Dwr Exception Handling

Dwr Exception Handling

Configuration exception converter:

Dwr. xml:

<! -- Exception Conversion --> <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 ("deletion error... ");} public String update (User 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"> 
 

 

 

Result:

I want to teach you a problem about SSH + dwr: dwr cannot report error after adding transaction processing in spring. I do not know why.

Dwr Configuration:
<Create creator = "spring" javascript = "quest" scope = "application">
<Param name = "beanName" value = "questService"/>
<Include method = "getTaskSql"/>
<Include method = "getTaskRows"/>
<Include method = "getTaskResult"/>

Line 19 character 2 error dwr engine undefined how to solve?

Is your dwr configured in web. xml similar to the following?
<Servlet>
<Servlet-name> dwr-invoker </servlet-name>
<Servlet-class> uk. ltd. getahead. dwr. DWRServlet </servlet-class>
<Init-param>
<Param-name> debug </param-name>
<Param-value> true </param-value>
</Init-param>
</Servlet>

<Servlet-mapping>
<Servlet-name> dwr-invoker </servlet-name>
<! -- Used to intercept localhost: 8080/dwr -->
<Url-pattern>/dwr/* </url-pattern>
</Servlet-mapping>
<Servlet>
<Servlet-name> dwr-invoker </servlet-name>
<Servlet-class> uk. ltd. getahead. dwr. DWRServlet </servlet-class>
<Init-param>
<Param-name> debug </param-name>
<Param-value> true </param-value>
</Init-param>
</Servlet>

<Servlet-mapping>
<Servlet-name> dwr-invoker </servlet-name>
<! -- Used to intercept localhost: 8080/dwr -->
<Url-pattern>/dwr/* </url-pattern>
</Servlet-mapping>

Then there is no dwr. xml configuration file under the WEB-INF directory
<? Xml version = "1.0" encoding = "UTF-8"?>
<! DOCTYPE dwr PUBLIC
"-// GetA... the remaining full text>