dwr轻松上路（七)

七、如何封装异常

•        java 端：创建一个异常类

public class FunkyException extends Exception{

 public  FunkyException(String message,Date when)
 {
  this.message = message;
  this.when = when;
 }
 public String getMessage()
 {
  return message;
 }
 public Date getWhen()
 {
  return when;
 }
 private String message;
 private Date when;
}

远程方法抛异常：public String getData() throws FunkyException{
     Date when = new Date();
     throw new FunkyException("message", when);
     // FunkyException has a getWhen() method
   }

• js端代码：

function eh(msg, ex) {

  alert(msg + ", date=" + ex.when);
}
function exec()
{
DWREngine.setErrorHandler(eh);

• SimpleText.getData(function(data) { alert(data); });
  }
  dwr.xml配置：

<dwr></dwr><dwr>

<allow>

<convert converter="bean" match="com.zb.webcontrol.simpletext.FunkyException "/>

</allow>

</dwr>
<allow></allow>
<create javascript="SimpleText" creator="new"></create>


<convert match="com.zb.webcontrol.simpletext.FunkyException" converter="bean"></convert>测试结果：弹出对话框

• 遗留问题：后台报 No converter found for 'java.lang.StackTraceElement'异常,如何配置该转换器，有知道的请回复？不甚感激

评论

1 楼 kongxx 2009-02-13  

再添加一个异常转换器
<convert match="java.lang.StackTraceElement" converter="bean"/>