模板設計模式彈簧配置問題

Question

我正面臨模板設計模式的春天配置問題。

App.java

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations = { "Spring-Module.xml" }) 
public class App { 

    @Autowired 
    @Qualifier("userExecutor") 
    private IExecutor userExecutor; 

    public void print(){ 
     System.out.println(userExecutor.execute()); 
    } 
} 

彈簧Module.xml

<?xml version="1.0" encoding="UTF-8"?> 
<beans default-lazy-init="true" 
    xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
     http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
     http://www.springframework.org/schema/context 
     http://www.springframework.org/schema/context/spring-context-4.2.xsd"> 

    <context:annotation-config /> 
    <context:component-scan base-package="com.ravi" /> 

</beans> 

IExecutor.java

public interface IExecutor { 
    public Object execute(); 
} 

AbstractExecutor.java

public abstract class AbstractExecutor implements IExecutor { 

    private IInputPropertyBean inputObject; 

    private IOutputPropertyBean outputObject; 

    public abstract IAttribute getInputValues(Object inputObject); 

    public abstract IAttribute process(IAttribute inputPropertyBean); 

    public abstract IOutputPropertyBean getOutputValues(IAttribute outputPropertyBean, IOutputPropertyBean outObject); 

    public AbstractExecutor(IInputPropertyBean inputObject, IOutputPropertyBean outputObject) { 
     this.inputObject = inputObject; 
     this.outputObject = outputObject; 
    } 

    @Override 
    public Object execute() { 
     IAttribute inputAttribute = getInputValues(inputObject); 
     IAttribute outputAttribute = process(inputAttribute); 
     outputObject = (IOutputPropertyBean) getOutputValues(outputAttribute, outputObject); 
     return outputObject; 
    } 

} 

AbstractUserExecutor.java

public abstract class AbstractUserExecutor extends AbstractExecutor { 

    public AbstractUserExecutor(IInputPropertyBean inputObject, IOutputPropertyBean outputObject) { 
     super(inputObject, outputObject); 
    } 

    @Override 
    public IAttribute getInputValues(Object inputObject) { 
     System.out.println("getInputValues"); 
     return null; 
    } 

    @Override 
    public IOutputPropertyBean getOutputValues(IAttribute outputPropertyBean, IOutputPropertyBean outObject) { 
     System.out.println("getOutputValues"); 
     return null; 
    } 

} 

UserExecutor.java

@Repository("userExecutor") 
public class UserExecutor extends AbstractUserExecutor { 

    @Autowired 
    @Qualifier("userInput") 
    private IInputPropertyBean inputObject; 

    @Autowired 
    @Qualifier("userOutput") 
    private IOutputPropertyBean outputObject; 


    public UserExecutor(IInputPropertyBean inputObject, IOutputPropertyBean outputObject) { 
     super(inputObject, outputObject); 
    } 

    @Override 
    public IAttribute process(IAttribute inputPropertyBean) { 
     System.out.println("process"); 
     return null; 
    } 
} 

IInputPropertyBean.java

public interface IInputPropertyBean {} 

IOutputPropertyBean.java

public interface IOutputPropertyBean { } 

UserInput.java

@Component("userInput") 
public class UserInput implements IInputPropertyBean { 

    private String name; 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

} 

UserOutput.java

@Component("userOutput") 
public class UserOutput implements IOutputPropertyBean { 

    private String username; 

    public String getUsername() { 
     return username; 
    } 

    public void setUsername(String username) { 
     this.username = username; 
    } 
} 

IAttribute.java

public interface IAttribute { } 

用戶的.java

@Component 
public class User implements IAttribute{ 
} 

Answer 1

我試圖在我的本地環境代碼。我遇到的問題是缺少UserExecutor,AbstractUserExecutor和AbstractExecutor類的默認構造函數。在添加它們的工作後。

所以我認爲你的問題缺少默認的構造函數。嘗試添加它們，讓我知道它是否有效。