1、SpringBatch分别有读(reader)、处理(processor)、写(writer)、tasklet处理器。
2、SpringBatch之所以给我们开这么多适配器原因是让我们把既有的服务作为参数传到适配器里面，避免开发重复代码。不得不说SpringBatch开发人员想的真周到。
3、SpringBatch适配器都有三个公共的方法：
演示MethodInvokingTaskletAdapter适配器
1、创建Job配置TaskletAdapterConfiguration
@Configuration
@EnableBatchProcessing
public class TaskletAdapterConfiguration {
@Autowired
private JobBuilderFactory jobBuilderFactory;
@Autowired
private StepBuilderFactory stepBuilderFactory;
@Autowired
public PeopleService peopleService;
@Bean
public Job taskletAdapterJob() {
return jobBuilderFactory.get("taskletAdapterJob")
.start(taskletAdapterStep())
.build();
}
@Bean
public Step taskletAdapterStep() {
return stepBuilderFactory.get("taskletAdapterStep")
.tasklet(methodInvokingTaskletAdapter())
.build();
}
@Bean
public MethodInvokingTaskletAdapter methodInvokingTaskletAdapter() {
MethodInvokingTaskletAdapter adapter = new MethodInvokingTaskletAdapter();
adapter.setTargetObject(peopleService);
adapter.setTargetMethod("upperCase");
adapter.setArguments(new Object[]{new People("lee","10","北京","1233")});
return adapter;
}
}
2、Tasklet适配器执行的目标类和方法
@Service
public class PeopleService {
public People upperCase(People people) {
People p = new People();
p.setName(people.getName().toUpperCase(Locale.ROOT));
p.setAdress(people.getAdress().toUpperCase(Locale.ROOT));
p.setAge(people.getAge());
p.setIdCard(people.getIdCard());
System.out.println("p：" + p);
return p;
}
}
3、适配器执行目标方法一定要先看看有没有参数，如果有参数一定要把此方法(setArguments)设置上，否则会报"No matching arguments found for method"异常
4、执行结果如图所示：
