我正在使用Spring Boot 2.X应用程序开发Spring Batch,实际上这是我从Git中检出的现有代码。当我运行该应用程序时,它会因为以下错误而失败,但其他人运行同样的代码却没有问题。
s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'inputItemReader' defined in file [C:\Users\XYZ\git\main\batch\CBatchProcessing\target\classes\com\main\batchprocessing\batch\reader\InputItemReader.class]: Unsatisfied dependency expressed through **constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'java.lang.String' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations**: {}
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-10-16 23:23:37.411 ERROR 2384 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
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APPLICATION FAILED TO START
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Description:
**Parameter 0 of constructor in com.main.batchprocessing.batch.reader.InputItemReader required a bean of type 'java.lang.String' that could not be found.**
Action:
Consider defining a bean of type 'java.lang.String' in your configuration.
我已检查以下内容
- 所有的Spring组件都正确地用 @Component,@Service,@Controller,@Repository等进行了注释...
- @ComponentScan和@EnableAutoConfiguration也提供了。
- 尝试在声明中使用“java.lang.String”。
代码:
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.batch.core.ExitStatus;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.core.StepExecutionListener;
import org.springframework.batch.item.file.FlatFileItemReader;
import org.springframework.batch.item.file.mapping.JsonLineMapper;
import
org.springframework.batch.item.file.separator.JsonRecordSeparatorPolicy;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.core.io.FileSystemResource;
import org.springframework.stereotype.Component;
@Component
public class InputItemReader extends FlatFileItemReader<Map<String,
Object>> implements StepExecutionListener {
@Autowired
private InputFileHeaderValidator inputFileHeaderValidator;
@Autowired
private FileAuditService fileAuditService;
private final Logger log =
LoggerFactory.getLogger(InputItemReader.class);
private java.lang.String inputFilePath;
public InputItemReader(String inputFilePath) {
setLineMapper(new JsonLineMapper());
setRecordSeparatorPolicy(new JsonRecordSeparatorPolicy());
setResource(new FileSystemResource(inputFilePath));
this.inputFilePath = inputFilePath;
}
}