ssm-项目搭建实践教程

柔光的暖阳◎ 2022-05-19 13:57 231阅读 0赞

# 1、基本概念 #

## 1.1、Spring  ##

Spring是一个开源框架，Spring是于2003 年兴起的一个轻量级的Java 开发框架，由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而，Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何Java应用都可以从Spring中受益。 简单来说，Spring是一个轻量级的控制反转（IoC）和面向切面（AOP）的容器框架。

## 1.2、SpringMVC      ##

Spring MVC属于SpringFrameWork的后续产品，已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

## 1.3、MyBatis ##

MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code，并且改名为MyBatis 。MyBatis是一个基于Java的持久层框架。iBATIS提供的持久层框架包括SQL Maps和Data Access Objects（DAO）MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射，将接口和 Java 的POJOs（Plain Old Java Objects，普通的 Java对象）映射成数据库中的记录。

# 2、开发环境搭建以及创建Maven Web项目 #

**参看之前的博文：http://www.cnblogs.com/zyw-205520/p/4767633.html**

# 3、SSM整合 #

下面主要介绍三大框架的整合，至于环境的搭建以及项目的创建，参看上面的博文。这次整合我分了2个配置文件，分别是spring-mybatis.xml，包含spring和mybatis的配置文件，还有个是spring-mvc的配置文件，此外有2个资源文件：jdbc.propertis和log4j.properties。完整目录结构如下（最后附上源码下载地址）：

![441423-20150830174644562-871463833.png][]

使用框架的版本：

Spring 4.0.2 RELEASE

Spring MVC 4.0.2 RELEASE

MyBatis 3.2.6

## 3.1、Maven引入需要的JAR包 ##

在pom.xml中引入jar包

![复制代码][copycode.gif]

<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>com.javen.maven01</groupId>
        <artifactId>maven01</artifactId>
        <packaging>war</packaging>
        <version>0.0.1-SNAPSHOT</version>
        <name>maven01 Maven Webapp</name>
        <url>http://maven.apache.org</url>
        
        <properties>  
              
            <spring.version>4.0.2.RELEASE</spring.version>  
              
            <mybatis.version>3.2.6</mybatis.version>  
              
            <slf4j.version>1.7.7</slf4j.version>  
            <log4j.version>1.2.17</log4j.version>  
        </properties> 
        
        <dependencies>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>3.8.1</version>
                   
                <scope>test</scope>
            </dependency>
            
            
               
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-core</artifactId>  
                <version>${spring.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-web</artifactId>  
                <version>${spring.version}</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-oxm</artifactId>  
                <version>${spring.version}</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-tx</artifactId>  
                <version>${spring.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-jdbc</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>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-test</artifactId>  
                <version>${spring.version}</version>  
            </dependency>  
              
            <dependency>  
                <groupId>org.mybatis</groupId>  
                <artifactId>mybatis</artifactId>  
                <version>${mybatis.version}</version>  
            </dependency>  
               
            <dependency>  
                <groupId>org.mybatis</groupId>  
                <artifactId>mybatis-spring</artifactId>  
                <version>1.2.2</version>  
            </dependency>  
            
               
            <dependency>  
                <groupId>javax</groupId>  
                <artifactId>javaee-api</artifactId>  
                <version>7.0</version>  
            </dependency>  
            
               
            <dependency>  
                <groupId>mysql</groupId>  
                <artifactId>mysql-connector-java</artifactId>  
                <version>5.1.36</version>  
            </dependency>  
              
            <dependency>  
                <groupId>commons-dbcp</groupId>  
                <artifactId>commons-dbcp</artifactId>  
                <version>1.2.2</version>  
            </dependency>  
            
              
            <dependency>  
                <groupId>jstl</groupId>  
                <artifactId>jstl</artifactId>  
                <version>1.2</version>  
            </dependency>  
              
              
            <dependency>  
                <groupId>log4j</groupId>  
                <artifactId>log4j</artifactId>  
                <version>${log4j.version}</version>  
            </dependency>  
              
              
              
