refactor(hbase): 重构 HBase 客户端连接方式- 替换 HBaseAdmin为 Admin 接口，并使用 try-with-resources 自动管理资源

- 移除不必要的条件判断，简化代码
- 新增 MyConnect 类，实现 HBase 连接的初始化和关闭
- 优化数据过滤逻辑，使用 BinaryComparator 替代 SubstringComparator
-增加空值检查，提高数据处理的健壮性

src/main/java/EmpHBaseClient.java

@@ -16,19 +16,19 @@ public class EmpHBaseClient {
 
     // 创建职工表结构
     public void createEmpTable() throws IOException {
-        HBaseAdmin admin = new HBaseAdmin(conf);
+        try (Admin admin = connection.getAdmin()) {
-        if (admin.tableExists("emp1520")) {
+            if (admin.tableExists(TableName.valueOf("emp1520"))) {
-            System.out.println("Table already exists");
+                System.out.println("Table already exists");
-            return;
+                return;
+            }
+            HTableDescriptor tableDesc = new HTableDescriptor(TableName.valueOf("emp1520"));
+            tableDesc.addFamily(new HColumnDescriptor("empnum")); // 存储员工ID
+            tableDesc.addFamily(new HColumnDescriptor("info")); // 存储基本信息
+            tableDesc.addFamily(new HColumnDescriptor("salary")); // 存储薪资
+            tableDesc.addFamily(new HColumnDescriptor("performance")); // 存储绩效信息
+            tableDesc.addFamily(new HColumnDescriptor("training")); // 存储培训课程
+            admin.createTable(tableDesc);
         }
-        HTableDescriptor tableDesc = new HTableDescriptor(TableName.valueOf("emp1520"));
-        tableDesc.addFamily(new HColumnDescriptor("empnum")); // 存储员工ID
-        tableDesc.addFamily(new HColumnDescriptor("info")); // 存储基本信息
-        tableDesc.addFamily(new HColumnDescriptor("salary")); // 存储薪资
-        tableDesc.addFamily(new HColumnDescriptor("performance")); // 存储绩效信息
-        tableDesc.addFamily(new HColumnDescriptor("training")); // 存储培训课程
-        admin.createTable(tableDesc);
-        admin.close();
     }
 
     // 新增方法：生成RowKey前缀（MD5处理）
@@ -51,7 +51,7 @@ public class EmpHBaseClient {
         // info列族：基本信息存储
         put.addColumn(Bytes.toBytes("info"), Bytes.toBytes("ename"), Bytes.toBytes(ename));
         put.addColumn(Bytes.toBytes("info"), Bytes.toBytes("job"), Bytes.toBytes(job));
-        put.addColumn(Bytes.toBytes("info"), Bytes.toBytes("mgr"), Bytes.toBytes(mgr == null ? "" : mgr));
+        put.addColumn(Bytes.toBytes("info"), Bytes.toBytes("mgr"), Bytes.toBytes(mgr)); // 删除原条件判断
         put.addColumn(Bytes.toBytes("info"), Bytes.toBytes("hiredate"), Bytes.toBytes(hiredate));
         put.addColumn(Bytes.toBytes("info"), Bytes.toBytes("deptno"), Bytes.toBytes(deptno)); // 新增部门号字段存储
         // salary列族：薪资相关字段存储
@@ -99,7 +99,7 @@ public class EmpHBaseClient {
             Bytes.toBytes("empnum"),
             Bytes.toBytes("empno"),
             CompareFilter.CompareOp.GREATER_OR_EQUAL,
-            new SubstringComparator("7500")
+            new BinaryComparator(Bytes.toBytes("7500"))
         );
         filter.setFilterIfMissing(true);
         scan.setFilter(filter);
@@ -152,7 +152,7 @@ public class EmpHBaseClient {
                 String promotionDateStr = Bytes.toString(
                         result.getValue(Bytes.toBytes("performance"), Bytes.toBytes("promotion_date"))
                 );
-                if (promotionDateStr != null) {
+                if (promotionDateStr != null && !promotionDateStr.isEmpty()) { // 新增空值检查
                     records.add(new PromotionRecord(
                             Bytes.toString(result.getRow()),
                             LocalDate.parse(promotionDateStr)

src/main/java/MyConnect.java

@@ -0,0 +1,39 @@
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.client.*;
+import java.io.IOException;
+public class MyConnect{
+    public static Configuration configuration;
+    public static Connection connection;
+    public static Admin admin;
+    public static void main(String[] args)throws IOException{
+        init();
+        close();
+    }
+    //建立连接
+    public static void init(){
+        //根据 hbase-site.xml文件初始化Configuration 对象
+        configuration  = HBaseConfiguration.create();
+        try{
+            //根据 Configuration对象初始化Connection 对象
+            connection = ConnectionFactory.createConnection(configuration);
+            //获取Admin 对象实例
+            admin = connection.getAdmin();
+        }catch (IOException e){
+            e.printStackTrace();
+        }
+        System.out.println("Connect to HBase Successfully!");
+    }
+    //关闭连接
+    public static void close(){
+        try{
+            if(admin != null){
+                admin.close();
+            }
+            if(null != connection){
+                connection.close();
+            }
+        }catch (IOException e){
+            e.printStackTrace();
+        }
+    }
+}