@Group注释中的minOccurs属性导致UnexpectedRecordException
我是Bean新手，当文件中有一个特定的记录类型时，我试图配置一个验证逻辑，以便出现组。例如，如果平面文件中有三条记录，如下所示。
560866
670972
57086659
我正在尝试设置以下逻辑
- 56和67行合在一起形成多行记录。
- 56和67记录可以独立于记录57，但是57记录不能没有56和67。
我成功地在@record注释中使用minOccurs属性创建了第一个验证，但无法使用一个组对56&67进行同样的验证。
请查找下面的示例代码设置。
HeaderRecord类保存56&67记录的详细信息。
@Group
public class HeaderRecord {
@Record(minOccurs = 1)
public TX56 tx56;
@Record(minOccurs = 1)
public TX67 tx67;
}RecordObject用于保存标题和行项。
public class RecordObject {
@Group(collection = List.class, minOccurs = 1)
List<HeaderRecord> headerRecords;
@Record(collection = List.class)
List<TX57> tx57s;
}
@Record(maxLength = 10, name = "TX56")
public class TX56 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "56", trim = true)
protected int id;
@Field(ordinal = 1, at = 2, length = 4, trim = true)
protected int number;
}
@Record(maxLength = 31, name = "TX67")
public class TX67 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "67", trim = true)
protected int id;
@Field(ordinal = 1, at = 2, length = 4, trim = true)
protected int number;
}
@Record(maxLength = 71, name = "TX57")
public class TX57 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "57", trim = true)
protected int id;
@Field(ordinal = 1, at = 2, length = 4, trim = true)
protected int number;
}使用上面的配置，当我尝试用下面给出的记录解析文件时，它会抛出UnexpectedRecordException。
560866
670972
57086659
堆栈跟踪：
2018-07-17 15:22:07,778 with nio-8080-exec-2 2ERROR org.apache.catalina.core.ContainerBase.Tomcat.localhost./.dispatcherServlet-Servlet.service()for servletdispatcherServletin上下文与path[]抛出的exceptionRequest处理失败；嵌套异常是到达流的org.beanio.UnexpectedRecordException:End，期望记录‘is 56’与到达流的根源org.beanio.UnexpectedRecordException:End，org.beanio.internal.parser.UnmarshallingContext.newUnsatisfiedRecordException(UnmarshallingContext.java:367)~beanio-2.1.0.jar:2.1.0，org.beanio.internal.parser.Group.unmarshal(Group.java:127)~beanio-.1.0.jar:2.1.0，org.beanio.internal.parser.DelegatingParser.unmarshal(DelegatingParser.java:39)~beanio-2.1.0.jar:2.1.0，org.beanio.internal的预期记录‘at 56’。parser.RecordCollection.unmarshal(RecordCollection.java:42)~beanio-2.1.0.jar:2.1.0 at org.beanio.internal.parser.Group.unmarshal(Group.java:118)~beanio-2.1.0.jar:2.1.0 at org.beanio.internal.parser.BeanReaderImpl.internalRead(BeanReaderImpl.java:106)~beanio-2.1.0.jar:2.1.0 at org.beanio.internal.parser.BeanReaderImpl.read(BeanReaderImpl.java:67)~beanio-2.1.0.jar:2.1.0在dk.coop.integration.fileconversion.service.sampleapplication.createFixedLengthFile(sampleapplication.java:32)~classes/:？
注意:使用上面的配置，下面的场景可以工作
- 56和67是独立的 560866 670972
- 57不能独立来 57086659:此平面文件失败，但有适当的异常。
- 56&67应该永远是一个单一的记录。 这也很好。
其他详细信息:示例Flatfile
560866
670972
560866
670972
560866
670972
57086659
57086659
57086659
57086659
52022
560866
670972
57086659
如上文所示，在平面文件中，多个头记录和TX57记录可能作为一个单一实体出现。另外，还有其他类型的记录可以介于两者之间，在这种情况下，我必须将TX56、67和57的第二次出现作为一个不同的项目。
在上面的示例中，前10条记录将形成单个recordObject，然后这些记录的第二次出现将形成第二个记录对象。很抱歉之前没有共享，但是还有另一个包装类，它包含一个recordObject列表。
下面我给出了正在工作的maven项目Github。https://github.com/Jayadeep2308/FlatFileParser
回答 1
Stack Overflow用户
发布于 2018-07-17 21:53:47
编辑：2018年8月5日更新了所有需求
我已经在类中创建了所有字段private，并假定getter+setter已经就位。
我在@Group和@Record注释上尝试了各种设置组合，所以下面的代码可能不是最优的，但应该可以工作。
首先，保存所有数据的主组(WrapperObject)：
@Group(minOccurs = 1, maxOccurs = 1)
public class WrapperObject {
@Group(minOccurs = 0, maxOccurs = 1, collection = List.class)
private List<RecordObject> recordObjectList;
@Record(minOccurs = 0, maxOccurs = -1, collection = List.class)
private List<TX52> tx52s;
}编辑：RecordObject更新以保存HeaderRecord列表，还更改了@Group值。
@Group(minOccurs = 0, maxOccurs = -1)
public class RecordObject {
@Group(minOccurs = 0, maxOccurs = -1, collection = List.class)
private List<HeaderRecord> headerRecords;
