我是Spring Integeration的新手。我有一个要求使用spring integeration
我的配置文件是这样的
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:si="http://www.springframework.org/schema/integration"
xmlns:file="http://www.springframework.org/schema/integration/file"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/integration
http://www.springframework.org/schema/integration/spring-integration-1.0.xsd
http://www.springframework.org/schema/integration/file
http://www.springframework.org/schema/integration/file/spring-integration-file-1.0.xsd">
<bean id="checkCSVReader"
class="com.check.wrapper">
<property name="pzMapXML" value="classpath:sampleFileFormat.xml" />
</bean>
<bean id="checkTrasnFomer"
class="com.check.checkTransfomer">
<property name="wrapper" ref="checkCSVReader" />
</bean>
<bean id="fileErrorProcessor"
class="com.check.ErrorChannelWriter">
</bean>
<bean id="listToStringTrans"
class="com.check.ListToStringTransfomer"></bean>
<bean id="validation"
class="com.check.Validation"/>
<file:inbound-channel-adapter directory="file://D:\check\soruce" prevent-duplicates="false"
auto-create-directory="true" channel="readChannel" >
<si:poller id="Poller">
<si:interval-trigger interval="10000" />
</si:poller>
</file:inbound-channel-adapter>
<si:channel id="readChannel" />
<si:chain input-channel="readChannel" output-channel="processChannel">
<si:header-enricher error-channel="errorFile" />
<file:file-to-string-transformer />
<si:transformer ref="checkTrasnFomer" method="transform" />
<si:service-activator ref="validation"
method="validate" />
</si:chain>
<si:channel id="processChannel" />
<si:transformer ref="listToStringTrans" method="transformList"
input-channel="processChannel" output-channel="finalOut" />
<si:channel id="finalOut" />
<file:outbound-channel-adapter id="checkSuccFileOutBound"
auto-create-directory="true" delete-source-files="true"
directory="file://D:\check\success" channel="finalOut">
</file:outbound-channel-adapter>
<si:channel id="errorFile" />
<si:transformer ref="fileErrorProcessor"
input-channel="errorFile" output-channel="errorChannel" method="transformError" />
<file:outbound-channel-adapter id="errorChannel"
directory="file://D:\check\error" delete-source-files="true"
/>
<si:channel id="checkFileErr" />
</beans>
我的checkFlatPackCVSParserWrapper类是
public class checkFlatPackCVSParserWrapper {
private static final Log LOG = LogFactory.getLog("checkFlatPackCVSParserWrapper");
private Resource pzMapXML;
private char delimiter = ',';
private char qualifier = '"';
private boolean ignoreFirstRecord = false;
public Resource getPzMapXML() {
return pzMapXML;
}
public void setPzMapXML(Resource pzMapXML) {
this.pzMapXML = pzMapXML;
}
public char getDelimiter() {
return delimiter;
}
public void setDelimiter(char delimiter) {
this.delimiter = delimiter;
}
public char getQualifier() {
return qualifier;
}
public void setQualifier(char qualifier) {
this.qualifier = qualifier;
}
public boolean isIgnoreFirstRecord() {
return ignoreFirstRecord;
}
public void setIgnoreFirstRecord(boolean ignoreFirstRecord) {
this.ignoreFirstRecord = ignoreFirstRecord;
}
public Parser getParser(String csv) {
if(LOG.isDebugEnabled())
LOG.debug("getParser: " + csv);
Parser result = null;
try {
result = DefaultParserFactory.getInstance().newDelimitedParser(
pzMapXML.getInputStream(), //xml column mapping
new ByteArrayInputStream(csv.getBytes()), //txt file to parse
delimiter, //delimiter
qualifier, //text qualfier
ignoreFirstRecord);
}catch (Exception e) {
if(LOG.isDebugEnabled())
LOG.debug("Unable to read file: " + e );
throw new RuntimeException("File Parse exception");
}
return result;
}
}
sampleFileFormat.xml是
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE PZMAP SYSTEM "flatpack.dtd" >
<PZMAP>
<COLUMN name="FIRSTNAME" />
<COLUMN name="LASTNAME" />
</PZMAP>
and checkTransfomer is
public class checkTransfomer {
private static final Log LOG = LogFactory.getLog(checkTransfomer.class);
private CheckFlatPackCVSParserWrapper wrapper;
public String transform(String csv) {
Parser parser = wrapper.getParser(csv);
if(LOG.isDebugEnabled()) {
LOG.debug("Parser is: " + parser);
}
DataSet ds = parser.parse();
ArrayList<Check> list = new ArrayList<Check>();
while(ds.next()) {
Check check= new Check();
check.setFirstName(ds.getString("FIRSTNAME"));
check.setLastName(ds.getString("LASTNAME"));
if(LOG.isDebugEnabled()) {
LOG.debug("Bean value is: " + bean);
}
list.add(bean);
}
if(LOG.isDebugEnabled()) {
LOG.debug("Records fetched is: " + list.size());
}
return list.toString();
}
public CheckFlatPackCVSParserWrapper getWrapper() {
return wrapper;
}
public void setWrapper(CheckFlatPackCVSParserWrapper wrapper) {
this.wrapper = wrapper;
}
我的ErrorChannelWriter是
public class ErrorChannelWriter {
public static final Log LOG = LogFactory.getLog(ErrorChannelWriter.class);
public Message<?> transformError(ErrorMessage errorMessage) {
if (LOG.isDebugEnabled()) {
LOG.debug("Transforming errorMessage is: " + errorMessage);
}
return ((MessagingException) errorMessage.getPayload())
.getFailedMessage();
}
}
我的验证类是
com.check.Validation
public class Validation
{
void validation(CheckCheck)
{
if(Check.getFirstName().equals("maya"))
{
throw new RuntimeException("Name Already exist");
}
}
}
我的ListToStringTransfomer是
public class ListToStringTransfomer {
private static final Log LOG=LogFactory.getLog(ListToStringTransfomer.class);
public String transformList(List<IssueAppBean> list) {
return list.toString();
}
}
我的文件包含一个字段而不是两个字段
> maya
这里我的文件格式错误，因此记录正在移动到错误文件夹。但是没有错误消息。当文件格式不正确时，如何添加错误消息（TOO FEW COLUMNS WANTED：2 GOT：1）。 我的要求是在我的错误文件中应该加入
maya -TOO少数专栏通缉：2 GOT：1或（任何错误信息）
请给我任何解决方案
答案 0 :(得分：1)
我认为您不应该通过错误通道来解决此要求。主要原因是在这种情况下无效输入是预期的情况。 errorChannel是Spring Integration在端点中发生意外异常时发送消息的通道。
如果在验证失败时向邮件添加一些标头，则可以根据该标头进行路由，并在那里记录失败消息。然后，您可以将错误消息发送到日志文件或您自己的任何内容。