            <dependency>  
                <groupId>com.alibaba</groupId>  
                <artifactId>fastjson</artifactId>  
                <version>1.1.41</version>  
            </dependency>  
      
      
            <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>  
              
              
            <dependency>  
                <groupId>org.codehaus.jackson</groupId>  
                <artifactId>jackson-mapper-asl</artifactId>  
                <version>1.9.13</version>  
            </dependency>  
              
            <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>  
    
        </dependencies>
        
        <build>
            <finalName>maven01</finalName>
            <plugins>
                <plugin>
                    <groupId>org.eclipse.jetty</groupId>
                    <artifactId>jetty-maven-plugin</artifactId>
                    <version>9.2.8.v20150217</version>
                    <configuration>
                        <httpConnector>
                            <port>80</port>
                        </httpConnector>
                        <stopKey>shutdown</stopKey>
                        <stopPort>9966</stopPort>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    
    </project>

![复制代码][copycode.gif]

## 3.2、整合SpringMVC ##

### 3.2.1、配置spring-mvc.xml ###

配置里面的注释也很详细，主要是自动扫描控制器，视图模式，注解的启动这三个。

![复制代码][copycode.gif]

<?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-3.1.xsd    
                            http://www.springframework.org/schema/context    
                            http://www.springframework.org/schema/context/spring-context-3.1.xsd    
                            http://www.springframework.org/schema/mvc    
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
          
        <context:component-scan base-package="com.javen.controller" />  
        
        <mvc:annotation-driven/>
        
        <mvc:resources location="/resources/**" mapping="/resources"/>
        
          
        <bean id="mappingJacksonHttpMessageConverter"  
            class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">  
            <property name="supportedMediaTypes">  
                <list>  
                    <value>text/html;charset=UTF-8</value>  
                </list>  
            </property>  
        </bean>  
          
        <bean  
            class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
            <property name="messageConverters">  
                <list>  
                    <ref bean="mappingJacksonHttpMessageConverter" />   
                </list>  
            </property>  
        </bean>  
          
          
        <bean id="multipartResolver"    
            class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    
              
            <property name="defaultEncoding" value="utf-8" />    
              
            <property name="maxUploadSize" value="10485760000" />    
              
            <property name="maxInMemorySize" value="40960" />    
            
            <property name="resolveLazily" value="true"/>
        </bean>   
        
        
        <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
        <property name="order" value="1"></property>
            <property name="mediaTypes">
                <map>
                    
                    <entry key="json" value="application/json" />
                    <entry key="xml" value="application/xml" />
                    <entry key="htm" value="text/htm" />
                </map>
            </property>
            <property name="defaultViews">
                <list>
                    
                    <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
                </list>
            </property>
            <property name="ignoreAcceptHeader" value="true"></property>
        </bean>
        
         
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
              
            <property name="prefix" value="/WEB-INF/jsp/" />  
            <property name="suffix" value=".jsp" />  
        </bean>  
    </beans>

![复制代码][copycode.gif]

### 3.2.2、配置web.xml文件 ###

配置的spring-mvc的Servlet就是为了完成SpringMVC+MAVEN的整合。

web.xml

![复制代码][copycode.gif]

<?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_3_0.xsd"  
        version="3.0">  
        <display-name>Archetype Created Web Application</display-name>  
          
       
          
        <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>  
          
       
          
         
      
          
        <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>  
              
            <url-pattern>/</url-pattern>  
        </servlet-mapping>  
        <welcome-file-list>  
            <welcome-file>/index.jsp</welcome-file>  
        </welcome-file-list>  
      
    </web-app>

![复制代码][copycode.gif]

### 3.2.3、Log4j的配置 ###

为了方便调试，一般都会使用日志来输出信息，Log4j是Apache的一个开放源代码项目，通过使用Log4j，我们可以控制日志信息输送的目的地是控制台、文件、GUI组件，甚至是套接口服务器、NT的事件记录器、UNIX Syslog守护进程等；我们也可以控制每一条日志的输出格式；通过定义每一条日志信息的级别，我们能够更加细致地控制日志的生成过程。

