虽然这不是回答如何解决此问题，但如 JDK-8161256 中所述常量池标记：

Though this doesn't answer on how to fix this but as stated in JDK-8161256 about the Constant pool tags:

Java 9使用代码 19 和 20 。

以及当前的方式 javassist 创建 ClassFile 是通过查找 ConstantPool （表格直到Java8）使用 readOne 方法肯定缺少类似模块的最新java版本。 javassist 的依赖关系层次结构：

and the way currently javassist creates ClassFile is by looking up in the ConstantPool (table until Java8) using the readOne method which certainly lacks something like a Module for the latest java version. Your dependency hierarchy for javassist:

• org.springframework.boot:spring-boot-starter-actuator：jar：2.0.0.M3：compile

• org.springframework.boot:spring-boot-starter-actuator:jar:2.0.0.M3:compile

• org .springframework.boot：spring-boot-starter-data-jpa：jar：2.0.0.M3：compile

• org.springframework.boot:spring-boot-starter-data-jpa:jar:2.0.0.M3:compile

• org .hibernate：hibernate-core：jar：5.2.10.Final：compile

• org.hibernate:hibernate-core:jar:5.2.10.Final:compile

• org.javassist：javassist：jar：3.21.0- GA：编译

查看 javassist 方面的事情：

• 似乎有类似的错误已注册在 javassist / issues＃147 。

rel_3_22_0_cr2 （上一版本）
读取与Java 9-ea + 164兼容。同样的问题发生在这个版本的javassist也是。

The rel_3_22_0_cr2 (last release) from them reads Compatible with Java 9-ea+164. Same issue occurs with this version of javassist as well.

所以你可以等待javassist用这个解决方案来回过头来。

So you can probably wait for javassist to come back over this with a solution.