初始化项目

.gitignore

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+# Created by .ignore support plugin (hsz.mobi)
+### Go template
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+.idea
+.mvn
+.vscode
+.fleet
+release
+logs
+.scannerwork
+.env
+__debug*
+target
+gateway.iml
+gateway.ipr
+gateway.iws

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>cn.zhangdeman</groupId>
+    <artifactId>exception</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>

src/main/java/cn/zhangdeman/Exception.java

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+package cn.zhangdeman;
+
+// 自定义异常
+public class Exception {
+    private final Object code; // 错误码
+    private final String message; // 异常信息
+    private final Object data; // 异常数据
+
+    public Exception(Object code, Object data) {
+        this.code = code;
+        this.message = ""; // TODO : 根据code初始化Message
+        this.data = data;
+    }
+    public Exception(Object code, String message, Object data) {
+        this.code = code;
+        this.message = message;
+        this.data = data;
+    }
+}