spring - component autowired in one class but not in another

问题

I run into a strange problem where a Component injected with @Autowire is available in one class, but not in another one.

I use @Autowired in the attribute network of the classes Account and Agreement, but it is autowired only in the class Agreement but not in Account. The @ComponentScan runs over the 3 needed packages.

Here is the start class:

package com.ser.pm.tests;

@SpringBootApplication
@ComponentScan("com.ser.pm.agreement, com.ser.pm.network, com.ser.pm.address")
public class zt_Agreement {

    public static void main(String[] args) throws SignatureException, InterruptedException {

            ApplicationContext ctx = SpringApplication.run(zt_Agreement.class, args);

            Agreement oagreement = ctx.getBean(Agreement.class);

            oagreement.SubmitAgreement();

    }
}

Here is the Component Network which has to be injected in the Account->network too

package com.ser.pm.network;

@Component
public class Network implements INetwork {

    public X2network xsnetwork;

    public Network() { xsnetwork = networkFactory.createnetwork(); }

    public boolean isBound() { return (xsnetwork != null); }

    public BigInteger getNumber(byte[] addr) { return xsnetwork.getNumber(addr); }

}

In this class the field network is not autowired:

package com.ser.pm.address;

@Component
public class Account implements IFSAccount {

    @Autowired
    Network network;

    public Account(String ir_Address, String ir_Name) {}

    public Account() {}


    public BigInteger getNumber() {
        return network.getNumber(Hex.decode(this.getAddress()));
    }

}

In this class the field network is autowired correctly

package com.ser.pm.agreement;

@Component
public class Agreement {

    protected Account oFSEthAddress;

    private Trans oTx;

    private AgreementABI oABIs;

    @Autowired
    Network network;

    @Autowired
    private ApplicationContext ctx;

    public Agreement() {
        oFSEthAddress        = new Account();
        oagreementAccountOil = new FSEthagreementAccount();

    }


    public Trans JoinAgreement(String iPrivateKey) throws FScx {

        FSNetGas oFSEthNetGas = new FSNetGas();

        oFSEthAddress.setEtherum(oNetwork.onetwork);

        SCTrans oFSTx = new FSTrans();

        oFSTx.createCallTrans(_oTxParams);
        oFSTx.submit(oNetwork.onetwork);

        return oFSTx.getTrans();

    }

}

The classes Account and Agreement are in different packages but both of them are scanned with @ComponentScan, therefore I don't understand why I have problems with the autowiring in the class Account?

回答1:

You are not using spring to obtain Account instance - so spring did not get a chance to autowire it.this line :

oFSEthAddress        = new Account();

来源：https://stackoverflow.com/questions/35293726/spring-component-autowired-in-one-class-but-not-in-another

标签

java

Spring

autowired