《SSM框架搭建》三.整合spring web

2022-11-04 16:48:06

感谢学习http://blog.csdn.net/zhshulin/article/details/37956105#，还是修改了spring到最新的版本和接口开发示例

根据前一篇日志，已经有了mybatis3+spring4的maven项目，在这基础上继续整合

1，首先下载需要的jar包，这里使用了全局参数，并添加以下jar包，（这里还抛出过异常找不到fasterxml/jackson/core/JsonProcessingException，在maven库也找了蛮久）

<properties>

        <!-- spring版本号 -->

        <spring.version>4.3.2.RELEASE</spring.version>

        <!-- mybatis版本号 -->

        <mybatis.version>3.2.8</mybatis.version>

        <!-- log4j日志文件管理包版本 -->

        <slf4j.version>1.7.7</slf4j.version>

        <log4j.version>1.2.17</log4j.version>

    </properties        <!-- 添加整合spring web需要的包 -->

    <!-- 添加整合spring web需要的包 -->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-oxm</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-aop</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context-support</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <!-- 格式化对象，方便输出日志 -->

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.1.41</version>

        </dependency>

        <!-- 日志文件管理包 -->

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-api</artifactId>

            <version>${slf4j.version}</version>

        </dependency>

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-log4j12</artifactId>

            <version>${slf4j.version}</version>

        </dependency>

        <!-- log end -->

        <!-- 引入JSON -->

        <dependency>

            <groupId>org.codehaus.jackson</groupId>

            <artifactId>jackson-mapper-asl</artifactId>

            <version>1.9.13</version>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-core</artifactId>

            <version>2.8.2</version>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-databind</artifactId>

            <version>2.8.2</version>

        </dependency>

        <!-- 上传组件包 -->

        <dependency>

            <groupId>commons-fileupload</groupId>

            <artifactId>commons-fileupload</artifactId>

            <version>1.3.1</version>

        </dependency>

        <dependency>

            <groupId>commons-io</groupId>

            <artifactId>commons-io</artifactId>

            <version>2.4</version>

        </dependency>

        <dependency>

            <groupId>commons-codec</groupId>

            <artifactId>commons-codec</artifactId>

            <version>1.9</version>

        </dependency>

2.添加配置文件spring-mvc.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-4.3.xsd

                        http://www.springframework.org/schema/context

                        http://www.springframework.org/schema/context/spring-context-4.3.xsd

                        http://www.springframework.org/schema/mvc

                        http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">

    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->

    <context:component-scan base-package="com.controller" />

    <!--避免IE执行AJAX时，返回JSON出现下载文件 -->

    <bean id="mappingJacksonHttpMessageConverter"

        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

        <property name="supportedMediaTypes">

            <list>

                <value>text/html;charset=UTF-8</value>

            </list>

        </property>

    </bean>

    <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->

    <bean

        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

        <property name="messageConverters">

            <list>

                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->

            </list>

        </property>

    </bean>

    <!-- 定义跳转的文件的前后缀 ，视图模式配置-->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->

        <property name="prefix" value="/WEB-INF/jsp/" />

        <property name="suffix" value=".jsp" />

    </bean>  

    <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->

    <bean id="multipartResolver"

        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

        <!-- 默认编码 -->

        <property name="defaultEncoding" value="utf-8" />

        <!-- 文件大小最大值 -->

        <property name="maxUploadSize" value="10485760000" />

        <!-- 内存中的最大值 -->

        <property name="maxInMemorySize" value="40960" />

    </bean>   

</beans>

3修改web.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

    version="3.0">

    <welcome-file-list>

        <welcome-file>index.jsp</welcome-file>

    </welcome-file-list>

    <listener>

        <description>Spring监听器</description>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

    <!-- ContextLoaderListener初始化Spring上下文时需要使用到的contextConfigLocation参数 -->

    <context-param>

        <param-name>contextConfigLocation</param-name>

        <!-- 配置spring.xml和spring-mybatis.xml这两个配置文件的位置，固定写法 -->

        <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value>

    </context-param>

    <!-- 编码过滤器 -->

    <filter>

        <filter-name>encodingFilter</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <async-supported>true</async-supported>

        <init-param>

            <param-name>encoding</param-name>

            <param-value>UTF-8</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>encodingFilter</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <!-- 防止Spring内存溢出监听器 -->

    <listener>

        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

    </listener>

    <!-- Spring MVC servlet -->

    <servlet>

        <servlet-name>SpringMVC</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>classpath:spring-mvc.xml</param-value>

        </init-param>

        <load-on-startup>1</load-on-startup>

        <async-supported>true</async-supported>

    </servlet>

    <servlet-mapping>

        <servlet-name>SpringMVC</servlet-name>

        <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->

        <url-pattern>/</url-pattern>

    </servlet-mapping>

</web-app>

4.在controller包下创建类UserController

package com.controller;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.ResponseBody;

import com.model.User;

import com.service.UserServiceI;

@Controller

@RequestMapping("/user")

public class UserController {

    @Resource

    private UserServiceI userService;

    /**

     * 跳转页面测试

     */

    @RequestMapping("/showUser")

    public String toIndex(HttpServletRequest request, Model model) {

        String userId = request.getParameter("id");

        User user = this.userService.getUserById(userId);

        model.addAttribute("user", user);

        return "showUser";

    }

    /**

     * 一般接口

     */

    @RequestMapping(value = "/getUserById", method = RequestMethod.GET)

    @ResponseBody

    public Object getUserById(HttpServletRequest request, Model model) {

        String userId = request.getParameter("id");

        User user = this.userService.getUserById(userId);

        model.addAttribute("user", user);

        return user.getUserName();

    }

}

这里有可能提示访问受限@Resource上，提示The type Resource is not accessible due to restriction on required library

点击项目属性preferences>java build path>把右侧【libraries中的JRE System Library】删除重新导入即可

5.调用普通接口测试结果，这里结果应该需要写一个封装对象。稍后补充

6.页面跳转接口需要创建对应的jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>测试</title>

  </head>  

  <body>

    ${user.userName}

  </body>

</html>

测试结果

完成之后修改了mapper文件包位置，移入resources文件夹，修改对应的配置文件中的路径，

码农公寓

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