手动实现基于webapi的jdbc可行性

        con = DriverManager.getConnection(connectionUrl, dbUsername, dbPwd);

我觉得完全可行，这样做的话，意味着只需要把底层的驱动改掉就可以兼容现在的jdbc mssql

public static Connection getSQLServerConnection(String IP, String dbname, String dbUsername, String dbPwd) throws SQLException, ClassNotFoundException {


      if(AppCns.USE_WEBAPI){
          return new LoznConnection("http://192.168.1.35:5002/sql/SQLRequestControl/str",null);
      }
      Connection con = null;
      //加上 useunicode=true;characterEncoding=UTF-8 防止中文乱码

      IP = IP.replace(",", ":");
      Class.forName("webapi.sql.Driver");
//        Class.forName("net.sourceforge.jtds.jdbc.Driver");
//      final String connectionUrl = "jdbc:sqlserver://localhost:1433;databaseName=test;integratedSecurity=true;";
      //"jdbc:sqlserver://" + IP + ":1433;databaseName=" + DBName + ";useunicode=true;characterEncoding=UTF-8"
      String connectionUrl = "jdbc:jtds:sqlserver://" + IP + ";databasename=" + dbname + ";useunicode=true;characterEncoding=UTF-8";
//        net.sourceforge.jtds.jdbc.Driver
      con = DriverManager.getConnection(connectionUrl, dbUsername, dbPwd);
      return con;
  }

image.png image.png

json转resultset

/**
 * Author:Lozn
 * Email:qssq521@gmail.com
 * 2021/12/10
 * 16:56
 */
public class JSONArrayResultSet implements ResultSet {


    public JSONArrayResultSet(JSONArray rows) {
        this.rows = rows;

        int i = 0;

    }
    private final com.alibaba.fastjson.JSONArray rows;
    private com.alibaba.fastjson.JSONObject currentRow;
    private String[] keys;

    int current = -1;

    @Override
    public boolean next() throws SQLException {
        if (current < rows.size()) {
            current++;
        } else {
            return false;
        }
        currentRow = rows.getJSONObject(current);
        int i = 0;
        keys = new String[rows.size()];
        for (String s : currentRow.keySet()) {
            keys[i] = s;
            i++;
        }
        return true;

    }

    @Override
    public void close() throws SQLException {

    }

    @Override
    public boolean wasNull() throws SQLException {
        return false;
    }

    @Override
    public String getString(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getString(key);
    }

    private String findColumnLabel(int columnIndex) {
        if (columnIndex >= 0 && columnIndex < currentRow.size()) {
            return keys[columnIndex];
        }
        return null;
    }

    @Override
    public boolean getBoolean(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getBoolean(key);
    }

    @Override
    public byte getByte(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getByte(key);
    }

    @Override
    public short getShort(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getShort(key);
    }

    @Override
    public int getInt(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getIntValue(key);
    }

    @Override
    public long getLong(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getLongValue(key);
    }

    @Override
    public float getFloat(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getFloatValue(key);
    }

    @Override
    public double getDouble(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getDoubleValue(key);
    }

    @Override
    public BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getBigDecimal(key);
    }

    @Override
    public byte[] getBytes(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return currentRow.getBytes(key);
    }

    @Override
    public Date getDate(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        java.util.Date date = currentRow.getDate(key);
        Date date_ = new Date(date.getTime());
        return date_;
    }

    @Override
    public Time getTime(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return new Time(currentRow.getDate(key).getTime());
    }

    @Override
    public Timestamp getTimestamp(int columnIndex) throws SQLException {
        String key = findColumnLabel(columnIndex);
        return new Timestamp(currentRow.getLongValue(key));
    }

    @Override
    public InputStream getAsciiStream(int columnIndex) throws SQLException {
//        String key = findColumnLabel(columnIndex);
        return null;
//        return rows.get(key);
    }

    @Override
    public InputStream getUnicodeStream(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public InputStream getBinaryStream(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public String getString(String columnLabel) throws SQLException {
        return currentRow.getString(columnLabel);
    }

    @Override
    public boolean getBoolean(String columnLabel) throws SQLException {
        return currentRow.getBoolean(columnLabel);
    }

    @Override
    public byte getByte(String columnLabel) throws SQLException {
        return currentRow.getByte(columnLabel);
    }

    @Override
    public short getShort(String columnLabel) throws SQLException {
        return currentRow.getShort(columnLabel);
    }

    @Override
    public int getInt(String columnLabel) throws SQLException {
        return currentRow.getIntValue(columnLabel);
    }

    @Override
    public long getLong(String columnLabel) throws SQLException {
        return currentRow.getLongValue(columnLabel);
    }

    @Override
    public float getFloat(String columnLabel) throws SQLException {
        return currentRow.getFloatValue(columnLabel);
    }

