```

feat(common): 添加IP私有地址和环回地址判断函数

在 qqwry.go 中新增 isPrivateIP 和 isLoopbackIP 函数，用于判断 IPv4/IPv6
是否为私有地址或环回地址，并在查询 IP 时优先返回局域网和私有地址标识。

fix(base): 修正系统日志查询字段

将 base_sys_log.go 中的查询字段从 "user".name 更正为 "user".username，
确保关联查询正确显示用户名。
```

common/utils/qqwry/qqwry.go

@@ -4,14 +4,16 @@ import (
 	"bytes"
 	"encoding/binary"
 	"errors"
-	"github.com/ipipdotnet/ipdb-go"
-	"golang.org/x/text/encoding/simplifiedchinese"
-	"golang.org/x/text/transform"
+	"fmt"
 	"io"
 	"net"
 	"os"
 	"strings"
 	"sync"
+
+	"github.com/ipipdotnet/ipdb-go"
+	"golang.org/x/text/encoding/simplifiedchinese"
+	"golang.org/x/text/transform"
 )
 
 var (
@@ -71,12 +73,59 @@ func QueryIP(ip string) (location *Location, err error) {
 	}
 }
 
+// 判断IP是否为私有地址（包括IPv4和IPv6）
+func isPrivateIP(ipStr string) (bool, error) {
+	ip := net.ParseIP(ipStr)
+	if ip == nil {
+		return false, fmt.Errorf("无效的IP地址: %s", ipStr)
+	}
+
+	// 定义私有网段
+	privateNets := []string{
+		// IPv4私有网段
+		"10.0.0.0/8",
+		"172.16.0.0/12",
+		"192.168.0.0/16",
+		// IPv6私有网段（ULA和链路本地）
+		"fc00::/7",
+		"fe80::/10",
+	}
+
+	// 检查IP是否属于任一私有网段
+	for _, cidr := range privateNets {
+		_, netIP, err := net.ParseCIDR(cidr)
+		if err != nil {
+			return false, err
+		}
+		if netIP.Contains(ip) {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+// 判断IP是否为环回地址
+func isLoopbackIP(ipStr string) (bool, error) {
+	ip := net.ParseIP(ipStr)
+	if ip == nil {
+		return false, fmt.Errorf("无效的IP地址: %s", ipStr)
+	}
+	return ip.IsLoopback(), nil
+}
+
 // QueryIPDat 从dat查询IP，仅加载dat格式数据库时使用
 func QueryIPDat(ipv4 string) (location *Location, err error) {
 	ip := net.ParseIP(ipv4).To4()
 	if ip == nil {
 		return nil, errors.New("ip is not ipv4")
 	}
+
+	if isLoopback, err := isLoopbackIP(ipv4); isLoopback || err != nil {
+		return &Location{ISP: "局域网", IP: ipv4}, nil
+	}
+	if isPrivateIP, err := isPrivateIP(ipv4); isPrivateIP || err != nil {
+		return &Location{ISP: "私有地址", IP: ipv4}, nil
+	}
 	ip32 := binary.BigEndian.Uint32(ip)
 	posA := binary.LittleEndian.Uint32(data[:4])
 	posZ := binary.LittleEndian.Uint32(data[4:8])

modules/base/service/base_sys_log.go

@@ -22,7 +22,7 @@ func NewBaseSysLogService() *BaseSysLogService {
 			Model: model.NewBaseSysLog(),
 			PageQueryOp: &cool.QueryOp{
 				KeyWordField: []string{"name", "params", "ipAddr"},
-				Select:       `base_sys_log.*,"user".name `,
+				Select:       `base_sys_log.*,"user".username `,
 				Join: []*cool.JoinOp{
 					{
 						Model:     model.NewBaseSysUser(),