SSM框架整合之练习篇
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SSM的练习 : 1开发环境 数据库：mysql5.5以上版本。 Jdk：1.7 开发环境：Eclipse mars2 Spring：4.2.4 Mybatis：3.2.7 Tomcat：7 2数据库 数据库使用mysql 数据库。 1、创建crm数据库 2、将参考资料中的sql脚本导入到数据库中 3工程搭建 工程使用Springmvc、spring、mybatis框架整合完成。 Dao层：SqlMapConfig.xml(空) applicationContext-dao.xml:数据库连接池、SqlSessionFactory、Mapper的扫描器。 Service层： 配置包扫描器，扫描所有带@Service注解的类。事务管理器、切面。 表现层： Springmvc.xml:包扫描器@Controller、配置注解驱动、视图解析器。 Jsp：bootstrap Web.xml:配置spring监听器，前端控制器。 3.1SqlMapConfig.xml <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> </configuration> 3.2applicationContext-dao.xml <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" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.2.xsd"> <!-- 配置 读取properties文件 jdbc.properties --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- 配置 数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <!-- 驱动 --> <property name="driverClassName" value="${jdbc.driver}" /> <!-- url --> <property name="url" value="${jdbc.url}" /> <!-- 用户名 --> <property name="username" value="${jdbc.username}" /> <!-- 密码 --> <property name="password" value="${jdbc.password}" /> </bean> <!-- 配置 Mybatis的工厂 --> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 数据源 --> <property name="dataSource" ref="dataSource" /> <!-- 配置Mybatis的核心 配置文件所在位置 --> <property name="configLocation" value="classpath:SqlMapConfig.xml" /> <!-- 配置pojo别名 --> <property name="typeAliasesPackage" value="cn.baidu.core.bean"></property> </bean> <!-- 配置 1：原始Dao开发 接口实现类 Mapper.xml 三个 2：接口开发 接口 不写实现类 Mapper.xml 二个 （UserDao、ProductDao 、BrandDao。。。。。。。） 3：接口开发、并支持扫描 cn.baidu.core.dao(UserDao。。。。。） 写在此包下即可被扫描到 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="cn.baidu.core.dao" /> </bean> </beans> Jdbc.properties jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/crm?characterEncoding=utf-8 jdbc.username=root jdbc.password=root 3.3applicationContext-service.xml <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" xmlns:task="http://www.springframework.org/schema/task" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.2.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd"> <!-- 配置 扫描 @Service --> <context:component-scan base-package="cn.baidu.core.service"/> </beans> 3.4applicationContext-trans.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd"> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 数据源 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 传播行为 --> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="create*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="select*" propagation="SUPPORTS" read-only="true" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <!-- 切面 --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.baidu.core.service.*.*(..))" /> </aop:config> </beans> 3.5Springmvc.xml <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" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.2.xsd"> <!-- 加载属性文件 --> <context:property-placeholder location="classpath:resource.properties"/> <!-- 配置扫描 器 --> <context:component-scan base-package="cn.baidu.core.web.controller"/> <!-- 配置处理器映射器 适配器 --> <mvc:annotation-driven/> <!-- 配置视图解释器 jsp --> <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> </beans> 3.6Web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>customer.action</welcome-file> </welcome-file-list> <!-- 上下文的位置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext-*.xml</param-value> </context-param> <!-- Spring的监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- POST提交过滤器 UTF-8 --> <filter> <filter-name>encoding</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>encoding</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <!-- 前端控制器 --> <servlet> <servlet-name>crm</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 此处不配置 默认找 /WEB-INF/[servlet-name]-servlet.xml --> <param-value>classpath:springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>crm</servlet-name> <!-- 1:*.do *.action 拦截以.do结尾的请求 (不拦截 jsp png jpg .js .css) 2:/ 拦截所有请求 （不拦截.jsp) 建议使用此种 方式 （拦截 .js.css .png) (放行静态资源） 3:/* 拦截所有请求（包括.jsp) 此种方式 不建议使用 --> <url-pattern>*.action</url-pattern> </servlet-mapping> </web-app> 3.7加入jsp及分页标签 Tld文件需要放到WEB-INF目录下， tomcat的规定。当tomcat启动时会自动加载。 Jsp中使用标签： 4查询条件初始化 4.1需求 初始化查询条件下拉列表。 