spring项目篇2---编写配置文件--688IT编程网

spring项⽬篇2----编写配置⽂件

我们接下来开始编写我们的权限系统，以便进⼀步熟悉SSM，接下来按照第⼀篇起⼀个maven项⽬，项⽬简介如下，接下来看⼀下配置⽂件

<!DOCTYPE web-app PUBLIC

"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"java.sun/dtd/web-app_2_3.dtd" >

<web-app xmlns="java.sun/xml/ns/javaee"

xmlns:xsi="/2001/XMLSchema-instance"

xsi:schemaLocation="java.sun/xml/ns/javaee

java.sun/xml/ns/javaee/web-app_3_0.xsd"

version="3.0"

metadata-complete="false">

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

<welcome-file-list>

<welcome-file>index.html</welcome-file>

<welcome-file>index.htm</welcome-file>

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

</welcome-file-list>

<servlet-name>SpringMvc</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>l</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>SpringMvc</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

<filter-name>CharacterEncoding</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>CharacterEncoding</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

</web-app>

接下来看⼀下spring配置⽂件

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="/schema/beans"

xmlns:xsi="/2001/XMLSchema-instance"

xmlns:context="/schema/context"

xsi:schemaLocation="/schema/beans

/schema/beans/spring-beans.xsd /schema/context /schema/context/spring-context.xsd">

<context:component-scan base-package="com.yang"/>

</beans>

数据库属性⽂件

jdbc.sql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/promission?characterEncoding=utf-8

jdbc.username=root

jdbc.password=mysql

mybatis的配置⽂件

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="/schema/beans"

xmlns:xsi="/2001/XMLSchema-instance"

xmlns:context="/schema/context"

xmlns:aop="/schema/aop"

xmlns:tx="/schema/tx"

xsi:schemaLocation="/schema/beans

/schema/beans/spring-beans.xsd

/schema/context

/schema/context/spring-context.xsd

/schema/aop

/schema/aop/spring-aop.xsd

/schema/tx

/schema/tx/spring-tx.xsd

<context:property-placeholder location="classpath:db.properties"/>

</bean>

</bean>

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

</bean>

</bean>

</beans>

springMvc配置⽂件

<?xml version="1.0" encoding="UTF-8" ?>

bigdecimal格式化两位小数

<beans xmlns="/schema/beans"

xmlns:xsi="/2001/XMLSchema-instance"

xmlns:context="/schema/context"

xmlns:mvc="/schema/mvc"

xsi:schemaLocation="/schema/beans

/schema/beans/spring-beans.xsd

/schema/context

/schema/context/spring-context.xsd

/schema/mvc

/schema/mvc/spring-mvc-4.0.xsd

<mvc:annotation-driven />

<mvc:default-servlet-handler />

</bean>

</property>

</bean>

</beans>

sqlMapConfig

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE configuration

PUBLIC "-////DTD Config 3.0//EN"

"/dtd/mybatis-3-config.dtd">

</settings>

</typeAliases>

</plugins>

</configuration>

最后看⼀下可以根据数据库帮助我们⽣成mapper接⼝以及xml⽂件的插件的配置

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE generatorConfiguration

PUBLIC "-////DTD MyBatis Generator Configuration 1.0//EN"

"/dtd/mybatis-generator-config_1_0.dtd">

<!--targetRuntime有两个参数⼀个是MyBatis3Simple只⽣成简单的增删改查，另外⼀个会⽣成很多操作，

但那些基本都是我们⾃⼰编写，⼀次⼀般只使⽤MyBatis3Simple-->

<!-- ⾃动识别数据库关键字，

默认false，如果设置为true，

根据SqlReservedWords中定义的关键字列表；

⼀般保留默认值，

遇到数据库关键字（Java关键字），

使⽤columnOverride覆盖 -->

<!-- beginningDelimiter和endingDelimiter：指明数据库的⽤于标记数据库对象名的符号，

⽐如ORACLE就是双引号，MYSQL默认是`反引号； -->

</commentGenerator>

<jdbcConnection driverClass="sql.jdbc.Driver" connectionURL="jdbc:mysql:///promission" userId="root" password="mysql"/> <!-- java类型处理器⽤于处理数据库中的类型到Java中的类型，

默认使⽤JavaTypeResolverDefaultImpl；

注意⼀点，默认会先尝试使⽤Integer，Long，Short等来对应DECIMAL和NUMERIC数据类型； -->

<!-- true：使⽤BigDecimal对应DECIMAL和 NUMERIC数据类型 false：默认,

scale>0;length>18：使⽤BigDecimal;

scale=0;length[10,18]：使⽤Long；

scale=0;length[5,9]：使⽤Integer；

scale=0;length<5：使⽤Short； -->

</javaTypeResolver>

<!--

配置domain⽣成策略

targetProject：把⾃动⽣成的domain放在哪个⼯程⾥⾯

targetPackage：哪个包下

-->

<!-- for MyBatis3/MyBatis3Simple

⾃动为每⼀个⽣成的类创建⼀个构造⽅法，

构造⽅法包含了所有的field；⽽不是使⽤setter； -->

<!-- for MyBatis3 / MyBatis3Simple

是否创建⼀个不可变的类，如果为true，

那么MBG会创建⼀个没有setter⽅法的类，

取⽽代之的是类似constructorBased的类 -->

<!-- 设置是否在getter⽅法中，

对String类型字段调⽤trim()⽅法 -->

</javaModelGenerator>

<!--

配置l的⽣成策略

targetPackage：把⾃动⽣成的mapper放在哪个⼯程⾥⾯

targetProject：哪个包下

-->

<sqlMapGenerator targetPackage="com.yang.mapper"

targetProject="src/main/java">

<!-- 在targetPackage的基础上，

根据数据库的schema再⽣成⼀层package，

最终⽣成的类放在这个package下，默认为false -->

</sqlMapGenerator>

</javaClientGenerator>

</context>

</generatorConfiguration>

⽂件结尾，我们看⼀下maven的项⽬依赖

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="/POM/4.0.0" xmlns:xsi="/2001/XMLSchema-instance"

xsi:schemaLocation="/POM/4.0.0 /xsd/maven-4.0.0.xsd">

<artifactId>promissionPro</artifactId>

<version>1.0-SNAPSHOT</version>

<name>promissionPro Maven Webapp</name>

<url>ample</url>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<mavenpiler.source>1.8</mavenpiler.source>

<mavenpiler.target>1.8</mavenpiler.target>

<org.springframework.version>5.2.3.RELEASE</org.springframework.version>

&batis.version>3.5.3</batis.version>

</properties>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

</dependency>

<dependency>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

</dependency>

<groupId>javax.servlet</groupId>

<artifactId>servlet-api</artifactId>

<scope>provided</scope>

</dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

</dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid</artifactId>

</dependency>

<dependency>

<groupId>commons-lang</groupId>

<artifactId>commons-lang</artifactId>

</dependency>