SpringMVC-02
SSM 框架集成与测试
环境配置
IDEA 下创建项⽬
创建Maven对应的Web项⽬配置 pom.xml
2.1. 修改 JDK 版本
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
2.2. 添加坐标依赖
<dependencies>
<!-- junit 测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- spring 核⼼jar -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.4.RELEASE</version>
</dependency>
<!-- spring 测试jar -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.2.4.RELEASE</version>
</dependency>
<!-- spring jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.4.RELEASE</version>
</dependency>
<!-- spring事物 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.2.4.RELEASE</version>
</dependency>
<!-- aspectj切⾯编程的jar -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.5</version>
</dependency>
<!-- c3p0 连接池,连接数据库 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.3</version>
</dependency>
<!-- 添加mybatis与Spring整合的核⼼包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.3</version>
</dependency>
<!-- mysql 驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
<!-- ⽇志打印相关的jar -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.2</version>
</dependency>
<!-- 分⻚插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.10</version>
</dependency>
<!-- spring web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.4.RELEASE</version>
</dependency>
<!-- spring mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.4.RELEASE</version>
</dependency>
<!-- web servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
</dependency>
<!-- 添加json 依赖jar包（注意版本问题） -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.10.0</version>
</dependency>
<!-- commons-fileupload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
2.3. 设置资源⽬录和插件
<build>
<finalName>ssm</finalName>
<!--
Maven 项⽬:如果源代码(src/main/java)存在xml、properties、tld 等⽂件
Maven 默认不会⾃动编译该⽂件到输出⽬录,如果要编译源代码中xml properties tld 等⽂件
需要显式配置 resources 标签
-->
<resources>
<resource>
<directory>src/main/resources</directory>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
<include>**/*.tld</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
<plugins>
<!-- 编译环境插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- jetty插件 -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.4.27.v20200227</version>
<configuration>
<scanIntervalSeconds>10</scanIntervalSeconds>
<!-- 设置端⼝ -->
<httpConnector>
<port>8080</port>
</httpConnector>
<!-- 设置项⽬路径 -->
<webAppConfig>
<contextPath>/ssm</contextPath>
</webAppConfig>
</configuration>
</plugin>
</plugins>
</build>
- 配置 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0"
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">
<!-- 启动spring容器-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!-- 设置监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listenerclass>
</listener>
<!-- 编码过滤 utf-8 -->
<filter>
<description>char encoding filter</description>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filterclass>
<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请求分发器 -->
<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:servlet-context.xml</param-value>
</init-param>
<!-- 表示启动容器时初始化该Servlet -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<!-- 这是拦截请求， "/"代表拦截所有请求，"*.do"拦截所有.do请求 -->
<url-pattern>/</url-pattern>
<!--<url-pattern>*.do</url-pattern>-->
</servlet-mapping>
</web-app>
- 配置 servlet-context.xml
在项⽬的 src/main/resources 下创建 servlet-context.xml ⽂件， 内容如下
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
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">
<!-- 开启扫描器 -->
<context:component-scan base-package="com.wedu.ssm.controller" />
<!-- mvc 注解驱动 并添加json ⽀持 -->
<mvc:annotation-driven>
<mvc:message-converters>
<!-- 返回信息为字符串时 处理 -->
<bean
class="org.springframework.http.converter.StringHttpMessageConverter"/>
<!-- 将对象转换为json 对象 -->
<bean
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 使⽤默认的 Servlet 来响应静态⽂件 -->
<mvc:default-servlet-handler/>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!-- 前缀：在WEB-INF⽬录下的jsp⽬录下 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 后缀：以.jsp结尾的资源 -->
<property name="suffix" value=".jsp"/>
</bean>
<!-- ⽂件上传 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 允许⽂件上传的最⼤尺⼨ -->
<property name="maxUploadSize">
<value>104857600</value>
</property>
<!--
设置⽂件放⼊临时⽂件夹的最⼤⼤⼩限制。
此值是阈值，低于此值，则保存在内存中，如⾼于此值，则⽣成硬盘上的临时⽂件。
-->
<property name="maxInMemorySize">
<value>4096</value>
</property>
</bean>
</beans>
- 配置 spring.xml
在项⽬的 src/main/resources 下创建 spring.xml ⽂件， 内容如下
<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
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">
<!-- 扫描基本包 -->
<context:component-scan base-package="com.xxxx.ssm" >
<!-- context:exclude-filter标签：排除对某个注解的扫描 （过滤controller层） -->
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller"
/>
</context:component-scan>
<!-- 加载properties 配置⽂件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- aop -->
<aop:aspectj-autoproxy />
<!-- 配置c3p0 数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- 配置事务管理器 -->
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 设置事物增强 -->
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
<!-- aop 切⾯配置 -->
<aop:config>
<aop:pointcut id="servicePointcut"
expression="execution(* com.xxxx.ssm.service..*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="servicePointcut" />
</aop:config>
<!-- 配置 sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis.xml" />
<property name="mapperLocations" value="classpath:com/xxxx/ssm/mapper/*.xml"
/>
</bean>
<!-- 配置扫描器 -->
<bean id="mapperScanner"
class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描com.xxxx.ssm.dao这个包以及它的⼦包下的所有映射接⼝类 -->
<property name="basePackage" value="com.xxxx.ssm.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
</beans>
- 配置 mybatis.xml
在项⽬的 src/main/resources 下创建 mybatis.xml ⽂件， 内容如下
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="com.xxxx.ssm.po"/>
</typeAliases>
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
</plugins>
</configuration>
- 配置 db.properties
在项⽬的 src/main/resources 下创建 db.properties ⽂件，内容如下(mysql 创建数据库ssm)
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?
useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false
jdbc.username=root
jdbc.password=root
- 添加 log4j.properties
在项⽬的 src/main/resources 下创建 log4j.properties ⽂件，内容如下
log4j.rootLogger=DEBUG, Console
# Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
启动，查看配置环境是否有问题
添加源代码
- 添加UserMapper.xml 映射⽂件
UserMapper.xml ⽂件，提供select 查询标签配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xxxx.ssm.dao.UserDao">
<select id="queryUserByUserId" parameterType="int"
resultType="com.xxxx.ssm.po.User">
select user_id as userId,user_name as userName,user_pwd as userPwd
from tb_user
where user_id = #{
userId}
</select>
</mapper>
- 添加 User.java
在 po 包下创建 JavaBean ⽂件 User.java (数据库字段对应如下)
private Integer userId;
private String userName;
private String userPwd;
private String userEmail;
private Date createDate;
private Date updateDate;
/**
set get ⽅法省略
**/
- 添加UserDao.java 接⼝
dao 包下创建 UserDao.java ⽂件，提供对应的⽤户详情查询功能
public interface UserDao {
User queryUserByUserId(Integer userId);
}
- 添加 UserService.java
service 包下创建UserService.java ⽂件，提供⽤户详情查询⽅法
@Service
public class UserService {
@Autowired
private UserDao userDao;
public User queryUserByUserId(Integer userId){
return userDao.queryUserByUserId(userId);
}
}
- 添加 HelloController.java
.controller 包下创建 HelloController.java ⽂件
@Controller
public class HelloController {
// 注⼊userService
@Autowired
private UserService userService;
@RequestMapping("/hello")
public ModelAndView hello(){
ModelAndView mv = new ModelAndView();
// 调⽤service 层查询⽅法
User user = userService.queryUserByUserId(1);
mv.addObject("user", user);
mv.setViewName("hello");
return mv;
}
}
- 添加 hello.jsp 视图⽂件，然后Idea 下配置 jetty 启动命令
在src/main/webapp/WEB-INF 创建jsp ⽬录，并在该⽬下创建hello.jsp ，展示查询的⽤户信息
<body>
欢迎你，${
user.userName}
</body>
