在另一个bean的构造函数中引用时，@ Autowired bean为null
||
下面显示的是我尝试引用我的ApplicationProperties bean的代码片段。当我从构造函数引用它时，它为null，但是从另一个方法引用时，它很好。到目前为止，在其他类中使用此自动装配的bean都没有问题。但这是我第一次尝试在另一个类的构造函数中使用它。
在下面的代码段中，当从构造函数调用时，applicationProperties为null，但在convert方法中引用时，则为null。我在想什么
@Component
public class DocumentManager implements IDocumentManager {
private Log logger = LogFactory.getLog(this.getClass());
private OfficeManager officeManager = null;
private ConverterService converterService = null;
@Autowired
private IApplicationProperties applicationProperties;
// If I try and use the Autowired applicationProperties bean in the constructor
// it is null ?
public DocumentManager() {
startOOServer();
}
private void startOOServer() {
if (applicationProperties != null) {
if (applicationProperties.getStartOOServer()) {
try {
if (this.officeManager == null) {
this.officeManager = new DefaultOfficeManagerConfiguration()
.buildOfficeManager();
this.officeManager.start();
this.converterService = new ConverterService(this.officeManager);
}
} catch (Throwable e){
logger.error(e);
}
}
}
}
public byte[] convert(byte[] inputData, String sourceExtension, String targetExtension) {
byte[] result = null;
startOOServer();
...
@Component
public class ApplicationProperties implements IApplicationProperties {
/* Use the appProperties bean defined in WEB-INF/applicationContext.xml
* which in turn uses resources/server.properties
*/
@Resource(name=\"appProperties\")
private Properties appProperties;
public Boolean getStartOOServer() {
String val = appProperties.getProperty(\"startOOServer\", \"false\");
if( val == null ) return false;
val = val.trim();
return val.equalsIgnoreCase(\"true\") || val.equalsIgnoreCase(\"on\") || val.equalsIgnoreCase(\"yes\");
}
没有找到相关结果
已邀请:
2 个回复
讹巳漓把备
注释该方法。久纳禾澎
@Autowired public DocumentManager(IApplicationProperties applicationProperties) { this.applicationProperties = applicationProperties; startOOServer(); }