    @Override
    public double getDouble(String columnLabel) throws SQLException {
        return currentRow.getDoubleValue(columnLabel);
    }

    @Override
    public BigDecimal getBigDecimal(String columnLabel, int scale) throws SQLException {
        return currentRow.getBigDecimal(columnLabel);
    }

    @Override
    public byte[] getBytes(String columnLabel) throws SQLException {
        return currentRow.getBytes(columnLabel);
    }

    @Override
    public Date getDate(String columnLabel) throws SQLException {
        return new Date(currentRow.getDate(columnLabel).getTime());
    }

    @Override
    public Time getTime(String columnLabel) throws SQLException {
        return new Time(currentRow.getLongValue(columnLabel));
    }

    @Override
    public Timestamp getTimestamp(String columnLabel) throws SQLException {
        return new Timestamp(currentRow.getLongValue(columnLabel));
    }

    @Override
    public InputStream getAsciiStream(String columnLabel) throws SQLException {
//        return new Time(currentRow.getObject(columnLabel));
        return null;
    }

    @Override
    public InputStream getUnicodeStream(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public InputStream getBinaryStream(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public SQLWarning getWarnings() throws SQLException {
        return null;
    }

    @Override
    public void clearWarnings() throws SQLException {

    }

    @Override
    public String getCursorName() throws SQLException {
        return null;
    }

    @Override
    public ResultSetMetaData getMetaData() throws SQLException {
        return null;
    }

    @Override
    public Object getObject(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Object getObject(String columnLabel) throws SQLException {
        return currentRow.get(columnLabel);
    }

    @Override
    public int findColumn(String columnLabel) throws SQLException {
        int i = 0;
        for (String s : currentRow.keySet()) {
            if (columnLabel.equals(s)) {
                return i;
            }
            i++;
        }
        return -1;
    }

    @Override
    public Reader getCharacterStream(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Reader getCharacterStream(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
        return currentRow.getBigDecimal(findColumnLabel(columnIndex));
    }

    @Override
    public BigDecimal getBigDecimal(String columnLabel) throws SQLException {
        return currentRow.getBigDecimal(columnLabel);
    }

    @Override
    public boolean isBeforeFirst() throws SQLException {
        return current<0;
    }

    @Override
    public boolean isAfterLast() throws SQLException {
        return current>=rows.size();
    }

    @Override
    public boolean isFirst() throws SQLException {
        return current==0;
    }

    @Override
    public boolean isLast() throws SQLException {
        return current==rows.size()-1;
    }

    @Override
    public void beforeFirst() throws SQLException {
                current=-1;
    }

    @Override
    public void afterLast() throws SQLException {
                current=rows.size();
    }

    @Override
    public boolean first() throws SQLException {
        if(rows!=null&&rows.size()>0){
            current=0;
            return true;
        }

        return false;
    }

    @Override
    public boolean last() throws SQLException {
        if(rows!=null&&rows.size()>0){
            current=rows.size()-1;
            return true;
        }
        return false;
    }

    @Override
    public int getRow() throws SQLException {
        return rows.size();
    }

    @Override
    public boolean absolute(int row) throws SQLException {
        return false;
    }

    @Override
    public boolean relative(int rows) throws SQLException {
        return false;
    }

    @Override
    public boolean previous() throws SQLException {
        return false;
    }

    @Override
    public void setFetchDirection(int direction) throws SQLException {

    }

    @Override
    public int getFetchDirection() throws SQLException {
        return 0;
    }

    @Override
    public void setFetchSize(int rows) throws SQLException {

    }

    @Override
    public int getFetchSize() throws SQLException {
        return 0;
    }

    @Override
    public int getType() throws SQLException {
        return 0;
    }

    @Override
    public int getConcurrency() throws SQLException {
        return 0;
    }

    @Override
    public boolean rowUpdated() throws SQLException {
        return false;
    }

    @Override
    public boolean rowInserted() throws SQLException {
        return false;
    }

    @Override
    public boolean rowDeleted() throws SQLException {
        return false;
    }

    @Override
    public void updateNull(int columnIndex) throws SQLException {

    }

    @Override
    public void updateBoolean(int columnIndex, boolean x) throws SQLException {

    }

    @Override
    public void updateByte(int columnIndex, byte x) throws SQLException {

    }

    @Override
    public void updateShort(int columnIndex, short x) throws SQLException {

    }

    @Override
    public void updateInt(int columnIndex, int x) throws SQLException {

    }

    @Override
    public void updateLong(int columnIndex, long x) throws SQLException {

    }

    @Override
    public void updateFloat(int columnIndex, float x) throws SQLException {

    }

    @Override
    public void updateDouble(int columnIndex, double x) throws SQLException {

    }

    @Override
    public void updateBigDecimal(int columnIndex, BigDecimal x) throws SQLException {

