- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.7.2
* Operating System version: OSX
* Java version: 1.8

### Steps to reproduce this issue

```java
@Test
public void testSerializeSqlDate() throws IOException, ClassNotFoundException {
    java.sql.Date originTime = new java.sql.Date(System.currentTimeMillis());
    this.protostuffObjectOutput.writeObject(originTime);
    this.flushToInput();

    java.sql.Date serializedTime = protostuffObjectInput.readObject(java.sql.Date.class);
    assertThat(serializedTime, is(originTime));
}
```
### Expected Result

What do you expected from the above steps？

### Actual Result

```shell
Expected: is <2019-06-25>
   but: was <1970-01-01>
Expected :is <2019-06-25>
  Actual   :<1970-01-01>
```

If there is an exception, please attach the exception trace:

```
```

package org.apache.dubbo.common.serialize.protostuff.utils;
import org.apache.dubbo.common.serialize.protostuff.Wrapper;
import org.apache.dubbo.common.serialize.protostuff.delegate.TimeDelegate;
import io.protostuff.runtime.DefaultIdStrategy;
import io.protostuff.runtime.RuntimeEnv;
import org.apache.dubbo.common.serialize.protostuff.delegate.TimestampDelegate;
import java.math.BigDecimal;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.Vector;
import java.util.concurrent.ConcurrentHashMap;
/**
 * Use WrapperUtils to wrap object to {@link Wrapper}
 */
public class WrapperUtils {