如何使用loyom-crud-spring-boot-starter构建CRUD后端API

发布时间：2021-11-10 10:19:24 来源：亿速云阅读：165 作者：柒染栏目：大数据

这篇文章将为大家详细讲解有关如何使用loyom-crud-spring-boot-starter构建CRUD后端API，文章内容质量较高，因此小编分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。

框架 loyom-crud-spring-boot-starter 是基于SpringBoot 的 Web和JPA 构建而成的,因此只支持SpringBoot的项目

首先:

我们先建立一个Java maven 项目. pom配置如下:

<?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>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
        <relativePath/>
    </parent>

    <groupId>com.loyom</groupId>
    <artifactId>crud-demo</artifactId>
    <version>1.0-SNAPSHOT</version>


    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.loyom</groupId>
            <artifactId>loyom-crud-spring-boot-starter</artifactId>
            <version>1.1.RELEASE</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>loyom-public</id>
            <name>loyom public</name>
            <url>http://oen.im/nexus/repository/maven-public/</url>
            <snapshots>
                <enabled>true</enabled>
                <updatePolicy>always</updatePolicy>
                <checksumPolicy>warn</checksumPolicy>
            </snapshots>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>always</updatePolicy>
                <checksumPolicy>warn</checksumPolicy>
            </releases>
        </repository>
    </repositories>
</project>

因为框架jar并未发布到中央仓库,因此现使用

http://oen.im/nexus/repository/maven-public/

仓库地址

配置好了pom文件后再设置application.yml

server:
  port: 8080
  session-timeout: 1800
  connection-timeout: 5000
spring:
  application:
    name: CrudDemo
  profiles:
    active: dev
  jackson:
    #日期格式化
    date-format: yyyy-MM-dd HH:mm:ss
    serialization:
      #格式化输出
      indent_output: true
      #忽略无法转换的对象
      fail_on_empty_beans: true
    #设置空如何序列化
    defaultPropertyInclusion: ALWAYS
    deserialization:
      #允许对象忽略json中不存在的属性
      fail_on_unknown_properties: false
    parser:
      #允许出现特殊字符和转义符
      allow_unquoted_control_chars: true
      #允许出现单引号
      allow_single_quotes: true
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/db_test?useUnicode=true&autoReconnect=true&failOverReadOnly=false&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
    username: root
    password: 123456789
    driver-class-name: com.mysql.cj.jdbc.Driver
    max-active: 100
    max-idle: 8
    min-idle: 8
    initial-size: 10
    validation-query: select 1
    max-wait-millis: 10000
  jpa:
    generate-ddl: true
    show-sql: true
    database: mysql
    properties: { "hibernate.naming.physical-strategy": "org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy"}
    hibernate:
      use-new-id-generator-mappings: false
      enable_lazy_load_no_trans: true
      naming:
        physical-strategy: org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy
  configuration:
    map-underscore-to-camel-case: true
logging:
  path: ./logs
  level:
    com.loyom: debug

配置弄好了以后,

需要在数据库中建立一个空数据库 db_test ,

create database `db_test` default charset utf8mb4 collate utf8mb4_bin;

因为在配置中配置了自动建表,因此不用手动创建表,现在可以开始写代码了...

首先搞个启动类:

package com.loyom.crud.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoLauncher {

    public static void main(String[] args) {
        SpringApplication.run(DemoLauncher.class, args);
    }
}

再写个数据库类:

package com.loyom.crud.demo;

import javax.persistence.*;

@Entity
@Table(name = "test_data")
public class TestData {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id", nullable = false, length = 18)
    private Long id;
    @Column(name = "name", nullable = false, length = 50)
    private String name;
    @Column(name = "level", nullable = false)
    private Integer level;
    @Column(name = "create_time", nullable = false, length = 14)
    private Long createTime;

    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Integer getLevel() {
        return level;
    }
    public void setLevel(Integer level) {
        this.level = level;
    }
    public Long getCreateTime() {
        return createTime;
    }
    public void setCreateTime(Long createTime) {
        this.createTime = createTime;
    }
}

再搞个数据库操作类:

package com.loyom.crud.demo;

import com.loyom.crud.annotation.CrudController;
import com.loyom.crud.service.AbsDao;

@CrudController("test")
public interface TestDao extends AbsDao<TestData, Long> {
}

好了,大功告成...现在启动项目就可以访问关于TestData的Crud操作了..

访问的API前缀为 /crud/{在CrudController中配置的名字}/操作

在此demo中CrudController注解配置的名字为 test,因此

可用的API为:

/crud/test/create 创建一个对象