推土机：列表的字符串到目前的字段级别映射

我想将DTO （所有字符串数据类型）映射到VO （包含String，int，boolean，Date）

StudentDTO

 private StudentDetailDTO student; 

StudentDetailDTO：

 private String sid; private String name; private String createDt; private String studentInd; private List feeDetails; 

FeeReceiptDTO：

 private String semisterNum; private String feeAmount; private String paidOn; 

StudentDetailVO：

 private int sid; private String name; private Date createDt; private boolean studentInd; private List feeDetails; 

FeeReceiptVO：

 private int semisterNum; private Double feeAmount; private Date paidOn; 

我正在使用DOZZER将我的DTO映射到VO String-to-Date-DozzerMapping

DozzerMapper.xml

    com.college.student.dto.StudentDTO com.college.student.vo.StudentVO  student.sid sid   student.name name   student.createDt createDt   student.studentInd studentInd   student.feeDetails feeDetails    

但是，feeDetails中的日期即， paidOn无法从String格式化为Date。

难道我做错了什么？

我是否需要为此paidOn字段编写CustomStringToDateConvertor ？

错误日志：

 ERROR [org.dozer.MappingProcessor] (http-localhost-127.0.0.1-9090-1) Field mapping error --> MapId: null Type: null Source parent class: com.college.student.dto.StudentDTO Source field name: paidOn Source field type: class java.lang.String Source field value: 01/01/2015 01:01 Dest parent class: com.college.student.vo.StudentVO Dest field name: paidOn Dest field type: java.util.Date: org.dozer.converters.ConversionException: Unable to determine time in millis of source object at org.dozer.converters.DateConverter.convert(DateConverter.java:81) [dozer-5.4.0.jar:] at org.dozer.converters.PrimitiveOrWrapperConverter.convert(PrimitiveOrWrapperConverter.java:70) [dozer-5.4.0.jar:] 

我尝试调试，我发现此日期的dateFormat在Dozzer org.dozer.converters.DateConvertor的Date转换器中显示为null

我在field-level定义了date-format ，但它不受对象List的影响。

有没有其他方法可以做到这一点？

Answer 1

因为，Dozer无法转换String-To-Date - At Field Level Mapping for a List 。

我已经为List定义了一个新的映射，即将其视为一个Object

我改变了DozerMapper.xml

    com.college.student.dto.FeeReceiptDTO com.college.student.vo.FeeReceiptVO   com.college.student.dto.StudentDTO com.college.student.vo.StudentVO  student.sid sid   student.name name   student.createDt createDt   student.studentInd studentInd   student.feeDetails feeDetails