ssm整合的配置文件

本是古典何须时尚 2023-07-06 04:49 63阅读 0赞

**目录**

*一、web.xml*

*        1、配置监听器，用来扫描classpath:applicationContext-\*.xml下面的各类配置文件*

*        2、配置SPringMVC的核心处理器 DispatcherServlet*

*        3、SPring解决POST请求乱码*

*        4、form表单只支持 Get和POST  如果想支持rest风格  得配置该过滤器  然后该过滤器会帮我们实现*

*       5、rest请求的过滤器*

*二、spring-mvc.xml中的配置*

*三、applicationContext-service.xml中的配置*

*四、applicationContext-dao.xml的配置*

*     java自己的连接池*

*    c3p0连接池配置*

*    DBCP连接池*

*     jdbc.properties文件*

*五、log4j.properties测试文件，需要引入相关jar包*

* 六、service层*

*七、mapper包*

*    UserMapper.xml映射文件：*

*     别名：*

*    若要使用分页需要在pom中引入依赖：*

*七、控制器层测试*

--------------------

### 一、web.xml   1、配置监听器，用来扫描classpath:applicationContext-\*.xml下面的各类配置文件 ###

<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>

### 2、配置SPringMVC的核心处理器 DispatcherServlet ###

url-patten标签说明：
    
        1./* 拦截所有请求 css img js jsp html action
        2.*.action/*.do *.action 可以拦截以.action结尾的请求
        3./ 拦截css js image action请求 不拦截jsp(推荐)
    
        <servlet>
                <servlet-name>DispatcherServlet</servlet-name>
                <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
                <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>
         
            <servlet-mapping>
                <servlet-name>DispatcherServlet</servlet-name>
                
                <url-pattern>/</url-pattern>
         
            </servlet-mapping>

###     3、SPring解决POST请求乱码 ###

<filter>
                <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
                <url-pattern>/*</url-pattern>
            </filter-mapping>

###     4、form表单只支持 Get和POST  如果想支持rest风格  得配置该过滤器  然后该过滤器会帮我们实现 ###

<filter>
                <filter-name>HiddenHttpMethodFilter</filter-name>
                <filter-class>
                    org.springframework.web.filter.HiddenHttpMethodFilter
                </filter-class>
            </filter>
            <filter-mapping>
                <filter-name>HiddenHttpMethodFilter</filter-name>
                <url-pattern>/*</url-pattern>
            </filter-mapping>

### 5、rest请求的过滤器 ###

### 二、spring-mvc.xml中的配置 ###

静态资源static文件夹放在webapp文件夹下面

### 三、applicationContext-service.xml中的配置 ###

开启事务注解驱动的情况下需要要在service层加@Transactional注解，不然就用如下注释中的<tx:advice id="txAdvice" transaction-manager="transactionManager">的方式

<?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:aop="http://www.springframework.org/schema/aop"
                xmlns:tx="http://www.springframework.org/schema/tx"
                xmlns:mvc="http://www.springframework.org/schema/mvc"
            xsi:schemaLocation="
               http://www.springframework.org/schema/beans
               http://www.springframework.org/schema/beans/spring-beans.xsd
               http://www.springframework.org/schema/context
               http://www.springframework.org/schema/context/spring-context.xsd
               http://www.springframework.org/schema/aop
               http://www.springframework.org/schema/aop/spring-aop.xsd
               http://www.springframework.org/schema/tx
               http://www.springframework.org/schema/tx/spring-tx.xsd
               http://www.springframework.org/schema/mvc
               http://www.springframework.org/schema/mvc/spring-mvc.xsd">
               
               
               
               <context:component-scan base-package="com.ssm.service"></context:component-scan>
               
                   
                   
                   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
                       
                       <property name="dataSource" ref="dataSource"></property>
                   </bean>
                   
               <tx:annotation-driven transaction-manager="transactionManager"/>
                   
                   
                   
                   
                   
                   
                   
              
               
               </beans>

### 四、applicationContext-dao.xml的配置 ###

此处省去了头文件，使用了druid连接池，c3p0，dbcp,连接池单独放下面

<context:component-scan base-package="com.ssm.mapper"></context:component-scan>
               
                <context:property-placeholder location="classpath:*.properties"/>
               
                
                
