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Java|Java Maven+Idea 构建SpringBoot项目(光速入门)
- springboot+jpa+druid构建Restful服务
- springboot官网
- maven 创建项目
mvn archetype:generate -DgroupId=com.mico.emptyspringboot -DartifactId=emptyspringboot -DarchetypeArtifactId=maven-archetype-quickstart -DinteractivMode=false
- 当然你可以从springboot的官网下载quickstart,也可以从intelij idea的File->New->Project->Spring Initializr
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Spring Initializr
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springboot-start
4.0.0org.springframework.boot
spring-boot-starter-parent
2.1.2.RELEASE
com.mico.domo.springboot
demo
0.0.1-SNAPSHOT
demo
Demo project for Spring Boot1.8
org.springframework.boot
spring-boot-starter-data-jpa
org.springframework.boot
spring-boot-starter-web
mysql
mysql-connector-java
runtime
org.projectlombok
lombok
true
com.alibaba
druid
1.0.18
org.slf4j
log4j-over-slf4j
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-maven-plugin
- 本地已创建项目push到远程git
- springboot的配置文件application.properties
# Server Domain-Port
server.address=127.0.0.1
server.port=9090#spring-datasource
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&useSSL=true
spring.datasource.username=root
spring.datasource.password=micocube
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
spring.datasource.maxWait=60000
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.filters=stat,wall,log4j
spring.datasource.connectionProperties=druid.stat.mergeSql=true;
druid.stat.slowSqlMillis=5000
spring.datasource.useGlobalDataSourceStat=true
#JPA Configuration:
spring.jpa.database=MYSQL
# Show or not log for each sql query
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
# Hibernate ddl auto (create, create-drop, update)
spring.jpa.hibernate.ddl-auto=update#log
logging.config=classpath:logback.xml
LOG_PATH=./logs/coding.log#encoding
spring.http.encoding.force=true
spring.http.encoding.charset=UTF-8
spring.http.encoding.enabled=true
server.tomcat.uri-encoding=UTF-8
- springboot日志配置文件,logback.xml,Springboot logback.xml配置文件详解,
Springboot 使用druid连接池抛ClassNotFoundException
/data/www/file/logs/springboot.log%date %d{HH: mm:ss.SSS} %level [%thread] %logger{10} [%file:%line] %msg%n
%date %d{HH: mm:ss.SSS} %level [%thread] %logger{10} [%file:%line] %msg%n
- springboot启动类Application.java
package com.mico.domo.springboot.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoApplication {public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}}
package com.mico.emptyspringboot.config;
import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import javax.sql.DataSource;
import java.sql.SQLException;
/**
* DruidDBConfig类被@Configuration标注，用作配置信息；
* DataSource对象被@Bean声明，为Spring容器所管理，
* @Primary表示这里定义的DataSource将覆盖其他来源的DataSource。
*jdbc.url=${jdbc.url}
*最新的支持方式如下:
*jdbc.url=@jdbc.url@
*/
@Configuration
public class DruidDBConfig {
//private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);
@Value("${spring.datasource.url}")
private String dbUrl;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driverClassName}")
private String driverClassName;
@Value("${spring.datasource.initialSize}")
private int initialSize;
@Value("${spring.datasource.minIdle}")
private int minIdle;
@Value("${spring.datasource.maxActive}")
private int maxActive;
@Value("${spring.datasource.maxWait}")
private int maxWait;
@Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${spring.datasource.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${spring.datasource.validationQuery}")
private String validationQuery;
@Value("${spring.datasource.testWhileIdle}")
private boolean testWhileIdle;
@Value("${spring.datasource.testOnBorrow}")
private boolean testOnBorrow;
@Value("${spring.datasource.testOnReturn}")
private boolean testOnReturn;
@Value("${spring.datasource.poolPreparedStatements}")
private boolean poolPreparedStatements;
@Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
private int maxPoolPreparedStatementPerConnectionSize;
@Value("${spring.datasource.filters}")
private String filters;
@Value("{spring.datasource.connectionProperties}")
private String connectionProperties;
@Bean // 声明其为Bean实例
@Primary // 在同样的DataSource中，首先使用被标注的DataSource
public DataSource dataSource() {
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(this.dbUrl);
datasource.setUsername(username);
datasource.setPassword(password);
datasource.setDriverClassName(driverClassName);
// configuration