    }

    @Override
    public void updateString(int columnIndex, String x) throws SQLException {

    }

    @Override
    public void updateBytes(int columnIndex, byte[] x) throws SQLException {

    }

    @Override
    public void updateDate(int columnIndex, Date x) throws SQLException {

    }

    @Override
    public void updateTime(int columnIndex, Time x) throws SQLException {

    }

    @Override
    public void updateTimestamp(int columnIndex, Timestamp x) throws SQLException {

    }

    @Override
    public void updateAsciiStream(int columnIndex, InputStream x, int length) throws SQLException {

    }

    @Override
    public void updateBinaryStream(int columnIndex, InputStream x, int length) throws SQLException {

    }

    @Override
    public void updateCharacterStream(int columnIndex, Reader x, int length) throws SQLException {

    }

    @Override
    public void updateObject(int columnIndex, Object x, int scaleOrLength) throws SQLException {

    }

    @Override
    public void updateObject(int columnIndex, Object x) throws SQLException {

    }

    @Override
    public void updateNull(String columnLabel) throws SQLException {

    }

    @Override
    public void updateBoolean(String columnLabel, boolean x) throws SQLException {

    }

    @Override
    public void updateByte(String columnLabel, byte x) throws SQLException {

    }

    @Override
    public void updateShort(String columnLabel, short x) throws SQLException {

    }

    @Override
    public void updateInt(String columnLabel, int x) throws SQLException {

    }

    @Override
    public void updateLong(String columnLabel, long x) throws SQLException {

    }

    @Override
    public void updateFloat(String columnLabel, float x) throws SQLException {

    }

    @Override
    public void updateDouble(String columnLabel, double x) throws SQLException {

    }

    @Override
    public void updateBigDecimal(String columnLabel, BigDecimal x) throws SQLException {

    }

    @Override
    public void updateString(String columnLabel, String x) throws SQLException {

    }

    @Override
    public void updateBytes(String columnLabel, byte[] x) throws SQLException {

    }

    @Override
    public void updateDate(String columnLabel, Date x) throws SQLException {

    }

    @Override
    public void updateTime(String columnLabel, Time x) throws SQLException {

    }

    @Override
    public void updateTimestamp(String columnLabel, Timestamp x) throws SQLException {

    }

    @Override
    public void updateAsciiStream(String columnLabel, InputStream x, int length) throws SQLException {

    }

    @Override
    public void updateBinaryStream(String columnLabel, InputStream x, int length) throws SQLException {

    }

    @Override
    public void updateCharacterStream(String columnLabel, Reader reader, int length) throws SQLException {

    }

    @Override
    public void updateObject(String columnLabel, Object x, int scaleOrLength) throws SQLException {

    }

    @Override
    public void updateObject(String columnLabel, Object x) throws SQLException {

    }

    @Override
    public void insertRow() throws SQLException {

    }

    @Override
    public void updateRow() throws SQLException {

    }

    @Override
    public void deleteRow() throws SQLException {

    }

    @Override
    public void refreshRow() throws SQLException {

    }

    @Override
    public void cancelRowUpdates() throws SQLException {

    }

    @Override
    public void moveToInsertRow() throws SQLException {

    }

    @Override
    public void moveToCurrentRow() throws SQLException {

    }

    @Override
    public Statement getStatement() throws SQLException {
        return null;
    }

    @Override
    public Object getObject(int columnIndex, Map<String, Class<?>> map) throws SQLException {
        return null;
    }

    @Override
    public Ref getRef(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Blob getBlob(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Clob getClob(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Array getArray(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Object getObject(String columnLabel, Map<String, Class<?>> map) throws SQLException {
        return null;
    }

    @Override
    public Ref getRef(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public Blob getBlob(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public Clob getClob(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public Array getArray(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public Date getDate(int columnIndex, Calendar cal) throws SQLException {
        return null;
    }

    @Override
    public Date getDate(String columnLabel, Calendar cal) throws SQLException {
        return null;
    }

    @Override
    public Time getTime(int columnIndex, Calendar cal) throws SQLException {
        return null;
    }

    @Override
    public Time getTime(String columnLabel, Calendar cal) throws SQLException {
        return null;
    }

    @Override
    public Timestamp getTimestamp(int columnIndex, Calendar cal) throws SQLException {
        return null;
    }

    @Override
    public Timestamp getTimestamp(String columnLabel, Calendar cal) throws SQLException {
        return null;
    }

    @Override
    public URL getURL(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public URL getURL(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public void updateRef(int columnIndex, Ref x) throws SQLException {

    }

    @Override
    public void updateRef(String columnLabel, Ref x) throws SQLException {

    }

    @Override
    public void updateBlob(int columnIndex, Blob x) throws SQLException {

    }

    @Override
    public void updateBlob(String columnLabel, Blob x) throws SQLException {

