上一级页面：ssm-spring-boot速成学习索引

前言

最佳实践

16、最佳实践-SpringBoot应用如何编写

• 引入场景依赖
  • 官方文档
  • 2.3.4官方文档
• 查看自动配置了哪些（选做）
  • 自己分析，引入场景对应的自动配置一般都生效了
  • 配置文件中debug=true开启自动配置报告。
    • Negative（不生效）
    • Positive（生效）
• 是否需要修改
  • 参照文档修改配置项
    • 官方文档
    • 2.3.4官方文档
    • 自己分析。xxxxProperties绑定了配置文件的哪些。
  • 自定义加入或者替换组件
    • @Bean、@Component…
  • 自定义器 XXXXXCustomizer；
  • ……

17、最佳实践-Lombok简化开发

Lombok用标签方式代替构造器、getter/setter、toString()等鸡肋代码。

spring boot已经管理Lombok。引入依赖：

 <dependency>
     <groupId>org.projectlombok</groupId>
     <artifactId>lombok</artifactId>
</dependency>

IDEA中File->Settings->Plugins，搜索安装Lombok插件。

@NoArgsConstructor
//@AllArgsConstructor
@Data
@ToString
@EqualsAndHashCode
public class User {

    private String name;
    private Integer age;

    private Pet pet;

    public User(String name,Integer age){
        this.name = name;
        this.age = age;
    }
}

---

简化日志开发

@Slf4j
@RestController
public class HelloController {
    @RequestMapping("/hello")
    public String handle01(@RequestParam("name") String name){
        log.info("请求进来了....");
        return "Hello, Spring Boot 2!"+"你好："+name;
    }
}

18、最佳实践-dev-tools

Spring Boot includes an additional set of tools that can make the application development experience a little more pleasant. The spring-boot-devtools module can be included in any project to provide additional development-time features.——link

Applications that use spring-boot-devtools automatically restart whenever files on the classpath change. This can be a useful feature when working in an IDE, as it gives a very fast feedback loop for code changes. By default, any entry on the classpath that points to a directory is monitored for changes. Note that certain resources, such as static assets and view templates, do not need to restart the application.——link

Triggering a restart

As DevTools monitors classpath resources, the only way to trigger a restart is to update the classpath. The way in which you cause the classpath to be updated depends on the IDE that you are using:

• In Eclipse, saving a modified file causes the classpath to be updated and triggers a restart.
• In IntelliJ IDEA, building the project (Build -> Build Project)(shortcut: Ctrl+F9) has the same effect.

添加依赖：

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>
</dependencies>

在IDEA中，项目或者页面修改以后：Ctrl+F9(build，构建)。

19、最佳实践-Spring Initailizr

Spring Initailizr是创建Spring Boot工程向导。

在IDEA中，菜单栏New -> Project -> Spring Initailizr。

springBoot配置文件

spring-boot-配置文件

参考、引用、致谢