java.lang.Object
- org.springframework.batch.core.JobParametersBuilder

```
public class JobParametersBuilder
extends java.lang.Object
```
Helper class for creating JobParameters. Useful because all JobParameter objects are immutable, and must be instantiated separately to ensure type safety. Once created, it can be used in the same was a java.lang.StringBuilder (except, order is irrelevant), by adding various parameter types and creating a valid JobParameters once finished.

Using the identifying flag indicates if the parameter will be used in the identification of a JobInstance. That flag defaults to true.
从以下版本开始:
1.0
作者:
Lucas Ward, Michael Minella, Glenn Renfro, Mahmoud Ben Hassine
另请参阅:
JobParameters, JobParameter

构造器概要

构造器
构造器	说明
`JobParametersBuilder()`	Default constructor.
`JobParametersBuilder(java.util.Properties properties)`	Constructor to add conversion capabilities to support JSR-352.
`JobParametersBuilder(JobExplorer jobExplorer)`
`JobParametersBuilder(JobParameters jobParameters)`	Copy constructor.
`JobParametersBuilder(JobParameters jobParameters, JobExplorer jobExplorer)`	Copy constructor.

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
`JobParametersBuilder`	`addDate(java.lang.String key, java.util.Date parameter)`	Add a new identifying `Date` parameter for the given key.
`JobParametersBuilder`	`addDate(java.lang.String key, java.util.Date parameter, boolean identifying)`	Add a new `Date` parameter for the given key.
`JobParametersBuilder`	`addDouble(java.lang.String key, java.lang.Double parameter)`	Add a new identifying Double parameter for the given key.
`JobParametersBuilder`	`addDouble(java.lang.String key, java.lang.Double parameter, boolean identifying)`	Add a new Double parameter for the given key.
`JobParametersBuilder`	`addJobParameters(JobParameters jobParameters)`	Copy job parameters into the current state.
`JobParametersBuilder`	`addLong(java.lang.String key, java.lang.Long parameter)`	Add a new identifying Long parameter for the given key.
`JobParametersBuilder`	`addLong(java.lang.String key, java.lang.Long parameter, boolean identifying)`	Add a new Long parameter for the given key.
`JobParametersBuilder`	`addParameter(java.lang.String key, JobParameter jobParameter)`	Add a new `JobParameter` for the given key.
`JobParametersBuilder`	`addString(java.lang.String key, java.lang.String parameter)`	Add a new identifying String parameter for the given key.
`JobParametersBuilder`	`addString(java.lang.String key, java.lang.String parameter, boolean identifying)`	Add a new String parameter for the given key.
`JobParametersBuilder`	`getNextJobParameters(Job job)`	Initializes the `JobParameters` based on the state of the `Job`.
`JobParameters`	`toJobParameters()`	Conversion method that takes the current state of this builder and returns it as a JobParameters object.

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

- 构造器详细资料
  - JobParametersBuilder
```
public JobParametersBuilder()
```
    Default constructor. Initializes the builder with empty parameters.
  - JobParametersBuilder
```
public JobParametersBuilder(JobExplorer jobExplorer)
```
    参数:
    jobExplorer - JobExplorer used for looking up previous job parameter information
  - JobParametersBuilder
```
public JobParametersBuilder(JobParameters jobParameters)
```
    Copy constructor. Initializes the builder with the supplied parameters.
    参数:
    jobParameters - JobParameters instance used to initialize the builder.
  - JobParametersBuilder
```
public JobParametersBuilder(java.util.Properties properties)
```
    Constructor to add conversion capabilities to support JSR-352. Per the spec, it is expected that all keys and values in the provided Properties instance are Strings
    参数:
    properties - the job parameters to be used
  - JobParametersBuilder
```
public JobParametersBuilder(JobParameters jobParameters,
                            JobExplorer jobExplorer)
```
    Copy constructor. Initializes the builder with the supplied parameters.
    参数:
    jobParameters - JobParameters instance used to initialize the builder.
    jobExplorer - JobExplorer used for looking up previous job parameter information
- 方法详细资料
  - addString
```
public JobParametersBuilder addString(java.lang.String key,
                                      java.lang.String parameter)
```
    Add a new identifying String parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    返回:
    a reference to this object.
  - addString
```
public JobParametersBuilder addString(java.lang.String key,
                                      java.lang.String parameter,
                                      boolean identifying)
```
    Add a new String parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    identifying - - indicates if the parameter is used as part of identifying a job instance
    返回:
    a reference to this object.
  - addDate
```
public JobParametersBuilder addDate(java.lang.String key,
                                    java.util.Date parameter)
```
    Add a new identifying Date parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    返回:
    a reference to this object.
  - addDate
```
public JobParametersBuilder addDate(java.lang.String key,
                                    java.util.Date parameter,
                                    boolean identifying)
```
    Add a new Date parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    identifying - - indicates if the parameter is used as part of identifying a job instance
    返回:
    a reference to this object.
  - addLong
```
public JobParametersBuilder addLong(java.lang.String key,
                                    java.lang.Long parameter)
```
    Add a new identifying Long parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    返回:
    a reference to this object.
  - addLong
```
public JobParametersBuilder addLong(java.lang.String key,
                                    java.lang.Long parameter,
                                    boolean identifying)
```
    Add a new Long parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    identifying - - indicates if the parameter is used as part of identifying a job instance
    返回:
    a reference to this object.
  - addDouble
```
public JobParametersBuilder addDouble(java.lang.String key,
                                      java.lang.Double parameter)
```
    Add a new identifying Double parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    返回:
    a reference to this object.
  - addDouble
```
public JobParametersBuilder addDouble(java.lang.String key,
                                      java.lang.Double parameter,
                                      boolean identifying)
```
    Add a new Double parameter for the given key.
    参数:
    key - - parameter accessor.
    parameter - - runtime parameter
    identifying - - indicates if the parameter is used as part of identifying a job instance
    返回:
    a reference to this object.
  - toJobParameters
```
public JobParameters toJobParameters()
```
    Conversion method that takes the current state of this builder and returns it as a JobParameters object.
    返回:
    a valid JobParameters object.
  - addParameter
```
public JobParametersBuilder addParameter(java.lang.String key,
                                         JobParameter jobParameter)
```
    Add a new JobParameter for the given key.
    参数:
    key - - parameter accessor
    jobParameter - - runtime parameter
    返回:
    a reference to this object.
  - addJobParameters
```
public JobParametersBuilder addJobParameters(JobParameters jobParameters)
```
    Copy job parameters into the current state.
    参数:
    jobParameters - parameters to copy in
    返回:
    a reference to this object.
  - getNextJobParameters
```
public JobParametersBuilder getNextJobParameters(Job job)
```
    Initializes the JobParameters based on the state of the Job. This should be called after all parameters have been entered into the builder. All parameters already set on this builder instance will be appended to those retrieved from the job incrementer, overriding any with the same key (Same behaviour as CommandLineJobRunner with "-next" option and JobOperator.startNextInstance(String))
    参数:
    job - the job for which the JobParameters are being constructed.
    返回:
    a reference to this object.
    从以下版本开始:
    4.0

类 JobParametersBuilder

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

JobParametersBuilder

JobParametersBuilder

JobParametersBuilder

JobParametersBuilder

JobParametersBuilder

方法详细资料

addString

addString

addDate

addDate

addLong

addLong

addDouble

addDouble

toJobParameters

addParameter

addJobParameters

getNextJobParameters