pom.xml加入依赖：
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<!-- 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：
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#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：
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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：
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@Autowiredprivate YmlConfig config; |
方法内获取值：
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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
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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服务器之家。
