SpringMVC整合DWR

版本信息：

Spring3.1.2

Dwr3.0.M1

web.xml配置信息

<!-- spring mvc --> <servlet>        <servlet-name>dispatcherServlet</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:spring-mvc-servlet.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dispatcherServlet</servlet-name>        <url-pattern>*.do</url-pattern>    </servlet-mapping><servlet-mapping>  <servlet-name>dispatcherServlet</servlet-name>  <url-pattern>/dwr/*</url-pattern></servlet-mapping>

spring-mvc-servlet.xml中配置信息

<dwr:configuration><dwr:convert type="bean" class="org.mvn.dwr.model.User"></dwr:convert></dwr:configuration><dwr:url-mapping/>    <dwr:controller id="dwrController" debug="true"/>    <bean class="org.mvn.dwr.dao.impl.UserDaoImpl" id="userDaoImpl"></bean><bean class="org.mvn.dwr.service.impl.UserServiceImpl" id="userServiceImpl"><property name="userDao" ref="userDaoImpl"></property><dwr:remote javascript="dwrUserService"><dwr:include method="checkUsernameIsExists"/><dwr:include method="getUsername"/><dwr:include method="findUserById"/><dwr:include method="listAll"/></dwr:remote></bean>

User.java

package org.mvn.dwr.model;public class User {private long id;private String username;private String birthday;private String address;public User() {}public User(long id, String username, String birthday, String address) {super();this.id = id;this.username = username;this.birthday = birthday;this.address = address;}public long getId() {return id;}public void setId(long id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getBirthday() {return birthday;}public void setBirthday(String birthday) {this.birthday = birthday;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}}

UserDao.java

package org.mvn.dwr.dao;import java.util.List;import org.mvn.dwr.model.User;public interface UserDao {boolean checkUsernameIsExists(String username);String getUsername(long id);User findUserById(long id);List<User> listAll();}

UserDaoImpl.java

package org.mvn.dwr.dao.impl;import java.util.ArrayList;import java.util.List;import org.mvn.dwr.dao.UserDao;import org.mvn.dwr.model.User;public class UserDaoImpl implements UserDao{@Overridepublic boolean checkUsernameIsExists(String username) {return true;}@Overridepublic String getUsername(long id) {return "dwrservice";}@Overridepublic User findUserById(long id) {return new User(1,"admin","1987-02-03","陕西西安");}public List<User> listAll(){List<User> lists=new ArrayList<User>();for (int i = 1; i <= 100; i++) {lists.add(new User(i,"admin"+i,"1987-02-03","陕西西安"+i));}return lists;}}

UserService.java

package org.mvn.dwr.service;import java.util.List;import org.mvn.dwr.model.User;public interface UserService {boolean checkUsernameIsExists(String username);String getUsername(long id);User findUserById(long id);List<User> listAll();}

UserServiceImpl.java

package org.mvn.dwr.service.impl;import java.util.List;import org.mvn.dwr.dao.UserDao;import org.mvn.dwr.model.User;import org.mvn.dwr.service.UserService;public class UserServiceImpl implements UserService {private UserDao userDao;public void setUserDao(UserDao userDao) {this.userDao = userDao;}@Overridepublic boolean checkUsernameIsExists(String username) {return userDao.checkUsernameIsExists(username);}@Overridepublic String getUsername(long id) {return userDao.getUsername(id);}@Overridepublic User findUserById(long id) {return userDao.findUserById(id);}@Overridepublic List<User> listAll() {return userDao.listAll();}}

在spring-mvc-servlet.xml中增加

xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"

http://www.directwebremoting.org/schema/spring-dwr

http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd

<dwr:configuration><dwr:convert type="bean" class="org.mvn.dwr.model.User"></dwr:convert></dwr:configuration><dwr:url-mapping/><dwr:controller id="dwrController" debug="true"/>    <bean class="org.mvn.dwr.dao.impl.UserDaoImpl" id="userDaoImpl"></bean><bean class="org.mvn.dwr.service.impl.UserServiceImpl" id="userServiceImpl"><property name="userDao" ref="userDaoImpl"></property><dwr:remote javascript="dwrUserService"><dwr:include method="checkUsernameIsExists"/><dwr:include method="getUsername"/><dwr:include method="findUserById"/><dwr:include method="listAll"/></dwr:remote></bean>

<dwr:configuration>
<dwr:convert type="bean" class="org.mvn.dwr.model.User"></dwr:convert>
</dwr:configuration>

表示把User进行转换

<dwr:url-mapping/>
<dwr:controller id="dwrController" debug="true"/>

两个不能少

<dwr:remote javascript="dwrUserService">
<dwr:include method="checkUsernameIsExists"/>
<dwr:include method="getUsername"/>
<dwr:include method="findUserById"/>
<dwr:include method="listAll"/>
</dwr:remote>

dwrUserService为指定dwr生成js文件的名称

dwr:include表示那些方法需要开启远程调用

最后别忘了配置

<bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"><property name="alwaysUseFullPath" value="true"></property><property name="mappings"><props><prop key="/dwr/*">dwrController</prop><prop key="/interface/**">dwrController</prop></props></property></bean>

最后在浏览器访问http://localhost:8080/webapp/dwr/

这里有一个奇怪的问题

就是上面的dao和service用注解注入的时候会报千奇百怪的异常信息。也不知道是什么原因，暂且不去管了，在整个整合过程中换了无数个dwr的jar包。可以说dwr的版本真的很坑爹。官方3.0系列至今没有发行正式版的版本，所以难免会出现千奇百怪的问题，有知道的朋友，可以告诉我一声，先谢过了。。。。