bboss session共享时序列化存储jasperreports报表对象JasperPrint方法
bboss session共享组件使用方法介绍
由于JasperPrint对象有点特殊，序列化存储到session时，必须采用java自带的序列化机来序列化和还原JasperPrint对象，否则bboss序列化机制无法实现对原始JasperPrint对象的序列化。具体的设置JasperPrint对象到共享session中的方法如下：
下文中提供从共享session中存储和读取jasperprint对象的另外一种更加友好的解决方案：
bboss自定义类对象序列化机制介绍
由于JasperPrint对象有点特殊，序列化存储到session时，必须采用java自带的序列化机来序列化和还原JasperPrint对象，否则bboss序列化机制无法实现对原始JasperPrint对象的序列化。具体的设置JasperPrint对象到共享session中的方法如下：
public static void toSession(HttpServletRequest request,String key,JasperPrint jasperPrint) throws IOException
{
java.io.ByteArrayOutputStream out = null;
java.io.ObjectOutputStream output = null;
try
{
out = new ByteArrayOutputStream();
output = new java.io.ObjectOutputStream(out);
output.writeObject(jasperPrint);
output.flush();
request.getSession().setAttribute(key, out.toByteArray());
}
finally
{
try {
if(out != null)
{
out.close();
out = null;
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
if(output != null)
{
output.close();
output = null;
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public static JasperPrint getJasperPrint(HttpServletRequest request,String key)
{
JasperPrint jasperPrint = null;
java.io.ObjectInputStream output = null;
java.io.ByteArrayInputStream intput = null;
try
{
byte[] b = (byte[])request.getSession().getAttribute(key);
intput = new ByteArrayInputStream(b);
output = new java.io.ObjectInputStream(intput);
jasperPrint = (JasperPrint)output.readObject();
return jasperPrint;
}
catch(Exception e)
{
e.printStackTrace();
return null;
}
finally
{
try {
if(intput != null)
{
intput.close();
intput = null;
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
if(output != null)
{
output.close();
output = null;
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
下文中提供从共享session中存储和读取jasperprint对象的另外一种更加友好的解决方案：
bboss自定义类对象序列化机制介绍
