org.modelmapper.MappingException: ModelMapper mapping errors: 1) Converter org.modelmapper.internal.converter.NumberConverter@1c93b51e failed to convert java.lang.String to java.lang.Long. 1 error at org.modelmapper.internal.Errors.throwMappingExceptionIfErrorsExist(Errors.java:374) at org.modelmapper.internal.MappingEngineImpl.map(MappingEngineImpl.java:69) at org.modelmapper.ModelMapper.mapInternal(ModelMapper.java:497) at org.modelmapper.ModelMapper.map(ModelMapper.java:340) at com.springboot.RedisTest.testMapToPojo(RedisTest.java:61) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:675) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:125) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:132) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:124) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:74) at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:104) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:62) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:43) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:35) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:202) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:198) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) at java.util.ArrayList.forEach(ArrayList.java:1257) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) at java.util.ArrayList.forEach(ArrayList.java:1257) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229) at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197) at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) Caused by: org.modelmapper.MappingException: ModelMapper mapping errors: 1) Error mapping c350300_1 to java.lang.Long 1 error at org.modelmapper.internal.Errors.toMappingException(Errors.java:258) at org.modelmapper.internal.converter.NumberConverter.numberFor(NumberConverter.java:176) at org.modelmapper.internal.converter.NumberConverter.convert(NumberConverter.java:71) at org.modelmapper.internal.converter.NumberConverter.convert(NumberConverter.java:55) at org.modelmapper.internal.MappingEngineImpl.convert(MappingEngineImpl.java:337) at org.modelmapper.internal.MappingEngineImpl.map(MappingEngineImpl.java:96) at org.modelmapper.internal.MappingEngineImpl.setDestinationValue(MappingEngineImpl.java:247) at org.modelmapper.internal.MappingEngineImpl.propertyMap(MappingEngineImpl.java:181) at org.modelmapper.internal.MappingEngineImpl.typeMap(MappingEngineImpl.java:132) at org.modelmapper.internal.MappingEngineImpl.map(MappingEngineImpl.java:101) at org.modelmapper.internal.MappingEngineImpl.map(MappingEngineImpl.java:60) ... 66 more Caused by: java.lang.NumberFormatException: For input string: "c350300_1" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Long.parseLong(Long.java:589) at java.lang.Long.valueOf(Long.java:803) at org.modelmapper.internal.converter.NumberConverter.numberFor(NumberConverter.java:166) ... 75 more
以上异常很容易看懂，从c350300_1 to java.lang.Long转Long失败，
相关java类如下
import com.fasterxml.jackson.annotation.JsonIgnore; import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.annotation.JsonProperty; import com.google.common.base.Objects; import lombok.AllArgsConstructor; import lombok.Builder; import lombok.Data; import lombok.NoArgsConstructor; @Data @NoArgsConstructor @AllArgsConstructor @Builder public class SnapShot { @JsonIgnore private Long id; @JsonIgnore private Integer distId; @JsonProperty("name") @JsonInclude(JsonInclude.Include.NON_EMPTY) private String distName; private Integer confirm; @JsonIgnore @JsonInclude(JsonInclude.Include.NON_NULL) private Integer suspect; private Integer dead; private Integer heal; private Float weight; @JsonInclude(JsonInclude.Include.NON_EMPTY) private Integer parentId; @JsonIgnore private String level; @JsonInclude(JsonInclude.Include.NON_EMPTY) private String mapId; private String updateTime; @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; SnapShot snapShot = (SnapShot) o; return Objects.equal(distId, snapShot.distId) && Objects.equal(confirm, snapShot.confirm) && Objects.equal(suspect, snapShot.suspect) && Objects.equal(dead, snapShot.dead) && Objects.equal(heal, snapShot.heal)&& Objects.equal(weight,snapShot.weight)&& Objects.equal(level, snapShot.level)&& Objects.equal(mapId,snapShot.mapId); } @Override public int hashCode() { return 0; } }
实体里的mapId属性是String类型的，根据笔者猜测ModelMapper可能根据属性后缀进行联想，企图把它转化整数类型（long），本地maven问题，没下载到源码，没法深入追踪代码。
最终在网上找到解决办法
https://github.com/modelmapper/modelmapper/issues/312
ModelMapper modelMapper = new ModelMapper(); modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
map
转换成功后：
ModelMapper从Map转实体，数据类型转换出错failed to convert java.lang.String to java.lang.Long