开发工具我使用的是eclipse，毕竟从学java开始就用这个，比较熟悉
maven其实就是管理jar包的东西，与普通ssm相比也不用配置其他的xml
ssm是spring+springmvc+mybatis（重点的东西）
数据库我两个都试过了，更换数据库只需要改那个properties里的东西就行了
然后把我的目录结构拿出来
其中红框内部的就是我们要写的，对了还有pom.xml
一。我的pom.xml：
1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 3 <modelVersion>4.0.0</modelVersion> 4 <groupId>Maven</groupId> 5 <artifactId>zxm02</artifactId> 6 <packaging>war</packaging> 7 <version>0.0.1-SNAPSHOT</version> 8 <name>zxm Maven Webapp</name> 9 <url>http://maven.apache.org</url> 10 <dependencies> 11 <dependency> 12 <groupId>junit</groupId> 13 <artifactId>junit</artifactId> 14 <version>3.8.1</version> 15 <scope>test</scope> 16 </dependency> 17 18 <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-dbcp2 --> 19 <dependency> 20 <groupId>org.apache.commons</groupId> 21 <artifactId>commons-dbcp2</artifactId> 22 <version>2.6.0</version> 23 </dependency> 24 <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging --> 25 <dependency> 26 <groupId>commons-logging</groupId> 27 <artifactId>commons-logging</artifactId> 28 <version>1.2</version> 29 </dependency> 30 31 <dependency> 32 <groupId>org.apache.commons</groupId> 33 <artifactId>commons-pool2</artifactId> 34 <version>2.6.2</version> 35 </dependency> 36 37 <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core --> 38 <dependency> 39 <groupId>com.fasterxml.jackson.core</groupId> 40 <artifactId>jackson-core</artifactId> 41 <version>2.9.9</version> 42 </dependency> 43 <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations --> 44 <dependency> 45 <groupId>com.fasterxml.jackson.core</groupId> 46 <artifactId>jackson-annotations</artifactId> 47 <version>2.9.9</version> 48 </dependency> 49 50 <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind --> 51 <dependency> 52 <groupId>com.fasterxml.jackson.core</groupId> 53 <artifactId>jackson-databind</artifactId> 54 <version>2.9.9</version> 55 </dependency> 56 57 58 <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --> 59 <dependency> 60 <groupId>org.mybatis</groupId> 61 <artifactId>mybatis</artifactId> 62 <version>3.4.6</version> 63 </dependency> 64 <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring --> 65 <dependency> 66 <groupId>org.mybatis</groupId> 67 <artifactId>mybatis-spring</artifactId> 68 <version>2.0.1</version> 69 </dependency> 70 71 <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop --> 72 <dependency> 73 <groupId>org.springframework</groupId> 74 <artifactId>spring-aop</artifactId> 75 <version>4.1.6.RELEASE</version> 76 </dependency> 77 <dependency> 78 <groupId>org.springframework</groupId> 79 <artifactId>spring-aspects</artifactId> 80 <version>4.1.6.RELEASE</version> 81 </dependency> 82 <dependency> 83 <groupId>org.springframework</groupId> 84 <artifactId>spring-beans</artifactId> 85 <version>4.1.6.RELEASE</version> 86 </dependency> 87 <dependency> 88 <groupId>org.springframework</groupId> 89 <artifactId>spring-context</artifactId> 90 <version>4.1.6.RELEASE</version> 91 </dependency> 92 <dependency> 93 <groupId>org.springframework</groupId> 94 <artifactId>spring-context-support</artifactId> 95 <version>4.1.6.RELEASE</version> 96 </dependency> 97 <dependency> 98 <groupId>org.springframework</groupId> 99 <artifactId>spring-core</artifactId> 100 <version>4.1.6.RELEASE</version> 101 </dependency> 102 <dependency> 103 <groupId>org.springframework</groupId> 104 <artifactId>spring-expression</artifactId> 105 <version>4.1.6.RELEASE</version> 106 </dependency> 107 <dependency> 108 <groupId>org.springframework</groupId> 109 <artifactId>spring-jdbc</artifactId> 110 <version>4.1.6.RELEASE</version> 111 </dependency> 112 <dependency> 113 <groupId>org.springframework</groupId> 114 <artifactId>spring-test</artifactId> 115 <version>4.1.6.RELEASE</version> 116 </dependency> 117 <dependency> 118 <groupId>org.springframework</groupId> 119 <artifactId>spring-tx</artifactId> 120 <version>4.1.6.RELEASE</version> 121 </dependency> 122 <dependency> 123 <groupId>org.springframework</groupId> 124 <artifactId>spring-web</artifactId> 125 <version>4.1.6.RELEASE</version> 126 </dependency> 127 <dependency> 128 <groupId>org.springframework</groupId> 129 <artifactId>spring-webmvc</artifactId> 130 <version>4.1.6.RELEASE</version> 131 </dependency> 132 133 <dependency> 134 <groupId>com.oracle</groupId> 135 <artifactId>ojdbc6</artifactId> 136 <version>12.1.0.1-atlassian-hosted</version> 137 </dependency> 138 139 <dependency> 140 <groupId>mysql</groupId> 141 <artifactId>mysql-connector-java</artifactId> 142 <version>5.1.30</version> 143 </dependency> 144 145 146 147 148 </dependencies> 149 150 151 152 153 <build> 154 <finalName>zxm02</finalName> 155 </build> 156 </project>
pox.xml的东西不要全部复制粘贴，比如工程的名字就不一样，复制dependencies里的就行，
这里说一下，ojdbc6的jar包，因为版权原因，maven不能下载，需要先下载到本地再在引用（非maven的小伙伴可跳过） 友情链接：https://blog.csdn.net/qq_38263715/article/details/80698499
