Spring boot with MySQL 实例参考
节选择《Netkiller Java 手札》· Spring 框架
9.7. Spring boot with MySQL
9.7.1. Maven
pom.xml
<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>netkiller.cn</groupId>
<artifactId>api.netkiller.cn</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>api.netkiller.cn</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</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-data-jpa</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-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source />
<target />
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>
9.7.2. Resource
src/main/resources/application.properties
spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://192.168.6.1:3306/test spring.datasource.username=root spring.datasource.password=password spring.jpa.database=MYSQL spring.jpa.show-sql=true spring.jpa.hibernate.ddl-auto=update #spring.jpa.hibernate.ddl-auto=create-drop
9.7.3. Application
package api;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import api.ApplicationConfiguration;
@SpringBootApplication
@EnableConfigurationProperties(ApplicationConfiguration.class)
@EnableAutoConfiguration
@ComponentScan({ "api.web", "api.rest","api.service" })
@EnableMongoRepositories
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
9.7.4. JdbcTemplate
package api.web;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import api.domain.City;
import api.domain.Article;
import api.ApplicationConfiguration;
import api.repository.CityRepository;
import api.repository.ArticleRepository;
import api.service.TestService;
@Controller
public class IndexController {
@Autowired
private CityRepository repository;
@Autowired
private TestService testService;
@Autowired
private ApplicationConfiguration propertie;
@Autowired
private JdbcTemplate jdbcTemplate;
@RequestMapping(value = "/article")
public @ResponseBody String dailyStats(@RequestParam Integer id) {
String query = "SELECT id, title, content from article where id = " + id;
return jdbcTemplate.queryForObject(query, (resultSet, i) -> {
System.out.println(resultSet.getLong(1)+","+ resultSet.getString(2)+","+ resultSet.getString(3));
return (resultSet.getLong(1)+","+ resultSet.getString(2)+","+ resultSet.getString(3));
});
}
}
9.7.5. CrudRepository
ArticleRepository
package api.repository;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import api.domain.Article;
@Repository
public interface ArticleRepository extends CrudRepository<Article, Long> {
Page<Article> findAll(Pageable pageable);
}
Article.java
package api.domain;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Table;
@Entity
@Table(name = "article")
public class Article implements Serializable {
private static final long serialVersionUID = 7998903421265538801L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name = "id", unique=true, nullable=false, insertable=true, updatable = false)
private Long id;
private String title;
private String content;
public Article(){
}
public Article(String title, String content) {
this.title = title;
this.content = content;
}
public Long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
@Override
public String toString() {
return "Article [id=" + id + ", title=" + title + ", content=" + content + "]";
}
}
package api.web;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import api.domain.City;
import api.domain.Article;
import api.ApplicationConfiguration;
import api.repository.CityRepository;
import api.repository.ArticleRepository;
import api.service.TestService;
@Controller
public class IndexController {
@Autowired
private CityRepository repository;
@Autowired
private TestService testService;
@Autowired
private ApplicationConfiguration propertie;
@Autowired
private ArticleRepository articleRepository;
@RequestMapping("/save")
@ResponseBody
public String save() {
articleRepository.save(new Article("Neo", "Chen"));
return "OK";
}
@RequestMapping("/mysql")
@ResponseBody
public String mysql() {
for (Article article : articleRepository.findAll()) {
System.out.println(article);
}
return "OK";
}
}
延伸阅读
Spring Boot · Mongo Repository
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