好的,所以我有一个config.properties
..:
market.curpairs[0].name=EuroDollar
market.curpairs[0].symbol=EURUSD
market.curpairs[0].minamount=0.1
market.curpairs[1].name=EuroFranken
market.curpairs[1].symbol=EURCHF
market.curpairs[1].minamount=0.1
market.currs[0].name=Euro
market.currs[0].symbol=EUR
market.currs[0].minamount=1.0
market.currs[0].withfee=0.1
market.currs[1].name=Dollar
market.currs[1].symbol=USD
market.currs[1].minamount=1.0
market.currs[1].withfee=0.1
market.currs[2].name=Franken
market.currs[2].symbol=CHF
market.currs[2].minamount=1.0
market.currs[2].withfee=0.1
然后我尝试注入MarketConfig.java
像这样:
@PropertySource("classpath:config.properties")
@ConfigurationProperties(prefix = "market")
@Validated
public class MarketConfig {
// the configured currencies
private List<MarketCurrency> currs;
// the configured currencypairs
private List<MarketCurrencypair> curpairs;
/* static classes */
public static class MarketCurrency {
String name;
String symbol;
double minamount;
// getter and setter ommitted
}
public static class MarketCurrencypair {
String name;
String symbol;
double minamount;
double withfee;
// getter and setter ommitted
}
// getter and setter ommitted
}
..然后用于MarketService.java
:
@Service
public class MarketService implements IMarketService {
private final MarketConfig config;
// ....
public MarketService(MarketConfig config) {
this.config = config;
}
// ....
public void printConfig() {
System.out.println("________________ CONFIGURATION: ");
this.config.getCurpairs().forEach(System.out::println);
this.config.getCurrs().forEach(System.out::println);
}
}
...这被称为Applicationmain
:
@SpringBootApplication
@EnableSwagger2
@ComponentScan
@EnableConfigurationProperties({MarketConfig.class})
public class MarketApplication implements CommandLineRunner {
private final MarketService service;
/**
* Constructor
* @param service ..the Service
*/
public MarketApplication(MarketService service) {
this.service = service;
}
public static void main(String[] args) {
SpringApplication.run(MarketApplication.class, args);
}
@Override
public void run(String... args) throws Exception {
this.service.printConfig();
}
}
...让我NullPointerException
Caused by: java.lang.NullPointerException: null
at forex.market.service.MarketService.printConfig(MarketService.java:67) ~[classes/:na]
Q1:基本上我做得对吗?
Q2:我在互联网上找不到任何帮助如何处理属性文件中的基元元组数组,是否有可能将其注入到 spring-boot 配置中 - 或者我是否需要使用将我的配置重写为字符串split()
获取个人价值观(为了可维护性和可读性,我真的不想这样做)?
提前致谢 - 如果您错过了一些信息/来源,请发表评论,我会尽快提供。