SSM2次精简整合

其他 2018-11-21 10:12:18 阅读次数: 0

pom.xml

新增知识点：全局变量（spring-version）

<properties>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
    <spring-version>4.3.7.RELEASE</spring-version>
</properties>
 <dependencies>
   <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>4.11</version>
       <scope>test</scope>
   </dependency>
   <dependency>
       <groupId>javax.servlet</groupId>
       <artifactId>jstl</artifactId>
       <version>1.2</version>
   </dependency>
   <dependency>
       <groupId>javax.servlet</groupId>
       <artifactId>servlet-api</artifactId>
       <version>2.5</version>
   </dependency>
   <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
       <version>5.1.38</version>
   </dependency>
   <dependency>
       <groupId>org.mybatis</groupId>
       <artifactId>mybatis</artifactId>
       <version>3.4.1</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
   <dependency>
       <groupId>org.mybatis</groupId>
       <artifactId>mybatis-spring</artifactId>
       <version>1.2.2</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-context</artifactId>
       <version>${spring-version}</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-core</artifactId>
       <version>${spring-version}</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-beans</artifactId>
       <version>${spring-version}</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-webmvc</artifactId>
       <version>${spring-version}</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-jdbc</artifactId>
       <version>${spring-version}</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-tx</artifactId>
       <version>${spring-version}</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
   <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>druid</artifactId>
       <version>1.1.10</version>
   </dependency>
</dependencies>

web.xml

<!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>
    <!--设置spring启动配置文件位置-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
    <!--设置spring mvc 中文乱码处理-->
    <filter>
        <filter-name>charset</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>charset</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!--启动spring 监听-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--启动 spring mvc-->
    <servlet>
        <servlet-name>spring</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
        <!--启动自动扫描 自动配置-->
        <context:annotation-config></context:annotation-config>
        <context:component-scan base-package="com.njbdqn.mywar"></context:component-scan>
        <!--
                配置spring 的数据源
                DruidDataSource dataSource = new DruidDataSource();
                dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        -->
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
                <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
                <property name="url" value="jdbc:mysql://127.0.0.1:3306/mydemo"></property>
                <property name="username" value="root"></property>
                <property name="password" value="kgc"></property>
        </bean>
        <!--配置mybatis和spring整合-->
        <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
                <property name="configLocation" value="classpath:mybatis.cfg.xml"></property>
                <property name="mapperLocations" value="classpath*:mapper/*.xml"></property>
                <property name="dataSource" ref="dataSource"></property>
        </bean>
        <!--spring借助mybaits-spring包的功能生成代理接口对象-->
        <bean id="scannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
                <property name="basePackage" value="com.njbdqn.mywar.dao"></property>
        </bean>
        <!--启动语句级事务-->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
                <property name="dataSource" ref="dataSource"></property>
        </bean>
        <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

mybatis.cfg.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>
    <typeAliases>
        <typeAlias type="com.njbdqn.mywar.vo.Userinfos" alias="user"></typeAlias>
    </typeAliases>
</configuration>

UserMapper.xml

路径：resources/mapper/UserMapper.xml

<?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.njbdqn.mywar.dao.IUserinfosDAO">
    <insert id="saveUser" parameterType="user">
        insert into userinfos(username,birthday)values(#{username},#{birthday})
    </insert>
    <delete id="delUser" parameterType="int">
        delete from userinfos where userid=#{userid}
    </delete>
    <update id="updateUser" parameterType="user">
        update userinfos set username=#{username},birthday=#{birthday} where userid=#{userid}
    </update>
    <select id="findAll" resultType="user">
        select * from userinfos
    </select>
    <select id="findById" parameterType="int" resultType="user">
        select * from userinfos where userid=#{userid}
    </select>
</mapper>

Controller层

前台传入String日期后台接受解决方案：
1:实体类属性上添加注解
@DateTimeFormat(pattern=“yyyy-MM-dd”)
2.Controller类上添加方法（此处即是采用该方案）

@InitBinder
public void dateHandler(WebDataBinder wdb){
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    sdf.setLenient(true);
    wdb.registerCustomEditor(Date.class,new CustomDateEditor(sdf,true));
}

package com.njbdqn.mywar.controller;

import com.njbdqn.mywar.services.UserService;
import com.njbdqn.mywar.vo.Userinfos;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import java.text.SimpleDateFormat;
import java.util.Date;

@Controller
public class InitCtrl {
    @Autowired
    private UserService userService;

    @InitBinder
    public void dateHandler(WebDataBinder wdb){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        sdf.setLenient(true);
        wdb.registerCustomEditor(Date.class,new CustomDateEditor(sdf,true));
    }

    @RequestMapping("/save.do")
    public String saveUser(Userinfos user){
        userService.saveUser(user);

        return "redirect:/init.do";//response.sendRedirect('init.do')
    }
    @RequestMapping("/del.do")
    public String delUser(int userid){
        userService.delUser(userid);
        return "redirect:/init.do";
    }
    @RequestMapping("/update.do")
    public String updateUser(Userinfos user){
        userService.updateUser(user);
        return "redirect:/init.do";
    }
    @RequestMapping("/init.do")
    public String findAll(HttpServletRequest request){
        request.setAttribute("list",userService.findAll());
        //request.getServletDispatcher("index.jsp").forward(request,response)
        return "index.jsp";
    }
    @RequestMapping("/single.do")
    public String findById(int userid,HttpServletRequest request){
        request.setAttribute("us",userService.findById(userid));
        return "update.jsp";
    }
}

index.jsp

由于web.xml版本为2.3默认将el表达式忽略，即是字符串，因此jsp页面page指令需添加如下内容：

<%@ page contentType=“text/html;charset=UTF-8” language=“java” isELIgnored=“false” %>

idea编写html相关代码快捷键知识点：

h1{用户列表}
table>(tr>th*4)+(tr>td*4)
form[action='save.do' method='post']>input[type='text' name='']*2

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