com.alibaba.fastjson.JSONException: default constructor not found 异常表明Fastjson在尝试将JSON数据映射到某个Kotlin类时,未能找到该类的无参构造函数。在Kotlin中,如果类的主构造函数有参数,并且没有显式定义无参的次构造函数,那么编译器不会自动生成无参构造函数。 2. 可能的原因 Kotlin类没有无参构造函数:在Ko...
1、JavaBeanInfo中调用了TypeUtils.getKoltinConstructorParameters(clazz)方法获取参数名,其中有验证"kotlin.reflect.jvm.internal.KClassImpl",这个是kotlin-reflect库中的方法,而我并没有看到相关说明 2、JavaBeanInfo中调用了TypeUtils.getKoltinConstructor(constructors)方法获取构造方法,之后用来获取构造参数,其中有验证...
引入fastjson库, 实体类用Kotlin编写,调用JSON.parseObject()函数,报错 default constructor not found 比如实体类如下 代码语言:javascript 代码运行次数:0 dataclassUserBeans(varcode:Int=0,varmsg:String="",) 解决方式1 降低FastJson版本 代码语言:javascript 代码运行次数:0 运行 AI代码解释 implementation'com.ali...
com.alibaba.fastjson.JSONException: default constructor not found. class packagename.Configuration at com.alibaba.fastjson.parser.JavaBeanInfo.build(JavaBeanInfo.java:496) at com.alibaba.fastjson.parser.JavaBeanDeserializer.<init>(JavaBeanDeserializer.java:35) at com.alibaba.fastjson.parser.ParserConfig.get...
Also, you will found familiar tools: the great IntelliJ IDEA IDE and build tools likes Gradle or Maven. If you have never used Java that is still good news: you can take advantage of a production ready infrastructure. However, Kotlin is not just a better Java that also has special ...
x.length //error, x is not casted to a String outside if block if (x !is String) return x.length // x is automatically casted to String Kotlin 编译器知道变量*x*在执行检查后是String类型,因此它将自动将其转换为String类型,允许调用String类的所有方法和访问所有属性而无需进行任何显式转换。
Kotlin项目类找不到bug:java.lang.ClassNotFoundException: kotlin.reflect.Kotlin Reflect Internal Error 简介:一、今天在创建了一个Kotlin+Spring的项目,结果启动报错org.springframework.context. 一、今天在创建了一个Kotlin+Spring的项目,结果启动报错 org.springframework.context.ApplicationContextException: Unable ...
the kotlin package; default: legacy -Xbuild-file=<path> Path to the .xml build file to compile -Xcompile-java Reuse javac analysis and compile Java source files -Xnormalize-constructor-calls={disable|enable} Normalize constructor calls (disable: don't normalize; enable: normalize), default is...
junit.jupiter.testinstance.lifecycle.default = per_class 1. 通过此配置,我们现在可以使用常规方法并进行注释,如上面的更新版本所示。@BeforeAll@AfterAllIntegrationTests src/test/kotlin/com/example/blog/IntegrationTests.kt ...
报错: Connected to the target VM, address: '127.0.0.1:62501', transport: 'socket' {"a":1,"b":2} class com...test.DataClassSimple Exception in thread "main" com.alibaba.fastjson.JSONException: default constructor not found. class com...test.DataClassSimple Disconnected from the target ...