进行批量更新的时候发现:
addBatch(sql);
executeBatch 抛出异常后,剩余的sql没有更新,即出现异常之前的都入库了,异常之后即使有可执行sql都不会执行。
百度资料后了解:这是DBMS数据库管理系统控制的,有的DBMS在异常之后,剩下的sql也会执行,有的DBMS异常之后其余的不入库。
我的改进方法如下:public static boolean bachInsertData(List<String> sqlList) { boolean bool = false; Connection conn = null;
public static boolean bachInsertData(List<String> sqlList) {
boolean bool = false;
Connection conn = null;
Statement stm = null;
try {
conn = MyDAO.getConnection();
conn.setAutoCommit(false);
stm = conn.createStatement();
for (String sql : sqlList) {
stm.addBatch(sql);
}
stm.executeBatch();
conn.commit();
bool = true;
} catch (Exception e) {
if(e instanceof BatchUpdateException){
BatchUpdateException bException = (BatchUpdateException)e;
int[] s = bException.getUpdateCounts();
logger.info("更新失败数据:"+sqlList.get(s.length));
if(s.length+1<sqlList.size()){
List<String> sList = sqlList.subList(s.length+1, sqlList.size());
bachInsertData(sList);
}
}else{
e.printStackTrace();
try {
if (stm != null)
stm.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
try {
conn.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
} finally {
try {
if (stm != null)
stm.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
try {
conn.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
return bool;
}
以前不知道哇啊啊啊啊,好多得改!!!