Orika:java.lang.ClassCastException:java.lang.Object无法转换为mapper.Name
在映射数组和列表的元素部分,我正在编写示例orika mapper文档 下面是我创建mapperFacade并将Orika:java.lang.ClassCastException:java.lang.Object无法转换为mapper.Name,java,orika,Java,Orika,在映射数组和列表的元素部分,我正在编写示例orika mapper文档 下面是我创建mapperFacade并将Person对象转换为PersonDto- 名称类定义- public class Name { private String first; private String last; private String fullName; // getters/setters public Name()
Person
对象转换为PersonDto
-
名称类定义-
public class Name {
private String first;
private String last;
private String fullName;
// getters/setters
public Name() {
}
public Name(String first, String last, String fullName) {
this.first = first;
this.last = last;
this.fullName = fullName;
}
public String getFirst() {
return first;
}
public void setFirst(String first) {
this.first = first;
}
public String getLast() {
return last;
}
public void setLast(String last) {
this.last = last;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
}
import java.util.List;
public class Person {
private List<Name> names;
// getters/setters
public Person() {
}
public List<Name> getNames() {
return names;
}
public void setNames(List<Name> names) {
this.names = names;
}
}
个人类别定义-
public class Name {
private String first;
private String last;
private String fullName;
// getters/setters
public Name() {
}
public Name(String first, String last, String fullName) {
this.first = first;
this.last = last;
this.fullName = fullName;
}
public String getFirst() {
return first;
}
public void setFirst(String first) {
this.first = first;
}
public String getLast() {
return last;
}
public void setLast(String last) {
this.last = last;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
}
import java.util.List;
public class Person {
private List<Name> names;
// getters/setters
public Person() {
}
public List<Name> getNames() {
return names;
}
public void setNames(List<Name> names) {
this.names = names;
}
}
import java.util.List;
公共阶层人士{
私人名单名称;
//能手/二传手
公众人士(){
}
公共列表getNames(){
返回姓名;
}
公共无效集合名(列表名){
this.names=名称;
}
}
PersonDto类定义-
import java.util.List;
import java.util.Map;
public class PersonDto {
private Map<String, Name> personalNames;
private String[] firstNames;
private List<String> lastNames;
// getters/setters omitted
public PersonDto() {
}
public Map<String, Name> getPersonalNames() {
return personalNames;
}
public void setPersonalNames(Map<String, Name> personalNames) {
this.personalNames = personalNames;
}
public String[] getFirstNames() {
return firstNames;
}
public void setFirstNames(String[] firstNames) {
this.firstNames = firstNames;
}
public List<String> getLastNames() {
return lastNames;
}
public void setLastNames(List<String> lastNames) {
this.lastNames = lastNames;
}
}
Map<String,String> fieldMap = new HashMap<>();
fieldMap.put("names{fullName}", "personalNames{key}");
fieldMap.put("names{}", "personalNames{value}");
MapperFactory mapperFactory = new DefaultMapperFactory.Builder().mapNulls(false).dumpStateOnException(false).build();
ClassMapBuilder<Person, PersonDto> classBuilder = mapperFactory.classMap(Person.class, PersonDto.class);
fieldMap.forEach((k,v) -> classBuilder.field(k,v));
classBuilder.register();
BoundMapperFacade<Person, PersonDto> delegate = mapperFactory.getMapperFacade(Person.class, PersonDto.class);
Person person = new Person();
Name n1 = new Name("raj", "kumar", "raj kumar");
Name n2 = new Name("senthil", "kumar", "senthil kumar");
person.setNames(Arrays.asList(n1, n2));
PersonDto pDto = mapper.map(person);
System.out.println(pDto);
import java.util.List;
导入java.util.Map;
公共类个人{
私人地图姓名;
私有字符串[]名;
私人名单;
//省略了getter/setter
公众人物{
}
公共映射getPersonalNames(){
返回个人姓名;
}
