SSM框架搭建
2019-05-20 18:07
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版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/tianshidebeisang/article/details/89714992
新手一个，毕设需要用SSM框架做一个管理系统，之前从没用过SSM，但是通过网上的教程来做，因为各种原因，或是莫名缺包，或是版本不匹配，始终没有搭建起自己的SSM框架，就放弃了。但是今天突发奇想，再试着搭建一次，莫名其妙就成功了，特此记录。
1. 项目结构图
2. JAR包
因为没使用maven，所以用的是导包的形式。
3. Spring与Mybatis的整合
首先，做的是Spring和Mybatis的整合。话不多说，直接上源码。
3.1. JDBC属性文件
db.properties
jdbc.driverClass=com.mysql.jdbc.Driver jdbc.jdbcUrl=jdbc:mysql://localhost:3306/lxldb?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false jdbc.user=root jdbc.password=123456
3.2. spring整合mybatis的配置文件
SMConfig.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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<context:component-scan base-package="com.lxl"></context:component-scan>
<context:property-placeholder location="classpath:db.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"></property>
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
<property name="user" value="${jdbc.user}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="initialPoolSize" value="5"></property>
<property name="minPoolSize" value="1"></property>
<property name="maxPoolSize" value="40"></property>
<property name="maxIdleTime" value="20"></property>
</bean>
<!-- 不再需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- 自动扫描mapper.xml文件 -->
<property name="mapperLocations" value="classpath:com/lxl/mapper/*.xml"></property>
</bean>
<!-- Mapper接口所在的包 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.lxl.mapper"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- 事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:annotation-driven/>
</beans>
3.3. Log4j配置文件
log4j.properties
# Global logging configuration log4j.rootLogger=DEBUG, stdout # MyBatis logging configuration... log4j.logger.org.mybatis.example.BlogMapper=TRACE # Console output... log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
这样，spring和mybatis已经整合完成了，下面进行测试。
4. 测试Spring与Mybatis整合结果
4.1. 建表
建表我用的是Navicat，可以不用SQL语句，但为了方便不用该软件的同志，还是列出SQL。
SQL语句：
CREATE TABLE `t_user` ( `id` int(11) NOT NULL AUTO_INCREMENT, `username` varchar(255) DEFAULT NULL, `password` varchar(255) DEFAULT NULL, `age` int(2) DEFAULT NULL, `num` int(8) DEFAULT NULL, `price` float(8,2) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
4.2. 建立实体和映射
其实mybatis有generator自动生成实体和映射的工具，但是我觉得还是自己建比较实际，虽然累，但是不会有很多冗余的代码存在，看着干净一些。
4.1.1. 建立实体
User.java
package com.lxl.entity;
public class User {
private int id;
private String username;
private String password;
private int age;
private int num;
private float price;
public void setId(int id) {
this.id = id;
}
public int getId() {
return this.id;
}
public void setAge(int age) {
this.age = age;
}
public int getAge() {
return this.age;
}
public void setUsername(String username) {
this.username = username;
}
public String getUsername() {
return this.username;
}
public void setPassword(String password) {
this.password = password;
}
public String getPassword() {
return this.password;
}
public void setNum(int num) {
this.num = num;
}
public int getNum() {
return this.num;
}
public void setPrice(float price) {
this.price = price;
}
public float getPrice() {
return this.price;
}
public String toString(){
return "编号为："+id+",姓名为："+username+",密码为："+password+",年龄为："+age+" "+num+" "+price;
}
}
4.1.2. 建立映射及其接口
UserMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "mybatis-3-mapper.dtd" >
<mapper namespace="com.lxl.mapper.UserMapper">
<resultMap type="com.lxl.entity.User" id="BaseResultMap">
<id column="id" jdbcType="INTEGER" property="id" />
<result column="username" jdbcType="VARCHAR" property="username"/>
<result column="password" jdbcType="VARCHAR" property="password"/>
<result column="age" jdbcType="INTEGER" property="age"/>
<result column="num" jdbcType="INTEGER" property="num"/>
<result column="price" jdbcType="FLOAT" property="price"/>
</resultMap>
<sql id="Base_Column_List">
id,username,password,age,num,price
</sql>
<select id="selectAll" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"></include>
from t_user
</select>
<select id="findUserById" parameterType="int" resultType="com.lxl.entity.User">
select * from t_user where id = #{id}
</select>
<insert id="saveUser" parameterType="com.lxl.entity.User" >
insert into t_user(username) values (#{username})
</insert>
<delete id="deleteUserById" parameterType="int">
delete from t_user where id=#{id}
</delete>
<update id="updateUser" parameterType="com.lxl.entity.User">
update t_user set username=#{username} where id=#{id}
</update>
</mapper>
UserMapper.java
package com.lxl.mapper;
import java.util.List;
import com.lxl.entity.User;
public interface UserMapper {
public List<User> selectAll();
public User findUserById(int id);
public int saveUser(User user);
public int deleteUserById(int id);
public int updateUser(User user);
}
4.3. 建立Service接口及其实现类