4.2Sql SELECT * from base_dict WHERE dict_type_code='006' 4.3Dao <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.baidu.crm.dao.BaseDictDao"> <select id="getBaseDictList" parameterType="string" resultType="BaseDict"> SELECT * from base_dict WHERE dict_type_code=#{typeCode} </select> </mapper> 4.4Service @Service public class BaseDictServiceImpl implements BaseDictService { @Autowired private BaseDictDao baseDictDao; @Override public List<BaseDict> getBaseDictList(String typeCode) { List<BaseDict> list = baseDictDao.getBaseDictList(typeCode); return list; } } 4.5Controller 规则：子容器可以访问父容器的对象，父容器不能访问子容器的对象。 public class CustomerController { @Autowired private BaseDictService baseDictService; @Value("${customer.source.code}") private String CustomerSourceCode; @Value("${customer.industry.code}") private String CustomerIndustryCode; @Value("${customer.level.code}") private String CustomerLevelCode; @RequestMapping("/list") public String showCustomerList(Model model) { //查询字典表初始化下拉列表 List<BaseDict> custSourceList = baseDictService.getBaseDictList(CustomerSourceCode); List<BaseDict> custIndustryList = baseDictService.getBaseDictList(CustomerIndustryCode); List<BaseDict> custLevelList = baseDictService.getBaseDictList(CustomerLevelCode); //把列表传递给jsp页面 model.addAttribute("fromType", custSourceList); model.addAttribute("industryType", custIndustryList); model.addAttribute("levelType", custLevelList); return "customer"; } } 5客户列表展示 5.1需求 展示商品列表，并且可以根据查询条件过滤查询结果，并且实现分页处理。 5.2Sql SELECT a.cust_id, a.cust_name, a.cust_user_id, a.cust_create_id, b.dict_item_name cust_source, c.dict_item_name cust_industry, d.dict_item_name cust_level, a.cust_linkman, a.cust_phone, a.cust_mobile, a.cust_zipcode, a.cust_address, a.cust_createtime FROM customer a LEFT JOIN base_dict b ON a.cust_source = b.dict_id LEFT JOIN base_dict c ON a.cust_industry = c.dict_id LEFT JOIN base_dict d ON a.cust_level = d.dict_id WHERE cust_name LIKE '%马%' AND cust_source = 6 AND cust_industry = 2 AND cust_level = 22 5.3Dao <select id="getCustList" parameterType="QueryVo" resultType="customer"> SELECT a.cust_id, a.cust_name, a.cust_user_id, a.cust_create_id, b.dict_item_name cust_source, c.dict_item_name cust_industry, d.dict_item_name cust_level, a.cust_linkman, a.cust_phone, a.cust_mobile, a.cust_zipcode, a.cust_address, a.cust_createtime FROM customer a LEFT JOIN base_dict b ON a.cust_source = b.dict_id LEFT JOIN base_dict c ON a.cust_industry = c.dict_id LEFT JOIN base_dict d ON a.cust_level = d.dict_id <where> <if test="custName!=null and custName!=''"> AND cust_name LIKE '%${custName}%' </if> <if test="custSource!=null and custSource!=''"> AND cust_source = #{custSource} </if> <if test="custIndustry!=null and custIndustry!=''"> AND cust_industry = #{custIndustry} </if> <if test="custLevel!=null and custLevel!=''"> AND cust_level = #{custLevel} </if> </where> LIMIT #{start},#{rows} </select> 增加count后的dao <mapper namespace="com.baidu.crm.dao.CustomerDao"> <sql id="cust_query_where"> <where> <if test="custName!=null and custName!=''"> AND cust_name LIKE '%${custName}%' </if> <if test="custSource!=null and custSource!=''"> AND cust_source = #{custSource} </if> <if test="custIndustry!=null and custIndustry!=''"> AND cust_industry = #{custIndustry} </if> <if test="custLevel!=null and custLevel!=''"> AND cust_level = #{custLevel} </if> </where> </sql> <select id="getCustList" parameterType="QueryVo" resultType="customer"> SELECT a.cust_id, a.cust_name, a.cust_user_id, a.cust_create_id, b.dict_item_name cust_source, c.dict_item_name cust_industry, d.dict_item_name cust_level, a.cust_linkman, a.cust_phone, a.cust_mobile, a.cust_zipcode, a.cust_address, a.cust_createtime FROM customer a LEFT JOIN base_dict b ON a.cust_source = b.dict_id LEFT JOIN base_dict c ON a.cust_industry = c.dict_id LEFT JOIN base_dict d ON a.cust_level = d.dict_id <include refid="cust_query_where"/> LIMIT #{start},#{rows} </select> <select id="getCustListCount" parameterType="QueryVo" resultType="int"> SELECT count(*) FROM customer a LEFT JOIN base_dict b ON a.cust_source = b.dict_id LEFT JOIN base_dict c ON a.cust_industry = c.dict_id LEFT JOIN base_dict d ON a.cust_level = d.dict_id <include refid="cust_query_where"/> </select> </mapper> 5.4Service 根据查询条件查询数据库得到客户列表。