RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring/spring-dozer.xml"})
@TransactionConfiguration(defaultRollback = false)
public class DozerTest extends TestCase {
@Autowired
Mapper mapper;
@Test
public void testNotSameAttributeMapping() {
NotSameAttributeA src = new NotSameAttributeA();
src.setId(007);
src.setName("邦德");
src.setDate(new Date());
NotSameAttributeB desc = mapper.map(src, NotSameAttributeB.class);
Assert.assertNotNull(desc);
}
}
运行一下单元测试，绿灯通过。
Dozer 支持的数据类型转换
Dozer 可以自动做数据类型转换。当前，Dozer 支持以下数据类型转换（都是双向的）
Primitive to Primitive Wrapper
原型(int、long 等)和原型包装类(Integer、Long)
Primitive to Custom Wrapper
原型和定制的包装
Primitive Wrapper to Primitive Wrapper
原型包装类和包装类
Primitive to Primitive
原型和原型
Complex Type to Complex Type
复杂类型和复杂类型
String to Primitive
字符串和原型
String to Primitive Wrapper
字符串和原型包装类
String to Complex Type if the Complex Type contains a String constructor
字符串和有字符串构造器的复杂类型（类）
String to Map
字符串和 Map
Collection to Collection
集合和集合
Collection to Array
集合和数组
Map to Complex Type
Map 和复杂类型
Map to Custom Map Type
Map 和定制 Map 类型
Enum to Enum
枚举和枚举
Each of these can be mapped to one another: java.util.Date, java.sql.Date, java.sql.Time, java.sql.Timestamp, java.util.Calendar, java.util.GregorianCalendar
public class SourceBean {
private Long id;
private String name;
@Mapping("binaryData")
private String data;
@Mapping("pk")
public Long getId() {
return this.id;
}
//其余getter/setter方法略
}
TargetBean.java
public class TargetBean {
private String pk;
private String name;
private String binaryData;
//getter/setter方法略
}
public class TestCustomConverter implements CustomConverter {
public Object convert(Object destination, Object source,
Class destClass, Class sourceClass) {
if (source == null) {
return null;
}
CustomDoubleObject dest = null;
if (source instanceof Double) {
// check to see if the object already exists
if (destination == null) {
dest = new CustomDoubleObject();
} else {
dest = (CustomDoubleObject) destination;
}
dest.setTheDouble(((Double) source).doubleValue());
return dest;
} else if (source instanceof CustomDoubleObject) {
double sourceObj =
((CustomDoubleObject) source).getTheDouble();
return new Double(sourceObj);
} else {
throw new MappingException("Converter TestCustomConverter "
+ "used incorrectly. Arguments passed in were:"
+ destination + " and " + source);
}
}
(2) 在 xml 中引用定制的映射规则
引用定制的映射规则也是分级的，你可以酌情使用。
全局级
<?xml version="1.0" encoding="UTF-8"?>
<mappings xmlns="http://dozer.sourceforge.net"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://dozer.sourceforge.net
http://dozer.sourceforge.net/schema/beanmapping.xsd">
<configuration>
<!-- 总是双向转换的 -->
<custom-converters>
<converter type="org.dozer.converters.TestCustomConverter" >
<class-a>org.dozer.vo.CustomDoubleObject</class-a>
<class-b>java.lang.Double</class-b>
</converter>
<!-- You are responsible for mapping everything between
ClassA and ClassB -->
<converter
type="org.dozer.converters.TestCustomHashMapConverter" >
<class-a>org.dozer.vo.TestCustomConverterHashMapObject</class-a>
<class-b>org.dozer.vo.TestCustomConverterHashMapPrimeObject</class-b>
</converter>
</custom-converters>
</configuration>
</mappings>
