spring-boot-configuration-processor用法举例

spring默认使用yml中的配置,但有时候要用传统的xml或properties配置,就需要使用spring-boot-configuration-processor了

引入pom依赖

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-configuration-processor</artifactId>
      <optional>true</optional>
</dependency>
author.name=zhangsan
author.age=20

再在配置类开头加上@PropertySource("classpath:your.properties"),其余用法与加载yml的配置一样

@Component
@PropertySource(value = {"classpath:static/config/authorSetting.properties"},
        ignoreResourceNotFound = false, encoding = "UTF-8", name = "authorSetting.properties")
public class AuthorTest {
 
    @Value("${author.name}")
    private String name;
    @Value("${author.age}")
    private int age;
}

@PropertySource 中的属性解释 
1.value:指明加载配置文件的路径。 
2.ignoreResourceNotFound:指定的配置文件不存在是否报错,默认是false。当设置为 true 时,若该文件不存在,程序不会报错。实际项目开发中,最好设置 ignoreResourceNotFound 为 false。 
3.encoding:指定读取属性文件所使用的编码,我们通常使用的是UTF-8。

当我们使用 @Value 需要注入的值较多时,代码就会显得冗余,于是 @ConfigurationProperties 登场了

@Component
@ConfigurationProperties(prefix = "author")
@PropertySource(value = {"classpath:static/config/authorSetting.properties"},
        ignoreResourceNotFound = false, encoding = "UTF-8", name = "authorSetting.properties")
public class AuthorTest {
 
    private String name;
    private int age;
 
}
@RestController
@EnableConfigurationProperties
public class DemoController {
 
    @Autowired
    AuthorTest authorTest;
 
    @RequestMapping("/")
    public String index(){
        return "author's name is " + authorTest.getName() + ",ahtuor's age is " + authorTest.getAge();
    }
}

使用 @EnableConfigurationProperties 开启 @ConfigurationProperties 注解。

原文地址:https://www.cnblogs.com/felixzh/p/12768603.html