spring+springmvc+mybatis簡易學習demo+mybatis.generator

一、Maven搭建

1.1、pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<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.zbv.ssm</groupId>
    <artifactId>SimpleLearning</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <!-- spring版本號 -->
        <spring.version>4.2.5.RELEASE</spring.version>
        <!-- mybatis版本號 -->
        <mybatis.version>3.2.4</mybatis.version>
        <!-- log4j日誌文件管理包版本 -->
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
    </properties>

    <dependencies>
        <!-- spring核心包 -->
        <!-- springframe start -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-oxm</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- springframe end -->

        <!-- mybatis核心包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <!-- mybatis/spring包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>

        <!--Mybatis-PageHelper分頁插件-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.10</version>
        </dependency>

        <!-- mysql驅動包 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.13</version>
        </dependency>
        <!-- junit測試包 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!-- jstl -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2.1-b03</version>
            <scope>provided</scope>
        </dependency>

        <!-- servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <!-- json數據 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.7.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.7.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.7.1</version>
        </dependency>
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>
        <!-- commons -->
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>1.5.6</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.8.3</version>
        </dependency>
        <dependency>
            <groupId>commons-httpclient</groupId>
            <artifactId>commons-httpclient</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.9</version>
        </dependency>
        <dependency>
            <groupId>javax.annotation</groupId>
            <artifactId>jsr250-api</artifactId>
            <version>1.0</version>
        </dependency>

        <dependency>
            <groupId>net.sf.ezmorph</groupId>
            <artifactId>ezmorph</artifactId>
            <version>1.0.6</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!-- 日誌文件管理包 -->
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!--上傳-->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <!-- log end -->
    </dependencies>

    <build>
        <finalName>SimpleLearning</finalName>

        <plugins>
            <!--            <plugin>-->
            <!--                <groupId>org.apache.tomcat.maven</groupId>-->
            <!--                <artifactId>tomcat7-maven-plugin</artifactId>-->
            <!--                <version>2.2</version>-->
            <!--                <configuration>-->
            <!--                    <uriEncoding>UTF-8</uriEncoding>-->
            <!--                    <port>8080</port>-->
            <!--                    <path>/</path>-->
            <!--                </configuration>-->
            <!--            </plugin>-->

            <!--            <plugin>-->
            <!--                <groupId>org.apache.maven.plugins</groupId>-->
            <!--                <artifactId>maven-compiler-plugin</artifactId>-->
            <!--                <version>3.3</version>-->
            <!--                <configuration>-->
            <!--                    <source>1.8</source>-->
            <!--                    <target>1.8</target>-->
            <!--                    <compilerArguments>-->
            <!--                        <bootclasspath>D:/Program Files/Java/jdk1.8.0_201/jre/lib/rt.jar</bootclasspath>-->
            <!--                    </compilerArguments>-->
            <!--                </configuration>-->
            <!--            </plugin>-->

            <!--Mybatis的數據庫表自動生成相關類插件-->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <configuration>
                    <!--允許移動生成的文件-->
                    <verbose>true</verbose>
                    <!--允許覆蓋生成的文件-->
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

1.2、Maven的規定的格式大致如下圖所示：

二、SSM配置xml

2.1、./resources/spring/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:beans="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="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
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd"  >

    <!-- ①：對com.zbv.ssm包中的所有類進行掃描，以完成Bean創建和自動依賴注入的功能 -->
    <context:component-scan base-package="com.zbv.ssm"/>
    <mvc:annotation-driven />
    <!-- 靜態資源訪問 -->
    <!--如果webapp下你新建了文件夾，想訪問裏面的靜態資源，那麼就要在這配置一下-->
    <mvc:resources location="/images/" mapping="/images/**"/>
    <mvc:resources location="/css/" mapping="/css/**"/>
    <mvc:resources location="/styles/" mapping="/styles/**"/>
    <mvc:resources location="/js/" mapping="/js/**"/>

    <!-- Configures the @Controller programming model
    <mvc:annotation-driven />-->
    <!-- ②：啓動Spring MVC的註解功能，完成請求和註解POJO的映射 -->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter"/>
            </list>
        </property>
    </bean>

