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47 lines (45 loc) · 1.09 KB
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package helloSQL;
import java.sql.SQLException;
import java.sql.Statement;
public class SqlFun {
//SQL的增删改操作
//SqL的增删改语法：
/**
* 增：insert into hero values (null, '盖伦', 616, 100)
* 删：delete from hero where id = 1
* 改：update hero set hp = 818 where id = 1
* @throws SQLException
*/
public static void sqlFun(Statement s,String action, String tableName, String data) throws SQLException {
//增
StringBuilder sb = new StringBuilder();
SqlAct act = SqlAct.valueOf(action);//使用枚举类型
switch(act) {
case INSERT:
sb.append("insert into ");
sb.append(tableName);
sb.append(" values(");
sb.append(data);
sb.append(")");
break;
case DELETE:
sb.append("delete from ");
sb.append(tableName);
if(data==null)
break;
sb.append(" where ");
sb.append(data);
break;
case UPDATE:
sb.append("update ");
sb.append(tableName);
sb.append(" set ");
sb.append(data);
break;
case NULL:
sb.append("test");
break;
}
s.execute(sb.toString());
}
}