修复漏洞（对报错信息进行自定义，避免泄露系统敏感信息）

ruoyi-bussiness/src/main/java/com/ruoyi/cms/controller/app/AppSkillController.java

@@ -38,6 +38,9 @@ public class AppSkillController extends BaseController {
     @ApiOperation("获取技能列表")
     @GetMapping("/list")
     public TableDataInfo list(AppSkill appSkill){
+        if(appSkill.getUserId()==null){
+            return error(400,"无效的用户id!");
+        }
         startPage();
         List<AppSkill> list=appSkillService.getList(appSkill);
         return getDataTable(list);

ruoyi-bussiness/src/main/java/com/ruoyi/cms/controller/cms/CmsSkillController.java

@@ -43,6 +43,9 @@ public class CmsSkillController extends BaseController {
     @ApiOperation("获取技能列表")
     @GetMapping("/list")
     public TableDataInfo list(AppSkill appSkill){
+        if(appSkill.getUserId()==null){
+            return error(400,"无效的用户id!");
+        }
         startPage();
         List<AppSkill> list=appSkillService.getList(appSkill);
         return getDataTable(list);

ruoyi-bussiness/src/main/java/com/ruoyi/cms/controller/cms/EmployeeConfirmController.java

@@ -37,6 +37,9 @@ public class EmployeeConfirmController extends BaseController {
 //    @PreAuthorize("@ss.hasPermi('cms:employeeConfirm:list')")
     @RequestMapping("/list")
     public TableDataInfo list(EmployeeConfirm employeeConfirm){
+        if(employeeConfirm.getCompanyId()==null){
+            return error(400,"无效的企业id!");
+        }
         List<EmployeeConfirm> list=employeeConfirmService.getEmployeeConfirmList(employeeConfirm);
         return getDataTable(list);
     }

ruoyi-bussiness/src/main/java/com/ruoyi/cms/util/StringUtil.java

@@ -229,7 +229,7 @@ public class StringUtil {
      * @param request
      * @return
      */
-    private static String getProxyServer(HttpServletRequest request) {
+    public static String getProxyServer(HttpServletRequest request) {
         if (request == null) {
             return null;
         }