public void setPersonalNames(映射personalNames){
this.personalNames=personalNames;
}
公共字符串[]getFirstNames(){
返回名字;
}
public void setFirstNames(字符串[]firstNames){
this.firstNames=名字;
}
公共列表getLastNames(){
返回姓氏;
}
public void setLastNames(列出lastNames){
this.lastNames=lastNames;
}
}
Map fieldMap=新的HashMap();
fieldMap.put(“名称{fullName}”,“个人名称{key}”);
fieldMap.put(“名称{}”,“个人名称{value}”);
MapperFactory MapperFactory=new DefaultMapperFactory.Builder().mapNulls(false).dumpStateOnException(false).build();
ClassMapBuilder classBuilder=mapperFactory.classMap(Person.class,PersonDto.class);
forEach((k,v)->classBuilder.field(k,v));
register();
BoundMapperFacade委托=mapperFactory.getMapperFacade(Person.class,PersonDto.class);
Person=新人();
名称n1=新名称(“raj”、“kumar”、“raj kumar”);
名称n2=新名称(“senthil”、“kumar”、“senthil kumar”);
person.setNames(数组.asList(n1,n2));
PersonDto pDto=mapper.map(个人);
系统输出打印项次(pDto);
当我运行此代码时,我得到以下错误-
无法将java.lang.Object转换为mapper.Name
java.lang.ClassCastException:java.lang.Object不能转换为mapper.Name
在ma.glasnost.orika.generated.orika_PersonDto_Person_mapper 12572858142441$0.mapAtoB(orika_PersonDto_Person_mapper 12572858142441$0.java)
在ma.glasnost.orika.impl.mapping.strategy.UseCustomMapperStrategy.map(UseCustomMapperStrategy.java:77)
位于ma.glasnost.orika.impl.DefaultBoundMapperFacade.map(DefaultBoundMapperFacade.java:137)
位于ma.glasnost.orika.impl.DefaultBoundMapperFacade.map(DefaultBoundMapperFacade.java:94)
位于mapper.PersonToPersonDtoMapper.map(PersonToPersonDtoMapper.java:29)
位于mapper.PersonToPersonDtoMapper.map(PersonToPersonDtoMapper.java:14)
位于mapper.PersonToPersonDtoMapperTest.test1(PersonToPersonDtoMapperTest.java:29)
在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)处
位于sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)中
位于java.lang.reflect.Method.invoke(Method.java:498)
位于org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
位于org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:584)
位于org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:172)
位于org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
位于org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:804)
位于org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:145)
位于org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
位于org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
forEach(ArrayList.java:1249)
位于org.testng.TestRunner.privateRun(TestRunner.java:770)
位于org.testng.TestRunner.run(TestRunner.java:591)
位于org.testng.SuiteRunner.runTest(SuiteRunner.java:402)
在org.testng.SuiteRunner.runSequential上(SuiteRunner.java:396)
位于org.testng.SuiteRunner.privateRun(SuiteRunner.java:355)
运行(SuiteRunner.java:304)
我在github上托管了这段代码
我的代码有什么问题?如何解决此问题 之所以出现这个问题,是因为Java泛型在运行时被剥离掉了
Map.Entry
(编译时)变为Map.Entry
(运行时)
您可以通过如下调整ClassMapBuilder来解决此问题:
Map fieldMap=newhashmap();
fieldMap.put(“名称{fullName}”,“个人名称{key}”);
fieldMap.put(“名称{}”,“个人名称{value}”);
MapperFactory MapperFactory=new DefaultMapperFactory.Builder().mapNulls(false).dumpStateOnException(false).build();
//将Person、persond替换为泛型参数。
ClassMapBuilder classBuilder=mapperFactory.classMap(PersonDto.class,Person.class);
forEach((k,v)->classBuilder.field(v,k));
register();
//代码的其余部分是相同的
发生此问题的原因是Java泛型在运行时被剥离Map.Entry
(编译时)变为Map.Entry
(运行时)
您可以通过如下调整ClassMapBuilder来解决此问题:
Map fieldMap=newhashmap();
fieldMap.put(“名称{fullName}”,“个人名称{key}”);
fieldMap.put(“名称{}”,“个人名称{value}”);
MapperFactory MapperFactory=new DefaultMapperFactory.Builder().mapNulls(false).dumpStateOnException(false).build();
//将Person、persond替换为泛型参数。
ClassMapBuilder classBuilder=mapperFactory.classMap(PersonDto.class,Person.class);
forEach((k,v)->classBuilder.field(v,k));
register();
//剩下的鳕鱼