Merge pull request #2879 from tuohai666/date

fix getString() from Date format error

sharding-jdbc/sharding-jdbc-core/src/main/java/org/apache/shardingsphere/shardingjdbc/jdbc/core/resultset/ResultSetUtil.java

@@ -125,6 +125,8 @@ public final class ResultSetUtil {
                 return new Time(date.getTime());
             case "java.sql.Timestamp":
                 return new Timestamp(date.getTime());
+            case "java.lang.String":
+                return date.toString();
             default:
                 throw new ShardingException("Unsupported Date type:%s", convertType);
         }

sharding-jdbc/sharding-jdbc-core/src/test/java/org/apache/shardingsphere/shardingjdbc/jdbc/core/resultset/ResultSetUtilTest.java

@@ -84,6 +84,7 @@ public final class ResultSetUtilTest {
         assertThat((java.sql.Date) ResultSetUtil.convertValue(now, java.sql.Date.class), is(now));
         assertThat((Time) ResultSetUtil.convertValue(now, Time.class), is(now));
         assertThat((Timestamp) ResultSetUtil.convertValue(now, Timestamp.class), is(new Timestamp(now.getTime())));
+        assertThat((String) ResultSetUtil.convertValue(now, String.class), is(now.toString()));
     }
     
     @Test