图文讲解idea创建springmvc+mavem+mybatis的web工程案例

原来一直使用eclipse，研究了三天idea，决定自己试试，以下观点纯属个人理解，如有不对欢迎前辈指点。下面上菜

一.使用idea创建maven工程

（个人理解idea中的新建project就是指定eclipse中的workspace，个人比较习惯把所有的工程都放到同一个路径下，所以新建了一个文件夹叫ideaSpace，之后所有新建project之     前都在该文件夹下新建一个对应项目名称的文件夹，这样感觉比较整洁。）

1.file-new-project

2.选择maven

3.设置groupid

4.选择maven路径

5.项目名称

顺利生成项目：

不过很明显，项目结构与我们想象的不太相同，缺少的java目录，下面加上java目录。

 选择modules,在main文件夹上右击选择new folders,输入名称java

选择java文件夹，点击sources，将Java设置为源码文件夹；选择resources文件夹，点击resources。

至此，工程创建完毕。

二.引入mybatis工具包，生成文件

1.pom.xml中引入插件

2.在resouorces文件夹下新建generatorConfig.xml（直接new-file 输入名车）

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <classPathEntry location="E:\文档资料\常用lib\mysql-connector-java-5.1.25-bin.jar"/> <context id="testTables" targetRuntime="MyBatis3" > <commentGenerator> <!-- 是否去除自动生成的注释 true：是 ： false:否 --> <property name="suppressAllComments" value="true" /> </commentGenerator> <!--数据库连接的信息：驱动类、连接地址、用户名、密码 --> <!--<jdbcConnection driverClass="${jdbc.driver}"--> <!--connectionURL="${jdbc.url}"--> <!--userId="${jdbc.username}"--> <!--password="${jdbc.password}">--> <!--</jdbcConnection>--> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1:3306/test?characterEncoding=UTF-8" userId="root" password="root"> </jdbcConnection> <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和 NUMERIC 类型解析为java.math.BigDecimal --> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- targetProject:生成PO类的位置 --> <javaModelGenerator targetPackage="com.springmvc.entity" targetProject="src\main\java"> <!-- enableSubPackages:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="false" /> <!-- 从数据库返回的值被清理前后的空格 --> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- targetProject:mapper映射文件生成的位置 --> <sqlMapGenerator targetPackage="com.springmvc.mapper" targetProject="src\main\resources"> <!-- enableSubPackages:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="false" /> </sqlMapGenerator> <!-- targetPackage：mapper接口生成的位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.springmvc.dao" targetProject="src\main\java"> <!-- enableSubPackages:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="false" /> </javaClientGenerator> <!-- 指定数据库表 --> <table tableName="user" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> <!-- 有些表的字段需要指定java类型 <table schema="" tableName=""> <columnOverride column="" javaType="" /> </table> --> </context> </generatorConfiguration> 3.选择mavenProject窗口，选择mybatis-generator运行