Log4j的配置很简单，而且也是通用的，下面给出一个基本的配置，换到其他项目中也无需做多大的调整，如果想做调整或者想了解Log4j的各种配置，参看我转载的一篇博文，很详细：[http://blog.csdn.net/zhshulin/article/details/37937365][http_blog.csdn.net_zhshulin_article_details_37937365]

下面给出配置文件目录：

![441423-20150830161022859-271175533.png][]

log4j.properties

![复制代码][copycode.gif]

log4j.rootLogger=INFO,Console,File  
    #定义日志输出目的地为控制台  
    log4j.appender.Console=org.apache.log4j.ConsoleAppender  
    log4j.appender.Console.Target=System.out  
    #可以灵活地指定日志输出格式，下面一行是指定具体的格式  
    log4j.appender.Console.layout = org.apache.log4j.PatternLayout  
    log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n  
      
    #文件大小到达指定尺寸的时候产生一个新的文件  
    log4j.appender.File = org.apache.log4j.RollingFileAppender  
    #指定输出目录  
    log4j.appender.File.File = logs/ssm.log  
    #定义文件最大大小  
    log4j.appender.File.MaxFileSize = 10MB  
    # 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志  
    log4j.appender.File.Threshold = ALL  
    log4j.appender.File.layout = org.apache.log4j.PatternLayout  
    log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

![复制代码][copycode.gif]

### 3.2.4、使用Jetty测试 ###

**![441423-20150830165405344-862946687.png][]**

![复制代码][copycode.gif]

package com.javen.model;
    
    public class User {
        private Integer id;
    
        private String userName;
    
        private String password;
    
        private Integer age;
    
        public Integer getId() {
            return id;
        }
    
        public void setId(Integer id) {
            this.id = id;
        }
    
        public String getUserName() {
            return userName;
        }
    
        public void setUserName(String userName) {
            this.userName = userName == null ? null : userName.trim();
        }
    
        public String getPassword() {
            return password;
        }
    
        public void setPassword(String password) {
            this.password = password == null ? null : password.trim();
        }
    
        public Integer getAge() {
            return age;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    
        @Override
        public String toString() {
            return "User [id=" + id + ", userName=" + userName + ", password="
                    + password + ", age=" + age + "]";
        }
        
        
    }

![复制代码][copycode.gif]

package com.javen.controller;
    import javax.servlet.http.HttpServletRequest;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    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 com.javen.model.User;
      
      
    @Controller  
    @RequestMapping("/user")  
    // /user/**
    public class UserController {  
        private static Logger log=LoggerFactory.getLogger(UserController.class);
          
        
        // /user/test?id=1
        @RequestMapping(value="/test",method=RequestMethod.GET)  
        public String test(HttpServletRequest request,Model model){  
            int userId = Integer.parseInt(request.getParameter("id"));  
            System.out.println("userId:"+userId);
            User user=null;
            if (userId==1) {
                 user = new User();  
                 user.setAge(11);
                 user.setId(1);
                 user.setPassword("123");
                 user.setUserName("javen");
            }
           
            log.debug(user.toString());
            model.addAttribute("user", user);  
            return "index";  
        }  
    }

![复制代码][copycode.gif]

**                              ![441423-20150830165700734-984268491.png][] ![441423-20150830165755156-107359445.png][]**

**在浏览器中输入：http://localhost/user/test?id=1**

**![441423-20150830165857500-208786509.png][]**

**到此 SpringMVC+Maven 整合完毕**

** **

###    3.3 Spring与MyBatis的整合 ###

**   取消****3.2.2 web.xml中注释的代码 **

** **

### 3.3.1、建立JDBC属性文件 ###

jdbc.properties（文件编码修改为utf-8）

![复制代码][copycode.gif]

driver=com.mysql.jdbc.Driver
    url=jdbc:mysql://localhost:3306/maven
    username=root
    password=root
    #定义初始连接数  
    initialSize=0  
    #定义最大连接数  
    maxActive=20  
    #定义最大空闲  
    maxIdle=20  
    #定义最小空闲  
    minIdle=1  
    #定义最长等待时间  
    maxWait=60000

![复制代码][copycode.gif]

**此时的目录结构为 **

###                                                               ![441423-20150830170643640-637516889.png][] ###

### 3.3.2、建立spring-mybatis.xml配置文件 ###

这个文件就是用来完成spring和mybatis的整合的。这里面也没多少行配置，主要的就是自动扫描，自动注入，配置数据库。注释也很详细，大家看看就明白了。

spring-mybatis.xml

![复制代码][copycode.gif]

<?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-3.1.xsd    
                            http://www.springframework.org/schema/context    
                            http://www.springframework.org/schema/context/spring-context-3.1.xsd    
                            http://www.springframework.org/schema/mvc    
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
          
        <context:component-scan base-package="com.javen" />  
        
          
        <bean id="propertyConfigurer"  
            class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
            <property name="location" value="classpath:jdbc.properties" />  
        </bean>  
      
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
            destroy-method="close">  
            <property name="driverClassName" value="${driver}" />  
            <property name="url" value="${url}" />  
            <property name="username" value="${username}" />  
            <property name="password" value="${password}" />  
              
            <property name="initialSize" value="${initialSize}"></property>  
              
            <property name="maxActive" value="${maxActive}"></property>  
              
            <property name="maxIdle" value="${maxIdle}"></property>  
              
            <property name="minIdle" value="${minIdle}"></property>  
              
            <property name="maxWait" value="${maxWait}"></property>  
        </bean>  
      
          
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
            <property name="dataSource" ref="dataSource" />  
              
            <property name="mapperLocations" value="classpath:com/javen/mapping/*.xml"></property>  
        </bean>  
      
          
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
            <property name="basePackage" value="com.javen.dao" />  
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
        </bean>  
      
          
        <bean id="transactionManager"  
            class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
            <property name="dataSource" ref="dataSource" />  
        </bean>  
      
    </beans>

![复制代码][copycode.gif]

### 3.4、JUnit测试 ###

经过以上步骤，我们已经完成了Spring和mybatis的整合，这样我们就可以编写一段测试代码来试试是否成功了。

3.4.1、创建测试用表

既然我们需要测试，那么我们就需要建立在数据库中建立一个测试表，这个表建的很简单，SQL语句为：

![复制代码][copycode.gif]

-- ----------------------------
    -- Table structure for `user_t`
    -- ----------------------------
    DROP TABLE IF EXISTS `user_t`;
    CREATE TABLE `user_t` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `user_name` varchar(40) NOT NULL,
      `password` varchar(255) NOT NULL,
      `age` int(4) NOT NULL,
      PRIMARY KEY (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
    
    -- ----------------------------
    -- Records of user_t
    -- ----------------------------
    INSERT INTO `user_t` VALUES ('1', '测试', '345', '24');
    INSERT INTO `user_t` VALUES ('2', 'javen', '123', '10');

![复制代码][copycode.gif]

3.4.2、利用MyBatis Generator自动创建代码

参考博文：[http://blog.csdn.net/zhshulin/article/details/23912615][http_blog.csdn.net_zhshulin_article_details_23912615]

这个可根据表自动创建实体类、MyBatis映射文件以及DAO接口，当然，我习惯将生成的接口名改为IUserDao，而不是直接用它生成的UserMapper。如果不想麻烦就可以不改。完成后将文件复制到工程中。如图：

![441423-20150830172815890-478987509.png][]

3.4.3、建立Service接口和实现类

**                                                                 ![441423-20150830173103875-2026469790.png][]**

下面给出具体的内容：

IUserService.jave

![复制代码][copycode.gif]

package com.javen.service;  
    
    import com.javen.model.User;
      
      
    public interface IUserService {  
        public User getUserById(int userId);  
    }

![复制代码][copycode.gif]

UserServiceImpl.java

![复制代码][copycode.gif]

package com.javen.service.impl;
    import javax.annotation.Resource;  
    
    import org.springframework.stereotype.Service;  
    import com.javen.dao.IUserDao;
    import com.javen.model.User;
    import com.javen.service.IUserService;
      
