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使用maven整合Spring+SpringMVC+Mybatis框架详细步骤(图文)
来源:jb51  时间:2019/5/15 8:38:36  对本文有异议

(项目结构图参照文章末尾)

1、创建maven工程,在pom.xml文件中导入需要的jar包依赖:

  1. <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">
  2. <modelVersion>4.0.0</modelVersion>
  3. <groupId>com.test</groupId>
  4. <artifactId>ssm</artifactId>
  5. <version>0.0.1-SNAPSHOT</version>
  6. <packaging>war</packaging>
  7. <!-- 集中定义版本号 -->
  8. <properties>
  9. <junit.version>4.12</junit.version>
  10. <spring.version>4.1.3.RELEASE</spring.version>
  11. <mybatis.version>3.2.8</mybatis.version>
  12. <mybatis.spring.version>1.2.2</mybatis.spring.version>
  13. <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
  14. <mysql.version>5.1.32</mysql.version>
  15. <slf4j.version>1.6.4</slf4j.version>
  16. <jackson.version>2.4.2</jackson.version>
  17. <druid.version>1.0.9</druid.version>
  18. <httpclient.version>4.3.5</httpclient.version>
  19. <jstl.version>1.2</jstl.version>
  20. <servlet-api.version>2.5</servlet-api.version>
  21. <jsp-api.version>2.0</jsp-api.version>
  22. <joda-time.version>2.5</joda-time.version>
  23. <commons-lang3.version>3.3.2</commons-lang3.version>
  24. <commons-io.version>1.3.2</commons-io.version>
  25. <commons-net.version>3.3</commons-net.version>
  26. <!-- 因为官方的不支持mybatis逆向工程,在源码上有修改,需要自己手动编译 -->
  27. <pagehelper.version>3.4.2-fix</pagehelper.version>
  28. <commons-fileupload.version>1.3.1</commons-fileupload.version>
  29. <jedis.version>2.7.2</jedis.version>
  30. <solrj.version>4.10.3</solrj.version>
  31. <swagger.version>2.4.0</swagger.version>
  32. </properties>
  33. <dependencies>
  34. <!-- 时间操作组件 -->
  35. <dependency>
  36. <groupId>joda-time</groupId>
  37. <artifactId>joda-time</artifactId>
  38. <version>${joda-time.version}</version>
  39. </dependency>
  40. <!-- Apache工具组件 -->
  41. <dependency>
  42. <groupId>org.apache.commons</groupId>
  43. <artifactId>commons-lang3</artifactId>
  44. <version>${commons-lang3.version}</version>
  45. </dependency>
  46. <dependency>
  47. <groupId>org.apache.commons</groupId>
  48. <artifactId>commons-io</artifactId>
  49. <version>${commons-io.version}</version>
  50. </dependency>
  51. <dependency><!-- 通信使用的,如http,ftp -->
  52. <groupId>commons-net</groupId>
  53. <artifactId>commons-net</artifactId>
  54. <version>${commons-net.version}</version>
  55. </dependency>
  56. <!--Jackson Json处理工具包 -->
  57. <dependency>
  58. <groupId>com.fasterxml.jackson.core</groupId>
  59. <artifactId>jackson-databind</artifactId>
  60. <version>${jackson.version}</version>
  61. </dependency>
  62. <!-- httpclient -->
  63. <dependency>
  64. <groupId>org.apache.httpcomponents</groupId>
  65. <artifactId>httpclient</artifactId>
  66. <version>${httpclient.version}</version>
  67. </dependency>
  68. <!-- 单元测试 -->
  69. <dependency>
  70. <groupId>junit</groupId>
  71. <artifactId>junit</artifactId>
  72. <version>${junit.version}</version>
  73. <scope>test</scope>
  74. </dependency>
  75. <!-- 日志处理 -->
  76. <dependency>
  77. <groupId>org.slf4j</groupId>
  78. <artifactId>slf4j-log4j12</artifactId>
  79. <version>${slf4j.version}</version>
  80. </dependency>
  81. <!-- Mybatis -->
  82. <dependency>
  83. <groupId>org.mybatis</groupId>
  84. <artifactId>mybatis</artifactId>
  85. <version>${mybatis.version}</version>
  86. </dependency>
  87. <dependency>
  88. <groupId>org.mybatis</groupId>
  89. <artifactId>mybatis-spring</artifactId>
  90. <version>${mybatis.spring.version}</version>
  91. </dependency>
  92. <dependency>
  93. <groupId>com.github.miemiedev</groupId>
  94. <artifactId>mybatis-paginator</artifactId>
  95. <version>${mybatis.paginator.version}</version>
  96. </dependency>
  97. <!-- 分页插件 -->
  98. <dependency>
  99. <groupId>com.github.pagehelper</groupId>
  100. <artifactId>pagehelper</artifactId>
  101. <version>${pagehelper.version}</version>
  102. </dependency>
  103. <!-- MySql -->
  104. <dependency>
  105. <groupId>mysql</groupId>
  106. <artifactId>mysql-connector-java</artifactId>
  107. <version>${mysql.version}</version>
  108. </dependency>
  109. <!-- 连接池 -->
  110. <dependency>
  111. <groupId>com.alibaba</groupId>
  112. <artifactId>druid</artifactId>
  113. <version>${druid.version}</version>
  114. </dependency>
  115. <!-- Spring -->
  116. <dependency>
  117. <groupId>org.springframework</groupId>
  118. <artifactId>spring-context</artifactId>
  119. <version>${spring.version}</version>
  120. </dependency>
  121. <dependency>
  122. <groupId>org.springframework</groupId>
  123. <artifactId>spring-beans</artifactId>
  124. <version>${spring.version}</version>
  125. </dependency>
  126. <dependency>
  127. <groupId>org.springframework</groupId>
  128. <artifactId>spring-webmvc</artifactId>
  129. <version>${spring.version}</version>
  130. </dependency>
  131. <dependency>
  132. <groupId>org.springframework</groupId>
  133. <artifactId>spring-jdbc</artifactId>
  134. <version>${spring.version}</version>
  135. </dependency>
  136. <dependency>
  137. <groupId>org.springframework</groupId>
  138. <artifactId>spring-aspects</artifactId>
  139. <version>${spring.version}</version>
  140. </dependency>
  141. <!-- JSP相关 -->
  142. <dependency>
  143. <groupId>jstl</groupId>
  144. <artifactId>jstl</artifactId>
  145. <version>${jstl.version}</version>
  146. </dependency>
  147. <dependency>
  148. <groupId>javax.servlet</groupId>
  149. <artifactId>servlet-api</artifactId>
  150. <version>${servlet-api.version}</version>
  151. <scope>provided</scope>
  152. </dependency>
  153. <dependency>
  154. <groupId>javax.servlet</groupId>
  155. <artifactId>jsp-api</artifactId>
  156. <version>${jsp-api.version}</version>
  157. <scope>provided</scope>
  158. </dependency>
  159. <!-- 文件上传组件 -->
  160. <dependency>
  161. <groupId>commons-fileupload</groupId>
  162. <artifactId>commons-fileupload</artifactId>
  163. <version>${commons-fileupload.version}</version>
  164. </dependency>
  165. <!-- Redis客户端 -->
  166. <dependency>
  167. <groupId>redis.clients</groupId>
  168. <artifactId>jedis</artifactId>
  169. <version>${jedis.version}</version>
  170. </dependency>
  171. <!-- solr客户端 -->
  172. <dependency>
  173. <groupId>org.apache.solr</groupId>
  174. <artifactId>solr-solrj</artifactId>
  175. <version>${solrj.version}</version>
  176. </dependency>
  177. <!-- springfox-swagger2 -->
  178. <dependency>
  179. <groupId>io.springfox</groupId>
  180. <artifactId>springfox-swagger2</artifactId>
  181. <version>${swagger.version}</version>
  182. </dependency>
  183. <dependency>
  184. <groupId>io.springfox</groupId>
  185. <artifactId>springfox-swagger-ui</artifactId>
  186. <version>${swagger.version}</version>
  187. </dependency>
  188. </dependencies>
  189.     <build>
  190. <plugins>
  191. <!-- 配置Tomcat插件 -->
  192. <plugin>
  193. <groupId>org.apache.tomcat.maven</groupId>
  194. <artifactId>tomcat7-maven-plugin</artifactId>
  195. <version>2.2</version>
  196. </plugin>
  197. <!-- java编译插件 -->
  198. <plugin>
  199. <groupId>org.apache.maven.plugins</groupId>
  200. <artifactId>maven-compiler-plugin</artifactId>
  201. <version>3.2</version>
  202. <configuration>
  203. <source>1.7</source>
  204. <target>1.7</target>
  205. <encoding>UTF-8</encoding>
  206. </configuration>
  207. </plugin>
  208. </plugins>
  209. </build>
  210. </project>

2、整合SpringMVC:

(1)在web.xml文件中配置前端控制器:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3. xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
  4. xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
  5. id="serviceMarket" version="2.5">
  6. <display-name>ssm-test</display-name>
  7. <welcome-file-list>
  8. <welcome-file>index.html</welcome-file>
  9. <welcome-file>index.htm</welcome-file>
  10. <welcome-file>index.jsp</welcome-file>
  11. <welcome-file>default.html</welcome-file>
  12. <welcome-file>default.htm</welcome-file>
  13. <welcome-file>default.jsp</welcome-file>
  14. </welcome-file-list>
  15. <!-- 加载spring相关配置文件 -->
  16. <context-param>
  17. <param-name>contextConfigLocation</param-name>
  18. <param-value>classpath:spring/applicationContext*.xml</param-value>
  19. </context-param>
  20. <listener>
  21. <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  22. </listener>
  23. <!-- 解决post乱码 -->
  24. <filter>
  25. <filter-name>CharacterEncodingFilter</filter-name>
  26. <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  27. <init-param>
  28. <param-name>encoding</param-name>
  29. <param-value>utf-8</param-value>
  30. </init-param>
  31. </filter>
  32. <filter-mapping>
  33. <filter-name>CharacterEncodingFilter</filter-name>
  34. <url-pattern>/*</url-pattern>
  35. </filter-mapping>
  36. <!-- springmvc的前端控制器 -->
  37. <servlet>
  38. <servlet-name>ssm-test</servlet-name>
  39. <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  40. <!-- 加载springmvc的配置文件(处理器映射器、处理器适配器等等) -->
  41. <init-param>
  42. <param-name>contextConfigLocation</param-name>
  43. <param-value>classpath:spring/springmvc.xml</param-value>
  44. </init-param>
  45. <load-on-startup>1</load-on-startup>
  46. </servlet>
  47. <servlet-mapping>
  48. <servlet-name>ssm-test</servlet-name>
  49. <url-pattern>/</url-pattern>
  50. </servlet-mapping>
  51. </web-app>

(2)编写springmvc.xml文件:

在文件中配置与springmvc框架相关的配置,比如:springmvc.xml约束、处理器映射器、处理器适配器、视图解析器、Handler等配置。

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <beans xmlns="http://www.springframework.org/schema/beans"
  3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
  4. xmlns:context="http://www.springframework.org/schema/context"
  5. xmlns:mvc="http://www.springframework.org/schema/mvc"
  6. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
  7. http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
  8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
  9. <!-- 使用注解驱动:自动配置处理器映射器与处理器适配器 -->
  10. <mvc:annotation-driven />
  11. <!-- 注解方式:配置Handler,自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 -->
  12.      <!-- 批量加载:组件扫描方式: -->
  13. <context:component-scan base-package="com.zwp.controller" />
  14. <!-- 视图解析器:解析jsp页面,默认使用jstl标签,classpath下得有jstl的包 -->
  15.      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  16.          <!-- 配置前后缀 -->
  17.         <property name="prefix" value="/WEB-INF/jsp/"></property>
  18.        <property name="suffix" value=".jsp"></property>
  19.      </bean>
  20. <!-- 静态资源处理,不拦截静态资源,如css、js、imgs -->
  21. <mvc:resources location="/static/css/" mapping="/static/css/**"/>
  22. <mvc:resources location="/static/js/" mapping="/static/js/**"/>
  23. <mvc:resources location="/static/img/" mapping="/static/img/**"/>
  24. <!-- 文件上传相关配置 -->
  25. <bean id="multipartResolver"
  26. class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
  27. <property name="defaultEncoding" value="UTF-8"></property>
  28. <property name="maxUploadSize" value="10240000"></property>
  29. </bean>
  30. </beans>

(3)编写Handler:

  1. //User类的Handler
  2. //需要在类上面加@Controller注解,这样才能被自动扫描到
  3. @Controller
  4. @RequestMapping("/user")
  5. public class UserController {
  6. private static Logger log=LoggerFactory.getLogger(UserController.class);
  7. @RequestMapping(value="/login",method=RequestMethod.GET)
  8. public String login(HttpServletRequest request,Model model){
  9. String username = request.getParameter("username");
  10. String password = request.getParameter("password");
  11. System.out.println("username:"+username+";password:"+password);
  12. User user=null;
  13. if (username.equals("zwp") && password.equals("123456")) {
  14. user = new User();
  15. user.setAge(11);
  16. user.setId(1);
  17. user.setPassword("123456");
  18. user.setUsername("zwp");
  19. log.debug(user.toString());
  20. }
  21. model.addAttribute("user", user);
  22. return "index";
  23. }
  24. }
  1. //User实体类
  2. public class User {
  3. private Integer id;
  4. private String username;
  5. private String password;
  6. private Integer age;
  7. public Integer getId() {
  8. return id;
  9. }
  10. public void setId(Integer id) {
  11. this.id = id;
  12. }
  13. public String getUsername() {
  14. return username;
  15. }
  16. public void setUsername(String username) {
  17. this.username = username;
  18. }
  19. public String getPassword() {
  20. return password;
  21. }
  22. public void setPassword(String password) {
  23. this.password = password;
  24. }
  25. public Integer getAge() {
  26. return age;
  27. }
  28. public void setAge(Integer age) {
  29. this.age = age;
  30. }
  31. @Override
  32. public String toString() {
  33. return "User [id=" + id + ", username=" + username + ", password=" + password + ", age=" + age + "]";
  34. }
  35. }

(4)配置日志文件:

在项目根目录下面创建log4j.properties日志文件,下面是日志文件的基本配置,可以满足大多数项目的需求。

  1. log4j.rootLogger=INFO,Console,File
  2. #定义日志输出目的地为控制台
  3. log4j.appender.Console=org.apache.log4j.ConsoleAppender
  4. log4j.appender.Console.Target=System.out
  5. #可以灵活地指定日志输出格式,下面一行是指定具体的格式
  6. log4j.appender.Console.layout = org.apache.log4j.PatternLayout
  7. log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n
  8. #文件大小到达指定尺寸的时候产生一个新的文件
  9. log4j.appender.File = org.apache.log4j.RollingFileAppender
  10. #指定输出目录
  11. log4j.appender.File.File = logs/ssm.log
  12. #定义文件最大大小
  13. log4j.appender.File.MaxFileSize = 10MB
  14. # 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志
  15. log4j.appender.File.Threshold = ALL
  16. log4j.appender.File.layout = org.apache.log4j.PatternLayout
  17. log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

(5)启动项目,进行测试:

访问地址:http://localhost:8080/ssm/user/login?username=zwp&password=123456,如果出现下面页面则代表映射成功。

至此,SpringMVC的配置就已经成功。

3、Spring和Mybatis框架的整合:

整合思路:由Spring通过单例方式管理SqlSessionFactory;spring和mybatis整合生成代理对象,使用SqlSessionFactory创建SqlSession,持久层的mapper都需要有spring进行管理。

(1)配置dao层,即配置sqlSessionFactory:(我的配置在applicationContext-dao.xml文件中)

  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
  3. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
  4. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  5. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
  6. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
  8. http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
  9. <!-- 1.加载配置文件 -->
  10. <!-- 第一种加载多个.properties文件的方法 -->
  11. <context:property-placeholder location="classpath:resource/*.properties"/>
  12. <!-- 2.配置数据库连接池 -->
  13. <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
  14. destroy-method="close">
  15. <property name="url" value="${jdbc.url}" />
  16. <property name="username" value="${jdbc.username}" />
  17. <property name="password" value="${jdbc.password}" />
  18. <property name="driverClassName" value="${jdbc.driver}" />
  19. <property name="maxActive" value="10" />
  20. <property name="minIdle" value="5" />
  21. </bean>
  22. <!-- 3.让spring创建并管理sqlsessionfactory,使用mybatis和spring整合包中的 -->
  23. <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
  24. <!-- 配置数据源,数据库连接池 -->
  25. <property name="dataSource" ref="dataSource" />
  26. <!-- 加载mybatis的全局配置文件 -->
  27. <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
  28. </bean>
  29. <!-- 4.mapper批量扫描:从mapper包中扫描出mapper,自动创建代理对象并且在spring容器中注册
  30. 需要遵循规范:mapper接口类名和mapper.xml映射文件名称一致,且在同一目录下,
  31. 自动扫描出来的mapper的bean的id为类名(首字母小写)-->
  32. <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
  33. <property name="basePackage" value="com.zwp.mapper" />
  34. </bean>
  35. </beans>

创建并编写SqlMapConfig.xml文件:

  1. <?xml version="1.0" encoding="UTF-8" ?>
  2. <!DOCTYPE configuration
  3. PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  4. "http://mybatis.org/dtd/mybatis-3-config.dtd">
  5. <configuration>
  6. <plugins>
  7. <!-- com.github.pagehelper为PageHelper类所在包名 -->
  8. <plugin interceptor="com.github.pagehelper.PageHelper">
  9. <!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库 -->
  10. <property name="dialect" value="mysql" />
  11. </plugin>
  12. </plugins>
  13. </configuration>

(2)配置service层:(我的配置在applicationContext-service.xml文件中)

  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
  3. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
  4. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  5. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
  6. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
  8. http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
  9. <!-- 自动扫描service层的接口与实现类 -->
  10. <context:component-scan base-package="com.zwp.service" />
  11. </beans>

(3)配置事务:(我的配置在applicationContext-trans.xml文件中)

  1. <beans xmlns="http://www.springframework.org/schema/beans"
  2. xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
  3. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
  4. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  5. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
  6. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
  7. http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
  8. http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
  9. <!-- 事务管理器 -->
  10. <bean id="transactionManager"
  11. class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
  12. <!-- 数据源 -->
  13. <property name="dataSource" ref="dataSource" />
  14. </bean>
  15. <!-- 通知 -->
  16. <tx:advice id="txAdvice" transaction-manager="transactionManager">
  17. <tx:attributes>
  18. <!-- 传播行为 -->
  19. <tx:method name="add*" propagation="REQUIRED" />
  20. <tx:method name="create*" propagation="REQUIRED" />
  21. <tx:method name="insert*" propagation="REQUIRED" />
  22. <tx:method name="save*" propagation="REQUIRED" />
  23. <tx:method name="update*" propagation="REQUIRED" />
  24. <tx:method name="delete*" propagation="REQUIRED" />
  25. <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
  26. <tx:method name="select*" propagation="SUPPORTS" read-only="true" />
  27. <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
  28. </tx:attributes>
  29. </tx:advice>
  30. <!-- 切面 -->
  31. <aop:config>
  32. <aop:advisor advice-ref="txAdvice"
  33. pointcut="execution(* com.zwp.service.*.*(..))" />
  34. </aop:config>
  35. </beans>

至此,Spring和Mybatis框架的整合就完成了。

4、测试:

(1)创建测试用表:

(2)利用MyBatis-Generator自动创建实体类、Mybatis映射文件以及Dao接口。

(3)建立Service和实现类:

  1. //UserService接口类:
  2. @Service
  3. public interface UserService {
  4. public User getUserById(int userId);
  5. }
  1. //UserService的实现类
  2. @Service
  3. public class UserServiceImpl implements UserService {
  4. //注入UserMapper接口
  5. @Autowired
  6. private UserMapper userMapper;
  7. @Override
  8. public User getUserById(int userId) {
  9. User user = userMapper.selectByPrimaryKey(userId);
  10. return user;
  11. }
  12. }

(3)建立UserController类:

  1. //User类的Handler
  2. //需要在类上面加@Controller注解,这样才能被自动扫描到
  3. @Controller
  4. @RequestMapping("/user")
  5. public class UserController {
  6. @Autowired
  7. private UserService userService;
  8. private static Logger log=LoggerFactory.getLogger(UserController.class);
  9. @RequestMapping(value="/getUserById/{userId}",method=RequestMethod.GET)
  10. public @ResponseBody User getUserById(@PathVariable Integer userId){
  11. return userService.getUserById(userId);
  12. }
  13. @RequestMapping(value="/login",method=RequestMethod.GET)
  14. public String login(HttpServletRequest request,Model model){
  15. String username = request.getParameter("username");
  16. String password = request.getParameter("password");
  17. System.out.println("username:"+username+";password:"+password);
  18. User user=null;
  19. if (username.equals("zwp") && password.equals("123456")) {
  20. user = new User();
  21. user.setAge(11);
  22. user.setId(1);
  23. user.setPassword("123456");
  24. user.setUsername("zwp");
  25. log.debug(user.toString());
  26. }
  27. model.addAttribute("user", user);
  28. return "index";
  29. }
  30. }

(4)部署项目,输入地址:http://localhost:8080/ssm/user/getUserById/2,出现下面响应结果,则表示整合成功了。

至此,Maven+Spring+SpringMVC+Mybatis的整合就完成了。

附:项目结构图:

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持w3xue。

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