如果没有异常，应该会生成对应的java文件以及xml文件。（包括entity，dao，mapper）

三.书写工程

1.pom.xml

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.com.demo</groupId> <artifactId>springmvc</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>springmvc Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!-- spring版本号 --> <spring.version>4.1.1.RELEASE</spring.version> <!-- mybatis版本号 --> <mybatis.version>3.2.6</mybatis.version> <!-- log4j日志文件管理包版本 --> <slf4j.version>1.7.7</slf4j.version> <log4j.version>1.2.17</log4j.version> <!-- jackson包版本 --> <jackson.version>2.5.0</jackson.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!--单元测试依赖 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <!-- 表示开发的时候引入，发布的时候不会加载此包 --> <scope>test</scope> </dependency> <!--spring单元测试依赖 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> <!-- springMVC核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <!-- spring核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.0.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- AOP begin --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.7.4</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.7.4</version> </dependency> <dependency> <groupId>cglib</groupId> <artifactId>cglib</artifactId> <version>3.1</version> </dependency> <!-- AOP end --> <!-- mybatis核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!--mybatis spring 插件 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!-- Mysql数据库驱动包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.34</version> </dependency> <!-- connection pool --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.5</version> <scope>runtime</scope> </dependency> <!-- 日志文件管理包 --> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <!--servlet--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 映入JSON --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-core-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</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> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>net.sf.json-lib</groupId> <artifactId>json-lib</artifactId> <version>2.1</version> <classifier>jdk15</classifier> </dependency> <!-- 用dom4j解析xml文件 --> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> <!-- ehcache --> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-core</artifactId> <version>2.6.9</version> </dependency> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-web</artifactId> <version>2.0.4</version> </dependency> <!-- 上传组件包 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.9</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-collections4</artifactId> <version>4.0</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.3.2</version> </dependency> <!-- commons-beanutils --> <dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.7.0</version> <exclusions> <exclusion> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> </exclusion> </exclusions> </dependency> <!-- freemarker --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.19</version> </dependency> <!-- dom4j读取XML --> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> </dependencies> <build> <finalName>springmvc</finalName> <plugins> <!--mybatis 逆向工程插件--> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <configuration> <verbose>true</verbose> <overwrite>true</overwrite> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> <!-- 解决Maven项目编译后classes文件中没有.xml问题 --> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> </build> </project> 2.resources文件夹下新建dbconfig.properties

3.新建目录如下

4.resources文件夹下新建log4j.properties

#日志输出级别 log4j.rootLogger=debug,stdout,D,E #设置stdout的日志输出控制台 log4j.appender.stdout=org.apache.log4j.ConsoleAppender #输出日志到控制台的方式，默认为System.out log4j.appender.stdout.Target = System.out #设置使用灵活布局 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout #灵活定义输出格式 log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} -[%p] method:[%c (%rms)] - %m%n #每天产生一个日志文件 log4j.appender.D=org.apache.log4j.DailyRollingFileAppender #设置的输出日志 log4j.appender.D.File=E:/ideaSpace/springmvc/logs/log.txt #设置的日志最大限制 log4j.appender.D.MaxFileSize=6000KB #最多只保存20个备份文件 log4j.appender.D.MaxBackupIndex=20 #输出INFO级别以上的日志 og4j.appender.D.Threshold=debug log4j.appender.D.Append = true log4j.appender.D.ImmediateFlush = true #log4j.appender.D.DatePattern ='.'yyyy-MM-dd #设置使用灵活布局 log4j.appender.D.layout=org.apache.log4j.PatternLayout #灵活定义输出格式 log4j.appender.D.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} -[%p] method:[%l (%rms)] - %m%n log4j.appender.E = org.apache.log4j.DailyRollingFileAppender log4j.appender.E.File =E:/ideaSpace/springmvc/logs/error/error.txt log4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR #log4j.appender.E.DatePattern = '_'yyyyMMdd'.log' log4j.appender.E.layout = org.apache.log4j.PatternLayout log4j.appender.E.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss,SSS} -[%p] method:[%l (%rms)] - %m%n

5.resources文件夹下新建spring-context.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:p="http://www.springframework.org/schema/p" 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:jdbc="http://www.springframework.org/schema/jdbc" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true"> <description>Spring Configuration</description> <!-- 开启注解处理器 --> <context:annotation-config/> <!-- 开启组件自动扫描；使用Annotation自动注册Bean，解决事物失效问题：在主容器中不扫描@Controller注解，在SpringMvc中只扫描@Controller注解。 --> <context:component-scan base-package="com.springmvc"><!-- base-package 如果多个，用“,”分隔 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--<!– 自动扫描 –>--> <!--<context:component-scan base-package="com.vitelon.v"/>--> <!--引入属性文件 --> <context:property-placeholder location="classpath:dbconfig.properties" /> <!-- dataSource 配置数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 基本属性 url、user、password --> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="1" /> <property name="minIdle" value="1" /> <property name="maxActive" value="20" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="validationQuery" value="SELECT 'x'" /> <property name="testWhileIdle" value="true" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <!-- 打开PSCache，并且指定每个连接上PSCache的大小 --> <property name="poolPreparedStatements" value="false" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> </bean> <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:com/springmvc/mapper/*.xml"/> </bean> <!-- DAO接口所在包名，Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.springmvc.dao"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!-- 对dataSource 数据源进行事务管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 事务管理 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 对insert,create,update,modify,delete,remove 开头的方法进行事务管理,只要有异常就回滚 --> <tx:method name="insert*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="update*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="modify*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="delete*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="remove*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <!-- find,get,select,count开头的方法,开启只读,提高数据库访问性能 --> <tx:method name="find*" read-only="true" /> <tx:method name="get*" read-only="true" /> <tx:method name="select*" read-only="true" /> <tx:method name="count*" read-only="true" /> <!-- 对其他方法 使用默认的事务管理 --> <tx:method name="*" /> </tx:attributes> </tx:advice> <!-- 事务 aop 配置 --> <aop:config> <aop:pointcut id="serviceMethods" expression="execution(public * com.springmvc.service..*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods" /> </aop:config> <!-- 配置使Spring采用CGLIB代理 --><!-- 开启基于@AspectJ切面的注解处理器 --> <aop:aspectj-autoproxy proxy-target-class="true" /> <!-- 配置 Annotation 驱动，扫描@Transactional注解的类定义事务 --> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> </beans> 6.resources文件夹下新建spring-mvc.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:p="http://www.springframework.org/schema/p" xmlns:context="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-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <description>Spring MVC Configuration</description> <!-- 启用spring mvc 注解, 默认的注解映射的支持 --> <mvc:annotation-driven/> <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 --> <context:component-scan base-package="com.springmvc"/> <bean id="localeResolver" class="org.springframework.web.servlet.i18n.CookieLocaleResolver"> <property name="defaultLocale" value="zh_CN" /> </bean> <mvc:interceptors> <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" /> </mvc:interceptors> <!-- 支持返回json(避免IE在ajax请求时，返回json出现下载文件 ) --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>text/json;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> </bean> <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射， 配置一个基于注解的定制的WebBindingInitializer，解决日期转换问题，方法级别的处理器映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="cacheSeconds" value="0" /> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 --> </list> </property> </bean> <!-- 默认的视图解析器 --> <bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:order="3"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="contentType" value="text/html" /> <property name="prefix" value="/WEB-INF/page/"/> <property name="suffix" value=".jsp"/><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 --> </bean> <!-- 配置springMVC处理上传文件的信息 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8" /> <property name="maxUploadSize" value="10485760000" /> <property name="maxInMemorySize" value="40960" /> </bean> <!-- Bean解析器,级别高于默认解析器,寻找bean对象进行二次处理 --> <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0"/> <!-- 对静态资源文件的访问， 将无法mapping到Controller的path交给default servlet handler处理 --> <mvc:default-servlet-handler /> <!-- 静态资源映射 --> <!--<mvc:resources mapping="/static/**" location="/static/" cache-period="31536000"/>--> </beans> 7.新建controller

package com.springmvc.controller; import com.springmvc.entity.User; import com.springmvc.service.UserService; import org.apache.commons.collections.map.HashedMap; import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import java.util.Map; /** * @Author : zw * @Date : 11:27 2017/5/5 * @Remark : **/ @Controller @RequestMapping("/user") public class ViewController { private Logger logger = Logger.getLogger(ViewController.class); @Resource(name="UserService") private UserService UserService; @RequestMapping("/index") public String index(){ return "index"; } @RequestMapping("/find") @ResponseBody public Map<String,Object> find(User user, HttpServletRequest request){ Map<String,Object> map = new HashedMap(); User loginUser = UserService.findUserByNameAndPassword(user.getUsername(),user.getPassword()); if(loginUser == null ){ map.put("result","fail"); }else{ map.put("result","success"); } return map; } @RequestMapping("/success") public String success(){ return "success"; } } 8.新建service以及service实现类

package com.springmvc.service; import com.springmvc.entity.User; /** * @Author : zw * @Date : 11:20 2017/5/5 * @Remark : **/ public interface UserService { /** * @param : * @return : * @author : zw * @Date : 2017/5/5 **/ public User findUserByNameAndPassword(String username, String password); }

package com.springmvc.service.impl; import com.springmvc.dao.UserMapper; import com.springmvc.entity.User; import com.springmvc.service.UserService; import org.springframework.stereotype.Service; import javax.annotation.Resource; /** * @Author : zw * @Date : 11:22 2017/5/5 * @Remark : **/ @Service("UserService") public class UserServiceImpl implements UserService { @Resource(name = "UserMapper") private UserMapper UserMapper; /** * @param : [username, password] * @return : com.springmvc.entity.User * @author : zw * @Date : 2017/5/5 **/ @Override public User findUserByNameAndPassword(String username, String password) { return UserMapper.findByNameAndPassword(username,password); } } 9.最底层的sql就不贴了（用笔记本真心的累。。。。）

10.webapp下新建文件夹

11.page目录下的index文件：

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>IDEA搭建SpringMVC并用maven配置的小例子</title> </head> <%--<link rel="stylesheet" href="/asset/css/style.css"/>--%> <script type="text/javascript" src="/static/js/jquery.js"></script> <body> <form id="userForm" action="/user/find" method="post"> 用户名：<input type="text" name="username"><br> 密码：<input type="password" name="password"> <button type="button" οnclick="login()">登录</button> </form> </body> <script> function login() { $.ajax({ type: 'post', url: $('#userForm').attr('action'), data: $('#userForm').serialize(), dataType: 'json', success: function(data){ if (data.result = "success"){ alert("登录成功"); location.href='/user/success'; }else{ alert("用户名或者密码错误！"); } } }); } </script> </html> 12.success文件

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>登录成功</title> </head> <body> 登录成功。。。。。。。。。 </body> </html>

13.web.xml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 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>Archetype Created Web Application</display-name> <context-param> <description>配置Spring配置文件路径</description> <param-name>contextConfigLocation</param-name> <!-- 如果是监听多个文件，可用‘，’隔开 --> <param-value>classpath:spring-*.xml</param-value> </context-param> <listener> <description>配置Spring上下文监听器</description> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <description>Introspector缓存清除监听器</description> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <listener> <description>request监听器</description> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <!-- 配置Spring字符编码过滤器 --> <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> <!--log4j配置文件加载--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:log4j.properties</param-value> </context-param> <!--启动一个watchdog线程每1800秒扫描一下log4j配置文件的变化--> <context-param> <param-name>log4jRefreshInterval</param-name> <param-value>1800000</param-value> </context-param> <!--spring log4j监听器--> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <!-- Spring MVC 核心控制器 DispatcherServlet 配置开始 --> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 可以通过contextConfigLocation来自定义SpringMVC配置文件的位置，如不指定，则默认在WEB-INF目录下，名称为[<servlet-name>]-servlet.xml， 此时文件名必须为[<servlet-name>]-servlet.xml，否则会出错--> <!--以下init-param是自定义SpringMVC的配置文件的位置 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- 拦截设置 --> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 --> <url-pattern>/</url-pattern> </servlet-mapping> <!-- Spring MVC 核心配置结束 --> <!-- 激活Tomcat的defaultServlet来处理静态文件 --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>/static/*</url-pattern> </servlet-mapping> <!-- session 时间 --> <session-config> <session-timeout>30</session-timeout> </session-config> <welcome-file-list> <welcome-file>/WEB-INF/page/index.jsp</welcome-file> </welcome-file-list> </web-app> 至此大功告成，需要源码对比的请 自行下载，最后贴上项目结构