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:
delete.jsppackage 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; } }
结果:<%@ 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>
