Ajax框架之DWR学习（DWR 和Spring整合）-yellowcong

Spring和Dwr的整合,这个和Spring的整合方式，只是创建Bean的方式不一样，不是通过new 的方式，而是通过Spring注入，但是Dwr和SpringMvc的配置，就完全不一样了。

目录结构

环境搭建

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>yellowcong</groupId>    <artifactId>day11_30</artifactId>    <packaging>war</packaging>    <version>0.0.1-SNAPSHOT</version>    <name>day11_30 Maven Webapp</name>    <url>http://maven.apache.org</url>    <!-- 共用的配置说明，比如spring版本， 项目名称， jdk版本等 -->    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <spring.version>4.2.5.RELEASE</spring.version>    </properties>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.10</version>            <scope>test</scope>        </dependency>        <!-- Dwr框架 -->        <dependency>            <groupId>org.directwebremoting</groupId>            <artifactId>dwr</artifactId>            <version>3.0.2-RELEASE</version>        </dependency>        <!-- 必须也连带加上这个日志包，不然报错 -->        <dependency>            <groupId>commons-logging</groupId>            <artifactId>commons-logging</artifactId>            <version>1.0.4</version>        </dependency>        <!-- 文件上传 -->        <dependency>            <groupId>commons-fileupload</groupId>            <artifactId>commons-fileupload</artifactId>            <version>1.3.1</version>        </dependency>        <!-- Spring  BEGIN-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-beans</artifactId>            <version>${spring.version}</version>        </dependency>        <!-- 导入Spring的orm -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-orm</artifactId>            <version>${spring.version}</version>        </dependency>        <!-- Slf4j -->        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-api</artifactId>            <version>1.7.5</version>        </dependency>        <!-- 配置切面 -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aop</artifactId>            <version>${spring.version}</version>        </dependency>        <!---aspectj 面向切向 -->        <dependency>            <groupId>aspectj</groupId>            <artifactId>aspectjrt</artifactId>            <version>1.5.3</version>        </dependency>        <dependency>            <groupId>org.aspectj</groupId>            <artifactId>aspectjweaver</artifactId>            <version>1.8.5</version>        </dependency>        <!-- Spring需要的注解 -->        <dependency>            <groupId>javax.annotation</groupId>            <artifactId>javax.annotation-api</artifactId>            <version>1.2</version>        </dependency>        <!-- Spring 的测试类 -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <version>${spring.version}</version>        </dependency>        <!-- Spring  END-->        <!-- 配置Spring mvc -->        <dependency>          <groupId>org.springframework</groupId>          <artifactId>spring-webmvc</artifactId>          <version>${spring.version}</version>        </dependency>    </dependencies>    <build>        <finalName>day11_30</finalName>    </build></project>

web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns="http://java.sun.com/xml/ns/javaee"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    id="WebApp_ID" version="2.5">    <display-name>day1_27_dwr</display-name>    <!-- 设定字符编码 -->    <filter>        <filter-name>CharacterFilter</filter-name>        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>        <init-param>            <param-name>encoding</param-name>            <param-value>UTF-8</param-value>        </init-param>    </filter>    <filter-mapping>        <filter-name>CharacterFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>    <!-- spring的监听器，可以通过上下文来获取参数 -->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:spring.xml</param-value>    </context-param>    <!-- a)配置DwrListener 监听器-->    <listener>        <listener-class>org.directwebremoting.servlet.DwrListener</listener-class>    </listener>    <!-- b)配置DwrServlet  -->    <servlet>        <servlet-name>dwr-invoker</servlet-name>        <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>        <init-param>            <param-name>debug</param-name>            <param-value>true</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dwr-invoker</servlet-name>        <url-pattern>/dwr/*</url-pattern>    </servlet-mapping>    <welcome-file-list>        <welcome-file>index.jsp</welcome-file>    </welcome-file-list></web-app>

dwr.xml

创建的Bean的方式不一样了

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 3.0//EN" "http://getahead.org/dwr/dwr30.dtd"><dwr>  <allow>    <!-- 用户操作的Service -->    <create creator="spring" javascript="UserService">        <!-- 公布我们的 Java 文件 -->        <param name="beanName" value="userService" />        <exclude method="sayHello"/>        <exclude method="load"/>        <!-- 只可以访问 load方法， 其中 javascript 是我们在 js中调用的那个， 如果 配置了 include 和 exclude -->        <!--         <include method="sayHello"/>         -->        <!-- 除了load 方法，其他方法都可以用 -->        <exclude method="sayHello"/>    </create>    <!-- 创建 bean,通过bean来传值 -->    <convert converter="bean" match="com.yellowcong.entity.User" />    <!-- 配置错误处理， 添加这两个类就可以了 -->    <convert converter="exception" match="java.lang.Exception" />    <convert converter="bean" match="java.lang.StackTraceElement"/>  </allow></dwr>

Spring.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="    http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd    http://www.springframework.org/schema/context    http://www.springframework.org/schema/context/spring-context-4.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd    ">    <!-- 自动扫描(自动注入) -->    <context:annotation-config/>    <context:component-scan base-package="com.yellowcong.*"/></beans>

实体类User

package com.yellowcong.entity;public class User {    private String username;    private Integer age;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }}

UserService

服务类，需要加入注解，表示UserService

package com.yellowcong.service;import org.springframework.stereotype.Service;import com.yellowcong.entity.User;@Service("userService")public class UserService {    public String sayHello(String name){        System.out.println(name);        /*Browser.withPage("", new Runnable() {            public void run() {                // TODO Auto-generated method stub            }        });*/        return  "你好"+name;    }    public String addUser(User user){        System.out.println(user.getAge());        System.out.println(user.getUsername());        String username = user.getUsername();        if(username == null || "".equals(username == null)){            throw new RuntimeException("用户名不为空");        }        return "添加成功";    }}

界面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><script type="text/javascript" src="<%=request.getContextPath()%>/dwr/engine.js"></script><script type="text/javascript" src="<%=request.getContextPath()%>/dwr/interface/UserService.js"></script><!-- 调用我们的JAVA代码 --><script type="text/javascript">    function addUser(age,username){        var user ={age:age,username:username};        UserService.addUser(user,{            callback:function(data){                alert("处理结果\t"+data);            },            errorHandler:function(message,error){                //相当于一个Map 中获取key 和 value                  for(var key in error){                    alert(key+"__"+error[key]);                }            }        });     }</script></head><body><h2>异常处理</h2><input type="button" value="正常数据" onclick="addUser('21','yellowcong')" /><input type="button" value="异常数据" onclick="addUser()" /></body></html>

结果