Java 使用jackson数据绑定解析yaml导致不匹配InputException

我试图阅读的yaml格式如下

- name: storage
  scm: git
  src: git+https://bitbucket.org/cer/linux_storage_jenkins.git
  version: '5'
- name: linux_jenkins
  scm: git
  src: git+https://bitbucket.org/cer/linux_jenkins.git
  version: '8'

我的模型很简单

public class Requirementsyml {
    //setter and getter in place
    private List<Requirement> items;
}

public class Requirement {
    private String name;
    private String scm;
    private String src;
    private String version;
}

然而，我得到了以下例外

com.fasterxml.jackson.databind.exc.mismatchdinputException:无法反序列化Requirementsyml的实例超出起始\u数组标记

由于模型有一个列表，我认为输入不应该不匹配。

---

我尝试将yaml文件作为java文件对象提供，而不是将其内容作为字符串提供。结果是一样的。我遗漏了什么？

yaml结构应该包含

项

数组/列表

items:
- name: storage
  scm: git
  src: git+https://bitbucket.org/cer/linux_storage_jenkins.git
  version: '5'
- name: linux_jenkins
  scm: git
  src: git+https://bitbucket.org/cer/linux_jenkins.git
  version: '8'

或者，您可以将其作为需求列表阅读，而不必更改yaml

@Test
void test() throws IOException {
    ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
    List<Requirement> requirements = mapper.readValue(new File("src/test/resources/requirements.yml"), new TypeReference<List<Requirement>>() {});
    assertEquals(2, requirements.size());
}

@测试
void test（）引发IOException{
ObjectMapper mapper=newObjectMapper（newYamlFactory（））；
List requirements=mapper.readValue（新文件（“src/test/resources/requirements.yml”）、新的TypeReference（）{}）；
资产质量（2，要求.size（））；
}

还要确保

Requirement

和其他类没有args构造函数，否则在

ObjectMapper

@Test
void test() throws IOException {
    ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
    List<Requirement> requirements = mapper.readValue(new File("src/test/resources/requirements.yml"), new TypeReference<List<Requirement>>() {});
    assertEquals(2, requirements.size());
}