package test;
import java.sql.*;
import java.util.*;
import javax.sql.rowset.CachedRowSet;
import oracle.jdbc.rowset.OracleCachedRowSet;
import com.sun.rowset.CachedRowSetImpl;
/**
* Title: 数据库操作类，不带显示事物的方法
* Description: 以一种新的方式来操作数据库使用SingletonDataSource单态类来取得连接
* Copyright: Copyright (c) 2007
*/
public class DBManager {
public DBManager() {
}
/**
* 执行任意SQL语句SELECT,INSERT,UPDATE or DELETE，不要求返回任何信息的SQL语句 隐式事物处理
* @param sql String 要执行的任何SQL语句
* @return boolean 成功执行返回true,否则flase
* @throws Exception
*/
public boolean execute(String sql) throws Exception {
System.out.println("execute：" + sql);
boolean re = false;
Connection con = null;
PreparedStatement pstmt = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt =con.prepareStatement(sql);
re = pstmt.execute();
} finally {
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return re;
}
/**
*
* @param sql
* @param value
* @param type
* @return
* @throws Exception
*/
public boolean execute(String sql, String[] value, int[] type)
throws Exception {
System.out.println("execute：" + sql);
boolean re = false;
Connection con = null;
PreparedStatement pstmt = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
this.setParameters(pstmt,value,type); //调用私有方法设置参数
re = pstmt.execute();
} finally {
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return re;
}
/**
* 执行查询，返回结果集 隐式事物处理
* @param sql String 要执行的SELECT语句
* @return CachedRowSet 未查到记录则返回null
* @throws Exception
*/
public CachedRowSet executeQueryRowSet(String sql) throws Exception {
System.out.println("executeQueryRowSet：" + sql);
CachedRowSet crs = null;
Connection con = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
con = SingletonDataSource.getInstance().getConnection();
/*stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
* java.sql.SQLException: 不允许的操作: Unsupported syntax for refreshRow()
* Oracle: Unsupported syntax for refreshRow()报此错使用以下方式解决
* 1、con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
* 2、con.createStatement();
*/
pstmt=con.prepareStatement(sql);
rs = pstmt.executeQuery();
if (!(rs.isBeforeFirst() == rs.isAfterLast())) {
crs = new CachedRowSetImpl();
crs.populate(rs);
}
} finally {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return crs;
}
/**
* 执行高效率的SELECT语句，使用ORACLE的SQL特点
* @param sql String 带?号的SELECT语句
* @param value String[] ?对应的值
* @param type int[] ?对应的值的数据库表中的类型
* @return CachedRowSet 未查到记录则返回null
* @throws Exception
*/
public CachedRowSet executeQueryRowSet(String sql, String[] value,
int[] type) throws Exception {
System.out.println("executeQueryRowSet：" + sql);
CachedRowSet crs = null;
Connection con = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
this.setParameters(pstmt,value,type); //调用私有方法设置参数
rs = pstmt.executeQuery();
if (!(rs.isBeforeFirst() == rs.isAfterLast())) {
crs = new CachedRowSetImpl();
crs.populate(rs);
}
} finally {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return crs;
}
/**
* 执行查询，返回Map单条记录，如查执行结果有多条记录的情况下也只返回第一条记录 隐式事物处理
* @param sql String 要执行的SELECT语句
* @return Map 未查到记录则返回null，使用列名的大家做为Map的Key，列值对象为Map的value
* @throws Exception
*/
public Map executeQueryMap(String sql) throws Exception {
System.out.println("executeQueryMap：" + sql);
Map map = null;
Connection con = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt =con.prepareStatement(sql);
rs = pstmt.executeQuery();
if (rs.next()) { // 有记录的情况
map = new HashMap();
ResultSetMetaData rsm = rs.getMetaData();
int colnum = rsm.getColumnCount(); // 得到记录的列数
for (int i = 1; i <= colnum; i++) {
// rsm.getColumnName(i).toUpperCase()统一列名大写
// rs.getObject(i)更的值为对象类型
map
.put(rsm.getColumnName(i).toUpperCase(), rs
.getObject(i));
}
}
} finally {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return map;
}
/**
* 执行高效率的SELECT语句，使用ORACLE的SQL特点
* @param sql String 带？号的SELECT语句
* @param value String[] ？对应的值
* @param type int[] ？对应的值的数据库表中的类型
* @return Map 未查到记录则返回null，使用列名的大家做为Map的Key，列值对象为Map的value
* @throws Exception
*/
public Map executeQueryMap(String sql, String[] value, int[] type)
throws Exception {
