2011年4月19日随笔档案 - 软体印象

Oracle

DECLARE
  v_test_varray VARCHAR_VARRAY_TYPE := VARCHAR_VARRAY_TYPE('57610',
                                                           '61368',
                                                           '73111',
                                                           '37208',
                                                           '57639');

V_SQL        VARCHAR2(32767);
    V_SQL_IN     VARCHAR2(32767);
    V_SQL_ROWNUM VARCHAR2(32767);
    V_ORDER      VARCHAR2(32767);
    TYPE number_index_by_string IS TABLE OF NUMBER INDEX BY VARCHAR2(10);
    v_evt_id_list  NUMBER_INDEX_BY_STRING;

Begin
  --orderArray VARCHAR_VARRAY_TYPE%type := VARCHAR_VARRAY_TYPE('11','22','33','44','55');

/*
  FOR i IN v_test_varray.FIRST .. v_test_varray.LAST LOOP
    IF v_test_varray.EXISTS(i) THEN
      DBMS_OUTPUT.put_line(i);
    END IF;
  END LOOP;
  */

  V_ORDER := Func_LIST_TO_ORDER(v_test_varray, 'A.COL_NAME');
  DBMS_OUTPUT.put_line('V_ORDER='||V_ORDER);

  V_SQL := 'SELECT * FROM TABLEA A'
           || ' WHERE '
           || ''
           || ''
           || ''
           || ''
           ;
  V_SQL := V_SQL || ' ( ' ||
               FUNC_LIST_TO_IN_SQL(v_test_varray,
                                    'COL_NAME',
                                    '''') || ')';
    V_SQL := V_SQL  ||
             ' ORDER by ( ' || V_ORDER || ')';

  DBMS_OUTPUT.put_line('V_SQL='||V_SQL);

--- SET v_evt_id_list number_index_by_string

FOR i IN v_test_varray.FIRST .. v_test_varray.LAST
  LOOP
     IF v_test_varray.EXISTS (i)
     THEN
        DBMS_OUTPUT.put_line (i);
        v_evt_id_list(v_test_varray(i)) := i;
     END IF;
  END LOOP;

--- TEST v_evt_id_list number_index_by_string
  FOR i IN v_evt_id_list.FIRST .. v_evt_id_list.LAST
  LOOP
     IF v_evt_id_list.EXISTS (i)
     THEN
        DBMS_OUTPUT.put_line (i||' = '||v_evt_id_list(i) );
     END IF;
  END LOOP;

-- GET v_evt_id_list number_index_by_string
  DBMS_OUTPUT.put_line (v_evt_id_list('73111') );

posted @ 2013-02-04 16:47 Kavin 阅读(230) | 评论 (0) | 编辑收藏

Auto complete with Jquery

1. config servlet in web.xml
<servlet>
    <servlet-name>addressData</servlet-name>
    <servlet-class>com.xxx.webapp.AddressDataAutoCompleteServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
    </servlet>

2. set autocomplete in JSP
$().ready(function() {

$("#addressLine1").autocomplete("<%=StrUtils.filterStr(request.getContextPath())%>/servlet/addressData?paramName=addressLine");
$("#addressLine2").autocomplete("<%=StrUtils.filterStr(request.getContextPath())%>/servlet/addressData?paramName=addressLine2");
$("#addressLine3").autocomplete("<%=StrUtils.filterStr(request.getContextPath())%>/servlet/addressData?paramName=addressLine3");
$("#addressCity").autocomplete("<%=StrUtils.filterStr(request.getContextPath())%>/servlet/addressData?paramName=addressCity");
$("#addressPostCode").autocomplete("<%=StrUtils.filterStr(request.getContextPath())%>/servlet/addressData?paramName=addressPostCode");
$("#firstFocusObj").focus();
});

<html:text name="" tabindex="9" style="color: grey;" onclick="clearAddressValue(this)" styleId="addressLine1" value='<%=request.getAttribute("postalAddress1") == null ? defalutAddressValue : (String)request.getAttribute("postalAddress1")%>' property="TLContactDetailForm.postalAddress1" size="50" maxlength="50" styleClass="inputText2"></html:text>

<input type="text" name="TLContactDetailForm.postalAddress1" maxlength="50" size="50" tabindex="9" value="Start typing your address and we will finish it for you" onclick="clearAddressValue(this)" id="addressLine1" style="color: grey;" class="inputText2">

3. return addresses in java class: AddressDataAutoCompleteServlet.java

package com.xxxxxx.webapp;

import com.xxxxxx.exception.ServiceException;
import com.xxxxxx.util.StrUtils;
import com.xxxxxx.webapp.context.ServiceLocator;
import com.xxxxxx.util.AddressShow;

import java.io.IOException;
import java.io.PrintWriter;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;

/**
* Servlet implementation class AddressDataAutoCompleteServlet
*/
public class AddressDataAutoCompleteServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public Logger LOG = Logger.getLogger(this.getClass().getName());

    /**
     * @see HttpServlet#HttpServlet()
     */
    public AddressDataAutoCompleteServlet() {
        super();
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
     *      response)
     */
    protected void doGet(HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {
        String paramName = request.getParameter("paramName");
        String paramValue = request.getParameter("q");
        LOG.info(paramName);
        LOG.info(paramValue);

List list = new ArrayList();

        try {
            list = ServiceLocator.getAddressService()
                                 .searchAddressList(paramName, paramValue);
        } catch (ServiceException e) {
        LOG.error(e.getMessage(),e);
        }

        PrintWriter t_PW = response.getWriter();

        for (int i = 0; i < list.size(); i++) {
            String address = StrUtils.toTitleCase((String) list.get(i));

            if (paramName.equals("addressLine")) {
            AddressShow.showAddress(t_PW,address);
            } else if (paramName.equals("addressLine1")) {
            AddressShow.showAddress(t_PW,address);
            } else if (paramName.equals("addressLine2")) {
            AddressShow.showAddress(t_PW,address);
            } else if (paramName.equals("addressLine3")) {
            AddressShow.showAddress(t_PW,address);
            } else if (paramName.equals("addressCity")) {
            AddressShow.showAddress(t_PW,address);
            } else if (paramName.equals("addressPostCode")) {
            AddressShow.showAddress(t_PW,address);
            }
        }
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
     *      response)
     */
    protected void doPost(HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }
}

------
AddressShow.java

package com.intl.cigna.util;

import java.io.PrintWriter;

public class AddressShow
{
public static void showAddress(PrintWriter pw, String input)
{
pw.write(input + "\n");

}
}

posted @ 2012-06-07 22:39 Kavin 阅读(297) | 评论 (0) | 编辑收藏

Security Test: Unauthorized access to users data via Browser’s Cach

Unauthorized access to users data via Browser’s Cach

Solution:

1 <%  response.setHeader("Pragma", "no-cache");
2                 response.setHeader("Cache-Control", "no-store");
3                 response.setHeader("Expires", "0");
4                 response.setDateHeader("Expires", -1);
5 %>
6

posted @ 2011-06-09 17:53 Kavin 阅读(243) | 评论 (0) | 编辑收藏

SSH2中，直接获取SEQUENCE的NEXTVAL ，使用OracleSequenceMaxValueIncrementer

SSH2中，直接获取SEQUENCE的NEXTVAL

使用Spring的类 org.springframework.jdbc.support.incrementer.OracleSequenceMaxValueIncrementer

Spring配置文件：

1     <bean id="userDao" class="com.xx.dao.impl.UserDAOImpl">
2         <property name="sessionFactory" ref="sessionFactory" />
3         <property name="seqGenerator" ref="seqDispGenerator"></property>
5     </bean>
6
7     <bean id="seqDispGenerator" class="org.springframework.jdbc.support.incrementer.OracleSequenceMaxValueIncrementer">
8         <property name="dataSource" ref="dataSource"></property>
9         <property name="incrementerName" ><value>SEQ_DISP_ID</value></property>
10     </bean>

UserDAOImpl.java中引用：

private OracleSequenceMaxValueIncrementer seqGenerator;



    /**
     * @return the seqGenerator
     */
    public OracleSequenceMaxValueIncrementer getSeqGenerator() {
        return seqGenerator;
    }

    /**
     * @param seqGenerator the seqGenerator to set
     */
    public void setSeqGenerator(OracleSequenceMaxValueIncrementer seqGenerator) {
        this.seqGenerator = seqGenerator;
    }

UserDAOImpl.java中调用：

1 System.out.println("---------------------- this.seqGenerator().nextIntValue="+this.seqGenerator.nextIntValue());

posted @ 2011-05-06 14:24 Kavin 阅读(2684) | 评论 (0) | 编辑收藏

Hibernate ID generator 自定义主键生成器

/**
*
*/
package com.ge.hc.eapp.generator;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.hibernate.HibernateException;
import org.hibernate.MappingException;

import org.hibernate.dialect.Dialect;

import org.hibernate.engine.SessionImplementor;

import org.hibernate.id.Configurable;
import org.hibernate.id.IdentifierGenerator;
import org.hibernate.id.PersistentIdentifierGenerator;

import org.hibernate.type.Type;

import java.io.Serializable;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Properties;

/**
* @author Kavin
*
*/
public class DispNoGenerator implements IdentifierGenerator, Configurable {
    private static final Log log = LogFactory.getLog(DispNoGenerator.class);

    //存储最大值的数组的容量
    private static final int MAX_CAPACITY = 2000;

    /* 同步锁 */
    private static final Object lock = new Object();

    //存储表存储在数组中的索引值
    private static Map map = new HashMap();

    //最大值数组
    private static long[] seqs = new long[MAX_CAPACITY];

    //最大值数组已经使用的容量
    private static int lastIndex;

    //递增步长，默认加1
    private int step = 1;
    private String key;
    private String sql;
    private Connection connection;
    private Class returnClass;

    public Serializable generate(SessionImplementor session, Object object)
        throws HibernateException {
        // TODO Auto-generated method stub
        connection = session.connection();

//        long seq = -1;

        //找到索引值
//        int index = findIndex();

//        //把最大值加1
//        seqs[index] = seqs[index] + step;
//
//        seq = seqs[index];

        String strGenerateId = null;
        System.out.println("this.sql="+this.sql);
        try {
            long t_SeqNo = this.getSeqValue();

        System.out.println("t_SeqNo="+t_SeqNo);

        //得到流水号,是自己写的工具类生成的.形式为000x
        String seqStr = String.valueOf(t_SeqNo);
        //JspFormate.currentFormateORM(seq);
        //得到yymmdd,是自己写的方法工具类生成的yymmdd
        String preDate = "20110506";
        //得到hhmmss,是自己写的工具类获取的hhmmss
        //String preHour = JspFormate.dateFormateOnlyHHMMSSORM(new Date());
        String preHour = "1035";
        strGenerateId = preDate + preHour + seqStr;
        } catch (SQLException e) {
            log.error(e);
            e.printStackTrace();
        }

        return strGenerateId;
    }

    /**
     * 找到表中自动增长字段存储在数组中的索引值
     * @return 索引值
     */
    private int findIndex() {
        int index = 0;

        //首先中缓存中取出索引值
        Integer integer = (Integer) map.get(key);

        //如果没有找到就从数据库中读出最大值并进行cache
        if (null == integer) {
            //double check lock
            synchronized (lock) {
                integer = (Integer) map.get(key);

                if (null == integer) {
                    long maxvalue = 1;

                    try {
                        maxvalue = this.getSeqValue();
                    } catch (SQLException e) {
                        log.error(e);
                    }
                    maxvalue = new Long(0).longValue();

                    integer = new Integer(lastIndex++);
                    seqs[integer.intValue()] = maxvalue;
                    map.put(key, integer);
                }
            }
        }

        index = integer.intValue();

        return index;
    }

    public void configure(Type type, Properties params, Dialect d)
        throws MappingException {
        //     取出table参数
        String table = params.getProperty("table");

        if (table == null) {
            table = params.getProperty(PersistentIdentifierGenerator.TABLE);
        }

        //取出column参数
        String column = params.getProperty("column");

        if (column == null) {
            column = params.getProperty(PersistentIdentifierGenerator.PK);
        }

        //表的sehcma参数
        String schema = params.getProperty(PersistentIdentifierGenerator.SCHEMA);

        returnClass = type.getReturnedClass();

        //取出step参数
        String stepvalue = params.getProperty("step");

        if ((null != stepvalue) && !"".equals(stepvalue.trim())) {
            try {
                step = Integer.parseInt(stepvalue);
            } catch (Exception e) {
                log.error(e);
            }
        }

        //构造存储在Map中的索引值的key name
        key = table + "_$_" + column;

        //根据参数构造取最大值的SQL
        sql = "select SEQ_COMPANY_ID.nextval from dual";


    }

    /**
     * 取指定SEQUENCE的值，不存在记录返回0
     * @return Sequence最大值
     * @throws SQLException if sql error occurs.
     */
    private long getSeqValue() throws SQLException {
        long maxvalue = 0;

        PreparedStatement st = connection.prepareStatement(sql);
        System.out.println("============================================" + sql);
        ResultSet rs = null;

        try {
            rs = st.executeQuery();

            if (rs.next()) {
                maxvalue = rs.getLong(1);
            }

            sql = null;
        } finally {
            if (rs != null) {
                rs.close();
            }

            st.close();
        }

        return maxvalue;
    }

    /**
     * 取指定表中id字段的最大值，不存在记录返回0
     * @return 最大值
     * @throws SQLException if sql error occurs.
     */
    private long getMaxvalue() throws SQLException {
        long maxvalue = 0;

        PreparedStatement st = connection.prepareStatement(sql);
        System.out.println("============================================" + sql);
        ResultSet rs = null;

        try {
            rs = st.executeQuery();

            if (rs.next()) {
                maxvalue = rs.getLong(1);
            }

            sql = null;
        } finally {
            if (rs != null) {
                rs.close();
            }

            st.close();
        }

        return maxvalue;
    }
}

Hibernate 配置文件