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SSM框架——详细整合教程(Spring+SpringMVC+MyBatis)
 
   次浏览      
 2019-4-19  
 
编辑推荐:

本文来自于cnblogs,文章中主要介绍了基本的概念,整合环境配置,测试等介绍较为详细,详情请看下文。

 

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

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):

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

<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版本号 -->
<spring.version>4.0.2.RELEASE</spring.version>
<!-- mybatis版本号 -->
<mybatis.version>3.2.6</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>

<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<!-- 表示开发的时候引入,发布的时候不会加载此包 -->
<scope>test</scope>
</dependency>
<!-- <dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency> -->

<!-- spring核心包 -->
<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>${spring.version}</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>

<!-- 导入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>

<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.36</version>
</dependency>
<!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>

<!-- JSTL标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.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>


<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 -->
<!-- 映入JSON -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</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>

</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>

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。

<?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">
<!-- 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.javen.controller" />
<!-- 扩充了注解驱动,可以将请求参数绑定到控制器参数 -->
<mvc:annotation-driven/>
<!-- 静态资源处理 css js imgs -->
<mvc:resources location= "/resources/**" mapping="/resources"/>

<!--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.MappingJackson HttpMessageConverter">
<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>

<!-- 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" />
<!-- 启用是为了推迟文件解析,以便捕获文件大小异常 -->
<property name="resolveLazily" value="true"/>
</bean>

<!-- 配置ViewResolver 。可用多个ViewResolver 。使用order属性排序。 InternalResourceViewResolver 放在最后-->
<bean class="org.springframework.web .servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1"></property>
<property name="mediaTypes">
<map>
<!-- 告诉视图解析器,返回的类型为json格式 -->
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
<entry key="htm" value="text/htm" />
</map>
</property>
<property name="defaultViews">
<list>
<!-- ModelAndView里的数据变成JSON -->
<bean class="org.springframework.web .servlet.view.json.MappingJacksonJsonView" />
</list>
</property>
<property name="ignoreAcceptHeader" value="true"></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>
</beans>

 

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

<?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>
<!-- Spring和mybatis的配置文件 -->
<!-- <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>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>
<!-- Spring监听器 -->
<!-- <listener>
<listener-class>org.springframework.web .context.ContextLoaderListener</listener-class>
</listener> -->
<!-- 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>
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list>

</web-app>

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

下面给出配置文件目录:

log4j.properties

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

 

3.2.4、使用Jetty测试

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 + "]";
}


}

 

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";
}
}

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

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)

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

 

此时的目录结构为

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

<?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">
<!-- 自动扫描 -->
<context:component-scan base-package="com.javen" />

<!-- 引入配置文件 -->
<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}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}"></property>
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}"></property>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}"></property>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}"></property>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}"></property>
</bean>

<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:com/javen/mapping/*.xml" ></property>
</bean>

<!-- DAO接口所在包名,Spring会自动查找其下的类 -->
<bean class= "org.mybatis.spring.mapper .MapperScannerConfigurer">
<property name= "basePackage" value="com.javen.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" ></property>
</bean>

<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id=" transactionManager"
class="org.springframework .jdbc.datasource .DataSourceTransactionManager">
<property name= "dataSource" ref="dataSource" />
</bean>

</beans>

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:

-- ----------------------------
-- 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');

 

3.4.2、利用MyBatis Generator自动创建代码

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:

3.4.3、建立Service接口和实现类

下面给出具体的内容:

IUserService.jave

package com.javen.service;

import com.javen.model.User;


public interface IUserService {
public User getUserById(int userId);
}

 

UserServiceImpl.java

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);
}

}

 

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。

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));
}
}

 

测试结果

3.4.5、建立UserController类

UserController.java 控制器

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";
}
}

3.4.6、新建jsp页面

file.jsp

<%@ 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>

 

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

 

showUser.jsp

<%@ 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>

 

至此,完成Spring+SpingMVC+mybatis这三大框架整合完成。

3.4.7、部署项目

输入地址:http://localhost/user/jsontype/2

项目下载

   
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