    <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <!-- 配置視圖解析器，把控制器的邏輯視頻映射爲真正的視圖 -->
    <!-- /WEB-INF/jsp/start.jsp -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- <context:property-placeholder location="classpath:db.properties"/> -->
    <!--數據庫配置 -->
    <bean id = "propertyConfigurer" class = "org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>

    </bean>

    <!-- 配置dbcp數據庫連接池 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${driver}"/>
        <property name="url" value="${url}"/>
        <property name="username" value="${username}"/>
        <property name="password" value="${password}"/>
        <property name="initialSize" value="1"/>
        <property name="maxActive" value="100"/>
        <property name="maxIdle" value="5"/>
        <property name="maxWait" value="80000"/>
    </bean>

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

    <!-- 攔截器 -->
    <mvc:interceptors>
        <!-- 國際化操作攔截器 如果採用基於（請求/Session/Cookie）則必需配置 -->
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" />
    </mvc:interceptors>
    <!-- 定義無Controller的path<->view直接映射 -->
    <!-- <mvc:view-controller path="/" view-name="redirect:/" /> -->

    <!-- 配置會話工廠SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 數據源 -->
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:sqlmap/*Mapper.xml"/>
        <property name="typeAliasesPackage" value="com.zbv.ssm.entity" />

        <!-- other configuration -->
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageInterceptor">
                    <property name="properties">
                        <!-- config params as the following -->
                        <value>
                            param1=value1
                        </value>
                    </property>
                </bean>
            </array>
        </property>

    </bean>

    <!-- 在spring容器中配置mapper的掃描器產生的動態代理對象在spring的容器中自動註冊，bean的id就是mapper類名（首字母小寫）-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定掃描包的路徑，就是mapper接口的路徑，多個包中間以 半角逗號隔開   -->
        <property name="basePackage" value="com.zbv.ssm.dao"/>
        <!-- 配置sqlSessionFactoryBeanName -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

</beans>

2.2、jdbc.properties （用的是新版的Mysql,驅動driver有所不同）

driver=com.mysql.cj.jdbc.Driver
#mytest爲我本地的數據庫名
url=jdbc:mysql://localhost:3306/employee_manager?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
username=root
#下面輸入自己數據庫的密碼
password=root
#定義初始連接數
initialSize=0
#定義最大連接數
maxActive=20
#定義最大空閒
maxIdle=20
#定義最小空閒
minIdle=1
#定義最長等待時間
maxWait=60000

2.3、log4j.properties (借鑑他人配置，然後修改)

### set log levels ###
log4j.rootLogger = INFO,D,console

# 設定控制檯console的輸出模式
log4j.appender.console=org.apache.log4j.ConsoleAppender 
log4j.appender.console.Encoding=UTF-8
log4j.appender.console.layout=org.apache.log4j.PatternLayout
#指定日誌信息的最低輸出級別，默認爲DEBUG
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout.ConversionPattern=[%d{yyyy-MM-dd HH:mm:ss}] [%-3p] %c{1}: %X{MDCString} %m%n

###輸出到控制檯###
log4j.logger.toConsole=debug,stdout
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout


log4j.appender.stdout.layout.ConversionPattern =%d{yyyy-MM-dd HH\:mm\:ss} [%5p] - %c -%F(%L) -%m%n

### 輸出到日誌文件 ###
##  其中File 可以採用絕對路徑 亦可以採用相對路徑 catalina.home 是tomcat目錄  如果沒有logs文件夾 將會報錯  ##
##  更加傾向於將日誌文件放在  tomcat的日誌目錄下${catalina.home}/logs/salesmanb2bError.log ##
##  絕對路徑如：e:/salesmanb2bError.log ##
log4j.logger.daily=INFO,D
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = ${catalina.home}/logs/SimpleLearning/SimpleLearning.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = INFO
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern =%d{yyyy-MM-dd HH\:mm\:ss} [%5p] - %c -%F(%L) -%m%n


##log4j.logger.org.apache.ibatis=debug,stdout
##log4j.logger.java.sql=debug,stdout

三、mybatis-generator的配置（插件執行自動生成entity、sqlmap等類和xml文件）

3.1、generator.properties

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/employee_manager?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
username=root
password=root

