42 lines
963 B
Markdown
42 lines
963 B
Markdown
# Spring MapPropertySource
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- Author: [HuiFer](https://github.com/huifer)
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- 源码阅读仓库: [SourceHot-spring](https://github.com/SourceHot/spring-framework-read)
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- 类全路径: `org.springframework.core.env.MapPropertySource`
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- 内部数据结构是一个`Map<String,Object>`
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这是一个对 map 的操作.
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- 整体代码如下.
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```java
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public class MapPropertySource extends EnumerablePropertySource<Map<String, Object>> {
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public MapPropertySource(String name, Map<String, Object> source) {
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super(name, source);
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}
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@Override
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@Nullable
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public Object getProperty(String name) {
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// 从map中获取 name 对应的value
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return this.source.get(name);
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}
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@Override
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public boolean containsProperty(String name) {
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// 判断是否存在 name 属性
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return this.source.containsKey(name);
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}
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@Override
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public String[] getPropertyNames() {
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// 互殴去 map 的所有key
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return StringUtils.toStringArray(this.source.keySet());
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}
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}
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```
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