java企业级权限系统开发-环境搭建

曾几何时，搭过无数遍的SSM整合框架，遇到了springboot之后我是真的厌烦了，不过我还是再搭建了一遍。

1. 创建maven工程

不再赘述。

2. 引入依赖

关于spring，我们要管理bean，获取spring容器，那么spring-beans和spring-context是必不可的：

<properties>
    <springframework.version>4.3.10.RELEASE</springframework.version>
</properties>

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-beans</artifactId>
  <version>${springframework.version}</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>${springframework.version}</version>
</dependency>

要用springMVC：

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-web</artifactId>
  <version>${springframework.version}</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>${springframework.version}</version>
</dependency>

jdbc驱动：

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>${springframework.version}</version>
</dependency>

用mybatis来管理sql：

<!--mybatis-->
  <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.0</version>
  </dependency>
  <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
  </dependency>

连接池也必不可少：

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.0.20</version>
</dependency>

mysql数据库：

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.30</version>
</dependency>

lombok神器，怎么能不用？

<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.16.12</version>
</dependency>

在json处理上，jackson用的比较多,fastJson有bug？

<dependency>
  <groupId>com.fasterxml.jackson.datatype</groupId>
  <artifactId>jackson-datatype-guava</artifactId>
  <version>2.5.3</version>
</dependency>

日志处理，用最好用的logback:速度快、更丰富的文档、配置文件热加载、自动压缩日志文件等。比log4j好。

<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-core</artifactId>
  <version>1.1.9</version>
</dependency>
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-classic</artifactId>
  <version>1.1.9</version>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
  <version>1.7.5</version>
</dependency>

3. web.xml

这里是入口：spring的上下文监听器、加载applicationContext.xml，这是spring的核心配置。还要配置springMVC的前端控制器DispatcherServlet；要配置编码；以及druid的配置。

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!--spring bean 配置文件所在目录-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <!--spring mvc配置-->
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
<!--/可以匹配到/login,但是匹配不到/login.jsp-->

  <!--encoding-->
  <filter>
    <filter-name>encodingFilter</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>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>

  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

  <!--druid-->
  <servlet>
    <servlet-name>DruidStatServlet</servlet-name>
    <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
    <init-param>
      <param-name>loginUsername</param-name>
      <param-value>druid</param-value>
    </init-param>
    <init-param>
      <param-name>loginPassword</param-name>
      <param-value>druid</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>DruidStatServlet</servlet-name>
    <url-pattern>/sys/druid/*</url-pattern>
  </servlet-mapping>
  <filter>
    <filter-name>DruidWebStatFilter</filter-name>
    <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
    <init-param>
      <param-name>exlusions</param-name>
      <param-value>*.js,*.css,*.jpg,*.png,*.ico,*.gof,/sys/druid/*</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>DruidWebStatFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

4. applicationContext.xml

这个就是spring的核心配置，在容器启动的时候就要进行加载。

这里主要是配置数据源dataSource，sqlSessionFactory以及事务transactionManager。

<?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: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/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="ignoreUnresolvablePlaceholders" value="true"/>
        <property name="locations">
            <list>
                <value>classpath:settings.properties</value>
            </list>
        </property>
    </bean>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="driverClassName" value="${db.driverClassName}"/>
        <property name="url" value="${db.url}"/>
        <property name="username" value="${db.username}"/>
        <property name="password" value="${db.password}"/>
        <property name="initialSize" value="3"/>
        <property name="minIdle" value="3"/>
        <property name="maxActive" value="20"/>
        <property name="maxWait" value="60000"/>
        <property name="filters" value="stat,wall"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.njupt.dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--tx-->
    <tx:annotation-driven transaction-manager="transactionManager" />

    <!--druid-->
    <bean id="stat-filter" class="com.alibaba.druid.filter.stat.StatFilter">
        <property name="slowSqlMillis" value="3000"/><!--超过3秒说明是慢sql-->
        <property name="logSlowSql" value="true"/>
        <property name="mergeSql" value="true"/>
    </bean>
    <bean id="wall-filter" class="com.alibaba.druid.wall.WallFilter">
        <property name="dbType" value="mysql"/>
    </bean>



</beans>

5. 数据源配置文件settings.properties

db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql://127.0.0.1:3306/jimin?characterEncoding=utf-8
db.username=root
db.password=123456

6. mybatis-config.xml

这里可以对mybatis本身默认的一些设置进行修改。也可以不写。

<?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>
    <settings>
        <setting name="safeRowBoundsEnabled" value="true"/>
        <setting name="cacheEnabled" value="false"/>
        <setting name="useGeneratedKeys" value="true"/>
    </settings>
</configuration>

7. spring-servlet.xml

这里主要是配置SpringMVC：

<?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:contect="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/context
        http://www.springframework.org/sche ma/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--springmvc的bean就可以被管理了-->
    <contect:annotation-config />

    <!--启动注解驱动springmvc-->
    <mvc:annotation-driven />

    <!--包扫描-->
    <contect:component-scan base-package="com.njupt.controller"/>

    <!--确定返回格式-->
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>

    <!--返回json的时候处理-->
    <bean id="jsonView" class="org.springframework.web.servlet.view.json.MappingJackson2JsonView"/>

    <!--返回jsp的时候处理-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/views/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

8. logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds">
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
        </encoder>
    </appender>

    <!--    <appender name="permission" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${catalina.home}/logs/permission.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBaseRollingPolicy">
            <FileNamePattern>${catalina.home}/logs/permission.%d{yyyy-MM-dd}.log.gz</FileNamePattern>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%d{yyyy-MM-dd HH-mm-ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
        </layout>
    </appender>-->

    <!--<logger name>-->

    <!--</logger>-->
    <!--TRACE < DEBUG < INFO < WARN < ERROR-->
    <root level="INFO">
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>

觉得头大？？？http://www.imooc.com/article/19005

9. 启动测试

在controller中：

@Controller
@RequestMapping("/test")
@Slf4j
public class TestController {
    @RequestMapping("/hello")
    @ResponseBody
    public String hello(){
        log.info("hello");
        return "hello";
    }
}

在dao中要假装写一个类：TestDao，里面烧都不写。

在mapper目录下写一个TestMapper.xml，来防止报错。

<?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.njupt.dao.TestDao" >


</mapper>

配置环境，然后启动。