about 3 years ago
Spring Boot 在設定檔方面幫我們做好許多事，我們要做的大概就只有定義Class跟寫註解
注入一組字串List
設定檔
CrawlerClassArray:
- CrawlerApple
- CrawlerYahoo
- CrawlerEttoday
- CrawlerChinatimes
package com.sam.app;
import java.util.List;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Data
@Component
@ConfigurationProperties
public class CrawlerConfig {
private List<String> crawlerClassArray;
}
使用方式
@Autowired
private CrawlerConfig crawlerConfig;
crawlerConfig.getCrawlerClassArray().forEach( classname -> System.out.println(classname));
結果頁
CrawlerApple
CrawlerYahoo
CrawlerEttoday
CrawlerChinatimes
如果你想注入一組有結構的資料
設定檔
crawler:
targets:
-
name: CrawlerApple
-
name: CrawlerYahoo
-
name: CrawlerEttoday
-
name: CrawlerChinatimes
-
name: GoogleAlert
source: D:/stockalert.txt
定義資料對應的物件格式
import lombok.Data;
@Data
public class CrawlerTarget {
private String name;
private String source;
}
設定檔對象
import java.util.List;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Data
@Component
@ConfigurationProperties(prefix="crawler")
public class CrawlerConfig {
private List<CrawlerTarget> targets;
}
使用的時候
@Autowired
private CrawlerConfig crawlerConfig;
crawlerConfig.getTargets().forEach( e -> System.out.println(e.toString()));
結果
CrawlerTarget(name=CrawlerApple, source=null)
CrawlerTarget(name=CrawlerYahoo, source=null)
CrawlerTarget(name=CrawlerEttoday, source=null)
CrawlerTarget(name=CrawlerChinatimes, source=null)
CrawlerTarget(name=GoogleAlert, source=D:/stockalert.txt)
結論上來說比xml更簡易了
20150826補充
變更執行的Port
server:
port: 8080
or
java -jar demo-0.0.1-SNAPSHOT.jar --server.port=9000
