spring boot dozer 转换do -> vo 一个奇怪的 ClassCast异常

zYiGJN 2018-09-17 02:42:53 
@RequestMapping(value = "/test", method = RequestMethod.GET)

	public TestMapping2 testDozer() {

		TestMapping mapping1 = new TestMapping();

		mapping1.setId("1");

		mapping1.setDesc("测试");

		mapping1.setUserName("admin");

		DozerBeanMapper beanMapper = new DozerBeanMapper();

		beanMapper.setMappingFiles(Arrays.asList("dozer/bean-mappings.xml"));

		Object obj = beanMapper.map(mapping1, TestMapping2.class);

		System.out.println(obj + "==========" + obj.getClass());

		TestMapping2 mapping2 = (TestMapping2) obj; // http调用报错（浏览器get请求） ，   junit 测试调用通过

		System.out.println("=====mapping2====" + mapping2);

		return null;

	}

	

	@Test

	public void testMapping() {

		testDozer();

	}


异常信息
2018-09-17 14:41:02.207  INFO 5372 --- [nio-9090-exec-2] org.dozer.DozerBeanMapper                : Using URL [file:/F:/workspace/yizhuwebsite/target/classes/dozer/bean-mappings.xml] to load custom xml mappings

2018-09-17 14:41:02.220  INFO 5372 --- [nio-9090-exec-2] org.dozer.DozerBeanMapper                : Successfully loaded custom xml mappings from URL: [file:/F:/workspace/yizhuwebsite/target/classes/dozer/bean-mappings.xml]

TestMapping2 [name=admin, id=1, desc=测试]==========class cn.clinic.saas.vo.TestMapping2

2018-09-17 14:41:02.234 ERROR 5372 --- [nio-9090-exec-2] o.a.c.c.C.[.[.[.[dispatcherServlet]      : Servlet.service() for servlet [dispatcherServlet] in context with path [/yizhuwebsite] threw exception [Request processing failed; nested exception is java.lang.ClassCastException: cn.clinic.saas.vo.TestMapping2 cannot be cast to cn.clinic.saas.vo.TestMapping2] with root cause



java.lang.ClassCastException: cn.clinic.saas.vo.TestMapping2 cannot be cast to cn.clinic.saas.vo.TestMapping2

	at cn.clinic.saas.controller.RegistController.testDozer(RegistController.java:94) ~[classes/:na]

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]

	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]

	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209) ~[spring-web-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:877) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:783) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851) ~[spring-webmvc-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.31.jar:8.5.31]

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at cn.clinic.saas.security.repository.MyFilterSecurityInterceptor.invoke(MyFilterSecurityInterceptor.java:48) ~[classes/:na]

	at cn.clinic.saas.security.repository.MyFilterSecurityInterceptor.doFilter(MyFilterSecurityInterceptor.java:41) ~[classes/:na]

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at cn.clinic.saas.security.repository.MyFilterSecurityInterceptor.invoke(MyFilterSecurityInterceptor.java:48) ~[classes/:na]

	at cn.clinic.saas.security.repository.MyFilterSecurityInterceptor.doFilter(MyFilterSecurityInterceptor.java:41) ~[classes/:na]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.7.RELEASE.jar:5.0.7.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) ~[spring-security-web-5.0.6.RELEASE.jar:5.0.6.RELEASE]

	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.7
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l610733154 2018-12-10
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是不是用了springboot的热部署插件spring-boot-devtools？关闭试试
zYiGJN 2018-09-17
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测试（junit）结果
14:43:52.751 [main] DEBUG org.dozer.fieldmap.FieldMap - Getting ready to invoke write method on the destination object. Dest Obj: TestMapping2, Dest value: admin

14:43:52.752 [main] DEBUG org.dozer.MappingProcessor - MAPPED: TestMapping.userName --> TestMapping2.name    VALUES: admin --> admin    MAPID: 

14:43:52.752 [main] DEBUG org.dozer.fieldmap.FieldMap - Getting ready to invoke write method on the destination object. Dest Obj: TestMapping2, Dest value: 1

14:43:52.752 [main] DEBUG org.dozer.MappingProcessor - MAPPED: TestMapping.id --> TestMapping2.id    VALUES: 1 --> 1    MAPID: 

14:43:52.752 [main] DEBUG org.dozer.fieldmap.FieldMap - Getting ready to invoke write method on the destination object. Dest Obj: TestMapping2, Dest value: 测试

14:43:52.752 [main] DEBUG org.dozer.MappingProcessor - MAPPED: TestMapping.desc --> TestMapping2.desc    VALUES: 测试 --> 测试    MAPID: 

TestMapping2 [name=admin, id=1, desc=测试]==========class cn.clinic.saas.vo.TestMapping2

=====mapping2====TestMapping2 [name=admin, id=1, desc=测试]
深度转换Bean<->Bean的Mapper
NULL 博文链接：https://vernonchen163.iteye.com/blog/1879387
dozer-5.5.1-API文档-中英对照版.zip
赠送jar包：dozer-5.5.1.jar； 赠送原API文档：dozer-5.5.1-javadoc.jar； 赠送源代码：dozer-5.5.1-sources.jar； 赠送Maven依赖信息文件：dozer-5.5.1.pom； 包含翻译后的API文档：dozer-5.5.1-javadoc-API文档-中文(简体)-英语-对照版.zip； Maven坐标：net.sf.dozer:dozer:5.5.1； 标签：sf、dozer、中英对照文档、jar包、java； 使用方法：解压翻译后的API文档，用浏览器打开“index.html”文件，即可纵览文档内容。 人性化翻译，文档中的代码和结构保持不变，注释和说明精准翻译，请放心使用。 双语对照，边学技术、边学英语。
dozer-5.5.1-API文档-中文版.zip
赠送jar包：dozer-5.5.1.jar； 赠送原API文档：dozer-5.5.1-javadoc.jar； 赠送源代码：dozer-5.5.1-sources.jar； 赠送Maven依赖信息文件：dozer-5.5.1.pom； 包含翻译后的API文档：dozer-5.5.1-javadoc-API文档-中文(简体)版.zip； Maven坐标：net.sf.dozer:dozer:5.5.1； 标签：sf、dozer、中文文档、jar包、java； 使用方法：解压翻译后的API文档，用浏览器打开“index.html”文件，即可纵览文档内容。 人性化翻译，文档中的代码和结构保持不变，注释和说明精准翻译，请放心使用。
dozer-user-guide
dozer是一种JavaBean的映射工具,类似于apache的BeanUtils
dozer小例子-bean复制
需要lib[dozer-5.0.jar, commons-lang.jar]，有需要的请猛击下载
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