System.out.println("executeQueryMap：" + sql);
Map map = null;
Connection con = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
this.setParameters(pstmt,value,type); //调用私有方法设置参数
rs = pstmt.executeQuery();
if (rs.next()) { // 有记录的情况
map = new HashMap();
ResultSetMetaData rsm = rs.getMetaData();
int colnum = rsm.getColumnCount(); // 得到记录的列数
for (int i = 1; i <= colnum; i++) {
// rsm.getColumnName(i).toUpperCase()统一列名大写
// rs.getObject(i)更的值为对象类型
map
.put(rsm.getColumnName(i).toUpperCase(), rs
.getObject(i));
}
}
} finally {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return map;
}
/**
* 执行更新语句INSERT,UPDATE or DELETE
* @param sql String 要执行的SQL语句
* @return int 如果执行INSERT,UPDATE or DELETE则返回影响的记录行数,如果执行没有返回值的语句则返回为0
* @throws Exception
*/
public int executeUpdate(String sql) throws Exception {
System.out.println("executeUpdate：" + sql);
int re = 0;
Connection con = null;
PreparedStatement pstmt = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt = con.prepareStatement(sql);
re = pstmt.executeUpdate();
} finally {
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return re;
}
/**
* 执行更新语句INSERT,UPDATE or DELETE
* @param sql String 要执行的带有？号的INSERT,UPDATE or DELETE语句
* @param value String[] ？对应的值
* @param type int[] ？对应的值的数据库表中的类型
* @return int 如果执行INSERT,UPDATE or DELETE则返回影响的记录行数,如果执行没有返回值的语句则返回为0
* @throws Exception
*/
public int executeUpdate(String sql, String[] value, int[] type)
throws Exception {
System.out.println("executeUpdate：" + sql);
int re = 0;
Connection con = null;
PreparedStatement pstmt = null;
try {
con = SingletonDataSource.getInstance().getConnection();
pstmt = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
this.setParameters(pstmt,value,type); //调用私有方法设置参数
re = pstmt.executeUpdate(); // 影响的记录行数
} finally {
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
}
return re;
}
/**
私有方法用来设置
* @param pstmt PreparedStatement对象的参数
* @param value 参数值
* @param type 参数类型
* @throws Exception
*/
private void setParameters(PreparedStatement pstmt,String[] value,int[] type)throws Exception{
int j = 1;
for (int i = 0; i < value.length; i++) {
switch (type[i]) {
case Types.INTEGER:
pstmt.setInt(j, Integer.parseInt(value[i]));
System.out.println("Parameter("+i+") INTEGER "+value[i]);
break;
case Types.FLOAT:
case Types.DOUBLE:
case Types.DECIMAL:
case Types.NUMERIC:
pstmt.setDouble(j, Double.parseDouble(value[i]));
System.out.println("Parameter("+i+") FLOAT、DOUBLE、DECIMAL、NUMERIC "+value[i]);
break;
case Types.CHAR:
case Types.VARCHAR:
case Types.LONGVARCHAR:
pstmt.setString(j, value[i]);
System.out.println("Parameter("+i+") CHAR、VARCHAR、LONGVARCHAR "+value[i]);
break;
case Types.DATE:
case Types.TIMESTAMP:
pstmt.setString(j, value[i]);
System.out.println("Parameter("+i+") DATE、TIMESTAMP "+value[i]);
break;
case Types.BOOLEAN:
// Boolean.parseBoolean(value[i]) JDK5API
pstmt.setBoolean(j, Boolean.getBoolean(value[i]));
System.out.println("Parameter("+i+") BOOLEAN "+value[i]);
break;
}
j = j + 1;
}
}
/**
* 执行记录的查询(调用存储过程)
* @param procName：调用存储过程的名称；
* @param returnType:游标返回类型
* 0为CachedRowSet以及各种类型
* @param outParameter：传入输出参数的类型，例如：new int[]{Types.REF,Types.REF,Types.VARCHAR},
* 表示所调用的存储过程前两个输出结果的类型为游标类型，第三个输出结果的类型为VARCHAR2类型。
* @param args 所调用存储过程的输入参数
* @return List<Object> 存储过程的输出结果
*
*/
public List<Object> executeProc(String procName,int returnType,int[] outParameter,Object... args) throws Exception {
List<Object> list = null;
Connection con = null;
CallableStatement cstmt = null;
try {
con = SingletonDataSource.getInstance().getConnection();
int iInStart = 1;// 存储过程输入参数的起始位
// 统计问号的个数
int parameterCount = args.length+outParameter.length; //调用的存储过程的总参数个数
// 组装带问号的SQL
String sql = "{call " + procName + "(";
for (int i = 1; i <= parameterCount; i++) {
if (i == parameterCount){
sql += "?";
}else{
sql += "?,";
}
}
sql += ")}";
System.out.println("executeProc："+sql);
cstmt = con.prepareCall(sql);
for (int i = 0; i < args.length; i++) {// 循环设定存储过程的输入参数
cstmt.setObject(iInStart + i, args[i]);
System.out.println("设置输入参数:"+iInStart+" "+args[i]);
}
int iOutStart = args.length + iInStart;// 存储过程输出参数的起始位
for (int i = 0; i < outParameter.length; i++) {// 循环设定存储过程的输出参数
if (outParameter[i]==Types.REF){ //代表游标
cstmt.registerOutParameter(i + iOutStart, oracle.jdbc.driver.OracleTypes.CURSOR);
System.out.println("设置输出参数:"+(i + iOutStart)+" 游标");
}else if((outParameter[i]==Types.INTEGER)){
cstmt.registerOutParameter(i + iOutStart, Types.INTEGER);
System.out.println("设置输出参数:"+(i + iOutStart)+" 数值型");
}else{
cstmt.registerOutParameter(i + iOutStart, Types.VARCHAR);
System.out.println("设置输出参数:"+(i + iOutStart)+" 字符型");
}
}
cstmt.execute(); //执行
list = new ArrayList<Object>();
switch (returnType) {
case 0:// 把存储过程中返回的游标转换为CachedRowSet类型输出
for (int i = 0; i < outParameter.length; i++) {// 循环获取存储过程的输出结果，包括游标、字符串
if (outParameter[i]==Types.REF) { //处理游标
//CachedRowSet crs=new CachedRowSetImpl();
OracleCachedRowSet crs=new OracleCachedRowSet(); //使用Oracle10g的数据则必须要用10g的驱动,Oracle 10g驱动解决了“ORA-01002: 读取违反顺序”这个问题
if (cstmt.getObject(i + iOutStart) != null){
crs.populate((ResultSet)cstmt.getObject(i + iOutStart));
}
list.add(crs);
} else{ //非游标
list.add(cstmt.getObject(i + iOutStart));
}
}
break;
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
cstmt.close();
//con.close();
}
return list;
}
/**
* 主函数做测试用
*
* @param args
* String[]
* @throws Exception
*/
public static void main(String[] args) throws Exception {
DBManager dbm = new DBManager();
//p_report_bzyb.p_bzyb(reportdate in varchar2,limited out integer,result1 out sys_refcursor,result2 out sys_refcursor,result3 out sys_refcursor)
List list=dbm.executeProc("p_report_bzyb.p_bzyb",0,new int[]{Types.INTEGER,Types.REF,Types.REF,Types.REF},"2007-06-01");
//p_report_4_realtime.p_report_4_rt(in_xz in varchar2,in_tjqsrq in varchar2,in_tjjzrq in varchar2,c1 OUT sys_refcursor)
//List list=dbm.executeProc("p_report_4_realtime.p_report_4_rt",0,new int[]{Types.REF},"43048101","2007-04-10","2007-09-10");
//dbm.execute("update dept set dname=? where deptno=? ",new String[]{"sdfsdfsad","51"},new int[]{Types.VARCHAR,Types.NUMERIC});
// Connection con = SingletonDataSource.getInstance().getConnection();
// CachedRowSet crs = dbm.executeQueryRowSet(
// "SELECT EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO FROM EMP WHERE
// EMPNO >7654",
// con);
// while (crs.next()) {
// System.out.println(crs.getString("EMPNO") + " " +
// crs.getString("ENAME"));
// }
// System.out.println("########################");
// Map map = dbm.executeQueryMap(
// "SELECT EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO FROM EMP WHERE
// EMPNO=7654",
// con);
// System.out.println(map.get("EMPNO") + " " + map.get("ENAME") + " " +
// map.get("COMM"));
// con.close();
/*
* String sql = "select * from emp where comm=?"; String[] value = new
* String[] {"500"}; int[] type = {Types.DOUBLE}; Map map =
* dbm.executeQueryMap(sql, value, type, null); //Map map =
* dbm.executeQueryMap("select * from emp where empno=? and ename=?",new
* String[] {"7654","MARTIN"},new int[]{Types.INTEGER,Types.VARCHAR},
* null); if (map != null) { System.out.println(map.get("EMPNO") + " " +
* map.get("ENAME")); }
*/
/*
* String sql = "select * from emp where empno>?"; String[] value = new
* String[] {"7693"}; int[] type = {Types.INTEGER}; CachedRowSet crs =
* dbm.executeQueryRowSet(sql, value, type, null); boolean isprint =
* true; while (crs.next()) { ResultSetMetaData rsmd =
* crs.getMetaData(); int colcount = rsmd.getColumnCount(); if (isprint) {
* isprint=false; for (int i = 0; i < colcount; i++) {
* System.out.print(rsmd.getColumnName(i + 1) + "\t\t"); }
* System.out.println(); } for (int i = 0; i < colcount; i++) {
* System.out.print(crs.getString(i + 1)+"\t\t"); }
* System.out.println(); }
*/
/*
* String sql = "update emp set comm=? where comm=?"; String[] value =
* new String[] {"56.22", "0"}; int[] type = {Types.DOUBLE,
* Types.INTEGER}; System.out.println(dbm.executeUpdate(sql, value,
* type, null));
*/
// System.out.println(dbm.selectList("test", "empno", "ename", true,
// "","select * from emp", null, null));
}
}