#entity 包名和 java目錄
modelPackage=com.zbv.ssm.entity
modelProject=src/main/java
#sqlmap包名 和resources目錄
sqlPackage=sqlmap
sqlProject=src/main/resources
#mapper包名和 java目錄
mapperPackage=com.zbv.ssm.dao
mapperProject=src/main/java

table1=employee
table2=department

3.2、generatorConfig.xml (引入generator.properties的配置)

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <!--導入屬性配置 -->
    <properties resource="generator.properties"/>

    <classPathEntry
            location="D:\maven_repository\mysql\mysql-connector-java\8.0.13\mysql-connector-java-8.0.13.jar" />
    <context id="context1">
        <!-- 註釋 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" /><!-- 是否取消註釋 -->
            <property name="suppressDate" value="true" /> <!-- 是否生成註釋代時間戳 -->
        </commentGenerator>

        <jdbcConnection driverClass="${driver}"
                        connectionURL="${url}"
                        userId="${username}"
                        password="${password}" />

        <!-- 類型轉換 -->
        <javaTypeResolver>
            <!-- 是否使用bigDecimal， false可自動轉化以下類型（Long, Integer, Short, etc.） -->
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <javaModelGenerator targetPackage="${modelPackage}"
                            targetProject="${modelProject}" />
        <sqlMapGenerator targetPackage="${sqlPackage}" targetProject="${sqlProject}" />
        <javaClientGenerator targetPackage="${mapperPackage}"
                             targetProject="${mapperProject}" type="XMLMAPPER" />

        <!-- 如果需要通配所有表 直接用sql的通配符    %即可 -->
        <table schema="" tableName="${table1}" enableCountByExample="false"
               enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false"/>

        <table schema="" tableName="${table2}" enableCountByExample="false"
               enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false"/>

    </context>
</generatorConfiguration>

四、下面以登錄到主界面爲例貼一部分代碼：

4.1、login_in.jsp

<div class="container">
    <h2>歡迎登錄</h2>
    <div class="div_errors">${error_msg!=null?error_msg:""}</div>
    <form class="login_form" action="/SimpleLearning/LoginIn" method="post">
      <div class="div_name">
        <label for="name">用戶名&nbsp;</label>
        <input type="text" name="name" required="required" placeholder="name" value="${cookie.name.value}"/>
      </div>
      <div class="div_pwd">
        <label for="pwd">密&nbsp;&nbsp;&nbsp;碼&nbsp;</label>
        <input type="password" name="pwd" required="required" placeholder="password" value="${cookie.pwd.value}"/>
      </div>
      <div class="div_validCode">
        <label for="code">驗證碼&nbsp;</label>
        <input type="number" name="code" required="required" placeholder="驗證碼" />
        <img alt="valid.jpg" id="verification_code" onclick="changeValidCodeImg()"></img>
      </div>
      <div class="div_remember">
        <input type="checkbox" name="checkbox" ${empty cookie.remember.value?"":"checked='checked'"}/>
        <span>記住登錄信息</span>
      </div>
      <div>
        <input type="submit" name="submit" value="登錄" class="login_btn"/>
      </div>
    </form>
  </div>


    <script type="text/javascript">
    var validImage;
    var widthValidImg;
    var heightValidImg;

    window.onload=function(){
      validImage=document.getElementById("verification_code");

      widthValidImg=validImage.width;
      heightValidImg=validImage.height;

      console.log("width_img="+widthValidImg+";height_img="+heightValidImg);

      validImage.src="/SimpleLearning/generateValidCode?img_w="+widthValidImg+"&img_h="+heightValidImg;

    }
    ///*
    //檢驗用於信息
    //*/
    //function validUserInfo(){
    //}

    /*
    解決瀏覽器緩存img
    */
    function refreshTimeStamp(){
      return new Date().getTime();
    }

    /*
    刷新驗證碼
    */
    function changeValidCodeImg(){
      validImage.src="/SimpleLearning/generateValidCode?img_w="+widthValidImg
                     +"&img_h="+heightValidImg+"&timestamp=" + refreshTimeStamp();
    }

    </script>

4.2、LoginController.java

package com.zbv.ssm.controller;

import com.sun.xml.internal.messaging.saaj.util.ByteOutputStream;
import com.zbv.ssm.entity.Employee;
import com.zbv.ssm.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Random;

