JdbcUtils.showTables support postgresql.

src/main/java/com/alibaba/druid/util/JdbcUtils.java

@@ -793,6 +793,9 @@ public final class JdbcUtils implements JdbcConstants {
             return OracleUtils.showTables(conn);
         }
 
+        if (JdbcConstants.POSTGRESQL.equals(dbType)) {
+            return PGUtils.showTables(conn);
+        }
         throw new SQLException("show tables dbType not support for " + dbType);
     }
 

src/main/java/com/alibaba/druid/util/PGUtils.java

@@ -16,7 +16,11 @@
 package com.alibaba.druid.util;
 
 import java.sql.Connection;
+import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.List;
 
 import javax.sql.XAConnection;
 
@@ -28,4 +32,24 @@ public class PGUtils {
     public static XAConnection createXAConnection(Connection physicalConn) throws SQLException {
         return new PGXAConnection((BaseConnection) physicalConn);
     }
+
+    public static List<String> showTables(Connection conn) throws SQLException {
+        List<String> tables = new ArrayList<String>();
+
+        Statement stmt = null;
+        ResultSet rs = null;
+        try {
+            stmt = conn.createStatement();
+            rs = stmt.executeQuery("SELECT tablename FROM pg_catalog.pg_tables where schemaname not in ('pg_catalog', 'information_schema', 'sys')");
+            while (rs.next()) {
+                String tableName = rs.getString(1);
+                tables.add(tableName);
+            }
+        } finally {
+            JdbcUtils.close(rs);
+            JdbcUtils.close(stmt);
+        }
+
+        return tables;
+    }
 }