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ssm项目搭建
2022-06-23 04:04:00 【php_kevlin】
编辑器:idea（已经下载配置好maven和tomcat）
整合的思路
- .1. 先搭建整合的环境
- .2. 先把Spring的配置搭建完成
- .3. 再使用Spring整合SpringMVC框架
- .4. 最后使用Spring整合MyBatis框架
1.配置maven
2.新建项目
3.导入依赖包，文件是pom.xml (编辑器会提示)
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>springmvc01</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<!-- spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.6.RELEASE</version>
</dependency>
<!-- jstl -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jstl-impl</artifactId>
<version>1.2</version>
</dependency>
<!-- servlet编译环境 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- jsp编译环境 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!-- FastJson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
<!-- pagehelper 分页 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.2</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<!-- spring整合mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<!-- mysql驱动依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.12</version>
</dependency>
<!-- Junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<!-- <include>*.xml</include>-->
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>
4.本质是tomcat运行网站的目录，所以新建如下目录
其中，web.xml内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0">
<!-- SpringMVC前端控制器 1.前端：接受所有请求 2.启动springMVC工厂 mvc.xml 3.springmvc流程调度 -->
<servlet>
<servlet-name>my_shine</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:mvc.xml</param-value>
</init-param>
<!-- 懒加载 饿加载 可选 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>my_shine</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 解决post请求中文乱码的过滤器 -->
<!-- 此时过滤器会进行：request.setCharactorEncoding("utf-8"); -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 启动spring -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
</web-app>
5.在web.xml中会引用springmvc的配置文件mvc.xml和spring的配置文件applicationContext.xml,内容如下：
<!--suppress ALL -->
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 注解扫描 扫描controller的注解，别的不扫描-->
<context:component-scan base-package="com.qf" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 注解驱动 -->
<mvc:annotation-driven>
<!-- 安装FastJson,转换器 -->
<mvc:message-converters>
<bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<!-- 声明转换类型:json -->
<property name="supportedMediaTypes">
<list>
<value>application/json</value>
</list>
</property>
<property name="features">
<array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
<!-- 避免循环引用 -->
<value>DisableCircularReferenceDetect</value>
<!-- 是否输出值为null的字段 -->
<value>WriteMapNullValue</value>
<!-- <value>QuoteFieldNames</value>-->
<!-- 数值字段如果为null,输出为0,而非null -->
<!-- <value>WriteNullNumberAsZero</value>-->
<!-- 字符类型字段如果为null,输出为"",而非null -->
<value>WriteNullStringAsEmpty</value>
<!-- List字段如果为null,输出为[],而非null -->
<value>WriteNullListAsEmpty</value>
<!-- Boolean字段如果为null,输出为false,而非null -->
<!-- <value>WriteNullBooleanAsFalse</value>-->
</array>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 视图解析器 作用：1.捕获后端控制器的返回值 =“hello” 2.解析：在返回值的前后 拼接 ==> "hello.jsp" -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/"></property>
<!-- 后缀 -->
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:default-servlet-handler />
</beans>
6.在上一步中，mvc.xml扫描controller的注解 ，在controller中设置路由和控制器对应,新建·userControlller.java·，目录如下图所示：
userController.java内容如下：
package com.qf.web;
import com.github.pagehelper.PageInfo;
import com.qf.bean.BaseResultBean;
import com.qf.entiry.User;
import com.qf.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import java.text.SimpleDateFormat;
import java.util.List;
@Controller //声明后端控制器
public class UserController {
@Autowired
@Qualifier("userServiceImpl")
private UserService userService;
@GetMapping("/userlist")
public ModelAndView queryUsers(HttpServletRequest request){
//service doGet doPost
int page = Integer.parseInt(request.getParameter("page"));
int size = Integer.parseInt(request.getParameter("size"));
List<User> userlists = userService.queryUsers(page,size);
PageInfo<User> pageInfo = new PageInfo<User>(userlists);
System.out.println("queryUsers"+userlists);
System.out.println("pageInfo"+pageInfo);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("users",userlists
);
modelAndView.setViewName("user");
//
return modelAndView;
}
@RequestMapping("/user")
@ResponseBody
public Object queryOne(Integer id)
{
System.out.println("query user id:"+id);
List<User> user = userService.queryOne(id);
System.out.println(user);
return user;
}
@PostMapping("/update")
public BaseResultBean updateUser(User user)
{
System.out.println("update user" + user);
userService.updateUser(user);
BaseResultBean baseResultBean = new BaseResultBean();
baseResultBean.setStatus(true);
baseResultBean.setMessage("成功");
return baseResultBean;
}
@RequestMapping("/add")
public BaseResultBean addUser(User user)
{
System.out.println("add user" + user);
userService.insertUser(user);
BaseResultBean baseResultBean = new BaseResultBean();
baseResultBean.setStatus(true);
baseResultBean.setMessage("成功");
return baseResultBean;
}
@RequestMapping("/deleteuser/{id}")
public BaseResultBean deleteUser(@PathVariable Integer id)
{
System.out.println("delete user" + id);
userService.deleteUser(id);
BaseResultBean baseResultBean = new BaseResultBean();
baseResultBean.setStatus(true);
baseResultBean.setMessage("成功");
return baseResultBean;
}
}
7.第五步中spring的配置文件applicationContext.xml如下所示
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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.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.xsd">
<!-- Datasource -->
<context:property-placeholder location="classpath:jdbc.properties" />
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init">
<property name="driverClassName" value="${jdbc.driverClass}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="60000"/>
<!-- 配置一个 连接在池中最小生存的时间 -->
<property name="minEvictableIdleTimeMillis" value="300000" />
</bean>
<!-- SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 注入dao-mapper文件信息,如果映射文件和dao接口 同包且同名，此配置可忽略 -->
<property name="mapperLocations">
<list>
<value>classpath:com/qf/dao/*.xml</value>
</list>
</property>
<!-- 自动扫描mybatis配置文件,打印sql日志 -->
<property name="configLocation" value="classpath:sqlLog.xml"></property>
<!-- 扫描entity包 使用别名 为dao-mapper文件中的实体 定义缺省包路径 如：<select id="queryAll" resultType="User"> 中User类可以不定义包 -->
<property name="typeAliasesPackage" value="com.qf.entiry"></property>
<!-- 分页 -->
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<props>
<!-- 设置页号，调整到合理的值 100页-->
<prop key="reasonable">true</prop>
</props>
</property>
</bean>
</array>
</property>
</bean>
<!-- 配置扫描Dao接口包，动态实现Dao接口，注入到ioc容器中-->
<!-- DAO MapperScannerConfigurer -->
<bean id="mapperScannerConfigurer9" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- dao接口所在的包 如果有多个包 也可以用逗号或者分号分割 -->
<property name="basePackage" value="com.qf.dao"></property>
<!-- 如果工厂中只有一个SqlSessionFactory的bean, 此配置可忽略 -->
<!-- <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>-->
</bean>
<!-- 读取注解位置 所有的类都要扫描，但是controller类不扫描 -->
<context:component-scan base-package="com.qf" use-default-filters="true">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 引入一个事务管理器，其中依赖DataSource,借以获得连接，进而控制事务逻辑 -->
<bean id="tx" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- @Transactional -->
<tx:annotation-driven transaction-manager="tx" />
</beans>
路虽远，行则将至
8.spring.xml会读取dao层,service层下面的注解，内容如下：
不知道原理，写不去了…
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