我正在尝试编写一个读取数据库表的camel路由来获取绝对文件路径列表,然后将这些文件复制到另一个文件夹。但是,仅将文件路径创建为内容而不是原始内容。
from("timer://testDataGen?repeatCount=1")
.to("sql:" + positionSql + "?dataSource=dataSource")
.split(body())
.to("file://" + positionlistDir )
.log("Finished copying the list of Files.")
请让我知道我在这里缺少什么来将绝对文件路径转换为实际文件。
更新#1。
在代码片段下面调用pollEnrich()。但是,pollEnrich()正在复制文件的数量,该数量等于sql返回的行数,而不是根据前一个交换的文件名。
String positionListSqlOptions = "?dataSource=dataSource";
// String positionSrcDirOptions = "?noop=true&delay=500&readLockMarkerFile=false&fileName=${header.positionFileToBeCopied}";
String positionSrcDirOptions = "?noop=true&delay=500&readLockMarkerFile=false&fileName=${body}";
String positionStagingDirOptionsForWriting = "?doneFileName=${file:name}.DONE";
from("timer://testDataGen?repeatCount=1")
.to("sql:" + positionListSql + positionListSqlOptions)
.split(body())
\\ Getting the column value from the resultset which is a LinkedCaseInsensitiveMap and storing in the body
.process(new positionFeederProcessor())
.setHeader("positionFileToBeCopied", body())
.pollEnrich("file://" + positionSrcDir + positionSrcDirOptions)
// .pollEnrich().simple("file://" + positionSrcDir + positionSrcDirOptions)
.to("file://" + positionStagingDir + positionStagingDirOptionsForWriting)
.log("Finished copying the list of Files.");
我仍然无法将实际文件名传递给pollingEnrich()端点。我尝试从身体以及通过标题提取它。什么可能出错。
答案 0 :(得分:1)
好吧,最后我能够在不使用pollEnrich()的情况下完成此任务。
String positionListSqlOptions = "?dataSource=dataSource";
String positionSrcDirOptions = "?noop=true&delay=500&readLockMarkerFile=false&fileName=${header.CamelFileName}";
String positionStagingDirOptionsForWriting = "?fileName=${header.position.file.name}&doneFileName=${file:name}.DONE";
from("timer://testDataGen?repeatCount=1")
.to("sql:" + positionListSql + positionListSqlOptions)
.routeId("Copier:")
.setHeader("positionFileList", body())
.log("Creating the list of position Files ...")
.split(body())
.process(new PositionListProcessor())
.setHeader("position.file.name", body())
.setHeader("position.dir.name", constant(positionSrcDir))
.process(new PositionFileProcessor())
.choice()
.when(body().isNull())
.log("Position File not found. ${header.position.file.name}")
.otherwise()
.to("file://" + positionStagingDir + positionStagingDirOptionsForWriting)
.log("Position File Copied from Src to : " + "${header.CamelFileNameProduced} ... ${headers} ...");
以下是处理器。
public class PositionListProcessor implements Processor {
public void process(Exchange exchange) throws Exception {
LinkedCaseInsensitiveMap positionFilesResultSet = (LinkedCaseInsensitiveMap) exchange.getIn().getBody();
try {
String positionFileStr = positionFilesResultSet.get("PF_LOCATION_NEW").toString();
}
exchange.getOut().setBody(positionFileStr.trim());
} catch (Exception e) { }
} }
public class PositionFileProcessor implements Processor {
public void process(Exchange exchange) throws Exception {
String filename = exchange.getIn().getBody(String.class);
String filePath = exchange.getIn().getHeader("position.dir.name", String.class);
URI uri = new URI("file:///".concat(filePath.concat(filename)));
File file = new File(uri);
if (!file.exists()) {
logger.debug((String.format("File %s not found on %s", filename, filePath)));
exchange.getIn().setBody(null);
} else {
exchange.getIn().setBody(file);
}
} }
答案 1 :(得分:0)
file
组件在to
定义上使用时,会生成一个包含交换内容的文件,但它不会读取文件。您可以使用例如pollEnrich
处理器:
from("timer://testDataGen?repeatCount=1")
.to("sql:" + positionSql + "?dataSource=dataSource")
.split(body())
.pollEnrich().simple("file:folder?fileName=${body}")
.to("file://" + positionlistDir )
.log("Finished copying the list of Files.")