.071 INFO 8876 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.17]
2019-04-18 20:36:54.078 INFO 8876 --- [ main] o.a.catalina.core.AprLifecycleListener : An older version [1.2.16] of the APR based Apache Tomcat Native library is installed, while Tomcat recommends a minimum version of [1.2.21]
2019-04-18 20:36:54.078 INFO 8876 --- [ main] o.a.catalina.core.AprLifecycleListener : Loaded APR based Apache Tomcat Native library [1.2.16] using APR version [1.6.3].
2019-04-18 20:36:54.078 INFO 8876 --- [ main] o.a.catalina.core.AprLifecycleListener : APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
2019-04-18 20:36:54.078 INFO 8876 --- [ main] o.a.catalina.core.AprLifecycleListener : APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
2019-04-18 20:36:55.152 INFO 8876 --- [ main] o.a.catalina.core.AprLifecycleListener : OpenSSL successfully initialized [OpenSSL 1.0.2m 2 Nov 2017]
2019-04-18 20:36:55.436 INFO 8876 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-04-18 20:36:55.437 INFO 8876 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3165 ms
2019-04-18 20:36:56.035 INFO 8876 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2019-04-18 20:36:56.213 INFO 8876 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2019-04-18 20:36:56.470 INFO 8876 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2019-04-18 20:36:56.603 INFO 8876 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.3.9.Final}
2019-04-18 20:36:56.604 INFO 8876 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-04-18 20:36:56.983 INFO 8876 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
2019-04-18 20:36:57.365 INFO 8876 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2019-04-18 20:36:58.773 INFO 8876 --- [ main] o.h.t.schema.internal.SchemaCreatorImpl : HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@6a950a3b'
2019-04-18 20:36:58.776 INFO 8876 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-04-18 20:36:59.861 INFO 8876 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2019-04-18 20:36:59.929 WARN 8876 --- [ main] aWebConfiguration$JpaWebMvcConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2019-04-18 20:37:00.401 INFO 8876 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2019-04-18 20:37:00.405 INFO 8876 --- [ main] com.szcatic.Application : Started Application in 8.653 seconds (JVM running for 9.883)
六、打开postman
1.提交请求http://localhost:8080，显示结果如下：
{
"_links": {
"people": {
"href": "http://localhost:8080/people{?page,size,sort}",
"templated": true
},
"profile": {
"href": "http://localhost:8080/profile"
}
}
}
2.提交请求 http://localhost:8080/people，显示结果如下：
{
"_embedded": {
"people": []
},
"_links": {
"self": {
"href": "http://localhost:8080/people{?page,size,sort}",
"templated": true
},
"profile": {
"href": "http://localhost:8080/profile/people"
},
"search": {
"href": "http://localhost:8080/people/search"
}
},
"page": {
"size": 20,
"totalElements": 0,
"totalPages": 0,
"number": 0
}
}
3.提交请求 http://localhost:8080/people，请求方式为POST，请求参数为“{"firstName": "Frodo", "lastName": "Baggins"}”显示结果如下：
{
"firstName": "Bilbo",
"lastName": "Baggins",
"_links": {
"self": {
"href": "http://localhost:8080/people/1"
},
"person": {
"href": "http://localhost:8080/people/1"
}
}
}
4.提交请求 http://localhost:8080/people/1，显示结果如下：
{
"firstName": "Bilbo",
"lastName": "Baggins",
"_links": {
"self": {
"href": "http://localhost:8080/people/1"
},
"person": {
"href": "http://localhost:8080/people/1"
}
}
}
5.提交请求http://localhost:8080/people/search，显示结果如下：
{
"_links": {
"findByLastName": {
"href": "http://localhost:8080/people/search/findByLastName{?name}",
"templated": true
},
"self": {
"href": "http://localhost:8080/people/search"
}
}
}6.提交请求http://localhost:8080/people/search/findByLastName?name=Baggins，显示结果如下：
{
"_embedded": {
"people": [
{
"firstName": "Bilbo",
"lastName": "Baggins",
"_links": {
"self": {
"href": "http://localhost:8080/people/1"
},
"person": {
"href": "http://localhost:8080/people/1"
}
}
}
]
},
"_links": {
"self": {
"href": "http://localhost:8080/people/search/findByLastName?name=Baggins"
}
}
}
7.提交请求http://localhost:8080/people/1，请求方式为“PUT”，请求参数为“{"firstName": "Bilbo", "lastName": "Baggins"}”，显示结果如下：
{
"firstName": "Bilbo",
"lastName": "Baggins",
"_links": {
"self": {
"href": "http://localhost:8080/people/1"
},
"person": {
"href": "http://localhost:8080/people/1"
}
}
}
8.提交请求http://localhost:8080/people/1，请求方式为“PATCH”，请求参数为“{"firstName": "Bilbo Jr."}”，显示结果如下：
{
"firstName": "Bilbo Jr.",
"lastName": "Baggins",
"_links": {
"self": {
"href": "http://localhost:8080/people/1"
},
"person": {
"href": "http://localhost:8080/people/1"
}
}
}
9.提交删除请求http://localhost:8080/people/1，请求方式为“DELETE”，显示结果如下：
再提交请求http://localhost:8080/people，查看结果，结果显示如下：
{
"_embedded": {
"people": []
},
"_links": {
"self": {
"href": "http://localhost:8080/people{?page,size,sort}",
"templated": true
},
"profile": {
"href": "http://localhost:8080/profile/people"
},
"search": {
"href": "http://localhost:8080/people/search"
}
},
"page": {
"size": 20,
"totalElements": 0,
"totalPages": 0,
"number": 0
}
}