分页条件。 接收查询条件QueryVo接收，使用page接收页码。 1、通过page计算start。 2、调用dao查询客户列表。 3、做count处理。计算出此查询条件中共查询到多少条记录。 返回结果：Page对象。 条件：QueryVo @Service public class CustomerServiceImpl implements CustomerService { @Autowired private CustomerDao customerDao; @Override public Page<Customer> getCustList(QueryVo queryVo) { queryVo.setStart((queryVo.getPage() - 1) * queryVo.getRows()); List<Customer> custList = customerDao.getCustList(queryVo); Page<Customer> page = new Page<Customer>(); //设置客户列表 page.setRows(custList); page.setPage(queryVo.getPage()); page.setSize(queryVo.getRows()); //计算查询总记录数 int total = customerDao.getCustListCount(queryVo); page.setTotal(total); return page; } } 5.5Controller 5.5.1分析 1、接收页面提交的查询参数： 保证jsp页面提交的表单中的input 的name属性和QueryVo中的属性一致 2、调用Service查询客户列表 3、把客户列表传递给页面。 @RequestMapping("/list") public String showCustomerList(Model model, QueryVo queryVo) throws Exception { String custName = queryVo.getCustName(); if (custName != null && !"".equals(custName)) { custName = new String(custName.getBytes("iso8859-1"), "utf-8"); queryVo.setCustName(custName); } //查询字典表初始化下拉列表 List<BaseDict> custSourceList = baseDictService.getBaseDictList(CustomerSourceCode); List<BaseDict> custIndustryList = baseDictService.getBaseDictList(CustomerIndustryCode); List<BaseDict> custLevelList = baseDictService.getBaseDictList(CustomerLevelCode); //查询客户列表 Page<Customer> page = customerService.getCustList(queryVo); //把page放到request中 model.addAttribute("page", page); //把列表传递给jsp页面 model.addAttribute("fromType", custSourceList); model.addAttribute("industryType", custIndustryList); model.addAttribute("levelType", custLevelList); //页面回显 model.addAttribute("custName", queryVo.getCustName()); model.addAttribute("custSource", queryVo.getCustSource()); model.addAttribute("custIndustry", queryVo.getCustIndustry()); model.addAttribute("custLevel", queryVo.getCustLevel()); return "customer"; } 6修改客户信息 6.1需求 1、点击客户列表中的“修改”按钮弹出客户信息修改对话框，并初始化客户信息 2、点击“保存修改”按钮将修改后的结果保存到数据库中 6.2展示客户信息 6.2.1分析 请求的url： customer/edit.action 参数：cust_id客户id 返回值：响应json数据，直接由Customer转换而来。需要使用@ResponseBody注解。 6.2.2Dao层 根据客户id查询客户信息。 <select id="getCustomerById" parameterType="long" resultType="customer"> select * from customer where cust_id = #{custId} </select> 6.2.3Service层 @Override public Customer getCustomerById(long custId) { Customer customer = customerDao.getCustomerById(custId); return customer; } 6.2.4Controller 要求返回json数据 请求的url： customer/edit.action 参数：cust_id客户id 返回值：响应json数据 @RequestMapping("/edit") @ResponseBody public Customer getCustomerById(Long id) { Customer customer = customerService.getCustomerById(id); return customer; } 6.3提交修改 6.3.1分析 请求的url：customer/update.action 请求的方法：post 参数：表单中的数据。 返回结果：OK 6.3.2Dao层 <update id="updateCustomerById" parameterType="customer"> UPDATE customer <set> <if test="cust_name!=null"> cust_name=#{cust_name}, </if> <if test="cust_user_id!=null"> cust_user_id=#{cust_user_id}, </if> <if test="cust_create_id!=null"> cust_create_id=#{cust_create_id}, </if> <if test="cust_source!=null"> cust_source=#{cust_source}, </if> <if test="cust_industry!=null"> cust_industry=#{cust_industry}, </if> <if test="cust_level!=null"> cust_level=#{cust_level}, </if> <if test="cust_linkman!=null"> cust_linkman=#{cust_linkman}, </if> <if test="cust_phone!=null"> cust_phone=#{cust_phone}, </if> <if test="cust_mobile!=null"> cust_mobile=#{cust_mobile}, </if> <if test="cust_zipcode!=null"> cust_zipcode=#{cust_zipcode}, </if> <if test="cust_address!=null"> cust_address=#{cust_address}, </if> <if test="cust_createtime!=null"> cust_createtime=#{cust_createtime}, </if> </set> WHERE cust_id = #{cust_id} </update> 6.3.3Service层 @Override public void updateCustomerById(Customer customer) { customerDao.updateCustomerById(customer); } 6.3.4Controller 接收参数：Customer接收。 响应结果：OK字符串。使用@ResponseBody 请求的url：customer/update.action @RequestMapping(value="/update", method=RequestMethod.POST) @ResponseBody public String updateCustomer(Customer customer) { customerService.updateCustomerById(customer); //直接向浏览器响应字符串需要使用@ResponseBody return "OK"; } 7删除客户 7.1需求 点击客户列表中的删除按钮，提示“警告信息” 点击确定后删除用户信息，并刷新页面。 分析： 请求的url：customer/delete.action 参数：id（客户id） 响应的内容：OK（字符串需要使用@ResponseBody）
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