java无法调用“com.example.gestion.service.TestService.saveTest（testreport）”，因为“this.testRepository”为空

Question

嗨，我正在尝试将多个线程与我的spring boot应用程序集成。我在我的服务中创建了一个类MyRunnable 这是我的班级：

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.sql.Time;

import javax.annotation.PostConstruct;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.springframework.beans.factory.annotation.Autowired;

import com.example.gestion.entity.Archive;
import com.example.gestion.entity.Lien;
import com.example.gestion.entity.TestRapport;
import com.example.gestion.repository.ApplicationsRepository;
import com.example.gestion.repository.ArchiveRepository;

public class MyRunnable implements Runnable {
    private final Lien lien;
    public static String message="";
    

    
    @Autowired
    TestService testRepository;
    
    MyRunnable(Lien url) {
        
        this.lien = url;
    }
    
    
    public static int hhttpcode(String site) throws IOException {
        try {
    URL url = new URL(site);
    HttpURLConnection connection = (HttpURLConnection)url.openConnection();
    connection.setRequestMethod("GET");
    connection.connect();

    int code = connection.getResponseCode();
    return code;
        }catch (Exception e)
        {return 0;}}
    
    
    



    public static void setMessage(String message) {
        MyRunnable.message = message;
    }


    @Override
    @PostConstruct
    public void run() {
        // TODO Auto-generated method stub
        String msg="";
        String type=lien.getTestType();
        long millis=System.currentTimeMillis();  
        java.sql.Date date=new java.sql.Date(millis);
        Time sqlTime = new Time(millis);
        
    /////boucle if that gives me the String msg
        



    
        
        
        /// enregistrer le test
        TestRapport rapp=new TestRapport(lien,msg,date,sqlTime);
        testRepository.saveTest(rapp);   
    
        
    
    
        
}

}

当我运行它时，boucle if工作正常，但当涉及到保存实体时，它会给我以下错误：

Exception in thread "pool-1-thread-3" java.lang.NullPointerException: Cannot invoke "com.example.gestion.service.TestService.saveTest(com.example.gestion.entity.TestRapport)" because "this.testRepository" is null at com.example.gestion.service.MyRunnable.run(MyRunnable.java:298) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) at java.base/java.lang.Thread.run(Thread.java:832)

我试图将@PostConstruct添加到run（）函数中，但没有成功 有人能帮我解决这个问题吗

Answer 1

@PostConstruct和@Autowired只能在托管bean中使用

要使MyRunnable成为托管bean，可以使用@Component对其进行注释