SpringBoot获取yml和properties配置文件的内容
发布时间:2020-12-14 19:51:11 所属栏目:Java 来源:网络整理
导读:(一)yml配置文件: pom.xml加入依赖: !-- 支持 @ConfigurationProperties 注解 --!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-configuration-processor --dependency groupIdorg.springframework.boot/groupId artifac
(一)yml配置文件: pom.xml加入依赖: <!-- 支持 @ConfigurationProperties 注解 --> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-configuration-processor --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <version>${spring-boot.version}</version> </dependency> 在application.yml文件中加上: #自定义的属性和值 myYml: simpleProp: simplePropValue arrayProps: 1,2,3,4,5 listProp1: - name: abc value: abcValue - name: efg value: efgValue listProp2: - config2Value1 - config2Vavlue2 mapProps: key1: value1 key2: value2 使用一个java类获取yml文件的内容: package com.sun.configuration; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * 加载yaml配置文件的方法 * Created by sun on 2017-1-15. * spring-boot更新到1.5.2版本后locations属性无法使用 * @PropertySource注解只可以加载proprties文件,无法加载yaml文件 * 故现在把数据放到application.yml文件中,spring-boot启动时会加载 */ @Component //@ConfigurationProperties(locations = {"classpath:config/myProps.yml"},prefix = "myProps") @ConfigurationProperties(prefix = "myYml") public class YmlConfig { String simpleProp; private String[] arrayProps; private List<Map<String,String>> listProp1 = new ArrayList<>(); //接收prop1里面的属性值 private List<String> listProp2 = new ArrayList<>(); //接收prop2里面的属性值 private Map<String,String> mapProps = new HashMap<>(); //接收prop1里面的属性值 public String getSimpleProp() { return simpleProp; } //String类型的一定需要setter来接收属性值;maps,collections,和 arrays 不需要 public void setSimpleProp(String simpleProp) { this.simpleProp = simpleProp; } public String[] getArrayProps() { return arrayProps; } public void setArrayProps(String[] arrayProps) { this.arrayProps = arrayProps; } public List<Map<String,String>> getListProp1() { return listProp1; } public void setListProp1(List<Map<String,String>> listProp1) { this.listProp1 = listProp1; } public List<String> getListProp2() { return listProp2; } public void setListProp2(List<String> listProp2) { this.listProp2 = listProp2; } public Map<String,String> getMapProps() { return mapProps; } public void setMapProps(Map<String,String> mapProps) { this.mapProps = mapProps; } } 通过依赖注入就可以获取该对象: @Autowired private YmlConfig config; 方法内获取值: ObjectMapper objectMapper = new ObjectMapper(); //测试加载yml文件 System.out.println("simpleProp: " + config.getSimpleProp()); System.out.println("arrayProps: " + objectMapper.writeValueAsString(config.getArrayProps())); System.out.println("listProp1: " + objectMapper.writeValueAsString(config.getListProp1())); System.out.println("listProp2: " + objectMapper.writeValueAsString(config.getListProp2())); System.out.println("mapProps: " + objectMapper.writeValueAsString(config.getMapProps())); (二)properties配置文件: 使用@PropertySource注解加载配置文件,该注解无法加载yml配置文件。使用@Value注解获得文件中的参数值 package com.sun.configuration; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.PropertySource; import org.springframework.context.support.PropertySourcesPlaceholderConfigurer; /** * 加载properties配置文件,在方法中可以获取 * abc.properties文件不存在,验证ignoreResourceNotFound属性 * 加上encoding = "utf-8"属性防止中文乱码,不能为大写的"UTF-8" * Created by sun on 2017-3-30. */ @Configuration @PropertySource(value = {"classpath:/config/propConfigs.properties","classpath:/config/abc.properties"},ignoreResourceNotFound = true,encoding = "utf-8") public class PropConfig { // PropertySourcesPlaceholderConfigurer这个bean, // 这个bean主要用于解决@value中使用的${…}占位符。 // 假如你不使用${…}占位符的话,可以不使用这个bean。 @Bean public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() { return new PropertySourcesPlaceholderConfigurer(); } } //获取properties文件参数值有两种方法,一种获得Environment 的对象,第二种就是@Value注解 @Autowired private Environment env; @Value("${age}") String name; @RequestMapping("/") @ResponseBody String home(HttpServletRequest req) throws JsonProcessingException,UnsupportedEncodingException { logger.info("测试通过!!!"); ObjectMapper objectMapper = new ObjectMapper(); //测试加载yml文件 System.out.println("simpleProp: " + config.getSimpleProp()); System.out.println("arrayProps: " + objectMapper.writeValueAsString(config.getArrayProps())); System.out.println("listProp1: " + objectMapper.writeValueAsString(config.getListProp1())); System.out.println("listProp2: " + objectMapper.writeValueAsString(config.getListProp2())); System.out.println("mapProps: " + objectMapper.writeValueAsString(config.getMapProps())); //测试加载properties文件 System.out.println(env.getProperty("name"));//孙凯 System.out.println(env.getProperty("abc"));//null System.out.println(name);//26 return "Hello World!"; } 以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程小技巧。 您可能感兴趣的文章:
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