package cn.itcast.common.springdao; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Map; import javax.sql.*; import org.apache.log4j.Logger; import org.springframework.jdbc.core.JdbcTemplate; import cn.itcast.web.common.util.UtilFuns; public class SQLDAO { private static Logger log = Logger.getLogger(SQLDAO.class); private UtilFuns utilFuns = new UtilFuns(); private JdbcTemplate jdbcTemplate; public void setDataSource(DataSource ds){ jdbcTemplate = new JdbcTemplate(ds); } public int findInt(String sql){ log.debug(sql); int i = jdbcTemplate.queryForInt(sql); return i; } public int findInt(String sql, Object[] objs){ log.debug(sql); int i = jdbcTemplate.queryForInt(sql, objs); return i; } public String getSingleValue(String sql){ log.debug(sql); StringBuffer sBuf = new StringBuffer(); List jlist = jdbcTemplate.queryForList(sql); Iterator ite = jlist.iterator(); while(ite.hasNext()){ Map map = (Map)ite.next(); for(Object o:map.keySet()){ sBuf.append(String.valueOf(map.get(o))).append(","); } } if(sBuf!=null && sBuf.length()>1){ sBuf.delete(sBuf.length()-1, sBuf.length()); //del last char } return sBuf.toString(); } public String getSingleValue(String sql, Object[] objs){ log.debug(sql); StringBuffer sBuf = new StringBuffer(); List jlist = null; if(utilFuns.arrayValid(objs)){ jlist = jdbcTemplate.queryForList(sql, objs); } else { jlist = jdbcTemplate.queryForList(sql); } Iterator ite = jlist.iterator(); while(ite.hasNext()){ Map map = (Map)ite.next(); for(Object o:map.keySet()){ sBuf.append(String.valueOf(map.get(o))).append(","); } } if(sBuf!=null && sBuf.length()>1){ sBuf.delete(sBuf.length()-1, sBuf.length()); //del last char } return sBuf.toString(); } public String[] toArray(String sql){ log.debug(sql); String[] strs = null; List aList = this.executeSQL(sql); if(aList.size()>0){ int count = aList.size(); strs = new String[ count ]; for(int i=0; i<count; i++) { strs[ i ] = String.valueOf(aList.get(i)); } return strs; }else{ return null; } } public List executeSQL(String sql){ log.debug(sql); List<String> aList = new ArrayList(); List jlist = jdbcTemplate.queryForList(sql); Iterator ite = jlist.iterator(); while(ite.hasNext()){ Map map = (Map)ite.next(); for(Object o:map.keySet()){ aList.add(map.get(o.toString()).toString()); } } return aList; } public List executeSQL(String sql, Object[] objs){ log.debug(sql); List aList = new ArrayList(); List jlist = null; if(utilFuns.arrayValid(objs)){ jlist = jdbcTemplate.queryForList(sql, objs); } else { jlist = jdbcTemplate.queryForList(sql); } Iterator ite = jlist.iterator(); while(ite.hasNext()){ Map map = (Map)ite.next(); for(Object o:map.keySet()){ aList.add((String)map.get(o)); } } return aList; } public List executeSQLForList(String sql, Object[] objs){ log.debug(sql); List aList = new ArrayList(); List jlist = null; if(utilFuns.arrayValid(objs)){ jlist = jdbcTemplate.queryForList(sql, objs); } else { jlist = jdbcTemplate.queryForList(sql); } Iterator ite = jlist.iterator(); List list; while(ite.hasNext()){ Map map = (Map)ite.next(); list = new ArrayList(); for(Object o:map.keySet()){ list.add(map.get(o)); } aList.add(list.toArray()); } return aList; } public int updateSQL(String sql){ log.debug(sql); int i = jdbcTemplate.update(sql); return i; } public int updateSQL(String sql, Object[] objs){ log.debug(sql); int i = jdbcTemplate.update(sql, objs); return i; } public int[] batchSQL(String[] sql){ log.debug(sql); return jdbcTemplate.batchUpdate(sql); } }
java 代码
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