[英]Dozer mapping inner classes
我需要使用推土機框架將 A 類映射到 C 類。
public class A {
private String fielda1;
private String fielda2;
public String getFielda1() {
return fielda1;
}
public void setFielda1(String fielda1) {
this.fielda1 = fielda1;
}
public String getFielda2() {
return fielda2;
}
public void setFielda2(String fielda2) {
this.fielda2 = fielda2;
}
}
public class B {
private List<C> cList;
public List<C> getcList() {
return cList;
}
public void setcList(List<C> cList) {
this.cList = cList;
}
public static class C {
private String fieldc1;
private String fieldc2;
public String getFieldc1() {
return fieldc1;
}
public void setFieldc1(String fieldc1) {
this.fieldc1 = fieldc1;
}
public String getFieldc2() {
return fieldc2;
}
public void setFieldc2(String fieldc2) {
this.fieldc2 = fieldc2;
}
}
}
XML映射文件:
<mapping wildcard="false" map-null="false" map-id="test">
<class-a>test.A</class-a>
<class-b>test.B.C</class-b>
<field>
<a>fielda1</a>
<b>fieldc1</b>
</field>
<field>
<a>fielda1</a>
<b>fieldc2</b>
</field>
</mapping>
當我嘗試映射這些類時,出現以下異常:
org.dozer.MappingException: java.lang.ClassNotFoundException: test.B.C
at org.dozer.util.MappingUtils.throwMappingException(MappingUtils.java:88)
at org.dozer.util.DefaultClassLoader.loadClass(DefaultClassLoader.java:33)
看來推土機無法處理這種情況,並使用 B 類作為包名。 可以使用自定義轉換器解決此問題。 我只是想知道是否有任何技巧可用於僅使用 XML 配置來轉換這些類?
嘗試在以下示例中使用test.B$C
:
<mapping wildcard="false" map-null="false" map-id="test">
<class-a>test.A</class-a>
<class-b>test.B$C</class-b>
<field>
<a>fielda1</a>
<b>fieldc1</b>
</field>
<field>
<a>fielda2</a>
<b>fieldc2</b>
</field>
</mapping>
另請注意,我將第二個字段從fielda1
為fielda2
,這在您的示例中似乎是一個錯字。
注意:因為您設置了map-id="test"
,所以在調用 map 時必須包含mapId
,例如:
B.C destObject = mapper.map(a, B.C.class, "test");
我測試過,這是正常工作的:
一個.java
package com.test;
public class A {
private String fielda1;
private String fielda2;
public String getFielda1() {
return fielda1;
}
public void setFielda1(String fielda1) {
this.fielda1 = fielda1;
}
public String getFielda2() {
return fielda2;
}
public void setFielda2(String fielda2) {
this.fielda2 = fielda2;
}
}
B.java
package com.test;
import java.util.List;
public class B {
private List<C> cList;
public List<C> getcList() {
return cList;
}
public void setcList(List<C> cList) {
this.cList = cList;
}
public static class C {
private String fieldc1;
private String fieldc2;
public String getFieldc1() {
return fieldc1;
}
public void setFieldc1(String fieldc1) {
this.fieldc1 = fieldc1;
}
public String getFieldc2() {
return fieldc2;
}
public void setFieldc2(String fieldc2) {
this.fieldc2 = fieldc2;
}
}
}
映射文件
<?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">
<mapping wildcard="false" map-null="false" map-id="test">
<class-a>com.test.A</class-a>
<class-b>com.test.B$C</class-b>
<field>
<a>fielda1</a>
<b>fieldc1</b>
</field>
<field>
<a>fielda1</a>
<b>fieldc2</b>
</field>
</mapping>
</mappings>
主程序
package com.test;
import java.util.ArrayList;
import java.util.List;
import org.dozer.DozerBeanMapper;
import org.dozer.Mapper;
public class Main5 {
public static void main(String[] args) throws Exception {
List<String> mappingFiles = new ArrayList<String>(1);
mappingFiles.add("mapping.xml");
Mapper mapper = new DozerBeanMapper(mappingFiles);
A a = new A();
a.setFielda1("fielda1Value");
a.setFielda2("fielda2Value");
B.C destObject = mapper.map(a, B.C.class, "test");
System.out.println(destObject.getFieldc1());
System.out.println(destObject.getFieldc2());
}
}
這在控制台中輸出:
...
fielda1Value
fielda1Value
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