feat 添加默认初始化方法

client.go

@@ -1,11 +1,30 @@
 package dw_sdk
 
+import (
+	"fmt"
+	"os"
+)
+
 type Client struct {
 	articleServiceClient ArticleServiceClient
 	consignBidClient     BidClient
 	preSaleBidClient     BidClient
 }
 
+func InitDefaultDWClient() (*Client, error) {
+	path := os.Getenv(ConfigPathEnvKey)
+	if path == "" {
+		path = DefaultConfigPath
+	}
+	cfg, err := LoadDWConfig(path)
+	if err != nil {
+		return nil, fmt.Errorf("获取得物配置失败：%v", err)
+	}
+	cli := NewClient(*cfg)
+
+	return cli, nil
+}
+
 func NewClient(cfg Config) *Client {
 	return &Client{
 		articleServiceClient: NewArticleServiceClient(cfg),

config.go

@@ -1,5 +1,11 @@
 package dw_sdk
 
+import (
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
 type Config struct {
 	Public PublicConfig `json:"public" yaml:"public"`
 	Proxy  *ProxyConfig `json:"proxy,omitempty"  yaml:"proxy,omitempty"`
@@ -17,3 +23,20 @@ type ProxyConfig struct {
 	User string `json:"user" yaml:"user"`
 	Pass string `json:"pass" yaml:"pass"`
 }
+
+const (
+	// 默认的数据库配置文件路径
+	DefaultConfigPath = "/cfg/dw.yaml"
+	// 数据库配置文件路径环境变量
+	ConfigPathEnvKey = "DW_CONFIG_PATH"
+)
+
+func LoadDWConfig(path string) (*Config, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+	var opt Config
+	return &opt, yaml.NewDecoder(f).Decode(&opt)
+}