反序列化enum时发生错误

[hr3lxphr6j]

• 环境

  • java version

    java version "1.8.0_181"
    Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
    Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
    

  • OS: macOS 10.13.6

  • fastjson version: 1.2.48

• Code

  package moe.chigusa;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.annotation.JSONField;
  import org.junit.Test;
  
  public class FastJsonTest {
      @Test
      public void test() {
          String jsonStr = "{\"code\": 1}";
          Mock m = JSON.parseObject(jsonStr, Mock.class);
          assert m != null;
          assert m.getCode().getCode() == 1;
      }
  }
  
  class Mock {
      @JSONField(name = "code")
      private EnumClass code;
  
      Mock() {}
  
      public EnumClass getCode() {
          return code;
      }
  
      public void setCode(EnumClass code) {
          this.code = code;
      }
  }
  
  enum EnumClass {
      A(1);
  
      private int code;
  
      EnumClass(int code) {
          this.code = code;
      }
  
      public int getCode() {
          return code;
      }
  
      public void setCode(int code) {
          this.code = code;
      }
  }

• Exception

  com.alibaba.fastjson.JSONException: 1
  
      at com.alibaba.fastjson.parser.deserializer.EnumDeserializer.deserialze(EnumDeserializer.java:156)
      at com.alibaba.fastjson.parser.deserializer.DefaultFieldDeserializer.parseField(DefaultFieldDeserializer.java:86)
      at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.parseField(JavaBeanDeserializer.java:1078)
      at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:773)
      at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:271)
      at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:267)
      at com.alibaba.fastjson.parser.DefaultJSONParser.parseObject(DefaultJSONParser.java:661)
      at com.alibaba.fastjson.JSON.parseObject(JSON.java:365)
      at com.alibaba.fastjson.JSON.parseObject(JSON.java:269)
      at com.alibaba.fastjson.JSON.parseObject(JSON.java:488)
      at moe.chigusa.FastJsonTest.test(FastJsonTest.java:11)
      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.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
      at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
      at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
      at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
      at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
      at com.intellij.rt.execution.junit.IdeaTestRunner$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: java.lang.ArrayIndexOutOfBoundsException: 1
      at com.alibaba.fastjson.parser.deserializer.EnumDeserializer.deserialze(EnumDeserializer.java:126)
      ... 32 more
  

• P.S 在数字为负数时会引发另一个错误

[txgj]

Mock类的序列化结果为 "{"code": "A"}", 所以用这个jsonStr反序列化

[hr3lxphr6j]

Mock类的序列化结果为 "{"code": "A"}", 所以用这个jsonStr反序列化

这个jsonStr是由其他应用提供的，希望能支持这种反序列化方式