Suremotoo opened a new issue, #10833: URL: https://github.com/apache/dubbo/issues/10833
- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate. ### Environment * Dubbo version: 2.7.18 * Operating System version: macOS * Java version: "1.8.0_342" ### Steps to reproduce this issue 1. 原本服务使用 Dubbo 2.7.3 ，Dubbo-admin 使用 0.1、0.3.0、0.5.0 的版本都没有问题 2. 升级至 Dubbo 2.7.18 后，Dubbo-admin 在进入方法测试的时候，均提示 `System Error, please try again later! Message:null` <img width="792" alt="CleanShot 2022-10-26 at 14 54 44@2x" src="https://user-images.githubusercontent.com/26423989/197955645-30e62e70-7553-4b3d-ad11-05ac4d59ac2c.png";> 我使用官方提供的 demo 更换版本后并重现了此问题 https://github.com/apache/dubbo-samples/tree/master/dubbo-samples-spring-boot 调整上述工程的 Dubbo 版本至 2.7.18 ，使用任意版本的 Dubbo-admin 均可复现问题。 > 使用低版本 2.7.3 及 高版本 3.0.7 却能正常解析，我怀疑是 Dubbo 2.7.18 或者在某个之前版本进行过这部分调整，所以在 apache/Duddo 项目中提出此问题 我通过 Dubbo-admin 断点调试，发现获取到的`元数据 ProviderMetaData` 变成了对象引用形式(`$ref`) 导致无法正确解析接口参数信息，下面提供本次异常情况（Expected Behavior）、正常情况（Actual Behavior）的部分示例信息： ### Expected Behavior ```json { "parameters": { "side": "provider", "interface": "org.apache.dubbo.springboot.demo.DemoService", "pid": "89629", "application": "dubbo-springboot-demo-provider", "dubbo": "2.0.2", "release": "3.0.7", "anyhost": "true", "bind.ip": "10.193.99.224", "methods": "sayHello,sayHelloAsync", "background": "false", "deprecated": "false", "dynamic": "true", "service-name-mapping": "true", "qos.enable": "false", "generic": "false", "bind.port": "20881", "timestamp": "1666762729287" }, "canonicalName": "org.apache.dubbo.springboot.demo.DemoService", "codeSource": "file:/Users/suremotoo/IdeaProjects/demo/dubbo-samples/dubbo-samples-spring-boot/dubbo-samples-spring-boot-interface/target/classes/", "methods": [ { "name": "sayHelloAsync", "parameterTypes": [ "java.lang.String" ], "returnType": "java.util.concurrent.CompletableFuture", "annotations": [] }, { "name": "sayHello", "parameterTypes": [ "java.lang.String" ], "returnType": "java.lang.String", "annotations": [] } ], "types": [ { "type": "java.util.concurrent.CompletableFuture", "properties": { "result": "java.lang.Object", "stack": "java.util.concurrent.CompletableFuture.Completion" } }, { "type": "java.lang.Object" }, { "type": "java.lang.String" }, { "type": "java.util.concurrent.CompletableFuture.Completion", "properties": { "next": "java.util.concurrent.CompletableFuture.Completion", "status": "int" } }, { "type": "int" } ], "annotations": [] } ``` ### Actual Behavior ```json { "annotations": [], "canonicalName": "org.apache.dubbo.springboot.demo.DemoService", "codeSource": "file:/Users/suremotoo/IdeaProjects/demo/dubbo-samples/dubbo-samples-spring-boot/dubbo-samples-spring-boot-interface/target/classes/", "methods": [ { "annotations": [], "name": "sayHelloAsync", "parameterTypes": [ "java.lang.String" ], "parameters": [], "returnType": "java.util.concurrent.CompletableFuture" }, { "annotations": [], "name": "sayHello", "parameterTypes": [ "java.lang.String" ], "parameters": [], "returnType": "java.lang.String" } ], "parameters": { "side": "provider", "service.name": "ServiceBean:/org.apache.dubbo.springboot.demo.DemoService", "release": "2.7.18", "methods": "sayHello,sayHelloAsync", "deprecated": "false", "dubbo": "2.0.2", "interface": "org.apache.dubbo.springboot.demo.DemoService", "qos.enable": "false", "generic": "false", "metadata-type": "remote", "application": "dubbo-springboot-demo-provider", "dynamic": "true", "anyhost": "true" }, "types": [ { "enums": [], "items": [], "properties": {}, "type": "int", "typeBuilderName": "org.apache.dubbo.metadata.definition.builder.DefaultTypeBuilder" }, { "enums": [], "items": [], "properties": {}, "type": "java.lang.Object", "typeBuilderName": "org.apache.dubbo.metadata.definition.builder.DefaultTypeBuilder" }, { "enums": [], "items": [], "properties": {}, "type": "java.lang.String", "typeBuilderName": "org.apache.dubbo.metadata.definition.builder.DefaultTypeBuilder" }, { "enums": [], "items": [], "properties": { "result": { "$ref": "$.types[1]" }, "stack": { "enums": [], "items": [], "properties": { "next": { "$ref": "java.util.concurrent.CompletableFuture$Completion", "enums": [], "items": [], "properties": {}, "type": "java.util.concurrent.CompletableFuture$Completion", "typeBuilderName": "org.apache.dubbo.metadata.definition.builder.DefaultTypeBuilder" }, "status": { "$ref": "$.types[0]" } }, "type": "java.util.concurrent.CompletableFuture$Completion", "typeBuilderName": "org.apache.dubbo.metadata.definition.builder.DefaultTypeBuilder" } }, "type": "java.util.concurrent.CompletableFuture", "typeBuilderName": "org.apache.dubbo.metadata.definition.builder.DefaultTypeBuilder" }, { "$ref": "$.types[3].properties.stack" } ], "uniqueId": "org.apache.dubbo.springboot.demo.DemoService@file:/Users/suremotoo/IdeaProjects/demo/dubbo-samples/dubbo-samples-spring-boot/dubbo-samples-spring-boot-interface/target/classes/" } ``` -- This is an automated message from the Apache Git Service. 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