编码过滤器+简单的批量添加（hibernate）

在web.xml中，添加

<!--过滤器-->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>com.sb.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>

对应的servlet代码：

packagecom.sb;

importjava.io.IOException;

importjavax.servlet.Filter;
importjavax.servlet.FilterChain;
importjavax.servlet.FilterConfig;
importjavax.servlet.ServletException;
importjavax.servlet.ServletRequest;
importjavax.servlet.ServletResponse;

/**
*字符编码过滤器
*@authorcyy
*/
publicclassCharacterEncodingFilterimplementsFilter{

protectedStringencoding=null;
protectedFilterConfigfilterConfig=null;

publicvoidinit(FilterConfigfilterConfig)throwsServletException{
this.filterConfig=filterConfig;
this.encoding=filterConfig.getInitParameter("encoding");
}

publicvoiddoFilter(ServletRequestrequest,ServletResponseresponse,FilterChainchain)throwsIOException,ServletException{
if(encoding!=null){
request.setCharacterEncoding(encoding);
response.setContentType("text/html;charset="+encoding);
}
chain.doFilter(request,response);
}

publicvoiddestroy(){
this.encoding=null;
this.filterConfig=null;
}
}

批量添加：

publicvoidsaveMedicines(List<Medicine>ms){
Sessionsession=null;
if(ms!=null&&ms.size()>0){
try{
session=HibernateUtil.getSession();//获取Session
session.beginTransaction();//开启事物
Medicinemedicine=null;//创建药品对象
//循环获取药品对象
for(inti=0;i<ms.size();i++){
medicine=(Medicine)ms.get(i);//获取药品
session.save(medicine);//保存药品对象
//批插入的对象立即写入数据库并释放内存
if(i%10==0){
session.flush(); //其他的，也没什么了。
session.clear();
}
}
session.getTransaction().commit();//提交事物
}catch(Exceptione){
e.printStackTrace();//打印错误信息
session.getTransaction().rollback();//出错将回滚事物
}finally{
HibernateUtil.closeSession(session);//关闭Session
}
}
}