Spring 整合 MyBits

一些想說的話:

2020的開端真的是太難了,發生了很多不好的事情,我也呆在家裏哪都去不了。但從另一方面講,這個假期對我也很充實,我過着一種我很喜歡的生活:學校借來的這本ssm的書能用,我很開心,很慶幸走之前遇到了這本書;學習厭煩了,可以和想見的人出去見一面,買點菜,聊聊天(有點像退休生活);不用學習自己不喜歡的東西,不用見自己不想見的人;可以學到想學的東西,可以見到想見的人,我又感覺有點小幸福的,希望2020一切都能好起來,不,是變得更好。
寫的有些亂,之所以寫這個,是因爲寒假開始時,我開始學習spring,從這一章開始,前面學的東西終於、馬上要投入使用了,這一章內容是整合ssm,下一章開始的三章就是項目練習,終於到這一階段了!!!!
最後,希望2020我能找到自己想找的實習,加油,奧裏給!

環境搭建

  • 在Eclipse中,新建名爲ssm的Maven項目
    在這裏插入圖片描述
    在這裏插入圖片描述
    在這裏插入圖片描述
    新建好之後會有一些錯,別急,後面會調整好
  • 設置項目ssm的相關特性
    右鍵ssm項目,選擇properties
    在這裏插入圖片描述
    Dynamic Web Model先取消選中,然後應用,然後再選中,調整版本號爲3.1,然後點擊下面黃框的連接,會彈出這樣一個框,填寫
    在這裏插入圖片描述
    然後應用,關閉,這會就發現錯誤已經修正了
    在這裏插入圖片描述
  • 項目最初目錄結構分析
    pom.xml是Maven項目的核心配置文件。
    target目錄是所有工程編譯構建的輸出目錄
    src目錄包含所有工程的源碼文件、配置文件、資源文件等等
    main/java用於存放Java源文件
    main/resources用於存放框架或其他工具的配置文件
    test/java用於存放Java測試的源文件
    test/resources用於存放測試的配置文件
    main/webapp是web應用的目錄,裏面可以包含WEB-INF、js、css等內容
  • 給項目添加SSM框架所需jar包
  • 開始這步之前,可以改一下maven的setting.xml文件
    在這裏插入圖片描述
 <mirror>
      <id>nexus</id>
      <mirrorOf>*</mirrorOf> 
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
    </mirror>
    <mirror>
      <id>nexus-public-snapshots</id>
      <mirrorOf>public-snapshots</mirrorOf>
      <url>http://maven.aliyun.com/nexus/content/repositories/snapshots/</url>
    </mirror>

在這裏插入圖片描述
不然下載會超級慢,我昨天放了一晚上他都沒整好,今天早上查着改了下配置,兩分鐘不到就好了,原文鏈接放這裏了,其實基本跟我這寫的一致,我再寫一遍主要是怕他把博客刪了,以後找不到了
maven下載jar包慢解決方法
編寫pom.xml(可直接複製)

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.my</groupId>
  <artifactId>ssm</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
		<!-- Servlet API -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>3.0-alpha-1</version>
			<scope>provided</scope>
		</dependency>

		<!--  Spring Web -->
		<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>5.0.3.RELEASE</version>
		</dependency>

		<!-- Spring SpringMVC -->
		<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>5.0.3.RELEASE</version>
		</dependency>

		<!-- Spring JDBC -->
		<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>5.0.3.RELEASE</version>
		</dependency>

		<!-- Spring Aspects -->
		<!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>5.0.3.RELEASE</version>
		</dependency>

		<!-- MyBatis -->
		<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.4.5</version>
		</dependency>

		<!-- MyBatis Spring -->
		<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.3.1</version>
		</dependency>

		<!-- C3P0 -->
		<!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.2</version>
		</dependency>

		<!-- MySQL驅動包 -->
		<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.45</version>
		</dependency>

		<!-- JSTL -->
		<!-- https://mvnrepository.com/artifact/jstl/jstl -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple -->
		<dependency>
			<groupId>com.googlecode.json-simple</groupId>
			<artifactId>json-simple</artifactId>
			<version>1.1</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.3</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
		<dependency>
			<groupId>com.google.code.gson</groupId>
			<artifactId>gson</artifactId>
			<version>2.8.2</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.7</version>
		</dependency>
	</dependencies>
</project>

聯網環境下,保存後會自動下載jar包

編寫SSM整合的相關配置文件

1.編寫web.xmlwenjian

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.1" 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">
	<!-- 1.啓動Spring的容器 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- 2.springmvc的前端控制器,攔截所有請求,讀取dispatcherServlet.xml配置 -->
	<servlet>
		<servlet-name>dispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>dispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<!-- 上面的是最基本的,下面是一些優化的,比如防亂碼之類的配置 -->
	<!-- 3、字符編碼過濾器,一定要放在所有過濾器之前 -->
	<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>forceRequestEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>forceResponseEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<!-- 4、使用Rest風格的URI,將頁面普通的post請求轉爲指定的delete或者put請求 -->
	<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>
	<filter>
		<filter-name>HttpPutFormContentFilter</filter-name>
		<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>HttpPutFormContentFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>

2.編寫Spring MVC配置文件
在src/main/webapp/WEB-INF目錄中,創建Spring MVC配置文件,文件名爲dispatcherServlet-servlet.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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
	<!-- 啓動註解掃描功能  -->
	<context:component-scan base-package="com.my" use-default-filters="false">
		<!--只掃描控制器  -->
		<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>
	<!--配置視圖解析器,方便頁面返回  -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
	</bean>
	
	<!--兩個標準配置  -->
	<!-- 將springmvc不能處理的請求交給tomcat -->
	<mvc:default-servlet-handler/>
	<!-- 能支持springmvc更高級的一些功能,JSR303校驗,快捷的ajax...映射動態請求 -->
	<mvc:annotation-driven/>
</beans>

一些具體的標籤功能,有心情了,複習的時候我再貼到這裏~

3.編寫Spring配置文件
在src/main/resources目錄中,創建Spring配置文件,名爲applicationContext.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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
	<context:component-scan base-package="com.my">
		<context:exclude-filter type="annotation"
			expression="org.springframework.stereotype.Controller" />
	</context:component-scan>
	<!-- Spring的配置文件,這裏主要配置和業務邏輯有關的 -->
	<!--=================== 數據源,事務控制,xxx ================-->
	<context:property-placeholder location="classpath:dbconfig.properties" />
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
	</bean>

	<!-- 配置SqlSessionFactoryBean -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 配置MapperScannerConfigurer,Dao接口所在包名,Spring會自動查找其下的類 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.my.dao" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>

	<!-- 配置DataSourceTransactionManager(事務管理) -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 啓用基於註解的聲明式事務管理配置 -->
	<tx:annotation-driven transaction-manager="transactionManager" />
</beans>

在src/main/resources裏新加db.properties
在這裏插入圖片描述

創建實體類

在src/main/java目錄下新建一個pojo包,在包中新建一個實體類UserInfo

package com.my.pojo;

public class UserInfo {
	private int id;
	private String userName;
	private String password;

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getUserName() {
		return userName;
	}

	public void setUserName(String userName) {
		this.userName = userName;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

}

數據庫訪問層開發

在src/main/java中新建一個com.my.dao的包,在包中新建一個UserInfoDao

package com.my.dao;

import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import com.my.pojo.UserInfo;

public interface UserInfoDao {
	// 根據用戶名和密碼查詢
		@Select("select * from user_info where userName = #{userName} and password = #{password}")
		public UserInfo findUserInfoByCond(@Param("userName") String userName, @Param("password") String password);
}

業務邏輯層開發

在src/main/java目錄中,新建一個com.my.service包,用於存放業務邏輯層接口,在包中新建一個類UserInfoService

package com.my.service;

import com.my.pojo.UserInfo;

public interface UserInfoService {
	public UserInfo login(String userName,String password);
}

在com.my.service.impl寫實現類

package com.my.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.my.dao.UserInfoDao;
import com.my.pojo.UserInfo;
import com.my.service.UserInfoService;
@Service("userInfoService")
public class UserInfoServiceImpl implements UserInfoService {
	@Autowired
	private UserInfoDao userInfoDao;
	@Override
	public UserInfo login(String userName, String password) {
		// TODO Auto-generated method stub
		return userInfoDao.findUserInfoByCond(userName, password);
	}

}

控制器開發

在這裏插入圖片描述

package com.my.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.my.pojo.UserInfo;
import com.my.service.UserInfoService;

@Controller
@RequestMapping("userinfo")
public class UserInfoController {
	@Autowired
	private UserInfoService userInfoService;
	@RequestMapping("login")
	public String login(UserInfo ui) {
		UserInfo tempUi=userInfoService.login(ui.getUserName(), ui.getPassword());
		if (tempUi !=null && tempUi.getUserName() != null) {
			return "index";
		}
		else {
			return "redirect:/login.jsp";
		}
	}
}

表示層開發

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	歡迎您,登錄成功!
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="userinfo/login" method="post">
	<table>
		<tr>
			<td>用戶名:</td>
			<td><input type="text" name="userName" /></td>
		</tr>
		<tr>
			<td>密 碼:</td>
			<td><input type="text" name="password" /></td>
		</tr>
		<tr>
			<td><input type="submit" value="登錄" /></td>
			<td></td>
		</tr>
	</table>
</form>
</body>
</html>
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