refactor: 将数据库配置内置到脚本中，简化使用流程

改进内容:
1. export_database.sh
   - 将数据库配置直接内置在脚本顶部
   - 移除外部配置文件依赖
   - 配置项: DB_HOST, DB_PORT, DB_USER, DB_PASS, DB_NAME

2. import_database.sh
   - 将三个环境的配置内置在脚本顶部
   - 配置项: DEV_DB_*, TEST_DB_*, PROD_DB_*
   - 无需额外配置文件

3. 更新操作指南
   - 反映配置内置的变化
   - 更新配置步骤说明
   - 更新文件结构说明

优点:
- 使用更简单，无需创建配置文件
- 配置集中在一处，易于管理
- 减少文件依赖

使用方法:
1. 编辑 export_database.sh 顶部配置数据库信息
2. 编辑 import_database.sh 顶部配置目标环境数据库信息
3. ./export_database.sh  # 导出数据库
4. ./import_database.sh <dev|test|prod>  # 导入到目标环境

import_database.sh

@@ -5,6 +5,40 @@
 
 set -e  # 遇到错误立即退出
 
+# =====================================================
+# 数据库配置（请根据实际情况修改）
+# =====================================================
+
+# 开发环境数据库配置
+DEV_DB_HOST="116.62.17.81"
+DEV_DB_PORT="3306"
+DEV_DB_USER="root"
+DEV_DB_PASS="Kfcx@1234"
+DEV_DB_NAME="ccdi"
+
+# 测试环境数据库配置
+TEST_DB_HOST="your_test_host"
+TEST_DB_PORT="3306"
+TEST_DB_USER="your_test_user"
+TEST_DB_PASS="your_test_password"
+TEST_DB_NAME="ccdi"
+
+# 生产环境数据库配置
+PROD_DB_HOST="your_production_host"
+PROD_DB_PORT="3306"
+PROD_DB_USER="your_production_user"
+PROD_DB_PASS="your_production_password"
+PROD_DB_NAME="ccdi"
+
+# 备份文件配置
+BACKUP_DIR="doc/database/backup"
+STRUCTURE_FILE="ccdi_structure.sql"
+DATA_FILE="ccdi_data.sql"
+
+# =====================================================
+# 脚本逻辑（无需修改）
+# =====================================================
+
 # 颜色定义
 RED='\033[0;31m'
 GREEN='\033[0;32m'
@@ -26,24 +60,6 @@ log_error() {
 
 # 脚本目录
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-CONFIG_FILE="${SCRIPT_DIR}/db_config.conf"
-BACKUP_DIR="${SCRIPT_DIR}/doc/database/backup"
-STRUCTURE_FILE="ccdi_structure.sql"
-DATA_FILE="ccdi_data.sql"
-
-# 检查配置文件
-check_config() {
-    if [ ! -f "$CONFIG_FILE" ]; then
-        log_error "配置文件不存在: $CONFIG_FILE"
-        log_info "请先复制配置模板: cp db_config.conf.template db_config.conf"
-        log_info "然后编辑 db_config.conf 填写目标数据库连接信息"
-        exit 1
-    fi
-
-    # 加载配置文件
-    source "$CONFIG_FILE"
-    log_info "配置文件加载成功"
-}
 
 # 检查 mysql 命令
 check_mysql() {
@@ -64,13 +80,13 @@ check_backup_files() {
 
     if [ ! -f "$structure_file" ]; then
         log_error "表结构文件不存在: $structure_file"
-        log_info "请先执行导出: ./export_database.sh export"
+        log_info "请先执行导出: ./export_database.sh"
         exit 1
     fi
 
     if [ ! -f "$data_file" ]; then
         log_error "数据文件不存在: $data_file"
-        log_info "请先执行导出: ./export_database.sh export"
+        log_info "请先执行导出: ./export_database.sh"
         exit 1
     fi
 
@@ -79,50 +95,56 @@ check_backup_files() {
     log_info "数据文件: $data_file ($(du -h "$data_file" | cut -f1))"
 }
 
-# 导入表结构
-import_structure() {
+# 获取环境数据库配置
+get_db_config() {
     local env_type=$1
-    local db_host db_port db_user db_pass db_name
 
     case "$env_type" in
-        production|prod)
-            db_host="$PROD_DB_HOST"
-            db_port="$PROD_DB_PORT"
-            db_user="$PROD_DB_USER"
-            db_pass="$PROD_DB_PASS"
-            db_name="$PROD_DB_NAME"
+        dev|development)
+            DB_HOST="$DEV_DB_HOST"
+            DB_PORT="$DEV_DB_PORT"
+            DB_USER="$DEV_DB_USER"
+            DB_PASS="$DEV_DB_PASS"
+            DB_NAME="$DEV_DB_NAME"
             ;;
         test)
-            db_host="$TEST_DB_HOST"
-            db_port="$TEST_DB_PORT"
-            db_user="$TEST_DB_USER"
-            db_pass="$TEST_DB_PASS"
-            db_name="$TEST_DB_NAME"
+            DB_HOST="$TEST_DB_HOST"
+            DB_PORT="$TEST_DB_PORT"
+            DB_USER="$TEST_DB_USER"
+            DB_PASS="$TEST_DB_PASS"
+            DB_NAME="$TEST_DB_NAME"
             ;;
-        dev|development)
-            db_host="$SOURCE_DB_HOST"
-            db_port="$SOURCE_DB_PORT"
-            db_user="$SOURCE_DB_USER"
-            db_pass="$SOURCE_DB_PASS"
-            db_name="$SOURCE_DB_NAME"
+        production|prod)
+            DB_HOST="$PROD_DB_HOST"
+            DB_PORT="$PROD_DB_PORT"
+            DB_USER="$PROD_DB_USER"
+            DB_PASS="$PROD_DB_PASS"
+            DB_NAME="$PROD_DB_NAME"
             ;;
         *)
             log_error "未知的环境类型: $env_type"
             exit 1
             ;;
     esac
+}
 
-    log_info "导入表结构到 ${env_type} 环境: ${db_host}:${db_port}/${db_name}"
+# 导入表结构
+import_structure() {
+    local env_type=$1
+
+    get_db_config "$env_type"
+
+    log_info "导入表结构到 ${env_type} 环境: ${DB_HOST}:${DB_PORT}/${DB_NAME}"
 
     local structure_file="${BACKUP_DIR}/${STRUCTURE_FILE}"
 
     # 导入表结构
-    mysql -h "$db_host" \
-        -P "$db_port" \
-        -u "$db_user" \
-        -p"$db_pass" \
+    mysql -h "$DB_HOST" \
+        -P "$DB_PORT" \
+        -u "$DB_USER" \
+        -p"$DB_PASS" \
         --default-character-set=utf8mb4 \
-        "$db_name" < "$structure_file" 2>/dev/null
+        "$DB_NAME" < "$structure_file" 2>/dev/null
 
     if [ $? -eq 0 ]; then
         log_info "表结构导入成功"
@@ -135,47 +157,20 @@ import_structure() {
 # 导入数据
 import_data() {
     local env_type=$1
-    local db_host db_port db_user db_pass db_name
 
-    case "$env_type" in
-        production|prod)
-            db_host="$PROD_DB_HOST"
-            db_port="$PROD_DB_PORT"
-            db_user="$PROD_DB_USER"
-            db_pass="$PROD_DB_PASS"
-            db_name="$PROD_DB_NAME"
-            ;;
-        test)
-            db_host="$TEST_DB_HOST"
-            db_port="$TEST_DB_PORT"
-            db_user="$TEST_DB_USER"
-            db_pass="$TEST_DB_PASS"
-            db_name="$TEST_DB_NAME"
-            ;;
-        dev|development)
-            db_host="$SOURCE_DB_HOST"
-            db_port="$SOURCE_DB_PORT"
-            db_user="$SOURCE_DB_USER"
-            db_pass="$SOURCE_DB_PASS"
-            db_name="$SOURCE_DB_NAME"
-            ;;
-        *)
-            log_error "未知的环境类型: $env_type"
-            exit 1
-            ;;
-    esac
+    get_db_config "$env_type"
 
-    log_info "导入数据到 ${env_type} 环境: ${db_host}:${db_port}/${db_name}"
+    log_info "导入数据到 ${env_type} 环境: ${DB_HOST}:${DB_PORT}/${DB_NAME}"
 
     local data_file="${BACKUP_DIR}/${DATA_FILE}"
 
     # 导入数据
-    mysql -h "$db_host" \
-        -P "$db_port" \
-        -u "$db_user" \
-        -p"$db_pass" \
+    mysql -h "$DB_HOST" \
+        -P "$DB_PORT" \
+        -u "$DB_USER" \
+        -p"$DB_PASS" \
         --default-character-set=utf8mb4 \
-        "$db_name" < "$data_file" 2>/dev/null
+        "$DB_NAME" < "$data_file" 2>/dev/null
 
     if [ $? -eq 0 ]; then
         log_info "数据导入成功"
@@ -188,65 +183,38 @@ import_data() {
 # 验证导入结果
 verify_import() {
     local env_type=$1
-    local db_host db_port db_user db_pass db_name
 
