java.lang.Object
- org.springframework.batch.item.ItemStreamSupport
- - org.springframework.batch.item.support.AbstractItemStreamItemReader<org.springframework.core.io.Resource>
  - - org.springframework.batch.item.file.ResourcesItemReader

所有已实现的接口:
ItemReader<org.springframework.core.io.Resource>, ItemStream, ItemStreamReader<org.springframework.core.io.Resource>
```
public class ResourcesItemReader
extends AbstractItemStreamItemReader<org.springframework.core.io.Resource>
```
ItemReader which produces Resource instances from an array. This can be used conveniently with a configuration entry that injects a pattern (e.g. mydir/*.txt, which can then be converted by Spring to an array of Resources by the ApplicationContext.

Thread-safe between calls to open(ExecutionContext). The ExecutionContext is not accurate in a multi-threaded environment, so do not rely on that data for restart (i.e. always open with a fresh context).
从以下版本开始:
2.1
作者:
Dave Syer, Mahmoud Ben Hassine
另请参阅:
ResourceArrayPropertyEditor

构造器概要
构造器
构造器说明
ResourcesItemReader()

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`void`	`open(ExecutionContext executionContext)`	No-op.
`org.springframework.core.io.Resource`	`read()`	Increments a counter and returns the next `Resource` instance from the input, or `null` if none remain.
`void`	`setResources(org.springframework.core.io.Resource[] resources)`	The resources to serve up as items.
`void`	`update(ExecutionContext executionContext)`	Return empty `ExecutionContext`.

从类继承的方法 org.springframework.batch.item.ItemStreamSupport
close, getExecutionContextKey, setExecutionContextName, setName

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.springframework.batch.item.ItemStream
close

- 构造器详细资料
  - ResourcesItemReader
```
public ResourcesItemReader()
```
- 方法详细资料
  - setResources
```
public void setResources(org.springframework.core.io.Resource[] resources)
```
    The resources to serve up as items. Hint: use a pattern to configure.
    参数:
    resources - the resources
  - read
```
@Nullable
public org.springframework.core.io.Resource read()
                                          throws java.lang.Exception
```
    Increments a counter and returns the next Resource instance from the input, or null if none remain.
    返回:
    T the item to be processed or null if the data source is exhausted
    抛出:
    ParseException - if there is a problem parsing the current record (but the next one may still be valid)
    NonTransientResourceException - if there is a fatal exception in the underlying resource. After throwing this exception implementations should endeavour to return null from subsequent calls to read.
    UnexpectedInputException - if there is an uncategorised problem with the input data. Assume potentially transient, so subsequent calls to read might succeed.
    java.lang.Exception - if an there is a non-specific error.
  - open
```
public void open(ExecutionContext executionContext)
          throws ItemStreamException
```
    从类复制的说明: ItemStreamSupport
    No-op.
    指定者:
    open 在接口中 ItemStream
    覆盖:
    open 在类中 ItemStreamSupport
    参数:
    executionContext - current step's ExecutionContext. Will be the executionContext from the last run of the step on a restart.
    抛出:
    ItemStreamException
    另请参阅:
    ItemStream.open(ExecutionContext)
  - update
```
public void update(ExecutionContext executionContext)
            throws ItemStreamException
```
    从类复制的说明: ItemStreamSupport
    Return empty ExecutionContext.
    指定者:
    update 在接口中 ItemStream
    覆盖:
    update 在类中 ItemStreamSupport
    参数:
    executionContext - to be updated
    抛出:
    ItemStreamException
    另请参阅:
    ItemStream.update(ExecutionContext)

类 ResourcesItemReader

构造器概要

方法概要

从类继承的方法 org.springframework.batch.item.ItemStreamSupport

从类继承的方法 java.lang.Object

从接口继承的方法 org.springframework.batch.item.ItemStream

构造器详细资料

ResourcesItemReader

方法详细资料

setResources

read

open

update