datasource.setInitialSize(initialSize);
datasource.setMinIdle(minIdle);
datasource.setMaxActive(maxActive);
datasource.setMaxWait(maxWait);
datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setValidationQuery(validationQuery);
datasource.setTestWhileIdle(testWhileIdle);
datasource.setTestOnBorrow(testOnBorrow);
datasource.setTestOnReturn(testOnReturn);
datasource.setPoolPreparedStatements(poolPreparedStatements);
datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
try {
datasource.setFilters(filters);
} catch (SQLException e) {}
datasource.setConnectionProperties(connectionProperties);
return datasource;
}
}
package com.mico.emptyspringboot.config;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.util.unit.DataSize;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import javax.servlet.MultipartConfigElement;
import java.nio.charset.Charset;
/**
* 访问uri:http://localhost:9090/swagger-ui.html
*/
@Configuration
public class WebAppConfigurer implements WebMvcConfigurer {@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/sign_in").setViewName("thymeleaf/login");
registry.addViewController("/sign_up").setViewName("thymeleaf/registry");
/**
* 与上面的等效
@RequestMapping("/sign_in")
public String sign_in() {
return "thymeleaf/login";
}
@RequestMapping("/sign_up")
public String sign_up() {
return "thymeleaf/registry";
}
*/
}@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
}@Bean
public MultipartConfigElement multipartConfigElement(){
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize(DataSize.ofMegabytes(10));
factory.setMaxRequestSize(DataSize.ofMegabytes(10));
return factory.createMultipartConfig();
}@Bean
public HttpMessageConverter responseBodyConverter() {
StringHttpMessageConverter converter = new StringHttpMessageConverter(Charset.forName("UTF-8"));
return converter;
}
}
package com.mico.domo.springboot.demo.domain;
import lombok.Data;
import javax.persistence.*;
@Entity
@Table
@Data
public class Role {@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String name;
public Role(){}public Role(String name) {
this.name = name;
}
}
package com.mico.domo.springboot.demo.domain;
import lombok.Data;
import javax.persistence.*;
import java.util.List;
@Entity
@Table
@Data
public class User {@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String username;
private String password;
@ManyToMany(cascade = {CascadeType.REFRESH},fetch = FetchType.EAGER)
private List roles;
public User() {
}public User(String username, String password) {
this.username = username;
this.password = password;
}
}
package com.mico.domo.springboot.demo.repository;
import com.mico.domo.springboot.demo.domain.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
public interface UserRepository extends JpaRepository {User findByUsername(String name);
@Query(value = "https://www.it610.com/article/FROM User u where u.username=:name")
User findUser(@Param("name") String name);
}
package com.mico.domo.springboot.demo.service;
import com.mico.domo.springboot.demo.domain.User;
import com.mico.domo.springboot.demo.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
@Service
public class UserDetailsService {@Autowired
private UserRepository userRepository;
public User loadUserByUsername(String s) {
return userRepository.findByUsername(s);
}
}
package com.mico.domo.springboot.demo.controller;
import com.mico.domo.springboot.demo.domain.User;
import com.mico.domo.springboot.demo.service.UserDetailsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserDetailsService userDetailsService;
@RequestMapping(value = "https://www.it610.com/{id}",method = RequestMethod.GET)
@ResponseBody
public User view(@PathVariable("id") Integer id) {
User user = new User();
user.setId(id);
user.setUsername("zhang");
return user;
}
@RequestMapping(value = "https://www.it610.com/login")
@ResponseBody
public User login(String userName, String password) {
User user = userDetailsService.loadUserByUsername(userName);
return user;
}
}
-
spring.jpa.hibernate.ddl-auto=update时jpa会自动创建数据库，插入数据
INSERT INTO test.role (id,name) VALUES (1,'User');
INSERT INTO test.user (id,username, password) VALUES (1,'root', '$2a$10$TeayMIrpuDwrpLHL5QsNpOcPeE/Kx3c4UYbi4NQzNkfKgf9YtL6F2');
INSERT INTO test.user_roles (user_id, roles_id) VALUES (1, 1);
- 【Java|Java Maven+Idea 构建SpringBoot项目(光速入门)】Run DemoApplication.main会从9090端口启动服务
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最终效果
- 项目源码
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