archie2010的专栏

OgnlAction.javapackage com.kaishengit.web;import java.util.HashMap;import java.util.List;import java.util.Map;import com.kaishengit.dao.UserDao;import com.kaishengit.vo.User;import com.opensymphony.xwork2.ActionContext;import com.opensymp

<br />Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.compass.spring.device.SpringSyncTransactionGpsDeviceWrapper]<br /> <br />导入的compass的jar包版本问题，compass-2.2中没有org.compass.spring.device.SpringSyncTransac

<br />Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.compass.spring.device.SpringSyncTransactionGpsDeviceWrapper]<br /> <br />导入的compass的jar包版本问题，compass-2.2中没有org.compass.spring.device.SpringSyncTransac

<br />转码<br />第一种方式：<br />String cityName=java.net.URLDecoder.decode(processedGeos[i], "UTF-8");<br /> <br />第二种方式：<br />String cityName=new String(processedGeos[i].getBytes("ISO-8859-1"),"UTF-8");

<br />配置文件<br />sql-map-config.xml<br /> <br /><?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd"><sqlMapConfig> <settings cach

<br />myEclipse/plugins/com.genuitec.eclipse.j2eedt.core_8.5.0.me201003231033/data/libraryset/EE_5/javaee.jar<br /> <br />去除其中的mail和activation目录<br /> <br />再另加入从Web上下载的mail.jar 和 activation.jar<br /> <br /> 

<br />User.xml<br /><?xml version="1.0" encoding="UTF-8"?><!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN" "http://www.ibatis.com/dtd/sql-map-2.dtd"><sqlMap namespace="User"><resultMap id="result" class="com.tq365.vo.User"> <result

<br />1、切入点表达式的格式：execution([可见性] 返回类型 [声明类型].方法名(参数) [异常])<br /> <br />2、切入点表达式通配符：<br />      *：匹配所有字符<br />      ..：一般用于匹配多个包，多个参数<br />      +：表示类及其子类<br /> <br />3、切入点表达式支持逻辑运算符：&&、||、!<br /> <br />4、切入点表达式关键词：<br />      1）execution：用于匹配子表达式。

<br /> <!-- 插入操作日志 --> <insert id="saveSystemLog"> insert into systemLog( uid, username, operateTime, operateDes, operateArgs, ip )values( #uid#, #username#, #operateTime#, #operateD

<br />applicationContext.xml<br /><?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/

<br />泛型接口GenericDao<br />public interface GenericDao <T, ID extends Serializable>{ public T findById(ID id); T findById(ID id, boolean lock); public T load(ID id); List findAll(); List findByExample(T exampl

<br />项目发布出错，<br />报Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file<br />错误<br /> <br />当前服务器使用的JDK版本与项目编译的版本不同，需重新编译

1、限制泛型的可用类型　　由于没有限制class GenericsFoo类型持有者T的范围，实际上这里的限定类型相当于Object，这和“Object泛型”实质是一样的。限制比如我们要限制T为集合接口类型。只需要这么做：　　class GenericsFoo，这样类中的泛型T只能是Collection接口的实现类，传入非Collection接口编译会出错。　　注意：这里的限定使用关键字 extends，后面可以是类也可以是接口。但这里的extends已经不是继承的含义了，应该理解为T

<br />compass项目启动报错<br />Caused by: org.compass.core.config.ConfigurationException: Schema system id [http://www.compass-project.org/schema/compass-core-config-2.0.xsd]  <br />not found at [/org/compass/core/compass-core-config-2.0.xsd],<br />  ple

<br />当 IDENTITY_INSERT 设置为 OFF 时，不能为表 'adgroup_info' 中的标识列插入显式值。<br /> <br />Ibatis中不能向自增长的表字段指定值<br /> <br /> 

hibernate.cfg.xml com.mysql.jdbc.Driver jdbc:mysql:///crud

<br />package com.kaisheng.web;import java.util.Map;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;import com.opensymphony.xwork2.ModelDriven;import com.opensymphony.xwork2.Preparable;public abst

<br />  <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springf

映射文件：ShoeModel.hbm.xml

<br />package com.kaishengit.web;import java.io.IOException;import java.io.PrintWriter;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;impo

<br />package com.kaishengit.web;import java.io.IOException;import java.io.PrintWriter;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;impo

<br /><br /> <br />2010-9-17 6:19:02 org.apache.catalina.core.ApplicationDispatcher invoke<br />严重: Servlet.service() for servlet jsp threw exception<br />org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.kaishengit.entit

<br />java.lang.ClassNotFoundException: net.sf.ezmorph.Morpher <br />Could not initialize class  net.sf.json.util.JSONUtils <br /><br />出现以上等异常，可能是使用Json缺少以下几个包中的一个： <br /><br />ezmorph-1.0.6.jar <br />commons-lang 2.4 <br />commons-beanutils 1.7

项目中使用了AJAX技术，JAR包为：json-lib.jar， 在开发过程中遇到了一个JSON-LIB和Hibernate有关的问题：net.sf.json.JSONException: There is a cycle in the hierarchy! at net.sf.json.util.CycleDetectionStrategy$StrictCycleDetectionStrategy.handleRepeatedReferenceAsObject(CycleDetectionStrate

<br /><mce:script type="text/javascript" src="scripts/jquery.js" mce_src="scripts/jquery.js"></mce:script><mce:script type="text/javascript" src="scripts/json.js" mce_src="scripts/json.js"></mce:script><script type="text/javascript"> $(docu

<br />java  code<br />import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;import java.lang.reflect.Proxy;public class AopTest { public s

<br />BaseDao.java<br />package com.tq365.samples.ibatis.dao;import javax.annotation.PostConstruct;import javax.annotation.Resource;import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;import com.ibatis.sqlmap.client.SqlMapClient;

<br /> <br />JasperReport<br />2.1      简介<br />JasperReport 是产生报表的核心部分，首先要先有个xml文件，然后根据jasperreports.dtd编译成jasper文件（以.jasper结尾）,我们真正要使用的是编译以后的.jasper文件。xml文件的内容包括对报表样式的定义，数据来源，参数等等，它可以支持的输出格式：PDF,HTML,XML,XLS,CVS等。<br />在没有iReport之前，需要花费大量的时间去熟悉Ja