导包成功后，我们进行第二步
二。我的web.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns="http://xmlns.jcp.org/xml/ns/javaee" 5 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" 6 id="WebApp_ID" version="3.1"> 7 8 9 10 <context-param> 11 <param-name>contextConfigLocation</param-name> 12 <param-value>classpath:app.xml</param-value> 13 </context-param> 14 <listener> 15 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 16 </listener> 17 18 <servlet> 19 <servlet-name>springmvc</servlet-name> 20 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 21 <init-param> 22 <param-name>contextConfigLocation</param-name> 23 <param-value>classpath:springmvc.xml</param-value> 24 </init-param> 25 <load-on-startup>1</load-on-startup> 26 </servlet> 27 28 29 <servlet-mapping> 30 <servlet-name>springmvc</servlet-name> 31 <url-pattern>*.do</url-pattern> 32 </servlet-mapping> 33 34 35 36 </web-app>
其实我这里只有两个东西：1是加载app.xml(大多数人写的是applicationContext.xml,我简写了)
2是加载springmvc.xml
下面那个<servlet-mapping>是拦截请求用的，他会拦截所有以.do结尾的url，这个可以自己选，*.什么都可以
既然要加载这两个文件，我们就要写出来，要不然会报错的
三。app.xml
1 <beans xmlns="http://www.springframework.org/schema/beans" 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns:mvc="http://www.springframework.org/schema/mvc" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:aop="http://www.springframework.org/schema/aop" 6 xmlns:tx="http://www.springframework.org/schema/tx" 7 xsi:schemaLocation="http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 9 http://www.springframework.org/schema/mvc 10 http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 11 http://www.springframework.org/schema/context 12 http://www.springframework.org/schema/context/spring-context-3.2.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> 17 18 19 <context:component-scan base-package="com.impl"></context:component-scan> 20 21 22 <context:property-placeholder location="classpath:mysql.properties"/> 23 <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" 24 destroy-method="close"> 25 <property name="driverClassName" value="${jdbc.driverClassName}" /> 26 <property name="url" value="${jdbc.url}" /> 27 <property name="username" value="${jdbc.username}" /> 28 <property name="password" value="${jdbc.password}" /> 29 </bean> 30 31 32 33 34 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 35 <property name="dataSource" ref="dataSource" /> 36 <property name="mapperLocations" value="classpath:resource/userMapper.xml" /> 37 </bean> 38 39 40 41 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 42 <property name="basePackage" value="com.dao"/> 43 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> 44 </bean> 45 46 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 47 <property name="dataSource" ref="dataSource"/> 48 </bean> 49 50 </beans>
这里配置了包扫描，连接数据库的，有几处用到了包路径的名字！！仔细改成你的路径（4处）
四。springmvc.xml
<?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:mvc="http://www.springframework.org/schema/mvc" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 开启controller注解支持 --> <!-- 注意事项请参考：http://jinnianshilongnian.iteye.com/blog/1762632 --> <!-- 扫描注解的，context是负责扫描的 --> <context:component-scan base-package="com.controller" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice" /> </context:component-scan> <!--使用mvc:annotation-driven代替上边注解映射器和注解适配器 配置 如果使用mvc:annotation-driven就不用配置上面的 RequestMappingHandlerMapping和RequestMappingHandlerAdapter--> <mvc:annotation-driven></mvc:annotation-driven> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!--配置jsp路径的前缀 --> <property name="prefix" value="/WEB-INF/view/"/> <!--配置jsp路径的后缀 --> <property name="suffix" value=".jsp"/> </bean> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>app/json;charset=UTF-8</value> </list> </property> </bean> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <!--json视图拦截器，读取到@ResponseBody的时候去配置它 --> <ref bean="mappingJacksonHttpMessageConverter" /> </list> </property> </bean> </beans>
这里配置了controller的扫描和一个试图解析器，就是controller不用@ResponseBody时，返回页面的时候，会用到他，加一个前缀，加一个后缀
下面那俩配完了就允许返回java类的数据
五。这两个xml我们写完了，我们再连接一个数据库
db.properties（oracle）
jdbc.driverClassName=oracle.jdbc.driver.OracleDriver
jdbc.url=jdbc:oracle:thin:@localhost:1521:orcl
jdbc.username=zxm
jdbc.password=zxm
mysql.properties(mysql)
1 jdbc.driverClassName=com.mysql.jdbc.Driver 2 jdbc.url=jdbc:mysql://localhost:3306/database01useUnicode=true&characterEncoding=UTF8 3 jdbc.username=root 4 jdbc.password=root
我也不打码了，这个数据库，用户名，密码要改成你们的
mysql的我加了一个转码的
六。下一步是controller dao entity service service_impl usermapper.xml
这几个分别是 控制层 dao层 实体类 服务层 实现服务层 和 写语句的表
0.首先建一个实体类（要与数据库里的属性相对应）
1.controller 被。do拦截的页面先来这里（a是我测试用的）
2.然后走service的方法
3.然后impl实现这个接口
4.再去找dao
5.dao里的名字与usermapper.xml的id相对应，去找usermapper.xml
6.至此，后台的东西就写完了，框架也搭完了，去写一个jsp文件，看好不好使
7.成功
改错的时候，尽量记住都改了哪里，不然一个项目可能越改错的越多。。。。
祝福大家都可以一次配成功0.0 yzbx12138