Всем привет!
Изучаю Spring 5.0. Пытаюсь внедрить бин client в методе main. Получаю ошибку:
авторException in thread "restartedMain" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.lang.NullPointerException
at com.example.springlogger.SpringLoggerApplication.main(SpringLoggerApplication.java:20)
... 5 more
SpringLoggerApplication.java
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package com.example.springlogger;
import com.example.springlogger.bean.Client;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringLoggerApplication {
private Client client;
public void setClient(Client client) {
this.client = client;
}
public static void main(String[] args) {
SpringApplication.run(SpringLoggerApplication.class, args);
SpringLoggerApplication app = new SpringLoggerApplication();
app.setClient(app.client);
System.out.println(app.client.getFullName());
}
}
AppConfig.java
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package com.example.springlogger;
import com.example.springlogger.bean.Client;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class AppConfig {
@Bean
public Client getClient() {
return new Client();
}
}
Client.java
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package com.example.springlogger.bean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
@Component
public class Client {
@Value("1")
private int id;
@Value("FullName")
private String fullName;
public Client() {
}
public Client(int id, String fullName) {
this.id = id;
this.fullName = fullName;
}
public String getFullName() {
return fullName;
}
}
