From 44ff559d70554dd8a15b72a42eb7ff7f0fae4271 Mon Sep 17 00:00:00 2001
From: qibaoguang <qibaoguang@gmail.com>
Date: Sun, 8 Feb 2015 22:06:15 +0800
Subject: [PATCH] Update 23.6.1. Loading YAML.md

---
 .../23.6.1. Loading YAML.md                   | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/IV. Spring Boot features/23.6.1. Loading YAML.md b/IV. Spring Boot features/23.6.1. Loading YAML.md
index e69de29..5c8c1e1 100644
--- a/IV. Spring Boot features/23.6.1. Loading YAML.md	
+++ b/IV. Spring Boot features/23.6.1. Loading YAML.md	
@@ -0,0 +1,43 @@
+### 23.6.1. 加载YAML
+
+Spring框架提供两个便利的类用于加载YAML文档，YamlPropertiesFactoryBean会将YAML作为Properties来加载，YamlMapFactoryBean会将YAML作为Map来加载。
+
+示例：
+```json
+environments:
+    dev:
+        url: http://dev.bar.com
+        name: Developer Setup
+    prod:
+        url: http://foo.bar.com
+        name: My Cool App
+```
+上面的YAML文档会被转化到下面的属性中：
+```java
+environments.dev.url=http://dev.bar.com
+environments.dev.name=Developer Setup
+environments.prod.url=http://foo.bar.com
+environments.prod.name=My Cool App
+```
+YAML列表被表示成使用[index]间接引用作为属性keys的形式，例如下面的YAML：
+```json
+my:
+   servers:
+       - dev.bar.com
+       - foo.bar.com
+```
+将会转化到下面的属性中:
+```java
+my.servers[0]=dev.bar.com
+my.servers[1]=foo.bar.com
+```
+使用Spring DataBinder工具绑定那样的属性（这是@ConfigurationProperties做的事），你需要确定目标bean中有个java.util.List或Set类型的属性，并且需要提供一个setter或使用可变的值初始化它，比如，下面的代码将绑定上面的属性：
+```java
+@ConfigurationProperties(prefix="my")
+public class Config {
+    private List<String> servers = new ArrayList<String>();
+    public List<String> getServers() {
+        return this.servers;
+    }
+}
+```