添加有序的map

src/main/java/com/unissoft/MyConstant.java

@@ -1,6 +1,6 @@
 package com.unissoft;
 
-import java.util.HashMap;
+import java.util.LinkedHashMap;
 
 /**
  * 常量类
@@ -44,15 +44,12 @@ public class MyConstant {
     //reids过期时间，单位秒默认3分钟
     public static final long REDIS_SECONDS = 180;
 
-    public static final HashMap<String, String> GRADEMAP = new HashMap<String, String>() {{
+    public static final LinkedHashMap<String, String> GRADEMAP = new LinkedHashMap<String, String>() {{
         put("1", "初级");
         put("2", "中级");
         put("3", "高级");
         put("4", "技师");
         put("5", "高级技师");
-        put("6", "初级注册安全工程师");
-        put("7", "中级注册安全工程师");
-        put("8", "高级注册安全工程师");
     }};
 
 }