@Controller
@RequestMapping("/SimpleLearning")
public class LoginController {

    @Autowired
    private EmployeeService employeeService;

    //首次登錄地址：localhost:8080/SimpleLearning/toLogin
    @RequestMapping("/toLogin")
    public String toLoginJsp() {
        return "login_in";
    }

    @RequestMapping("/LoginOut")
    public String LoginOut(HttpServletRequest request) {

        //清除所有的Session
        request.getSession().invalidate();

        return "redirect:toLogin";
    }

    @RequestMapping("/LoginIn")
    public String LoginIn(@RequestParam("name") String name,
                          @RequestParam("pwd") String password,
                          @RequestParam("code") String validCode,
                          @RequestParam(value = "checkbox", required = false) Boolean rememberMe, Model model,
                          HttpServletRequest request, HttpServletResponse response) {

        //獲取正確的驗證碼字符串
        String rightValidCode = (String) request.getSession().getAttribute("validCode");

        if(rightValidCode==null){

        }

        System.out.println("name=" + name + ";pwd=" + password + ";code=" + validCode
                + ";checkbox=" + rememberMe + ";rightValidCode=" + rightValidCode);

        Employee employee = employeeService.findEmployeeByNameAndPwd(name, password);

        //如果不勾選則爲null
        if (rememberMe != null) {
            //創建cookie，設置有效時間60*60*24一天
            Cookie nameCookie = new Cookie("name", name);
            nameCookie.setMaxAge(60 * 60 * 24);
            Cookie pwdCookie = new Cookie("pwd", password);
            pwdCookie.setMaxAge(60 * 60 * 24);
            Cookie rememberCookie = new Cookie("remember", "true");
            rememberCookie.setMaxAge(60 * 60 * 24);

            response.addCookie(nameCookie);
            response.addCookie(pwdCookie);
            response.addCookie(rememberCookie);
        } else {
            //如果以前存有cookie就服務端代碼清除,設置MaxAge爲零
            Cookie[] cookies = request.getCookies();
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals("name")
                        || cookie.getName().equals("pwd")
                        || cookie.getName().equals("remember")) {
                    Cookie clearCookie = new Cookie(cookie.getName(), cookie.getValue());
                    clearCookie.setMaxAge(0);
                    response.addCookie(clearCookie);
                }
            }
        }

        // 回到登錄界面，頁面提示錯誤
        if (employee == null) {
            model.addAttribute("error_msg", "用戶名或者密碼錯誤");
            return "login_in";
        } else if (!validCode.equals(rightValidCode)) {
            model.addAttribute("error_msg", "驗證碼錯誤");
            return "login_in";
        }

        //登錄成功，保存用戶信息到Session
        request.getSession().setAttribute("cur_employee", employee);

        return "redirect:getQueryEmployee";
    }


    /**
     * 生成驗證碼 傳統的方式 驗證碼存入Session用於登錄時的驗證
     * <p>
     * validImage.src="/SimpleLearning/generateValidCode?img_w="+widthValidImg+"&img_h="+heightValidImg;
     */
    @RequestMapping(value = "/generateValidCode", method = RequestMethod.GET)
    public void generateValidCode(HttpServletResponse response, HttpServletRequest request,
                                  @RequestParam("img_w") int img_w, @RequestParam("img_h") int img_h) {
        ByteOutputStream bos = new ByteOutputStream();
        String validCode = drawValidCodeImage(bos, img_w, img_h);

        //存入session
        request.getSession().setAttribute("validCode", validCode);
        try {
            ServletOutputStream sos = response.getOutputStream();
            //把字節輸出流寫入到Servlet輸出流（響應流）裏面
            bos.writeTo(sos);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

