FlatFileParseException解析错误-Spring批处理
我遵循此tutorial,但收到FlatFileParseException
错误:
org.springframework.batch.item.file.FlatFileParseException:解析 资源=[类路径资源[Country.csv]]中的第1行出错, INPUT=[AA,阿鲁巴]
country.csv
AA,Aruba
BB,Baruba
这里是我的ItemReader
方法
@Bean
public ItemReader<Country> reader() {
FlatFileItemReader<Country> reader = new FlatFileItemReader<Country>();
reader.setResource(new ClassPathResource("country.csv"));
reader.setLineMapper(new DefaultLineMapper<Country>() {{
setLineTokenizer(new DelimitedLineTokenizer() {{
setNames(new String[] { "countryCode", "countryName" });
}});
setFieldSetMapper(new BeanWrapperFieldSetMapper<Country>() {{
setTargetType(Country.class);
}});
}});
return reader;
}
和Country.java
@Entity
@Table(name="Country")
public class Country {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id", nullable = false, updatable = false)
Long id;
@Column(name = "countryCode", nullable = false, updatable = false)
String countryCode;
@Column(name = "countryName", nullable = false, updatable = false)
String countryName;
public Country(String countryCode, String countryName) {
this.countryCode = countryCode;
this.countryName = countryName;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getCountryCode() {
return countryCode;
}
public void setCountryCode(String countryCode) {
this.countryCode = countryCode;
}
public String getCountryName() {
return countryName;
}
public void setCountryName(String countryName) {
this.countryName = countryName;
}
@Override
public String toString() {
return "countryCode: " + countryCode + ", countryName: " + countryName;
}
}
解决方案
此处的问题是您的Country
类中缺少默认的无参数构造函数。
BeanWrapperFieldSetMapper
将FieldSet
映射到对象。引用setTargetType(type)
Javadoc:
每次调用
mapFieldSet(FieldSet)
时,将从其默认构造函数创建此类型的对象。
因此,您需要添加默认构造函数并为属性提供相应的getter/setter。
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