-    case "$env_type" in
-        production|prod)
-            db_host="$PROD_DB_HOST"
-            db_port="$PROD_DB_PORT"
-            db_user="$PROD_DB_USER"
-            db_pass="$PROD_DB_PASS"
-            db_name="$PROD_DB_NAME"
-            ;;
-        test)
-            db_host="$TEST_DB_HOST"
-            db_port="$TEST_DB_PORT"
-            db_user="$TEST_DB_USER"
-            db_pass="$TEST_DB_PASS"
-            db_name="$TEST_DB_NAME"
-            ;;
-        dev|development)
-            db_host="$SOURCE_DB_HOST"
-            db_port="$SOURCE_DB_PORT"
-            db_user="$SOURCE_DB_USER"
-            db_pass="$SOURCE_DB_PASS"
-            db_name="$SOURCE_DB_NAME"
-            ;;
-        *)
-            log_error "未知的环境类型: $env_type"
-            exit 1
-            ;;
-    esac
+    get_db_config "$env_type"
 
     log_info "验证导入结果..."
 
     # 查询表数量
-    local table_count=$(mysql -h "$db_host" \
-        -P "$db_port" \
-        -u "$db_user" \
-        -p"$db_pass" \
+    local table_count=$(mysql -h "$DB_HOST" \
+        -P "$DB_PORT" \
+        -u "$DB_USER" \
+        -p"$DB_PASS" \
         --default-character-set=utf8mb4 \
-        -N -e "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema='$db_name';" "$db_name" 2>/dev/null)
+        -N -e "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema='$DB_NAME';" "$DB_NAME" 2>/dev/null)
 
     log_info "目标数据库表数量: $table_count"
 
     # 查询关键表行数（示例：sys_user 表）
-    local user_count=$(mysql -h "$db_host" \
-        -P "$db_port" \
-        -u "$db_user" \
-        -p"$db_pass" \
+    local user_count=$(mysql -h "$DB_HOST" \
+        -P "$DB_PORT" \
+        -u "$DB_USER" \
+        -p"$DB_PASS" \
         --default-character-set=utf8mb4 \
-        -N -e "SELECT COUNT(*) FROM sys_user;" "$db_name" 2>/dev/null)
+        -N -e "SELECT COUNT(*) FROM sys_user;" "$DB_NAME" 2>/dev/null)
 
     log_info "sys_user 表数据行数: $user_count"
 
     # 检查数据库字符集
-    local db_charset=$(mysql -h "$db_host" \
-        -P "$db_port" \
-        -u "$db_user" \
-        -p"$db_pass" \
+    local db_charset=$(mysql -h "$DB_HOST" \
+        -P "$DB_PORT" \
+        -u "$DB_USER" \
+        -p"$DB_PASS" \
         --default-character-set=utf8mb4 \
-        -N -e "SELECT DEFAULT_CHARACTER_SET_NAME FROM information_schema.schemata WHERE schema_name='$db_name';" 2>/dev/null)
+        -N -e "SELECT DEFAULT_CHARACTER_SET_NAME FROM information_schema.schemata WHERE schema_name='$DB_NAME';" 2>/dev/null)
 
     log_info "数据库字符集: $db_charset"
 }
@@ -263,7 +231,6 @@ import_database() {
 
     log_info "========== 开始导入数据库到 ${env_type} 环境 =========="
 
-    check_config
     check_mysql
     check_backup_files
     import_structure "$env_type"
@@ -278,7 +245,7 @@ show_usage() {
     echo "用法: $0 <environment>"
     echo ""
     echo "环境:"
-    echo "  dev, development     开发环境（源数据库）"
+    echo "  dev, development     开发环境"
     echo "  test                 测试环境"
     echo "  production, prod     生产环境"
     echo ""
@@ -288,9 +255,13 @@ show_usage() {
     echo "    - ccdi_structure.sql (表结构)"
     echo "    - ccdi_data.sql (数据)"
     echo ""
+    echo "配置:"
+    echo "  数据库配置已内置在脚本顶部，请根据实际情况修改"
+    echo "  配置项: DEV_DB_*, TEST_DB_*, PROD_DB_*"
+    echo ""
     echo "前置条件:"
-    echo "  1. 已执行 ./export_database.sh export 导出数据库"
-    echo "  2. 已配置 db_config.conf 文件"
+    echo "  1. 已执行 ./export_database.sh 导出数据库"
+    echo "  2. 已在脚本顶部配置目标环境数据库信息"
     echo ""
     echo "示例:"
     echo "  $0 test          # 导入到测试环境"