@Record(minOccurs = 0, maxOccurs = -1, collection = List.class)
private List<TX57> tx57s;
}
@Group(minOccurs = 0, maxOccurs = -1)
public class HeaderRecord {
@Record(minOccurs = 1, maxOccurs = 1)
private TX56 tx56;
@Record(minOccurs = 1, maxOccurs = 1)
private TX67 tx67;
}在单个TX记录上，我在记录标识符字段的required=true注释中添加了@Field属性。编辑：添加TX52
@Record(maxLength = 74, name = "TX52")
public class TX52 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "52", trim = true, required = true)
private int id;
@Field(ordinal = 1, at = 2, length = 3, trim = true)
private int number;
}
@Record(maxLength = 10, name = "TX56")
public class TX56 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "56", trim = true, required = true)
private int id;
@Field(ordinal = 1, at = 2, length = 4, trim = true, required = true)
private int number;
}
@Record(maxLength = 31, name = "TX67")
public class TX67 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "67", trim = true, required = true)
private int id;
@Field(ordinal = 1, at = 2, length = 4, trim = true)
private int number;
}
@Record(maxLength = 71, name = "TX57")
public class TX57 {
@Field(ordinal = 0, at = 0, length = 2, rid = true, literal = "57", trim = true, required = true)
private int id;
@Field(ordinal = 1, at = 2, length = 4, trim = true)
private int number;
}最后，我的测试代码：(编辑：更新的测试数据)
@Test
public void test() {
final StreamFactory factory = StreamFactory.newInstance();
final StreamBuilder builder = new StreamBuilder("Jaydeep23")
.format("fixedlength")
.parser(new FixedLengthParserBuilder())
.addGroup(WrapperObject.class);
factory.define(builder);
final String scenario1 = "560866\n670972\n560866\n670972\n560866\n670972";
final String scenario2 = "560866\n670972\n560866\n670972\n560866\n670972\n57086659\n57086659\n57086659\n" +
"57086659\n560866\n670972\n57086659\n560866\n670972";
// invalid
final String scenario3 = "57086659\n57086659\n57086659\n57086659\n57086659";
final String scenario4 = "52022\n52066\n52054\n52120";
final String scenario5 = scenario1;
final String scenario6 = "560866\n670972\n560866\n670972\n560866\n670972\n57086659\n57086659\n57086659\n" +
"57086659\n52021\n52022\n52023\n560866\n670972\n57086659\n52023";
final String message = scenario1;
BeanReader beanReader = null;
Object object = null;
try (final Reader in = new BufferedReader(new StringReader(message))) {
beanReader = factory.createReader("Jaydeep23", in);
beanReader.setErrorHandler(new LoggingBeanReaderErrorHandler());
while ((object = beanReader.read()) != null) {
System.out.println("Object = " + object);
}
} catch (final Exception e) {
fail(e.getMessage());
} finally {
if (beanReader != null) {
beanReader.close();
}
}
}生成此输出：(编辑：使用toString()方法)
Scenario 1 = [[Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
]null]null
Scenario 2 = [[Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
][Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
]]null
Scenario 3 - gives this error (which is correct according as TX57 is not allowed on its own:
Expected record/group 'tx56' at line 6
Scenario 4 = null[Record Type = 52, Store Number = 22
, Record Type = 52, Store Number = 66
, Record Type = 52, Store Number = 54
, Record Type = 52, Store Number = 120
]
Scenario 5 = [[Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
]null]null
Scenario 6 = [[Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
, Record Type = 56, Store Number = 866
Record Type = 67, Store Number = 972
][Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
, Record Type = 57, Store Number = 866
]][Record Type = 52, Store Number = 21
, Record Type = 52, Store Number = 22
, Record Type = 52, Store Number = 23
]希望这能有所帮助。
如果它现在对你有用，请告诉我。
https://stackoverflow.com/questions/51383474
复制相似问题
腾讯云开发者