               <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
                init-method="init" destroy-method="close">
                <property name="driverClassName" value="${jdbc.driver}" />
                <property name="url" value="${jdbc.url}" />
                <property name="username" value="${jdbc.username}" />
                <property name="password" value="${jdbc.password}" />
                
                <property name="initialSize" value="20" />
                <property name="minIdle" value="3" />
                <property name="maxActive" value="100" />
         
                
                <property name="maxWait" value="10000" />
         
            
                <property name="timeBetweenEvictionRunsMillis" value="60000" />
         
                
                <property name="minEvictableIdleTimeMillis" value="300000" />
         
                <property name="testWhileIdle" value="true" />
         
                
                <property name="testOnBorrow" value="true" />
                <property name="testOnReturn" value="false" />
         
                
                <property name="poolPreparedStatements" value="true" />
                <property name="maxPoolPreparedStatementPerConnectionSize"
                    value="20" />
         
                
         
                <property name="defaultAutoCommit" value="true" />
         
                
                <property name="validationQuery" value="select 1 " />
                <property name="filters" value="stat" />
            </bean>
          
               <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
                   <property name="dataSource" ref="dataSource"></property>
                   
                   <property name="typeAliasesPackage" value="com.ssm.model"></property>
               
                   
                   <property name="mapperLocations" value="classpath:com/ssm/mapper/*.xml"></property>
                   
                   
                <property name="plugins">
                <array>
                    <bean class="com.github.pagehelper.PageInterceptor">
                        
                        <property name="properties">
                            <value>
                                helperDialect=mysql
                            </value>
                        </property>
                    </bean>
                </array>
            </property>
                   
               </bean>
               
              
               
               
               <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
                   <property name="basePackage" value="com.ssm.mapper"></property>
                   <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
               
               </bean>
               </beans>

### java自己的连接池 ###

### c3p0连接池配置 ###

### DBCP连接池 ###

###  jdbc.properties文件 ###

jdbc.username=root
        jdbc.password=123
        jdbc.url=jdbc:mysql:///hibernate?useUnicode=true&characterEncoding=utf8
        jdbc.driverClassName=com.mysql.jdbc.Driver
        jdbc.maxPoolSize=200
        jdbc.initialPoolSize=20

### 五、log4j.properties测试文件，需要引入相关jar包 ###

# Global logging configuration
        log4j.rootLogger=INFO, stdout
        # Console output...
        log4j.appender.stdout=org.apache.log4j.ConsoleAppender
        log4j.appender.stdout.Target=System.err
        log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
        log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

###  六、service层 ###

在service实现类中直接注入mybatis的UserMapper接口类，前提是在applicationContext-dao.xml中配置了如下内容，以实现接口的实现类

@Service
        @Transactional
        public class UserServiceImpl implements UserService{
            @Autowired
            private UserMapper userMapper;
            @Override
            public List<User> queryAllUser() {
                List<User> list = userMapper.queryAllUser();
                //System.out.println("service");
                return list;
            }
         
        }

### 七、mapper包 ###

UserMapper接口

public interface UserMapper {
         
            List<User> queryAllUser();
            
        }

### UserMapper.xml映射文件： ###

resultType="user"前提是在applicationContext-dao.xml中配置了别名

<?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.ssm.mapper.UserMapper">
         
            <select id="queryAllUser"  resultType="user">
                select * from tb_user
            </select>
        </mapper>

###  别名： ###

### 若要使用分页需要在pom中引入依赖： ###

<dependency>
                    <groupId>com.github.pagehelper</groupId>
                    <artifactId>pagehelper</artifactId>
                    <version>${mybatis.pagehelper.version}</version>
                </dependency>

### 七、控制器层测试 ###

@Controller
        public class UserController {
            @Autowired
            private UserService userService;
                
            @RequestMapping("/showUser")
            public String showUser(Model model,@RequestParam(defaultValue="4")Integer pageSize,
                    @RequestParam(defaultValue="1")Integer currentPage) {
                Page<Object> page = PageHelper.startPage(currentPage, pageSize);//
                
                List<User> list = userService.queryAllUser();
                
                PageInfo<User> pageInfo = new PageInfo<>(list, 4);
                model.addAttribute("list", list);
                model.addAttribute("NavigatepageNums", pageInfo.getNavigatepageNums());
                
                model.addAttribute("page",pageInfo);
                
                return "allusers";
                //return "allUser";
            }
        }