我想将服务器属性从 application.yml 加载到 Configuration class 。
我看到很多人已经问过同样的问题,但没有一个对我有用:(
请帮我弄清楚我错过了什么
@Configuration
@ConfigurationProperties("demo")
public class Democonfig {
private List<Archive> archive = new ArrayList<>();
public Democonfig(List<Archive> archive) {
this.archive = archive;
}
// Getter and setter
public static class Archive {
private String host;
private String database;
private String port;
public Archive(String host, String database, String port) {
this.host = host;
this.database = database;
this.port = port;
}
// Getters and setters
}
}
application.yml
demo:
archive:
-
host: "localhost"
database: "archive1"
port: "27017"
-
host: "localhost"
database: "archive2"
port: "27017"
它的显示异常
Binding to target [Bindable@129425f type = java.util.List<com.example.demo.config.Democonfig$Archive>, value = 'provided', annotations = array<Annotation>[[empty]]] failed:
Property: demo.archive[0].database
Value: archive1
Origin: class path resource [application.yml]:5:15
Reason: The elements [demo.archive[0].database,demo.archive[0].host,demo.archive[0].port,demo.archive[1].database,demo.archive[1].host,demo.archive[1].port] were left unbound.
Property: demo.archive[0].host
Value: localhost
Origin: class path resource [application.yml]:4:11
Reason: The elements [demo.archive[0].database,demo.archive[0].host,demo.archive[0].port,demo.archive[1].database,demo.archive[1].host,demo.archive[1].port] were left unbound.
Property: demo.archive[0].port
Value: 27017
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最佳答案
您缺少嵌套静态类中的 No arg 构造函数,实际上是 无需为构造函数提供参数。只有 setter 和 getter 可以 我也鼓励你检查并使用 lombok,它会让你的代码更加简洁
public static class Archive {
private String host;
private String database;
private String port;
public Archive() {
// TODO Auto-generated constructor stub
}
public Archive(String host, String database, String port) {
System.out.println("constri=uu Archive");
this.host = host;
this.database = database;
this.port = port;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getDatabase() {
return database;
}
public void setDatabase(String database) {
this.database = database;
}
public String getPort() {
return port;
}
public void setPort(String port) {
this.port = port;
}
@Override
public String toString() {
return "Archive [host=" + host + ", database=" + database + ", port=" + port + "]";
}
}
关于java - 无法从 application.yml 加载属性未绑定(bind),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54505586/