《SSM框架搭建》三.整合spring web

感謝學習http://blog.csdn.net/zhshulin/article/details/37956105#，還是修改了spring到最新的版本和接口開發示例

根據前一篇日志，已經有了mybatis3+spring4的maven項目，在這基礎上繼續整合

1，首先下載需要的jar包，這里使用了全局參數，並添加以下jar包，（這里還拋出過異常找不到fasterxml/jackson/core/JsonProcessingException，在maven庫也找了蠻久）

<properties>
        <!-- spring版本號 -->
        <spring.version>4.3.2.RELEASE</spring.version>
        <!-- mybatis版本號 -->
        <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>
        <!-- 格式化對象，方便輸出日志 -->
        <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>
        <!-- 上傳組件包 -->
        <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">  
    <!-- 自動掃描該包，使SpringMVC認為包下用了@controller注解的類是控制器 -->  
    <context:component-scan base-package="com.controller" />  
    <!--避免IE執行AJAX時，返回JSON出現下載文件 -->  
    <bean id="mappingJacksonHttpMessageConverter"  
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/html;charset=UTF-8</value>  
            </list>  
        </property>  
    </bean>  
    <!-- 啟動SpringMVC的注解功能，完成請求和注解POJO的映射 -->  
    <bean  
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON轉換器 -->  
            </list>  
        </property>  
    </bean>  
    <!-- 定義跳轉的文件的前后綴 ，視圖模式配置-->  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <!-- 這里的配置我的理解是自動給后面action的方法return的字符串加上前綴和后綴，變成一個 可用的url地址 -->  
        <property name="prefix" value="/WEB-INF/jsp/" />  
        <property name="suffix" value=".jsp" />  
    </bean>  
      
    <!-- 配置文件上傳，如果沒有使用文件上傳可以不用配置，當然如果不配，那么配置文件中也不必引入上傳組件包 -->  
    <bean id="multipartResolver"    
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    
        <!-- 默認編碼 -->  
        <property name="defaultEncoding" value="utf-8" />    
        <!-- 文件大小最大值 -->  
        <property name="maxUploadSize" value="10485760000" />    
        <!-- 內存中的最大值 -->  
        <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監聽器</description>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- ContextLoaderListener初始化Spring上下文時需要使用到的contextConfigLocation參數 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <!-- 配置spring.xml和spring-mybatis.xml這兩個配置文件的位置，固定寫法 -->
        <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value>
    </context-param>

    <!-- 編碼過濾器 -->  
    <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內存溢出監聽器 -->  
    <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>  
        <!-- 此處可以可以配置成*.do，對應struts的后綴習慣 -->  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
</web-app>

4.在controller包下創建類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;

    /**
     * 跳轉頁面測試
     */
    @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();
    }
}

這里有可能提示訪問受限@Resource上，提示The type Resource is not accessible due to restriction on required library

點擊項目屬性preferences>java build path>把右側【libraries中的JRE System Library】刪除重新導入即可

5.調用普通接口測試結果，這里結果應該需要寫一個封裝對象。稍后補充

6.頁面跳轉接口需要創建對應的jsp頁面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>測試</title> </head> <body> ${user.userName} </body> </html> 

測試結果

 完成之后修改了mapper文件包位置，移入resources文件夾，修改對應的配置文件中的路徑，