将字典数据，配置在 yml 文件中，通过加载yml将数据加载到 Map中
Spring Boot 中 yml 配置、引用其它 yml 中的配置。# 在配置文件目录（如：resources）下新建application-xxx
必须以application开头的yml文件， 多个文件用 "," 号分隔，不能换行
项目结构文件
application.yml
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server: port: 8088 application: name: VipSoft Env Demospring: profiles: include: dic # 在配置文件目录（如：resources）下新建application-xxx 开头的yml文件， 多个文件用 "," 号分隔，不能换行#性别字典user-gender: 0: 未知 1: 男 2: 女 |
application-dic.yml
将字典独立到单独的yml文件中
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#支付方式pay-type: 1: 微信支付 2: 货到付款 |
在 resources 目录下，创建META-INF目录，创建 spring.factories文件，
Spring Factories是一种类似于Java SPI的机制，它在META-INF/spring.factories文件中配置接口的实现类名称，然后在程序中读取这些配置文件并实例化。
内容如下:
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# Environment Post Processororg.springframework.boot.env.EnvironmentPostProcessor=com.vipsoft.web.utils.ConfigUtil |
ConfigUtil
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package com.vipsoft.web.utils;import org.springframework.boot.SpringApplication;import org.springframework.boot.context.properties.bind.BindResult;import org.springframework.boot.context.properties.bind.Binder;import org.springframework.boot.env.EnvironmentPostProcessor;import org.springframework.core.env.ConfigurableEnvironment;import org.springframework.core.env.PropertySource;import org.springframework.util.Assert;public class ConfigUtil implements EnvironmentPostProcessor { private static Binder binder; private static ConfigurableEnvironment environment; public static String getString(String key) { Assert.notNull(environment, "environment 还未初始化！"); return environment.getProperty(key, String.class, ""); } public static <T> T bindProperties(String prefix, Class<T> clazz) { Assert.notNull(prefix, "prefix 不能为空"); Assert.notNull(clazz, "class 不能为空"); BindResult<T> result = ConfigUtil.binder.bind(prefix, clazz); return result.isBound() ? result.get() : null; } /** * 通过 META-INF/spring.factories，触发该方法的执行，进行环境变量的加载 */ @Override public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) { for (PropertySource<?> propertySource : environment.getPropertySources()) { if (propertySource.getName().equals("refreshArgs")) { return; } } ConfigUtil.environment = environment; ConfigUtil.binder = Binder.get(environment); }} |
DictVo
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package com.vipsoft.web.vo;public class DictVO implements java.io.Serializable { private static final long serialVersionUID = 379963436836338904L; /** * 字典类型 */ private String type; /** * 字典编码 */ private String code; /** * 字典值 */ private String value; public DictVO(String code, String value) { this.code = code; this.value = value; } public String getType() { return type; } public void setType(String type) { this.type = type; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } public String getValue() { return value; } public void setValue(String value) { this.value = value; }} |
DefaultController
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package com.vipsoft.web.controller;import com.vipsoft.web.utils.ConfigUtil;import com.vipsoft.web.vo.DictVO;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RestController;import java.util.ArrayList;import java.util.LinkedHashMap;import java.util.List;@RestControllerpublic class DefaultController { @GetMapping(value = "/") public String login() { return "VipSoft Demo !!!"; } @GetMapping("/list/{type}") public List<DictVO> listDic(@PathVariable("type") String type) { LinkedHashMap dict = ConfigUtil.bindProperties(type.replaceAll("_", "-"), LinkedHashMap.class); List<DictVO> list = new ArrayList<>(); if (dict == null || dict.isEmpty()) { return list; } dict.forEach((key, value) -> list.add(new DictVO(key.toString(), value.toString()))); return list; }} |
运行效果
单元测试
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package com.vipsoft.web;import com.vipsoft.web.controller.DefaultController;import com.vipsoft.web.utils.ConfigUtil;import com.vipsoft.web.vo.DictVO;import org.junit.jupiter.api.Test;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.context.SpringBootTest;import java.util.List;@SpringBootTestpublic class DicTest { @Autowired DefaultController defaultController; @Test public void DicListTest() throws Exception { List<DictVO> pay_type = defaultController.listDic("pay-type"); pay_type.forEach(p -> System.out.println(p.getCode() + " => " + p.getValue())); List<DictVO> user_gender = defaultController.listDic("user-gender"); user_gender.forEach(p -> System.out.println(p.getCode() + " => " + p.getValue())); } @Test public void getString() throws Exception { String includeYml = ConfigUtil.getString("spring.profiles.include"); System.out.println("application 引用了配置文件 =》 " + includeYml); }} |
以上就是SpringBoot实现加载yml文件中字典数据的详细内容，更多关于SpringBoot加载yml文件字典数据的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/vipsoft/p/17332858.html
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