yaml解析

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本文介绍如何使用Spring框架自带的YAML解析工具进行配置文件的读取。通过YamlMapFactoryBean和YamlPropertiesFactoryBean两个类，可以将YAML源转换为Map或Properties对象。此外，还展示了如何使用SnakeYAML库将YAML文件直接转换为Java对象。

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1、使用spring自带的yaml解析工具：

<bean id="yamlMap" class="org.springframework.beans.factory.config.YamlMapFactoryBean">  
        <property name="resources">  
            <list>  
                <value>classpath:config/xxxx.yml</value>  
            </list>  
        </property>  
        <property name="resolutionMethod" value="FIRST_FOUND"/>  
    </bean>

public class YamlUtils {
    private static final Logger logger = LogManager.getLogger(YamlUtils.class);

    public static Map<String, Object> yaml2Map(String yamlSource) {
        try {
            YamlMapFactoryBean yaml = new YamlMapFactoryBean();
            yaml.setResources(new ClassPathResource(yamlSource));
            return yaml.getObject();
        } catch (Exception e) {
            logger.error("Cannot read yaml", e);
            return null;
        }
    }

    public static Properties yaml2Properties(String yamlSource) {
        try {
            YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
            yaml.setResources(new ClassPathResource(yamlSource));
            return yaml.getObject();
        } catch (Exception e) {
            logger.error("Cannot read yaml", e);
            return null;
        }
    }
}

this.languages=(Map

<dependency>
            <groupId>org.yaml</groupId>
            <artifactId>snakeyaml</artifactId>
            <version>1.17</version>
        </dependency>

Yaml yaml = new Yaml();
LibraryPolicyDto libraryPolicyDto = yaml.loadAs(inputStream, LibraryPolicyDto.class);

打完收工。。。
附yaml文件：

systemLibraryId: 1 
relativeLibraryId: xxx 
readerPolicyIndex: 1 
bookPolicyIndex: 1 
otherPublicApi: 
- 
name: showApi 
desc: 查看api 
url: 127.0.0.1:8080/api/showApi 
port: 8080 
inputParams: 
- id:int 
- libraryId:String 
outputParams: 
- name:String 
- desc:String 
- url:String 
- inputParams:String 
- ouputParams:String

附LibraryPolicyDto

public class LibraryPolicyDto {
    private int systemLibraryId;
    private String relativeLibraryId;
    private int readerPolicyIndex;
    private int bookPolicyIndex;
    private List<ApiDto> otherPublicApi;
    //getter
    //setter
}