YAML的Java实现——JYAML基本原理与示例（3）YAML对文件流的处理

请您先阅读：

《YAML的Java实现——JYAML基本原理与示例（1）导出数据为YAML格式文件》

《YAML的Java实现——JYAML基本原理与示例（2）导入YAML格式文件》

1. FileOutputStream

以流的方式，将数据写入到YAML文件中。

/* Output data structure into a YAML file as a FileOutputStream. */
try {
YamlEncoder yEncoder = new YamlEncoder(new FileOutputStream(dumpFile));
for (int i = 0; i < 3; ++i) {
michael.setAge(24 + i);
yEncoder.writeObject(michael);
yEncoder.flush();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}

2. FileInputStream

以流的方式，从YAML文件中将数据读入。

/* Input a YAML file into data structure as a FileOutputStream. */
try {
YamlDecoder yDecoder = new YamlDecoder(new FileInputStream(dumpFile));
Person[] persons = {new Person(), new Person(), new Person()};
for (int i = 0; i < 3; ++i) {
persons[i] = (Person) yDecoder.readObject();
System.out.println();
TestYaml.output(persons[i]);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (EOFException e) {
e.printStackTrace();
}

3. 查看YAML文件

--- &0 !com.sinosuperman.yaml.Person
age: 24
children: &2 !com.sinosuperman.yaml.Person[]
- !com.sinosuperman.yaml.Person
age: 3
name: boy
- !com.sinosuperman.yaml.Person
age: 1
name: girl
name: Michael Corleone
spouse: !com.sinosuperman.yaml.Person
age: 24
children: *2
name: Floveria Edie
spouse: *0
--- &9 !com.sinosuperman.yaml.Person
age: 25
children: &11 !com.sinosuperman.yaml.Person[]
- !com.sinosuperman.yaml.Person
age: 3
name: boy
- !com.sinosuperman.yaml.Person
age: 1
name: girl
name: Michael Corleone
spouse: !com.sinosuperman.yaml.Person
age: 24
children: *11
name: Floveria Edie
spouse: *9
--- &18 !com.sinosuperman.yaml.Person
age: 26
children: &20 !com.sinosuperman.yaml.Person[]
- !com.sinosuperman.yaml.Person
age: 3
name: boy
- !com.sinosuperman.yaml.Person
age: 1
name: girl
name: Michael Corleone
spouse: !com.sinosuperman.yaml.Person
age: 24
children: *20
name: Floveria Edie
spouse: *18

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原文链接：
http://blog.csdn.net/poechant/article/details/7017113