UserService.java
package com.lxl.service;
import java.util.List;
import com.lxl.entity.User;
public interface UserService {
public List<User> findAll();
public User findUserById(int id);
public boolean saveUser(User user);
public boolean deleteUserById(int id);
public boolean updateUser(User user);
}
UserServiceImpl.java
package com.lxl.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.lxl.entity.User;
import com.lxl.mapper.UserMapper;
@Service("userService")
public class UserServiceImpl implements UserService{
@Autowired
private UserMapper userMapper;
@Transactional
public List<User> findAll() {
return userMapper.selectAll();
}
public User findUserById(int id) {
return userMapper.findUserById(id);
}
public boolean saveUser(User user) {
int ret = userMapper.saveUser(user);
if (ret == 1) {
return true;
}
else {
return false;
}
}
public boolean deleteUserById(int id) {
int ret = userMapper.deleteUserById(id);
if (ret == 1) {
return true;
}
else {
return false;
}
}
public boolean updateUser(User user) {
int ret = userMapper.updateUser(user);
if (ret == 1) {
return true;
}
else {
return false;
}
}
}
4.4. 建立Junit测试
SMTest.java
package junit.test;
import java.util.List;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.lxl.entity.User;
import com.lxl.service.UserService;
public class SMTest {
@Test
public void test() {
String xmlPath = "SMConfig.xml";
ApplicationContext context = new ClassPathXmlApplicationContext(xmlPath);
UserService userService = context.getBean("userService", UserService.class);
List<User> userList = userService.findAll();
for(User temp:userList) {
System.out.println(temp);
}
}
}
右键SMTest.java进行Junit测试。
如果控制台弹出下图结果，则表明整合成功。
5. 整合SpringMVC
5.1. SpringMVC配置文件
springmvc.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: 1b5d8 //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.lxl.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>
5.2. web.xml
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> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!-- Spring和mybatis的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:SMConfig.xml</param-value> </context-param> <!-- 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:springmvc.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> <!-- 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> <!-- 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> </web-app>
5.3. 建立controller文件
UserController.java
package com.lxl.controller;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.lxl.entity.User;
import com.lxl.service.UserService;
@Controller
public class UserController {
@Resource
private UserService userService;
@RequestMapping(value="showuser")
public ModelAndView find(){
//先new一个ModelAndView对象
ModelAndView mav=new ModelAndView();
//以键值队的形式赋值 然后用对象调用方法
mav.addObject("user",userService.findAll());
//要跳转的页面
mav.setViewName("list_user");
//return出来你new的对象
return mav;
}
//预添加
@RequestMapping(value="presaveuser")
public ModelAndView presave(){
return new ModelAndView("save_user");
}
//添加
@RequestMapping(value="saveuser")
public ModelAndView save(User user){
userService.saveUser(user);
return new ModelAndView("redirect:/showuser.do");
}
//删除
@RequestMapping(value="deleteuser")
public ModelAndView delete(int id){
userService.deleteUserById(id);
return new ModelAndView("redirect:/showuser.do");
}
//预修改
@RequestMapping(value="preupdateuser")
public ModelAndView preupdate(int id){
ModelAndView mav=new ModelAndView();
mav.addObject("user", userService.findUserById(id));
mav.setViewName("update_user");
return mav;
}
//修改
@RequestMapping(value="updateuser")
public ModelAndView update(User user){
userService.updateUser(user);
return new ModelAndView("redirect:/showuser.do");
}
}
5.4. 建立JSP文件
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>查询</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> </head> <body> <a href="showuser.do">查询</a> </body> </html>
list_user.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>查询</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> </head> <body> <a href="showuser.do">查询</a> </body> </html>
save_user.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>增添</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> </head> <body> <form action="saveuser.do"> 用户名：<input type="text" name="username" /> <br> <input type="submit" value="点击提交" /> </form> </body> </html>
update_user.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>改</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>
<form action="updateuser.do">
编号：<input type="text" value="${user.id}" name="id" />
<br>
用户名：<input type="text" value="${user.username}" name="username" />
<br>
<input type="submit" value="点击修改" />
</form>
</body>
</html>
5.5. 测试
右键index.jsp运行，
运行结果如下：
至此，SSM框架的整合就结束了。
工程下载地址：链接：https://pan.baidu.com/s/1fWE4zInmXshdew5zje_XHg
提取码：vnv4
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