Question

我想将数据从map（request.getParameterMap（））复制到java bean。例如：

Map<String,Object> map = new HashMap<>();
map.put("payment_code", "1420956468542a2");
//...


public class PaymentLogDTO {
    @Mapping("payment_code")
    private String paymentCode;
    //...
}

但是当我在单元测试中执行map方法时，

DozerBeanMapper dozer = new DozerBeanMapper();
dozer.map(map, PaymentLogDTO.class);

失败了。异常消息是：

org.dozer.MappingException: No such field found java.util.HashMap.payment_code
at org.dozer.util.ReflectionUtils.getFieldFromBean(ReflectionUtils.java:322)
at org.dozer.util.ReflectionUtils.getFieldFromBean(ReflectionUtils.java:320)
at org.dozer.util.ReflectionUtils.getFieldFromBean(ReflectionUtils.java:320)
at org.dozer.util.ReflectionUtils.getFieldFromBean(ReflectionUtils.java:309)
at org.dozer.propertydescriptor.FieldPropertyDescriptor$ChainedPropertyDescriptor.<init>(FieldPropertyDescriptor.java:104)
at org.dozer.propertydescriptor.FieldPropertyDescriptor.<init>(FieldPropertyDescriptor.java:51)
at org.dozer.propertydescriptor.PropertyDescriptorFactory.getPropertyDescriptor(PropertyDescriptorFactory.java:64)
at org.dozer.fieldmap.FieldMap.getSrcPropertyDescriptor(FieldMap.java:385)
at org.dozer.fieldmap.FieldMap.getSrcFieldValue(FieldMap.java:86)
at org.dozer.MappingProcessor.mapField(MappingProcessor.java:294)
at org.dozer.MappingProcessor.map(MappingProcessor.java:267)
at org.dozer.MappingProcessor.mapToDestObject(MappingProcessor.java:216)
at org.dozer.MappingProcessor.createByCreationDirectiveAndMap(MappingProcessor.java:196)
at org.dozer.MappingProcessor.mapGeneral(MappingProcessor.java:170)
at org.dozer.MappingProcessor.map(MappingProcessor.java:104)
at org.dozer.MappingProcessor.map(MappingProcessor.java:99)
at org.dozer.DozerBeanMapper.map(DozerBeanMapper.java:120)
at org.springside.modules.mapper.BeanMapper.map(BeanMapper.java:36)

有什么方法可以解决这个问题吗？也就是说，我不需要使用与其属性名称相同的查询参数名称来创建java bean。

Answer 1

@Mapping annotation告诉源/目标字段，它与Map类没有任何关系......

因此，使用@Mapping（“payment_code”），它会查找字段“payement_code”，而不是地图集合中的元素。

使用dozer将数据从map复制到java bean的例外

1 个答案: