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開發(fā)常用文件

posted @ 2011-08-11 23:05 mashiguang| 編輯收藏

hibernate DetachedCriteria的使用

public PageModel<CrmWarning> query(PageModel<CrmWarning> pageModel)
            throws Exception {
        Assert.notNull(pageModel);

        DetachedCriteria dc = DetachedCriteria.forClass(CrmWarning.class);

        /*
         * 添加查詢條件
         * 如:dc.add(Restrictions.like("key", "%"+pageModel.getCondition("key")+"%"));
         *
         * */
        if (null != pageModel.getCondition("warnLevel")) {
            dc.add(Restrictions.eq("warnLevel", pageModel.getCondition("warnLevel")));
        }
        if (StringUtils.isNotBlank((String)pageModel.getCondition("detail"))) {
            dc.add(Restrictions.like("detail", "%"+pageModel.getCondition("detail")+"%"));
        }
        if (StringUtils.isNotBlank((String)pageModel.getCondition("warnDate"))) {
            /*
             * warnDate格式是yyyy-MM-dd，這里改成查詢這一天的預(yù)警
             * Restrictions.sqlRestriction()允許寫原生sql的方式完成特殊需求，如下
             * */
            dc.add(Restrictions.sqlRestriction("to_char(time_start,'yyyy-MM-dd') = '" + pageModel.getCondition("warnDate") + "'"));
        }
        if (null != pageModel.getCondition("templateId")) {
            /*
             * 這里的templateId是模板的主鍵id,查詢時(shí)應(yīng)該轉(zhuǎn)換成模板對(duì)象
             * */
            CrmWarnTemplate warnTemplate = new CrmWarnTemplate();
            warnTemplate.setTemplateId((Long)pageModel.getCondition("templateId"));
            dc.add(Restrictions.eq("crmWarnTemplate", warnTemplate));
        }

        dc.addOrder(Order.asc("crmWarnTemplate"));
        dc.addOrder(Order.desc("timeStart"));

        pageModel.setDateList(warningDao.query(dc, pageModel.getFirstNote(), pageModel.getNumInPage()));
        pageModel.setTotal(warningDao.count(dc));

        return pageModel;
    }

posted @ 2011-08-11 22:50 mashiguang| 編輯收藏

hibernate手動(dòng)組裝pojo

package com.jl.dao.bookplatform.impl;

import java.util.List;

import org.hibernate.Hibernate;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.transform.Transformers;
import org.springframework.dao.DataAccessException;

import com.jl.dao.baseDao.GenericDao;
import com.jl.dao.bookplatform.ProductItemDao;
import com.jl.entity.bookplatform.CrmProduct;
import com.jl.entity.bookplatform.CrmProductItem;
import com.jl.entity.bookplatform.ProductItemConfig;

public class ProductItemDaoImpl extends GenericDao<CrmProductItem, Long> implements ProductItemDao {


    public List<ProductItemConfig> getProductItemConfigs(Long productId, Long planetypeId) throws DataAccessException{
        String sql = "select chi.charge_item_id \"chargeItemId\"," +
                " chi.charge_item \"chargeItem\"," +
                " chi.charge_unit \"chargeUnit\"," +
                " cpi.product_id \"productId\"," +
                " cpi.product_item_id \"productItemId\"," +
                " cpi.sale_planetype_id \"salePlanetypeId\"," +
                " cpi.inland_price \"inlandPrice\"," +
                " cpi.outland_price \"outlandPrice\"" +
                " from (select * from crm_charge_item chi2 where chi2.if_regular = 1) chi left join crm_product_item cpi" +
                " on cpi.charge_item_id = chi.charge_item_id " +
                " and cpi.product_id = ?" +
                " and cpi.sale_planetype_id = ?" +
                " order by chi.charge_item_id";

        Session session = getSession();
        Query query = session.createSQLQuery(sql)
            .addScalar("chargeItemId", Hibernate.LONG)
            .addScalar("chargeItem",Hibernate.STRING)
            .addScalar("chargeUnit",Hibernate.STRING)
            .addScalar("productId",Hibernate.LONG)
            .addScalar("productItemId",Hibernate.LONG)
            .addScalar("salePlanetypeId",Hibernate.LONG)
            .addScalar("inlandPrice",Hibernate.DOUBLE)
            .addScalar("outlandPrice",Hibernate.DOUBLE)
            .setResultTransformer(Transformers.aliasToBean(ProductItemConfig.class))
            .setParameter(0, productId)
            .setParameter(1, planetypeId);

        List<ProductItemConfig> configs = query.list();

        return configs;
    }

    public List<CrmProductItem> getProductItem(CrmProduct product) throws DataAccessException {

        String hql = "from CrmProductItem cpi where cpi.crmProduct = ?";
        Session session = getSession();
        Query query = session.createSQLQuery(hql).setParameter(0, product);

        List<CrmProductItem> items = query.list();
        return items;
    }

    public void copy(Long productId_dest,Long productId_orig,String createMan) throws DataAccessException {
        String sql = "insert into crm_product_item " +
                " select hibernate_sequence.nextval," +
                " ?," +
                " cpi.charge_item_id," +
                " cpi.sale_planetype_id," +
                " cpi.inland_price," +
                " cpi.outland_price," +
                " ?," +
                " sysdate" +
                " from crm_product_item cpi" +
                " where cpi.product_id = ?";

        Session session = getSession();
        Query sqlQuery = session.createSQLQuery(sql)
                        .setParameter(0, productId_dest)
                        .setParameter(1, createMan)
                        .setParameter(2, productId_orig);
        sqlQuery.executeUpdate();
    }


}

posted @ 2011-08-11 22:25 mashiguang| 編輯收藏

tomcat eclipse遠(yuǎn)程調(diào)試

1，配置tomcat啟動(dòng)參數(shù)
直接在%tomcat_home%\bin下建立tomcat_debug.bat文件，內(nèi)容如下：

cd %CATALINE_HOME%/bin
set JPDA_ADDRESS=8787
set JPDA_TRANSPORT=dt_socket
set CATALINA_OPTS=-server -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8787
startup

需要遠(yuǎn)程調(diào)試時(shí)從tomcat_debug.bat啟動(dòng)。

2，eclipse調(diào)試
選擇菜單"Run>Debug..."，彈出窗口里右鍵點(diǎn)擊"Remote Java Application"，選擇"New"，如圖：

點(diǎn)擊"Debug"按鈕，開始遠(yuǎn)程調(diào)試，當(dāng)程序運(yùn)行到斷點(diǎn)時(shí)，Eclipse會(huì)捕獲到。

有關(guān)普通java app的遠(yuǎn)程調(diào)試可以參考http://blog.chenlb.com/2010/07/eclipse-remoting-debug-java-app.html

posted @ 2011-02-26 17:39 mashiguang 閱讀(454) | 評(píng)論 (2) | 編輯收藏

jQuery validate 日期比較自定義驗(yàn)證方法

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
  <TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
  <script type="text/javascript" src="jquery-1.4.2.js"></script>
  <script type="text/javascript" src="jquery.validate.js"></script>
  <SCRIPT LANGUAGE="JavaScript">
  
  </SCRIPT>
</HEAD>

<BODY>
<form id="form1" name="form1" method="post" action="demo.html">
   <p>timeStart:
     <input name="timeStart" type="text" id="timeStart" value="2011-02-17 10:00:00"> yyyy-MM-dd HH:mm:ss
   </p>
   <p>timeEnd:
     <input name="timeEnd" type="text" id="timeEnd" value="2011-02-17 9:00:00"> yyyy-MM-dd HH:mm:ss
   </p>
   <p>
     <input type="submit" name="Submit" value="提交">
   </p>
</form>

</BODY>
</HTML>

posted @ 2011-02-17 10:34 mashiguang 閱讀(11934) | 評(píng)論 (9) | 編輯收藏

關(guān)于Oracle一個(gè)漢字代表幾個(gè)字節(jié)的問(wèn)題（轉(zhuǎn)）

在Oracle定義變量時(shí)，常有VARCHAR2 (3 Char)或者VARCHAR2 (10 Byte)的數(shù)據(jù)類型，那么3char或者10Byte到底代表幾個(gè)漢字，幾個(gè)字符呢，上次外公司一同事討論這個(gè)問(wèn)題，一下沒(méi)給解釋清楚，所以下來(lái)以后整理如下：

總結(jié)：
當(dāng)NLS_CHARACTERSET=AL32UTF8時(shí)（）
NLS_LENGTH_SEMANTICS=BYTE時(shí)，一個(gè)漢字代表三個(gè)字節(jié)
NLS_LENGTH_SEMANTICS=CHAR時(shí)，一個(gè)漢字代表一個(gè)字節(jié)
當(dāng)NLS_CHARACTERSET=US7ASCII時(shí)（字符集為單字節(jié)）
NLS_LENGTH_SEMANTICS=BYTE時(shí)，一個(gè)漢字代表兩個(gè)字節(jié)
NLS_LENGTH_SEMANTICS=CHAR時(shí)，一個(gè)漢字代表兩個(gè)字節(jié)

現(xiàn)象:
select * from nls_database_parameters;
…. …………..
NLS_CHARACTERSET AL32UTF8

…..

NLS_LENGTH_SEMANTICS BYTE

….

NLS_NCHAR_CHARACTERSET AL16UTF16

NLS_RDBMS_VERSION 10.2.0.4.0

SQL> alter session set nls_length_semantics='BYTE';

SQL> create table nls_byte(c1 varchar2(7));

SQL> insert into nls_byte values('測(cè)試機(jī)');

insert into nls_byte values('測(cè)試機(jī)')

ORA-12899: 列 "SYS"."NLS_BYTE"."C1" 的值太大 (實(shí)際值: 9, 最大值: 7)

SQL> insert into nls_byte values('測(cè)試a');

1 row inserted

SQL> select table_name,column_name,t.DATA_TYPE,t.DATA_LENGTH,t.CHAR_USED from user_tab_columns t where table_name='NLS_BYTE';

TABLE_NAME COLU DATA_TYP DATA_LENGTH CHAR_USED

---------- ---- -------- ----------- ---------

NLS_BYTE C1 VARCHAR2 7 B

NLS_LENGTH_SEMANTICS allows you to specify the length of a column datatype in terms of CHARacters rather than in terms of BYTEs. Typically this is when using an AL32UTF8 or other varying width NLS_CHARACTERSET database where one character is not always one byte. While using CHAR semantics has as such no added value in a 7/8 bit characterset it's fully supported so any application code / table setup using CHAR can also be used in a 7/8bit characterset like US7ASCII/WE8MSWIN1252.
This parameter is a 9i (and up) feature and is not available in older releases

翻譯過(guò)來(lái)就是:這個(gè)參數(shù)允許將列的數(shù)據(jù)單位設(shè)為字符而不是byte.這個(gè)問(wèn)題會(huì)在字符集設(shè)為UTF8的時(shí)候出現(xiàn). 此參數(shù)在9i以上版本有效.

NLS_LENGTH_SEMANTICS 設(shè)置.

1. NLS_DATABASE_PARAMETERS中的值是在數(shù)據(jù)庫(kù)創(chuàng)建的時(shí)候確定的,一般都為BYTE

2. 此參數(shù)可以以 “ALTER SYSTEM SET NLS_LENGTH_SEMANTICS=CHAR scope=both”方式修改,但是需要重啟數(shù)據(jù)庫(kù)才能生效.

3. 也可用” ALTER SESSION SET NLS_LENGTH_SEMANTICS=CHAR”使對(duì)當(dāng)前session生效.

4. 此參數(shù)可以在10G以上版本中,在環(huán)境變量或注冊(cè)表中設(shè)置(注意需要大寫),設(shè)定后從當(dāng)前客戶端啟動(dòng)的所有會(huì)話都采用新的取值.

5. 修改后只對(duì)新建的列生效,對(duì)于已有的列沒(méi)有作用

6. 新建或升級(jí)DB時(shí)用BYTE,否則XDB或dba_tables會(huì)出現(xiàn)問(wèn)題.

7. NLS_LENGTH_SEMANTICS對(duì)sys用戶下的對(duì)象無(wú)效.

8. 如果對(duì)于7/8bit的字符集,設(shè)為byte/char意義不大,因?yàn)闊o(wú)論是char和byte都對(duì)應(yīng)一個(gè)byte.

測(cè)試:

一.在當(dāng)前session中修改此參數(shù)

SQL> alter session set nls_length_semantics='char';

Session altered

SQL> create table nls_char(c1 varchar2(7),c2 varchar2(7));

Table created

SQL> desc nls_char

Name Type Nullable Default Comments

---- ----------- -------- ------- --------

C1 VARCHAR2(7) Y

C2 VARCHAR2(7) Y

SQL> insert into nls_char values('測(cè)試機(jī)','測(cè)試測(cè)試測(cè)試');

1 row inserted

如果對(duì)于alter system,效果是一樣的

二.對(duì)于已經(jīng)存在的表,

SQL> desc nls_byte

Name Type Nullable Default Comments

---- ---------------- -------- ------- --------

C1 VARCHAR2(7 BYTE) Y

SQL> alter table nls_byte modify c1 varchar2(7 char);

Table altered

SQL> desc nls_byte

Name Type Nullable Default Comments

---- ----------- -------- ------- --------

C1 VARCHAR2(7) Y

SQL> insert into nls_byte values('測(cè)試機(jī)');

1 row inserted

1. exp/imp : 不能直接導(dǎo)入,因?yàn)闀?huì)采用source table的建表方式在target db里建表,即使目標(biāo)庫(kù)設(shè)的值為char.

*可以預(yù)先在目標(biāo)庫(kù)中以char方式建表

*然后導(dǎo)入,指定參數(shù)ignore=y

2. Alter table

alter table "<owner>"."<table>" modify "<column>" char (10 char);

創(chuàng)建腳本,修改列設(shè)定.

注:

Bug-3611750, ora-01450 online rebuild of index fails, 可以在重建索引前指定byte, 10.2.0.5以上已經(jīng)修復(fù)

Bug 1488174 UNICODE: ALTER SYSTEM SET NLS_LENGTH_SEMANTICS DOESN'T
TAKE EFFECT, 用此語(yǔ)句修改后,實(shí)際上不起作用,需要重啟才能生效, 但是如果用alter session方式即時(shí)生效,不用重啟.

進(jìn)一步測(cè)試,在另一個(gè)字符集設(shè)為us7ascii的DB設(shè)置此參數(shù)

SQL> select * from nls_database_parameters

6 NLS_CHARACTERSET US7ASCII

SQL> alter session set nls_length_semantics=byte;

Session altered.

SQL> create table nls_byte(c1 varchar2(7));

Table created.

SQL> insert into nls_byte values('測(cè)試測(cè)試');

insert into nls_byte values('測(cè)試測(cè)試')

ERROR at line 1:

ORA-12899: value too large for column "TEA"."NLS_BYTE"."C1" (actual: 8,

maximum: 7)

SQL> desc nls_byte

Name Null? Type

-------------------------------

C1 VARCHAR2(7)

SQL> alter session set nls_length_semantics=char;

Session altered.

SQL> create table nls_char(c1 varchar2(7));

Table created.

SQL> insert into nls_char values('測(cè)試測(cè)試');

insert into nls_char values('測(cè)試測(cè)試')

ERROR at line 1:

ORA-12899: value too large for column "TEA"."NLS_CHAR"."C1" (actual: 8,

maximum: 7)

SQL> desc nls_char

Name Null? Type

----------------------------------------- -------- -------------------

C1 VARCHAR2(7)

可以看出,在字符集為單字節(jié)的情況下,無(wú)論取何值,漢字都是以二個(gè)字節(jié)的方式存在的.

本文轉(zhuǎn)自http://www.wudeyao.com/post-69.html

posted @ 2011-01-21 12:49 mashiguang 閱讀(1414) | 評(píng)論 (0) | 編輯收藏

java.util.ConcurrentModificationException

在foreach調(diào)用remove可能會(huì)引發(fā)ConcurrentModificationException。
如:
for(Object obj : list){
.remove(obj);
}

最好像下面這樣寫:
for (Iterator it = list.iterator(); it.hasNext();) {
......
it.remove();
}

(添加20160420)
如果foreach的同時(shí)需要add element，就不能使用iterator了，最好重新啟用一個(gè)新的list暫存新的集合元素。

posted @ 2010-12-08 09:47 mashiguang 閱讀(430) | 評(píng)論 (0) | 編輯收藏

jquery.boxy.js擴(kuò)展 (0.1.40)

摘要: 這個(gè)是ie6的bug，并非boxy的問(wèn)題。在ie6下，select元素的zindex最大，select元素會(huì)透過(guò)boxy的彈出層顯示在其上面。這里用一個(gè)iframe擋住boxy彈出層下的select，使用時(shí)只要將useIframe置為true即可，源碼如下: (jquery.boxy.js并不好用，很多jquery的彈出層插件都解決了ie6的這個(gè)問(wèn)題) /** *&n... 閱讀全文

posted @ 2010-09-14 17:30 mashiguang 閱讀(4434) | 評(píng)論 (17) | 編輯收藏

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