java - Orika - 不在 eclipse 中工作

Question

我在使用 eclipse 让 Orika 工作时遇到问题...我添加了 Maven orika 依赖项 (1.4.6) 并创建了一个示例 junit 测试

import java.util.List;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import ma.glasnost.orika.MapperFacade;
import ma.glasnost.orika.MapperFactory;
import ma.glasnost.orika.impl.DefaultMapperFactory;

public class OrikaTest {

    @Test
    public void test() {
        //System.setProperty(OrikaSystemProperties.COMPILER_STRATEGY,EclipseJdtCompilerStrategy.class.getName());

        MapperFactory mapperFactory = new DefaultMapperFactory.Builder()
                .build();

        mapperFactory
            .classMap(PersonDTO.class, PersonEntity.class)
            .field("cellPhone", "phone")
            .byDefault()
            .register();

        PersonDTO dto = new PersonDTO();
        dto.setFirstName("John");
        dto.setLastName("Smith");
        //dto.setRoles(Lists.newArrayList("Role1", "Role2"));
        dto.setCellPhone("845-111-2222");

        MapperFacade mapper = mapperFactory.getMapperFacade();

        PersonEntity entity = mapper.map(dto, PersonEntity.class);

        assertEquals(entity.getFirstName(), "Jeff");
        assertNotNull("Roles not filled", entity);

    }

}

class PersonDTO {
    private String firstName;
    private String lastName;
    private String cellPhone;
    private List<String> roles;

    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public List<String> getRoles() {
        return roles;
    }
    public void setRoles(List<String> roles) {
        this.roles = roles;
    }
    public String getCellPhone() {
        return cellPhone;
    }
    public void setCellPhone(String cellPhone) {
        this.cellPhone = cellPhone;
    }
}

class PersonEntity {
    private String firstName;
    private String lastName;
    private String phone;
    private List<String> roles;

    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    public List<String> getRoles() {
        return roles;
    }
    public void setRoles(List<String> roles) {
        this.roles = roles;
    }
}

当我运行单元测试时，出现以下异常:

ma.glasnost.orika.MappingException: ma.glasnost.orika.impl.generator.CompilerStrategy$SourceCodeGenerationException: class PersonDTO is not accessible at ma.glasnost.orika.impl.generator.MapperGenerator.build(MapperGenerator.java:105) at ma.glasnost.orika.impl.DefaultMapperFactory.buildMapper(DefaultMapperFactory.java:1372) at ma.glasnost.orika.impl.DefaultMapperFactory.build(DefaultMapperFactory.java:1199) at ma.glasnost.orika.impl.DefaultMapperFactory.getMapperFacade(DefaultMapperFactory.java:859) at OrikaTest.test(OrikaTest.java:37) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: ma.glasnost.orika.impl.generator.CompilerStrategy$SourceCodeGenerationException: class PersonDTO is not accessible at ma.glasnost.orika.impl.generator.JavassistCompilerStrategy.assureTypeIsAccessible(JavassistCompilerStrategy.java:155) at ma.glasnost.orika.impl.generator.MapperGenerator.build(MapperGenerator.java:58) ... 27 more

注意:我在控制台中看到 eclipse 打印了定义的映射。但是，执行时出现上述错误:

MapperFacade mapper = mapperFactory.getMapperFacade();

如果我尝试通过设置系统属性来使用 EclipseJdtCompilerStrategy，则会收到不同的异常:

java.lang.NoSuchMethodError: org.eclipse.jdt.internal.compiler.Compiler.(Lorg/eclipse/jdt/internal/compiler/env/INameEnvironment;Lorg/eclipse/jdt/internal/compiler/IErrorHandlingPolicy;Lorg/eclipse/jdt/internal/compiler/impl/CompilerOptions;Lorg/eclipse/jdt/internal/compiler/ICompilerRequestor;Lorg/eclipse/jdt/internal/compiler/IProblemFactory;)V at ma.glasnost.orika.impl.generator.EclipseJdtCompiler.(EclipseJdtCompiler.java:87) at ma.glasnost.orika.impl.generator.EclipseJdtCompiler.(EclipseJdtCompiler.java:77) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at java.lang.Class.newInstance(Class.java:379) at ma.glasnost.orika.impl.generator.EclipseJdtCompilerStrategy.(EclipseJdtCompilerStrategy.java:57) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at java.lang.Class.newInstance(Class.java:379) at ma.glasnost.orika.impl.UtilityResolver.resolveUtility(UtilityResolver.java:123) at ma.glasnost.orika.impl.UtilityResolver.getDefaultCompilerStrategy(UtilityResolver.java:51) at ma.glasnost.orika.impl.DefaultMapperFactory$MapperFactoryBuilder.(DefaultMapperFactory.java:310) at ma.glasnost.orika.impl.DefaultMapperFactory$Builder.(DefaultMapperFactory.java:587) at OrikaTest.test(OrikaTest.java:22) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

任何帮助将不胜感激

Answer 1

关于

class PersonDTO is not accessible at
    ma.glasnost.orika.impl.generator.JavassistCompilerStrategy.assureTypeIsAccessible(JavassistCompilerStrategy.java:155)

您的 PersonDTO 类是包可见的，因此 Orika 代码无法从其包中访问它。让它成为一个公共(public)类，这个问题就会消失。引用具体参见that line在 Orika 代码中。

当您使用默认(Javassist)编译器时会发生这种情况。

对于 Eclipse 编译器，请仔细检查您是否添加了相关的 Maven 依赖项

<dependency>
   <groupId>ma.glasnost.orika</groupId>
   <artifactId>orika-eclipse-tools</artifactId>
   <version>1.4.6</version><!-- should correspond to your core Orika version -->
</dependency> 

并在创建mapperFactory时启用编译器

MapperFactory factory = 
    new DefaultMapperFactory.Builder()
            .compilerStrategy(new EclipseJdtCompilerStrategy())
            .build();

系统属性应该用作后备，因此应该使用上面的构建器方法。

有关详细信息，请参阅Troubleshooting Guide “启用单步调试”部分。