refactor: 重构项目结构,迁移后端至 mengyastore-backend-go,新增 Java 后端、前端功能更新及部署文档
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45
mengyastore-backend-go/internal/config/config.go
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45
mengyastore-backend-go/internal/config/config.go
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package config
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import (
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"encoding/json"
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"fmt"
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"os"
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)
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type Config struct {
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AdminToken string `json:"adminToken"`
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AuthAPIURL string `json:"authApiUrl"`
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// 数据库 DSN,为空时回退到测试数据库。
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// 格式:user:pass@tcp(host:port)/dbname?charset=utf8mb4&parseTime=True&loc=Local
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DatabaseDSN string `json:"databaseDsn"`
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}
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// 各环境默认 DSN。
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const (
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TestDSN = "mengyastore-test:mengyastore-test@tcp(10.1.1.100:3306)/mengyastore-test?charset=utf8mb4&parseTime=True&loc=Local"
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ProdDSN = "mengyastore:mengyastore@tcp(192.168.1.100:3306)/mengyastore?charset=utf8mb4&parseTime=True&loc=Local"
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)
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func Load(path string) (*Config, error) {
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var cfg Config
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data, err := os.ReadFile(path)
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if err == nil {
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if jsonErr := json.Unmarshal(data, &cfg); jsonErr != nil {
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return nil, fmt.Errorf("解析配置文件 %s 失败: %w", path, jsonErr)
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}
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}
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// 文件不存在时使用默认值,环境变量在下方仍优先生效。
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if cfg.AdminToken == "" {
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cfg.AdminToken = "changeme"
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}
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// DATABASE_DSN 环境变量优先于配置文件。
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if dsn := os.Getenv("DATABASE_DSN"); dsn != "" {
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cfg.DatabaseDSN = dsn
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}
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if cfg.DatabaseDSN == "" {
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cfg.DatabaseDSN = TestDSN
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}
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return &cfg, nil
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}
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