      
    @Service("userService")  
    public class UserServiceImpl implements IUserService {  
        @Resource  
        private IUserDao userDao;  
        
        public User getUserById(int userId) {  
            // TODO Auto-generated method stub  
            return this.userDao.selectByPrimaryKey(userId);  
        }  
      
    }

![复制代码][copycode.gif]

3.4.4、建立测试类

测试类在src/test/java中建立，下面测试类中注释掉的部分是不使用Spring时，一般情况下的一种测试方法；如果使用了Spring那么就可以使用注解的方式来引入配置文件和类，然后再将service接口对象注入，就可以进行测试了。

如果测试成功，表示Spring和Mybatis已经整合成功了。输出信息使用的是Log4j打印到控制台。

![复制代码][copycode.gif]

package com.javen.testmybatis;
    
    import javax.annotation.Resource;  
    
    import org.apache.log4j.Logger;  
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.test.context.ContextConfiguration;  
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;  
    import com.alibaba.fastjson.JSON;  
    import com.javen.model.User;
    import com.javen.service.IUserService;
      
    @RunWith(SpringJUnit4ClassRunner.class)     //表示继承了SpringJUnit4ClassRunner类  
    @ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})  
      
    public class TestMyBatis {  
        private static Logger logger = Logger.getLogger(TestMyBatis.class);  
    //  private ApplicationContext ac = null;  
        @Resource  
        private IUserService userService = null;  
      
    //  @Before  
    //  public void before() {  
    //      ac = new ClassPathXmlApplicationContext("applicationContext.xml");  
    //      userService = (IUserService) ac.getBean("userService");  
    //  }  
      
        @Test  
        public void test1() {  
            User user = userService.getUserById(1);  
            // System.out.println(user.getUserName());  
            // logger.info("值："+user.getUserName());  
            logger.info(JSON.toJSONString(user));  
        }  
    }

![复制代码][copycode.gif]

测试结果

![441423-20150830173453859-1226139271.png][]

3.4.5、建立UserController类

UserController.java  控制器

![复制代码][copycode.gif]

package com.javen.controller;
    import java.io.File;
    import java.io.IOException;
    import java.util.Map;
    
    import javax.annotation.Resource;
    import javax.servlet.http.HttpServletRequest;
    
    import org.apache.commons.io.FileUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.http.HttpStatus;
    import org.springframework.http.ResponseEntity;
    import org.springframework.stereotype.Controller;  
    import org.springframework.ui.Model;  
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;  
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.multipart.MultipartFile;
    
    import com.javen.model.User;
    import com.javen.service.IUserService;
      
      
    @Controller  
    @RequestMapping("/user")  
    // /user/**
    public class UserController {  
        private static Logger log=LoggerFactory.getLogger(UserController.class);
         @Resource  
         private IUserService userService;     
        
        // /user/test?id=1
        @RequestMapping(value="/test",method=RequestMethod.GET)  
        public String test(HttpServletRequest request,Model model){  
            int userId = Integer.parseInt(request.getParameter("id"));  
            System.out.println("userId:"+userId);
            User user=null;
            if (userId==1) {
                 user = new User();  
                 user.setAge(11);
                 user.setId(1);
                 user.setPassword("123");
                 user.setUserName("javen");
            }
           
            log.debug(user.toString());
            model.addAttribute("user", user);  
            return "index";  
        }  
        
        
        // /user/showUser?id=1
        @RequestMapping(value="/showUser",method=RequestMethod.GET)  
        public String toIndex(HttpServletRequest request,Model model){  
            int userId = Integer.parseInt(request.getParameter("id"));  
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);  
            log.debug(user.toString());
            model.addAttribute("user", user);  
            return "showUser";  
        }  
        
     // /user/showUser2?id=1
        @RequestMapping(value="/showUser2",method=RequestMethod.GET)  
        public String toIndex2(@RequestParam("id") String id,Model model){  
            int userId = Integer.parseInt(id);  
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);  
            log.debug(user.toString());
            model.addAttribute("user", user);  
            return "showUser";  
        }  
        
