类 FlatFileItemReader<T>

字段详细资料

• DEFAULT_CHARSET

  public static final java.lang.String DEFAULT_CHARSET

• DEFAULT_COMMENT_PREFIXES

  public static final java.lang.String[] DEFAULT_COMMENT_PREFIXES

构造器详细资料

• FlatFileItemReader

  public FlatFileItemReader()

方法详细资料

• setStrict

  public void setStrict​(boolean strict)

  In strict mode the reader will throw an exception on AbstractItemCountingItemStreamItemReader.open(org.springframework.batch.item.ExecutionContext) if the input resource does not exist.

  参数:

  strict - true by default

• setSkippedLinesCallback

  public void setSkippedLinesCallback​(LineCallbackHandler skippedLinesCallback)

  参数:

  skippedLinesCallback - will be called for each one of the initial skipped lines before any items are read.

• setLinesToSkip

  public void setLinesToSkip​(int linesToSkip)

  Public setter for the number of lines to skip at the start of a file. Can be used if the file contains a header without useful (column name) information, and without a comment delimiter at the beginning of the lines.

  参数:

  linesToSkip - the number of lines to skip

• setLineMapper

  public void setLineMapper​(LineMapper<T> lineMapper)

  Setter for line mapper. This property is required to be set.

  参数:

  lineMapper - maps line to item

• setEncoding

  public void setEncoding​(java.lang.String encoding)

  Setter for the encoding for this input source. Default value is DEFAULT_CHARSET.

  参数:

  encoding - a properties object which possibly contains the encoding for this input file;

• setBufferedReaderFactory

  public void setBufferedReaderFactory​(BufferedReaderFactory bufferedReaderFactory)

  Factory for the BufferedReader that will be used to extract lines from the file. The default is fine for plain text files, but this is a useful strategy for binary files where the standard BufferedReader from java.io is limiting.

  参数:

  bufferedReaderFactory - the bufferedReaderFactory to set

• setComments

  public void setComments​(java.lang.String[] comments)

  Setter for comment prefixes. Can be used to ignore header lines as well by using e.g. the first couple of column names as a prefix. Defaults to DEFAULT_COMMENT_PREFIXES.

  参数:

  comments - an array of comment line prefixes.

• setResource

  public void setResource​(org.springframework.core.io.Resource resource)

  Public setter for the input resource.

  指定者:

  setResource 在接口中 ResourceAwareItemReaderItemStream<T>

• setRecordSeparatorPolicy

  public void setRecordSeparatorPolicy​(RecordSeparatorPolicy recordSeparatorPolicy)

  Public setter for the recordSeparatorPolicy. Used to determine where the line endings are and do things like continue over a line ending if inside a quoted string.

  参数:

  recordSeparatorPolicy - the recordSeparatorPolicy to set

• doRead

  protected T doRead()
              throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Read next item from input.

  指定者:

  doRead 在类中 AbstractItemCountingItemStreamItemReader<T>

  返回:

  string corresponding to logical record according to setRecordSeparatorPolicy(RecordSeparatorPolicy) (might span multiple lines in file).

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework

• doClose

  protected void doClose()
                  throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Close the resources opened in AbstractItemCountingItemStreamItemReader.doOpen().

  指定者:

  doClose 在类中 AbstractItemCountingItemStreamItemReader<T>

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework

• doOpen

  protected void doOpen()
                 throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Open resources necessary to start reading input.

  指定者:

  doOpen 在类中 AbstractItemCountingItemStreamItemReader<T>

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework

• afterPropertiesSet

  public void afterPropertiesSet()
                          throws java.lang.Exception

  指定者:

  afterPropertiesSet 在接口中 org.springframework.beans.factory.InitializingBean

  抛出:

  java.lang.Exception

• jumpToItem

  protected void jumpToItem​(int itemIndex)
                     throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Move to the given item index. Subclasses should override this method if there is a more efficient way of moving to given index than re-reading the input using AbstractItemCountingItemStreamItemReader.doRead().

  覆盖:

  jumpToItem 在类中 AbstractItemCountingItemStreamItemReader<T>

  参数:

  itemIndex - index of item (0 based) to jump to.

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework