SSM搭建

時間  2019-11-13
標籤 ssm 搭建 简体版
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SSM搭建

SSM（Spring+SpringMVC+MyBatis）框架集由Spring、SpringMVC、MyBatis三個開源框架整合而成，常做爲數據源較簡單的web項目的框架。.
SpringIoc · SpringMVC · Mybatis php


Table of contents

環境

  • jdk8
  • tomcat8
  • maven
  • IDEA
  • win7

搭建

  1. 導入web工程依賴
  2. 導入spring工程依賴
  3. 搭建基本包結構
  4. 配置resources配置文件

導入web工程依賴

將基本的web工程的依賴導入html

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>


<!--沒有這個依賴會報錯-->
<!--java.lang.NoClassDefFoundError:org/springframework/dao/support/DaoSupport-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>

導入spring工程依賴

將基本的spring工程所須要的依賴導入
springmvc依賴前端

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>

基本包結構

先搭建基本包的基本結構
通常來講是在src/main/java包下新建出一個能表明你和當前項目的包的名字,好比說但是是com.selton.hellossm,
而後在這個包下面,
新建controller包,
controller包用來直接對接前端,
新建dao包,
dao包用來從數據庫獲取數據,
新建service包,
主要的業務邏輯須要在這裏體現,
service包會調用dao層,而後提供給controller使用,
新建entities,
用來存放數據庫的實體,
新建util包,
用來存放工具類,
新建constant包
用來存放通常常量java

配置文件

接下來就是配置resource裏的配置文件mysql

首先是數據源鏈接池的配置
1.c3p0數據源鏈接池配置web

mysql5
導入mysql5依賴spring

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.18</version>
</dependency>  

<!--沒有這個依賴會報錯-->
<!--PropertyAccessException1:org.springframework.beans.MethodInvocationException:-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>

(後面不提,都是在resources下)新建文件sql

導入依賴

com.mchange
c3p0
0.9.5.2
數據庫

c3p0-config.propertiesapi

c3p0.driverClassName=com.mysql.jdbc.Driver
c3p0.url=jdbc:mysql://localhost:3306/databasename?useUnicode=true&characterEncoding=UTF-8
c3p0.username=root
c3p0.password=123456
c3p0.maxActive=50
c3p0.maxIdle=10
c3p0.minIdle=5
c3p0.initialSize=10
c3p0.maxWait=5000
c3p0.minPoolSize=10

接着將數據源鏈接池注入給mybatis
導入依賴

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.2.8</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>

新建spring-mybatis.xml

<?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:context="http://www.springframework.org/schema/context"
       xmlns:task="http://www.springframework.org/schema/task"
       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-4.3.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">


     <!--構建一個C3P0數據源鏈接池對象-->
     <bean id="id_ds_c3p0" class="com.mchange.v2.c3p0.ComboPooledDataSource">
          <property name="driverClass" value="${c3p0.driverClassName}"></property>
          <property name="jdbcUrl" value="${c3p0.url}"></property>
          <property name="user" value="${c3p0.username}"></property>
          <property name="password" value="${c3p0.password}"></property>
          <property name="maxPoolSize" value="${c3p0.maxActive}"></property>
          <property name="initialPoolSize" value="${c3p0.initialSize}"></property>
          <property name="minPoolSize" value="${c3p0.minPoolSize}"></property>
     </bean>

     <!--配置SqlSessionFactory-->
     <bean name="sqlSessionFactory" id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
          <property name="dataSource" ref="id_ds_c3p0"></property>
          <!--<property name="configLocation" value="classpath:mybatis-config.xml"></property>-->
     </bean>
     <!--有了這個配置，咱們就指明瞭咱們的Mapper們，即Dao們，都在哪一個包
          也能使用註解了
           同時不用寫Dao的實現類了
     -->
     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
          <!--basePackage的值若是沒有對呀好包,會報錯-->
          <!--PropertyAccessException 1: org.springframework.beans.MethodInvocationException:-->
          <property name="basePackage" value="com.selton.hellossm.dao"></property>
          <property name="sqlSessionFactoryBeanName"  value="sqlSessionFactory"></property>
     </bean>


</beans>

新建springmvc-config.xml

<?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:context="http://www.springframework.org/schema/context"
       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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--springmvc 只管掃描 controller包-->
    <context:component-scan base-package="com.selton.hellossm.controller"></context:component-scan>

    <!-- 讓spring-mvc支持註解  -->
    <mvc:annotation-driven>
        
    </mvc:annotation-driven>

 </beans>

使用

這時完成了後臺的配置,讓咱們實現一個簡單地登陸系統

用基本maven項目搭建出來的工程骨架裏沒有webapp

咱們須要在src/main下新建文件夾webapp
固然不須要手動建立
idea有自動化的功能 ---連接

在webapp下新建loginfailed.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
login failed
</body>
</html>

新建loginsuccess.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
login success
</body>
</html>

新建index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form action="" method="get">
    name: <input type="text" name="name">
    <br>
    password: <input type="password" name="password">
    <br>
    <input type="submit" value="登陸">
</form>
</body>
</html>

在web.xml中寫入

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    

    <!-- 這個全局參數的做用是：加載Spring-config的配置文件-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-config.xml</param-value>
    </context-param>

    <!--Spring的一個核心監聽器，對Spring容器進行初始化動做
      即咱們之前的ApplicationContext context=new ClassPathXml.....
     -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>


    <!--SpringMVC的核心Servlet-->
    <servlet>
        <servlet-name>spring-mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc-config.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring-mvc</servlet-name>
        <url-pattern>*.php</url-pattern>
    </servlet-mapping>
 

    <!--  處理亂碼-->
    <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>/*</url-pattern>
    </filter-mapping>
</web-app>

完成全部的配置工做後
開始寫後臺代碼

在數據庫中新建

/*
 Navicat Premium Data Transfer

 Source Server         : link1
 Source Server Type    : MySQL
 Source Server Version : 50622
 Source Host           : localhost:3306
 Source Schema         : db_test1

 Target Server Type    : MySQL
 Target Server Version : 50622
 File Encoding         : 65001

 Date: 10/07/2018 11:22:41
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user`  (
  `id` int(11) NOT NULL,
  `name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `password` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `age` int(11) NULL DEFAULT NULL,
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;

SET FOREIGN_KEY_CHECKS = 1;

加入lombok依賴----連接
不使用lombok的話,去掉@Data
而後本身添上無參構造,等各類get,set
在entities中新建實體類User

@Data
public class User {

    private int id;
    private String name;
    private String password;
    private int age;
}

在dao中新建UserDao

@Repository
public interface UserDao {
    
    @Select("SELECT password FROM user WHERE name = #{name}")
    String getUserByNameAndPassword(@Param("name") String name, @Param("password") String password);
}

service包中用來存放接口
在service下新建包serviceimpl,該包下存放service包中接口的實現類
service中新建接口類UserService

public interface UserService {

    boolean loginUserStatus(String name,String password);
}

在serviceimpl包下新建UserServiceImpl類實現UserService接口

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;

    public boolean loginUserStatus(String name, String password) {

        if(name == null || "".equals(name)){
            return false;
        }

        if(password == null || "".equals(password)){
            return false;
        }
        String passwordByName = userDao.getPasswordByName(name);
        System.out.println("passwordByName = " + passwordByName);
        if (password == null){
            return false;
        }

        if (password.equals(passwordByName)) {

            return true;
        }
        return false;
    }
}

controller下新建類UserController

@Controller
@RequestMapping("user")
public class UserController {

    @Autowired
    private UserService userService;

    @PostMapping("userLogin")
    public String userLogin(String name,String password){

        if (userService.loginUserStatus(name,password)) {

            return "/loginsuccess.html";
        }

        return "/loginfailed.html";
    }
}

在index.html的form表單的action中寫入
/userLogin/userLogin.php
寫入form表單中的數據將會提交到這個controller中

運行,tomcat自行配置,記得將war配置到tomcat中,以及pom中packing war

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