    }

    @Override
    public void updateClob(int columnIndex, Clob x) throws SQLException {

    }

    @Override
    public void updateClob(String columnLabel, Clob x) throws SQLException {

    }

    @Override
    public void updateArray(int columnIndex, Array x) throws SQLException {

    }

    @Override
    public void updateArray(String columnLabel, Array x) throws SQLException {

    }

    @Override
    public RowId getRowId(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public RowId getRowId(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public void updateRowId(int columnIndex, RowId x) throws SQLException {

    }

    @Override
    public void updateRowId(String columnLabel, RowId x) throws SQLException {

    }

    @Override
    public int getHoldability() throws SQLException {
        return 0;
    }

    @Override
    public boolean isClosed() throws SQLException {
        return false;
    }

    @Override
    public void updateNString(int columnIndex, String nString) throws SQLException {

    }

    @Override
    public void updateNString(String columnLabel, String nString) throws SQLException {

    }

    @Override
    public void updateNClob(int columnIndex, NClob nClob) throws SQLException {

    }

    @Override
    public void updateNClob(String columnLabel, NClob nClob) throws SQLException {

    }

    @Override
    public NClob getNClob(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public NClob getNClob(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public SQLXML getSQLXML(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public SQLXML getSQLXML(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public void updateSQLXML(int columnIndex, SQLXML xmlObject) throws SQLException {

    }

    @Override
    public void updateSQLXML(String columnLabel, SQLXML xmlObject) throws SQLException {

    }

    @Override
    public String getNString(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public String getNString(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public Reader getNCharacterStream(int columnIndex) throws SQLException {
        return null;
    }

    @Override
    public Reader getNCharacterStream(String columnLabel) throws SQLException {
        return null;
    }

    @Override
    public void updateNCharacterStream(int columnIndex, Reader x, long length) throws SQLException {

    }

    @Override
    public void updateNCharacterStream(String columnLabel, Reader reader, long length) throws SQLException {

    }

    @Override
    public void updateAsciiStream(int columnIndex, InputStream x, long length) throws SQLException {

    }

    @Override
    public void updateBinaryStream(int columnIndex, InputStream x, long length) throws SQLException {

    }

    @Override
    public void updateCharacterStream(int columnIndex, Reader x, long length) throws SQLException {

    }

    @Override
    public void updateAsciiStream(String columnLabel, InputStream x, long length) throws SQLException {

    }

    @Override
    public void updateBinaryStream(String columnLabel, InputStream x, long length) throws SQLException {

    }

    @Override
    public void updateCharacterStream(String columnLabel, Reader reader, long length) throws SQLException {

    }

    @Override
    public void updateBlob(int columnIndex, InputStream inputStream, long length) throws SQLException {

    }

    @Override
    public void updateBlob(String columnLabel, InputStream inputStream, long length) throws SQLException {

    }

    @Override
    public void updateClob(int columnIndex, Reader reader, long length) throws SQLException {

    }

    @Override
    public void updateClob(String columnLabel, Reader reader, long length) throws SQLException {

    }

    @Override
    public void updateNClob(int columnIndex, Reader reader, long length) throws SQLException {

    }

    @Override
    public void updateNClob(String columnLabel, Reader reader, long length) throws SQLException {

    }

    @Override
    public void updateNCharacterStream(int columnIndex, Reader x) throws SQLException {

    }

    @Override
    public void updateNCharacterStream(String columnLabel, Reader reader) throws SQLException {

    }

    @Override
    public void updateAsciiStream(int columnIndex, InputStream x) throws SQLException {

    }

    @Override
    public void updateBinaryStream(int columnIndex, InputStream x) throws SQLException {

    }

    @Override
    public void updateCharacterStream(int columnIndex, Reader x) throws SQLException {

    }

    @Override
    public void updateAsciiStream(String columnLabel, InputStream x) throws SQLException {

    }

    @Override
    public void updateBinaryStream(String columnLabel, InputStream x) throws SQLException {

    }

    @Override
    public void updateCharacterStream(String columnLabel, Reader reader) throws SQLException {

    }

    @Override
    public void updateBlob(int columnIndex, InputStream inputStream) throws SQLException {

    }

    @Override
    public void updateBlob(String columnLabel, InputStream inputStream) throws SQLException {

    }

    @Override
    public void updateClob(int columnIndex, Reader reader) throws SQLException {

    }

    @Override
    public void updateClob(String columnLabel, Reader reader) throws SQLException {

    }

    @Override
    public void updateNClob(int columnIndex, Reader reader) throws SQLException {

    }

    @Override
    public void updateNClob(String columnLabel, Reader reader) throws SQLException {

    }

    @Override
    public <T> T unwrap(Class<T> iface) throws SQLException {
        return null;
    }

    @Override
    public boolean isWrapperFor(Class<?> iface) throws SQLException {
        return false;
    }
}