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配置异常转换器:
dwr.xml:
<!-- 异常转换 -->
<convert match="java.lang.Exception" converter="exception"/>
<convert match="java.lang.StackTraceElement" converter="bean"/>
UserService:
package com.demo.service;
import java.util.ArrayList;
import java.util.List;
import com.demo.model.User;
public class UserService {
public static final String SUCCESS="success";
public String add(User user){
System.out.println(user);
return SUCCESS;
}
public String deleted(int userId){
throw new RuntimeException("删除出错了...");
}
public String update(User user){
System.out.println("update:"+user);
return SUCCESS;
}
public List<User> list(){
List<User> users=new ArrayList<User>();
users.add(new User(1,"aa"));
users.add(new User(2,"bb"));
users.add(new User(3,"cc"));
return users;
}
}
delete.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>user delete</title>
<script type="text/javascript" src="<%=request.getContextPath()%>/dwr/engine.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/dwr/util.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/dwr/interface/UserService.js"></script>
<script type="text/javascript">
UserService.deleted(11,{
//回调函数
callback:callBack,//异常处理
errorHandler:function(msg) {
alert(msg);
}
});
function callBack(result){
alert(result);
}
</script>
</head>
<body>
</body>
</html>
结果:
（编辑：李大同）
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