后台数据库类型为datetime的数据传到前台变为时间戳的解决办法

/**
 * json 日期转换类
 * @author 
 *
 */
public class TimestampJsonValueProcessor implements JsonValueProcessor{
  public static final String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";
  private DateFormat dateFormat;
  
  public TimestampJsonValueProcessor(String datePattern) {
    if(datePattern != null)
      dateFormat = new SimpleDateFormat(datePattern);
    else
      dateFormat = new SimpleDateFormat(DEFAULT_DATE_PATTERN);
  }
  
  public Object processArrayValue(Object value, JsonConfig jsonConfig) {
    return process(value);
  }
  
  public Object processObjectValue(String key, Object value,JsonConfig jsonConfig) {
    return process(value);
  }
  
  private Object process(Object value) {
    if (value == null) {
      return "";
    }else if(value instanceof java.util.Date){
      return dateFormat.format((java.util.Date) value);
    }else{
      return dateFormat.format((Timestamp) value);
    }
  }
}

/**
 * json 日期转换类
 * @author 
 *
 */
public class LobJsonValueProcessor implements JsonValueProcessor{
  public LobJsonValueProcessor() {
  }
  
  public Object processArrayValue(Object value, JsonConfig jsonConfig) {
    return process(value);
  }
  
  public Object processObjectValue(String key, Object value,JsonConfig jsonConfig) {
    return process(value);
  }
  
  private Object process(Object value) {
    if (value == null) {
      return "";
    }else if(value instanceof oracle.sql.CLOB){
      return ClobToString((CLOB) value);
    }else{
      return "";
    }
  }
  private  String ClobToString(CLOB clob){
    String reString = "";
    try{
      Reader is = clob.getCharacterStream();// 得到流
      BufferedReader br = new BufferedReader(is);
      String s = br.readLine();
      StringBuffer sb = new StringBuffer();
      while (s != null) {// 执行循环将字符串全部取出付值给 StringBuffer由StringBuffer转成STRING
        sb.append(s);
        s = br.readLine();
      }
      reString = sb.toString();
    }catch (Exception e){
      e.printStackTrace();
    }
    return reString;
  }
}

/**
   * 注册json日期转换类
   * @return
   */
  public JsonConfig registerJsonTimestampProcessor(){
    JsonConfig config = new JsonConfig();
    config.registerJsonValueProcessor(Date.class,new TimestampJsonValueProcessor("yyyy-MM-dd HH:mm:ss"));
    config.registerJsonValueProcessor(Timestamp.class,new TimestampJsonValueProcessor("yyyy-MM-dd HH:mm:ss"));
    config.registerJsonValueProcessor(java.sql.Date.class,new TimestampJsonValueProcessor("yyyy-MM-dd HH:mm:ss"));
    config.registerJsonValueProcessor(oracle.sql.CLOB.class,new LobJsonValueProcessor());
    return config;
  }

JSONArray nodes = JSONArray.fromObject(retNodes, this.registerJsonTimestampProcessor());