Question

我是Bean-IO的新手，当文件中有特定记录类型时，我试图为组的发生配置验证逻辑。例如，如果平面文件中有三个记录，如下所示。

560866
670972
57086659

我正在尝试设置以下逻辑

56行和67行一起形成多行记录
56和67记录可以独立于记录57，但是57记录不能没有56＆67。

我成功使用@record批注中的minOccurs属性创建了第一个验证，但使用组无法对56＆67执行相同的操作。

请在下面找到示例代码设置。

HeaderRecord类保存56＆67记录详细信息

@Group
public class HeaderRecord {
    @Record(minOccurs = 1)
    public TX56 tx56;
    @Record(minOccurs = 1)
    public TX67 tx67;
}

RecordObject用于保存标题和订单项

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;
}

使用上述配置，当我尝试使用下面给出的记录来解析文件时，它会抛出UnexpectedRecordException。
560866
670972
57086659

堆栈跟踪：

2018-07-17 15：22：07,778 [http-nio-8080-exec-2]错误 org.apache.catalina.core.ContainerBase。[Tomcat]。[localhost]。[/]。[dispatcherServlet] -Servlet.service（）用于带有路径[]的上下文中的servlet [dispatcherServlet] 异常[请求处理失败；嵌套异常为 org.beanio.UnexpectedRecordException：已到达流的末尾，预期记录“ tx56”]的根本原因是org.beanio.UnexpectedRecordException：End 已达到的流，预期记录为“ tx56” org.beanio.internal.parser.UnmarshallingContext.newUnsatisfiedRecordException（UnmarshallingContext.java:367）〜[beanio-2.1.0.jar：2.1.0] 在 org.beanio.internal.parser.Group.unmarshal（Group.java:127）〜[beanio-.1.0.jar：2.1.0] 在 org.beanio.internal.parser.DelegatingParser.unmarshal（DelegatingParser.java:39）〜[beanio-2.1.0.jar：2.1.0] 在 org.beanio.internal.parser.RecordCollection.unmarshal（RecordCollection.java:42）〜[beanio-2.1.0.jar：2.1.0] 在 org.beanio.internal.parser.Group.unmarshal（Group.java:118）〜[beanio-2.1.0.jar：2.1.0] 在 org.beanio.internal.parser.BeanReaderImpl.internalRead（BeanReaderImpl.java:106）〜[beanio-2.1.0.jar：2.1.0] 在 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：通过上述配置，以下情况可以正常工作

56和67独立出现
560866
670972
57无法独立出现
57086659：该平面文件因适当的异常而失败
56和67应该始终作为一个记录。
这也很好。

其他详细信息：样本平面文件

560866
670972
560866
670972
560866
670972
57086659
57086659
57086659
57086659
52022
560866
670972
57086659

如上所示，在平面文件中，可能有多个标头记录和TX57记录可以作为单个实体出现。另外，可能还会有其他类型的记录，在这种情况下，我必须将第二次出现的TX56、67和57视为不同的项目。
在上面的示例中，前10个记录将形成单个recordObject，然后这些记录的第二次出现将形成第二个记录对象。抱歉，由于您之前没有共享，但是还有另一个包装器类，其中包含一个recordObject列表。

我在下面提供了正在运行的Maven项目Github URL。 https://github.com/Jayadeep2308/FlatFileParser

Answer 1

编辑：在所有要求之后于2018年8月5日更新

我已经在类中创建了所有字段private，并假定您已经安装了getters + setters。

我尝试了@Group和@Record注释的各种设置组合，因此下面的代码可能不是最佳的，但应该可以使用。

首先存储所有数据的主要组（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已更新为保存HeaderRecord的列表，还更改了@Group的值。

@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;
}

在各个TX记录上，我在required=true批注中为您的记录标识符字段添加了@Field属性。编辑：添加了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：（ EDIT ：更新了测试数据）

@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();
    }
  }
}

生成以下输出：（编辑：使用您的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
]

希望这会有所帮助。

让我知道它是否现在对您有用。

@Group批注中的minOccurs属性导致UnexpectedRecordException

1 个答案: