SpringMVC与Mybatis整合环境搭建
2013-09-03 10:46
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Spring与Mybatis整合环境搭建
本文用的jar包如下:
1、下载jar包
springMVC:http://www.springsource.org/download/community
mybatis:http://code.google.com/p/mybatis/wiki/Downloads
准备工作:在MYSQL里新增数据库test,表user
Java代码
CREATE TABLE user (userid int(4) NOT NULL AUTO_INCREMENT, username varchar(50), password varchar(50), PRIMARY KEY (userid)) ENGINE=InnoDB DEFAULT CHARSET=utf8;
2、Spring mvc的基本配置
a---> web.xml
Java代码
<servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:applicationContext.xml</param-value> </context-param> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.htm</url-pattern> </servlet-mapping>
b---> 配置数据源文件 database.properties
Java代码
mysql.database.driver=com.mysql.jdbc.Driver
mysql.database.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
mysql.database.user=root
mysql.database.password=******
c---> Spring 核心配置页 applicationContext.xml
Java代码
<!-- 配置数据库 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:conf/database.properties</value> </list> </property> </bean> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${mysql.database.driver}" /> <property name="url" value="${mysql.database.url}" /> <property name="username" value="${mysql.database.user}" /> <property name="password" value="${mysql.database.password}" /> </bean> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSource" /> </bean> <bean id="sqlMapClient" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource"> <ref local="dataSource" /> </property> <property name="configLocation" value="classpath:conf/SqlMapConfig.xml"></property> </bean> <!-- 把加载了 配置文件的 sqlMapClient 注入 SqlSessionTemplate模板--> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlMapClient" /> </bean> <!-- 注册Mapper:也可不指定特定mapper,而使用自动扫描包的方式来注册各种Mapper ,配置如下:--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.test.dao" /> </bean>
(此文没有配事务,主要还是关心Mybatis的一些配置,详细事务下次再另写文章。)
d---> Spring MVC配置 spring-servlet.xml (放WEB-INF下)
Java代码
<mvc:annotation-driven/> <!-- 注解模式 --> <context:component-scan base-package="com"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan> <!-- 映射jsp --> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/views/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
3、Mybatis的一些配置:
a---> 核心配置SqlMapConfig.xml
Java代码
<configuration> <!-- 对应一些POJO类 然后可以在mapper中引用Emp 等就等于引用这个类类型--> <typeAliases> <typeAlias type="com.test.model.User" alias="User" /> </typeAliases> <mappers> <mapper resource="com/test/dao/UserMapper.xml" /> </mappers> </configuration>
b---> 利用Mybatis工具生成相应的entity,dao,xml等文件,即:
Java代码
User.java//实体类
UserExample.java//Example对象,Mybatis自身生成的一些基础查询都可以用它查。
UserMapper.java//DAO接口文件
UserMapper.xml//Mybatis增删改查等配置文件
具体的生成方法见博文:/article/4002179.html
具体用法等有空再写博文吧。
4、至此所有配置+环境都可以用了,写下测试类测试下:
a---> 新建测试Service: TestServiceImpl.java
Java代码
@Service public class TestServiceImpl implements TestService{ @Resource private UserMapper userMapper; public List<User> getUserList(){ UserExample uEx = new UserExample(); uEx.createCriteria().andUsernameEqualTo("111"); List<User> list = userMapper.selectByExample(uEx); return list; } }
//getUserList() 查询出username为‘111’的用户。(前提得自己在数据库里插入这个用户。
b---> Spring Controller类:TestController.java
Java代码
@Controller
@RequestMapping("test")
public class TestController {
@Resource
private TestService testService;
@RequestMapping(value = "list")
public ModelAndView getUserTest(HttpServletResponse response) throws Exception {
List list = this.testService.getUserList();
System.out.println("listsize:"+list.size());
ModelAndView mav = new ModelAndView();
mav.addObject(list);
mav.setViewName("list");
return mav;
}
}
打印结果:listsize:1
访问:项目名/test/list.html即可进入此TestController的getUserTest()方法,并将得到的list放到结果页,即项目名/webroot/web-inf/views/list.jsp中。
----------------------------------------------
遇到问题:
在用UserMapper文件的时候,报错:
java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for ......
网上看到的可能导致此类错异常的原因:
The three names have to match:
- interface = com.enlliance.inventory.mappers.SettingMapper.class
- mapper file = /com/enlliance/inventory/mappers/SettingMapper.xml
- mapper namespace = com.enlliance.inventory.mappers.SettingMapper
解决方法:
将UserMapper.xml中的namespace更改如下:
<mapper namespace="com.faj.dao.UserMapper" >
问题解决。
----------------------------------------------
参考资料:
http://blog.sina.com.cn/s/blog_93b15c4d010145i1.html
http://layznet.iteye.com/blog/1021533
//Mybatis的教程系统文章,很全。
/article/4126877.html
----------------------------------------------
相关资料:
SpringMVC 声明式事务学习以及问题解决/article/4002199.html
使用mybatis-generator自动生成Mybatis相关代码/article/4002179.html
转载自:/article/4002194.html
本文用的jar包如下:
1、下载jar包
springMVC:http://www.springsource.org/download/community
mybatis:http://code.google.com/p/mybatis/wiki/Downloads
准备工作:在MYSQL里新增数据库test,表user
Java代码
CREATE TABLE user (userid int(4) NOT NULL AUTO_INCREMENT, username varchar(50), password varchar(50), PRIMARY KEY (userid)) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE user (userid int(4) NOT NULL AUTO_INCREMENT, username varchar(50), password varchar(50), PRIMARY KEY (userid)) ENGINE=InnoDB DEFAULT CHARSET=utf8;
2、Spring mvc的基本配置
a---> web.xml
Java代码
<servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:applicationContext.xml</param-value> </context-param> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.htm</url-pattern> </servlet-mapping>
<servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:applicationContext.xml</param-value> </context-param> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.htm</url-pattern> </servlet-mapping>
b---> 配置数据源文件 database.properties
Java代码
mysql.database.driver=com.mysql.jdbc.Driver
mysql.database.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
mysql.database.user=root
mysql.database.password=******
mysql.database.driver=com.mysql.jdbc.Driver mysql.database.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 mysql.database.user=root mysql.database.password=******
c---> Spring 核心配置页 applicationContext.xml
Java代码
<!-- 配置数据库 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:conf/database.properties</value> </list> </property> </bean> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${mysql.database.driver}" /> <property name="url" value="${mysql.database.url}" /> <property name="username" value="${mysql.database.user}" /> <property name="password" value="${mysql.database.password}" /> </bean> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSource" /> </bean> <bean id="sqlMapClient" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource"> <ref local="dataSource" /> </property> <property name="configLocation" value="classpath:conf/SqlMapConfig.xml"></property> </bean> <!-- 把加载了 配置文件的 sqlMapClient 注入 SqlSessionTemplate模板--> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlMapClient" /> </bean> <!-- 注册Mapper:也可不指定特定mapper,而使用自动扫描包的方式来注册各种Mapper ,配置如下:--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.test.dao" /> </bean>
<!-- 配置数据库 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:conf/database.properties</value> </list> </property> </bean> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${mysql.database.driver}" /> <property name="url" value="${mysql.database.url}" /> <property name="username" value="${mysql.database.user}" /> <property name="password" value="${mysql.database.password}" /> </bean> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSource" /> </bean> <bean id="sqlMapClient" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource"> <ref local="dataSource" /> </property> <property name="configLocation" value="classpath:conf/SqlMapConfig.xml"></property> </bean> <!-- 把加载了 配置文件的 sqlMapClient 注入 SqlSessionTemplate模板--> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlMapClient" /> </bean> <!-- 注册Mapper:也可不指定特定mapper,而使用自动扫描包的方式来注册各种Mapper ,配置如下:--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.test.dao" /> </bean>
(此文没有配事务,主要还是关心Mybatis的一些配置,详细事务下次再另写文章。)
d---> Spring MVC配置 spring-servlet.xml (放WEB-INF下)
Java代码
<mvc:annotation-driven/> <!-- 注解模式 --> <context:component-scan base-package="com"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan> <!-- 映射jsp --> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/views/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
<mvc:annotation-driven/> <!-- 注解模式 --> <context:component-scan base-package="com"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan> <!-- 映射jsp --> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/views/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
3、Mybatis的一些配置:
a---> 核心配置SqlMapConfig.xml
Java代码
<configuration> <!-- 对应一些POJO类 然后可以在mapper中引用Emp 等就等于引用这个类类型--> <typeAliases> <typeAlias type="com.test.model.User" alias="User" /> </typeAliases> <mappers> <mapper resource="com/test/dao/UserMapper.xml" /> </mappers> </configuration>
<configuration> <!-- 对应一些POJO类 然后可以在mapper中引用Emp 等就等于引用这个类类型--> <typeAliases> <typeAlias type="com.test.model.User" alias="User" /> </typeAliases> <mappers> <mapper resource="com/test/dao/UserMapper.xml" /> </mappers> </configuration>
b---> 利用Mybatis工具生成相应的entity,dao,xml等文件,即:
Java代码
User.java//实体类
UserExample.java//Example对象,Mybatis自身生成的一些基础查询都可以用它查。
UserMapper.java//DAO接口文件
UserMapper.xml//Mybatis增删改查等配置文件
User.java//实体类 UserExample.java//Example对象,Mybatis自身生成的一些基础查询都可以用它查。 UserMapper.java//DAO接口文件 UserMapper.xml//Mybatis增删改查等配置文件
具体的生成方法见博文:/article/4002179.html
具体用法等有空再写博文吧。
4、至此所有配置+环境都可以用了,写下测试类测试下:
a---> 新建测试Service: TestServiceImpl.java
Java代码
@Service public class TestServiceImpl implements TestService{ @Resource private UserMapper userMapper; public List<User> getUserList(){ UserExample uEx = new UserExample(); uEx.createCriteria().andUsernameEqualTo("111"); List<User> list = userMapper.selectByExample(uEx); return list; } }
@Service public class TestServiceImpl implements TestService{ @Resource private UserMapper userMapper; public List<User> getUserList(){ UserExample uEx = new UserExample(); uEx.createCriteria().andUsernameEqualTo("111"); List<User> list = userMapper.selectByExample(uEx); return list; } }
//getUserList() 查询出username为‘111’的用户。(前提得自己在数据库里插入这个用户。
b---> Spring Controller类:TestController.java
Java代码
@Controller
@RequestMapping("test")
public class TestController {
@Resource
private TestService testService;
@RequestMapping(value = "list")
public ModelAndView getUserTest(HttpServletResponse response) throws Exception {
List list = this.testService.getUserList();
System.out.println("listsize:"+list.size());
ModelAndView mav = new ModelAndView();
mav.addObject(list);
mav.setViewName("list");
return mav;
}
}
@Controller @RequestMapping("test") public class TestController { @Resource private TestService testService; @RequestMapping(value = "list") public ModelAndView getUserTest(HttpServletResponse response) throws Exception { List list = this.testService.getUserList(); System.out.println("listsize:"+list.size()); ModelAndView mav = new ModelAndView(); mav.addObject(list); mav.setViewName("list"); return mav; } }
打印结果:listsize:1
访问:项目名/test/list.html即可进入此TestController的getUserTest()方法,并将得到的list放到结果页,即项目名/webroot/web-inf/views/list.jsp中。
----------------------------------------------
遇到问题:
在用UserMapper文件的时候,报错:
java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for ......
网上看到的可能导致此类错异常的原因:
The three names have to match:
- interface = com.enlliance.inventory.mappers.SettingMapper.class
- mapper file = /com/enlliance/inventory/mappers/SettingMapper.xml
- mapper namespace = com.enlliance.inventory.mappers.SettingMapper
解决方法:
将UserMapper.xml中的namespace更改如下:
<mapper namespace="com.faj.dao.UserMapper" >
问题解决。
----------------------------------------------
参考资料:
http://blog.sina.com.cn/s/blog_93b15c4d010145i1.html
http://layznet.iteye.com/blog/1021533
//Mybatis的教程系统文章,很全。
/article/4126877.html
----------------------------------------------
相关资料:
SpringMVC 声明式事务学习以及问题解决/article/4002199.html
使用mybatis-generator自动生成Mybatis相关代码/article/4002179.html
转载自:/article/4002194.html
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