        
        // /user/showUser3/{id}
        @RequestMapping(value="/showUser3/{id}",method=RequestMethod.GET)  
        public String toIndex3(@PathVariable("id")String id,Map<String, Object> model){  
            int userId = Integer.parseInt(id);  
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);  
            log.debug(user.toString());
            model.put("user", user);  
            return "showUser";  
        }  
        
     // /user/{id}
        @RequestMapping(value="/{id}",method=RequestMethod.GET)  
        public @ResponseBody User getUserInJson(@PathVariable String id,Map<String, Object> model){  
            int userId = Integer.parseInt(id);  
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);  
            log.info(user.toString());
            return user;  
        }  
        
        // /user/{id}
        @RequestMapping(value="/jsontype/{id}",method=RequestMethod.GET)  
        public ResponseEntity<User>  getUserInJson2(@PathVariable String id,Map<String, Object> model){  
            int userId = Integer.parseInt(id);  
            System.out.println("userId:"+userId);
            User user = this.userService.getUserById(userId);  
            log.info(user.toString());
            return new ResponseEntity<User>(user,HttpStatus.OK);  
        } 
        
        //文件上传、
        @RequestMapping(value="/upload")
        public String showUploadPage(){
            return "user_admin/file";
        }
        
        @RequestMapping(value="/doUpload",method=RequestMethod.POST)
        public String doUploadFile(@RequestParam("file")MultipartFile file) throws IOException{
            if (!file.isEmpty()) {
                log.info("Process file:{}",file.getOriginalFilename());
            }
            FileUtils.copyInputStreamToFile(file.getInputStream(), new File("E:\\",System.currentTimeMillis()+file.getOriginalFilename()));
            return "succes";
        }
    }

![复制代码][copycode.gif]

3.4.6、新建jsp页面

file.jsp

![复制代码][copycode.gif]

<%@ 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">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Insert title here</title>
    </head>
    <body>
        <h1>上传文件</h1>
        <form method="post" action="/user/doUpload" enctype="multipart/form-data">
            <input type="file" name="file"/>
            <input type="submit" value="上传文件"/>
            
        </form>
    </body>
    </html>

![复制代码][copycode.gif]

index.jsp

<html>
    <body>
    <h2>Hello World!</h2>
    </body>
    </html>

showUser.jsp

![复制代码][copycode.gif]

<%@ 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>

[441423-20150830174644562-871463833.png]: /images/20220519/01a86e9556204c249e705d95d940fb91.png
[copycode.gif]: /images/20220519/76b27522b00343f8aa25d40a81b2f030.png
[http_blog.csdn.net_zhshulin_article_details_37937365]: http://blog.csdn.net/zhshulin/article/details/37937365
[441423-20150830161022859-271175533.png]: /images/20220519/720c6bfa48f04d0b8366ca7c6e279035.png
[441423-20150830165405344-862946687.png]: /images/20220519/ac8855bb1e9645d8b38e82393da38b26.png
[441423-20150830165700734-984268491.png]: https://images2015.cnblogs.com/blog/441423/201508/441423-20150830165700734-984268491.png
[441423-20150830165755156-107359445.png]: /images/20220519/fb0923d800494d258e30c443f54ae414.png
[441423-20150830165857500-208786509.png]: /images/20220519/4799bea0636f488e8f2461779bec0a55.png
[441423-20150830170643640-637516889.png]: /images/20220519/1e75ac984e41402282a5bae4103f3459.png
[http_blog.csdn.net_zhshulin_article_details_23912615]: http://blog.csdn.net/zhshulin/article/details/23912615
[441423-20150830172815890-478987509.png]: /images/20220519/ce51747f58e84b348e7bbb1ec4a0d30b.png
[441423-20150830173103875-2026469790.png]: /images/20220519/91a259691a5a46b59525588913fba176.png
[441423-20150830173453859-1226139271.png]: /images/20220519/bd945d0c42464bfb804a42642c7c97fc.png