Question

我定义了这条简单的路线：
from("file:" + recoverableErrorsFolder +"? delete=true&consumer.initialDelay=0&consumer.delay="+redeliveryDelay) .to("bean:myBean");

我以这种方式定义myBean：

public  void process(Exchange exchange)  throws Exception {
    ReceivedPlazasInfo receiv =exchange.getIn().getBody(ReceivedPlazasInfo.class);
}

但是当我运行它时，处理过的文件永远不会被删除。如果我将过程功能更改为

String receiv =exchange.getIn().getBody(String.class);

它工作正常。

会发生什么？

ReceivedPlazasInfo类如下所示：

@XmlRootElement( name = "plazas" )
@XmlAccessorType(XmlAccessType.FIELD)
public class ReceivedPlazasInfo {`

@XmlElement( name = "parking" )
private List<ReceivedParkingInfo> parkingResponse;


/**
 * @return list of parkings
 */
public List<ReceivedParkingInfo> getParkingResponse() {
    return parkingResponse;
}

/**
 * @param parkingResponse : list of parkings
 */
public void setParkingResponse(ArrayList<ReceivedParkingInfo> parkingResponse) {
    this.parkingResponse = parkingResponse;
}

}

@Entity
@XmlRootElement( name  = "parking" )
@XmlAccessorType(XmlAccessType.FIELD)
public class ReceivedParkingInfo {`

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

@XmlElement( name = "idParking" )
private String idParking;

@XmlElement( name = "idType" )
private String idType;

@XmlElement( name = "numPlazas" )
private Integer numPlazas;

@XmlElement( name = "timeStamp" )
private String timeStamp;

/**
 * @return idParking
 */ 
public String getIdParking() {
    return idParking;
}

/**
 * @param idParking
 */
public void setIdParking(String idParking) {
    this.idParking = idParking;
}

/**
 * @return idType
 */
public String getIdType() {
    return idType;
}

/**
 * @param idType
 */
public void setIdType(String idType) {
    this.idType = idType;
}

/**
 * @return numPlazas
 */
public Integer getNumPlazas() {
    return numPlazas;
}

/**
 * @param numPlazas
 */
public void setNumPlazas(Integer numPlazas) {
    this.numPlazas = numPlazas;
}

/** 
 * @return timeStamp
 */
public String getTimeStamp() {
    return timeStamp;
}

/**
 * @param timeStamp
 */
public void setTimeStamp(String timeStamp) {
    this.timeStamp = timeStamp;
}
}

Answer 1

当您将POJO类与JAXB注释（例如ReceivedParkingInfo一起使用）并且希望让Apache Camel能够通过JAXB自动将XML转换为此POJO时，您需要添加camel-jaxb到类路径。

这可以解释在您尝试

时永远不会删除该文件

ReceivedPlazasInfo receiv =exchange.getIn().getBody(ReceivedPlazasInfo.class);

因为类路径上没有camel-jaxb，所以Camel无法将文件转换为此POJO类，而是返回null，或者抛出有关转换的异常。

所以你应该记得将camel-jaxb添加到类路径中。

来自（文件）的Apache camel不会删除已处理的

1 个答案: