SSM+vue基础项目从零开始练习后端搭建
创建后端项目1、搭建maven工程直接把项目建立在仓库的根目录即可，当然我们也可以创建两个仓库，一个前端项目仓库，一个后端项目仓库：删除父工程下的src调整工程结构2、调整工程结构创建子工程 system-adimin，删除掉父工程的src，将父工程的pom文件中的packaging改为pom，声明为一个父工程：3、配置tomcat4、加入以下依赖在父工程中加入以下依赖，进行依赖管理，每一个依赖的
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创建后端项目
1、搭建maven工程
直接把项目建立在仓库的根目录即可，当然我们也可以创建两个仓库，一个前端项目仓库，一个后端项目仓库：
删除父工程下的src
调整工程结构
2、调整工程结构
创建子工程 system-adimin，删除掉父工程的src，将父工程的pom文件中的packaging改为pom，声明为一个父工程：
3、配置tomcat
4、加入以下依赖
在父工程中加入以下依赖，进行依赖管理，每一个依赖的作用不在赘述，这是基本的ssm项目搭建
<?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>com.class</groupId>
<artifactId>ydl_wssm_2</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>system-adimin</module>
</modules>
<name>ruoyi</name>
<url>http://www.ydlclass.com</url>
<description>元动力管理系统</description>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>utf-8</project.build.sourceEncoding>
<javax.servlet.version>4.0.1</javax.servlet.version>
<spring.version>5.2.18.RELEASE</spring.version>
<spring-data-commons.version>2.6.0</spring-data-commons.version>
<aspectjweaver.version>1.9.6</aspectjweaver.version>
<lombok.version>1.18.22</lombok.version>
<jackson.version>2.13.1</jackson.version>
<validation-api.version>2.0.1.Final</validation-api.version>
<hibernate-validator>6.0.9.Final</hibernate-validator>
<logback-classic.version>1.2.6</logback-classic.version>
<commons-fileupload.version>1.3.3</commons-fileupload.version>
<druid.version>1.2.8</druid.version>
<mysql-connector-java.version>8.0.26</mysql-connector-java.version>
<mybatis.version>3.5.5</mybatis.version>
<mybatis-spring.version>2.0.6</mybatis-spring.version>
</properties>
<!--依赖管理-->
<dependencyManagement>
<dependencies>
<!--servlet-api-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${javax.servlet.version}</version>
</dependency>
<!--spring-webmvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>${spring-data-commons.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</dependency>
<!--jackson-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--数据校验-->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>${validation-api.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>${hibernate-validator}</version>
</dependency>
<!--logback日志-->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback-classic.version}</version>
</dependency>
<!--文件上传-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${commons-fileupload.version}</version>
</dependency>
<!-- 数据源-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!-- 数据区驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
</dependency>
<!-- mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- 整合spring和mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis-spring.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>public</id>
<name>aliyun nexus</name>
<url>https://maven.aliyun.com/repository/public</url>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
</project>
在子工程中加入以下依赖：
<?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">
<parent>
<artifactId>ydl-back</artifactId>
<groupId>com.ydl</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>ydl-backend</artifactId>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<!--servlet-api-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<!--spring-webmvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<!--jackson-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<!--数据校验-->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<!--logback日志-->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</dependency>
<!--文件上传-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
</dependency>
<!-- 数据源-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<!-- 数据区驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>
<!-- 整合spring和mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
</dependency>
</dependencies>
</project>web.xml的内容
<?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">
<!--容器初始化时，负责启动spring容器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:application.xml</param-value>
</context-param>
<!--注册DispatcherServlet，这是springmvc的核心，就是个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:application.xml</param-value>
</init-param>
<!--加载时先启动-->
<load-on-startup>1</load-on-startup>
</servlet>
<!--/ 匹配所有的请求；（不包括.jsp）-->
<!--/* 匹配所有的请求；（包括.jsp）-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>jdbc.properties
//注意根据自己数据库密码账号改
user=root
password=root
url=jdbc:mysql://127.0.0.1:3306/ydlclass?characterEncoding=utf8&serverTimezone=Asia/Shanghai
driverName=com.mysql.cj.jdbc.Driverapplication.xml，我们将spring和springmvc的配置统一在一个文件中，你也可以分开。
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
https://www.springframework.org/schema/tx/spring-tx.xsd
http://mybatis.org/schema/mybatis-spring
https://mybatis.org/schema/mybatis-spring.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 自动扫包 -->
<context:component-scan base-package="com.ydlclass"/>
<!--文件上传配置-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 请求的编码格式，必须和jSP的pageEncoding属性一致，以便正确读取表单的内容，默认为ISO-8859-1 -->
<property name="defaultEncoding" value="utf-8"/>
<!-- 上传文件大小上限，单位为字节（10485760=10M） -->
<property name="maxUploadSize" value="10485760"/>
<property name="maxInMemorySize" value="40960"/>
</bean>
<!-- 处理映射器 -->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<!-- 处理器适配器 -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
<!-- 视图解析器,本项目可以不使用视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/WEB-INF/page/"/>
<!-- 后缀 -->
<property name="suffix" value=".jsp"/>
<property name="order" value="10"/>
</bean>
<bean id="customObjectMapper" class="com.ydlclass.configuration.CustomObjectMapper"/>
<!--全局异常处理-->
<!-- <bean class="com.ydlclass.handler.GlobalExceptionResolver"/>-->
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<!-- 自定义Jackson的objectMapper -->
<property name="objectMapper" ref="customObjectMapper"/>
<!-- 自定义Jackson的objectMapper -->
<property name="supportedMediaTypes">
<list>
<value>text/plain;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!--处理静态资源，前后分离项目不需要处理静态资源-->
<!--扫描mapper文件-->
<!-- 让springmvc自带的注解生效 -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<mybatis:scan base-package="com.ydlclass.dao"/>
<!--数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="url" value="${url}"/>
<property name="driverClassName" value="${driverName}"/>
<property name="username" value="${user}"/>
<property name="password" value="${password}"/>
</bean>
<!-- 整个整合就是在围绕sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath:mapper/**/*.xml"/>
<property name="configuration">
<bean class="org.apache.ibatis.session.Configuration">
<property name="mapUnderscoreToCamelCase" value="true"/>
<property name="logPrefix" value="ydlclass_"/>
</bean>
</property>
</bean>
<!-- 注入事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 声明式事务 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<!-- the transactional semantics... -->
<tx:attributes>
<!-- all methods starting with 'get' are read-only -->
<tx:method name="get*" read-only="true" propagation="SUPPORTS"/>
<tx:method name="select*" read-only="true" propagation="SUPPORTS"/>
<!-- other methods use the default transaction settings (see below) -->
<tx:method name="update*" read-only="false" propagation="REQUIRED"/>
<tx:method name="delete*" read-only="false" propagation="REQUIRED"/>
<tx:method name="insert*" read-only="false" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
</beans>logback日志的配置文件 logback.xml：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<!-- 日志存放路径 -->
<property name="log.path" value="D://ydl/logs" />
<!-- 日志输出格式 -->
<property name="log.pattern" value="%d{HH:mm:ss.SSS} [%thread] %-5level %logger{20} - [%method,%line] - %msg%n" />
<!-- 控制台输出 -->
<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>${log.pattern}</pattern>
</encoder>
</appender>
<!-- 系统日志输出 -->
<appender name="file_info" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>${log.path}/sys-info.log</file>
<!-- 循环政策：基于时间创建日志文件 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- 日志文件名格式 -->
<fileNamePattern>${log.path}/sys-info.%d{yyyy-MM-dd}.log</fileNamePattern>
<!-- 日志最大的历史 60天 -->
<maxHistory>60</maxHistory>
</rollingPolicy>
<encoder>
<pattern>${log.pattern}</pattern>
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<!-- 过滤的级别 -->
<level>INFO</level>
<!-- 匹配时的操作：接收（记录） -->
<onMatch>ACCEPT</onMatch>
<!-- 不匹配时的操作：拒绝（不记录） -->
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<appender name="file_error" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>${log.path}/sys-error.log</file>
<!-- 循环政策：基于时间创建日志文件 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- 日志文件名格式 -->
<fileNamePattern>${log.path}/sys-error.%d{yyyy-MM-dd}.log</fileNamePattern>
<!-- 日志最大的历史 60天 -->
<maxHistory>60</maxHistory>
</rollingPolicy>
<encoder>
<pattern>${log.pattern}</pattern>
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<!-- 过滤的级别 -->
<level>ERROR</level>
<!-- 匹配时的操作：接收（记录） -->
<onMatch>ACCEPT</onMatch>
<!-- 不匹配时的操作：拒绝（不记录） -->
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!-- 系统模块日志级别控制 -->
<logger name="com.ydl" level="info" />
<!-- Spring日志级别控制 -->
<logger name="org.springframework" level="warn" />
<root level="info">
<appender-ref ref="console" />
<appender-ref ref="file_info" />
<appender-ref ref="file_error" />
</root>
</configuration> 创建CustomObjectMapper来配置jackson的序列化和反序列化：
public class CustomObjectMapper extends ObjectMapper {
public CustomObjectMapper() {
super();
//去掉默认的时间戳格式
configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
//设置为东八区
setTimeZone(TimeZone.getTimeZone("GMT+8"));
//设置日期转换yyyy-MM-dd HH:mm:ss
setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
// 设置输入:禁止把POJO中值为null的字段映射到json字符串中
configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
// 空值不序列化
setSerializationInclusion(JsonInclude.Include.NON_NULL);
// 反序列化时，属性不存在的兼容处理
getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
// 序列化枚举是以toString()来输出，默认false，即默认以name()来输出
configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
}
}5、构建目录结构并测试：
启动测试
http://localhost:8080/admin/test
如遇无法启动更换端口尝试
测试controller
@Controller
public class TestController {
@GetMapping("user")
@ResponseBody
public User test(){
return new User("tom",12);
}
@ResponseBody
public User test(){
return new User("tom",12);
}
static class User{
String username;
Integer age;
public User(String username, Integer age) {
this.username = username;
this.age = age;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
}启动成功
访问
http://localhost:8080/admin/user
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