java.lang.Object
- org.springframework.batch.item.ItemStreamSupport
- - org.springframework.batch.item.support.AbstractItemStreamItemReader<T>
  - - org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader<T>
    - - org.springframework.batch.item.json.JsonItemReader<T>

类型参数:
T - the type of json objects to read
所有已实现的接口:
ResourceAwareItemReaderItemStream<T>, ItemReader<T>, ItemStream, ItemStreamReader<T>
```
public class JsonItemReader<T>
extends AbstractItemCountingItemStreamItemReader<T>
implements ResourceAwareItemReaderItemStream<T>
```
ItemStreamReader implementation that reads Json objects from a Resource having the following format:
[ { // JSON object }, { // JSON object } ]
The implementation is not thread-safe.
从以下版本开始:
4.1
作者:
Mahmoud Ben Hassine

构造器概要
构造器
构造器说明
JsonItemReader(org.springframework.core.io.Resource resource, JsonObjectReader<T> jsonObjectReader)
Create a new JsonItemReader instance.

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
`protected void`	`doClose()`	Close the resources opened in `AbstractItemCountingItemStreamItemReader.doOpen()`.
`protected void`	`doOpen()`	Open resources necessary to start reading input.
`protected T`	`doRead()`	Read next item from input.
`void`	`setJsonObjectReader(JsonObjectReader<T> jsonObjectReader)`	Set the `JsonObjectReader` to use to read and map Json fragments to domain objects.
`void`	`setResource(org.springframework.core.io.Resource resource)`
`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.

从类继承的方法 org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader
close, getCurrentItemCount, isSaveState, jumpToItem, open, read, setCurrentItemCount, setMaxItemCount, setSaveState, update

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

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

- 构造器详细资料
  - JsonItemReader
```
public JsonItemReader(org.springframework.core.io.Resource resource,
                      JsonObjectReader<T> jsonObjectReader)
```
    Create a new JsonItemReader instance.
    参数:
    resource - the input json resource
    jsonObjectReader - the json object reader to use
- 方法详细资料
  - setJsonObjectReader
```
public void setJsonObjectReader(JsonObjectReader<T> jsonObjectReader)
```
    Set the JsonObjectReader to use to read and map Json fragments to domain objects.
    参数:
    jsonObjectReader - the json object reader to use
  - 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
  - setResource
```
public void setResource(org.springframework.core.io.Resource resource)
```
    指定者:
    setResource 在接口中 ResourceAwareItemReaderItemStream<T>
  - 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:
    an item or null if the data source is exhausted
    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
  - 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

类 JsonItemReader<T>

构造器概要

方法概要

从类继承的方法 org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader

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.ItemReader

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

构造器详细资料

JsonItemReader

方法详细资料

setJsonObjectReader

setStrict

setResource

doRead

doOpen

doClose