//    /**
//     * 生成驗證碼,Restful風格，遵循怎麼傳遞怎麼接受
//     * <p>
//     * validImage.src="/SimpleLearning/generateValidCode/img_w="+widthValidImg+"/img_h="+heightValidImg;
//     *
//     * validImage.src="/SimpleLearning/generateValidCode/"+widthValidImg+"/"+heightValidImg;
//     */
//    @RequestMapping(value = "/generateValidCode/{img_w}/{img_h}", method = RequestMethod.GET)
//    public void generateValidCode(HttpServletResponse response, HttpSession session,
//                                  @PathVariable("img_w") int img_w, @PathVariable("img_h") int img_h) {
//        ByteOutputStream bos = new ByteOutputStream();
//        String validCode = drawValidCodeImage(bos, img_w, img_h);
//        //存入session
//        session.setAttribute("validCode", validCode);
//        try {
//            ServletOutputStream sos = response.getOutputStream();
//            bos.writeTo(sos);
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }

    /**
     * 繪製驗證碼圖片
     */
    private String drawValidCodeImage(ByteOutputStream bos, int width, int height) {

        Random rand = new Random();
        BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
        Graphics graphics = bufferedImage.getGraphics();

        graphics.setColor(Color.GREEN);
        graphics.fillRect(0, 0, width, height);

        int minBaseY = (int) Math.floor(height / 2);
        int avgX = (int) Math.floor(width / 4);

        System.out.println("minBaseY=" + minBaseY + ";avgX=" + avgX);

        //製造背景混淆
        graphics.setColor(Color.YELLOW);
        for (int i = 0; i < 1000; i++) {
            graphics.drawOval(rand.nextInt(width), rand.nextInt(height), 1, 1);
        }
        //填充內容漢子或者字母:字符錯開並且可以帶各自的效果
        Color c[] = new Color[]{Color.RED, Color.BLUE, Color.GRAY, Color.BLACK};

        Font font = new Font("Times New Roman", Font.PLAIN, 16);
        graphics.setFont(font);

        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < 4; i++) {
            char codeChar = generateRandomNumber();

            int flag = rand.nextBoolean() ? 1 : -1;
            graphics.setColor(c[rand.nextInt(c.length)]);
            //這樣設定是爲了隨機的高度上下有偏差以及左右的間隔也有偏差甚至會重疊一部分
            graphics.drawString(codeChar + "",
                    avgX * i + rand.nextInt(avgX - 5), height * 2 / 3 + flag * rand.nextInt(minBaseY / 2));

            stringBuilder.append(codeChar);
        }

        graphics.dispose();

        try {
            ImageIO.write(bufferedImage, "jpeg", bos);
        } catch (IOException e) {
            e.printStackTrace();
        }

        return stringBuilder.toString().trim();
    }

    /**
     * 生成隨機數:純數字
     */
    private char generateRandomNumber() {
        String originalString = "1234567890";
        Random random = new Random();
        //nextInt()中的參數表示從開始的能達到的最大範圍值，不包括在內
        return originalString.charAt(random.nextInt(originalString.length()));
    }


}

五、簡單使用界面截圖

六、代碼下載

6.1、百度雲免費下載：

鏈接：百度雲下載
提取碼：fbzl

6.2、csdn積分下載（不推薦，因爲積分多啊）：

我的所有資源（不推薦啊，要積分，太多實在坑）

7、sql文件（拷貝到一個新建的employee_manager.sql文件中）

/*
Navicat MySQL Data Transfer

Source Server         : localhost
Source Server Version : 80013
Source Host           : localhost:3306
Source Database       : employee_manager

Target Server Type    : MYSQL
Target Server Version : 80013
File Encoding         : 65001

Date: 2019-09-19 11:04:01
*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for department
-- ----------------------------
DROP TABLE IF EXISTS `department`;
CREATE TABLE `department` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(15) NOT NULL,
  `number` varchar(30) NOT NULL COMMENT '部門編號',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of department
-- ----------------------------
INSERT INTO `department` VALUES ('1', '部門零零七', 'depart_zero_zero_seven');
INSERT INTO `department` VALUES ('2', '部門二', 'depart_two');
INSERT INTO `department` VALUES ('3', '部門三', 'depart_three');
INSERT INTO `department` VALUES ('4', '部門四', 'depart_four');
INSERT INTO `department` VALUES ('5', '部門五', 'depart_five');
INSERT INTO `department` VALUES ('6', '部門六', 'depart_six');
INSERT INTO `department` VALUES ('7', '部門七', 'depart_seven');
INSERT INTO `department` VALUES ('8', '部門八', 'depart_eight');
INSERT INTO `department` VALUES ('10', '特別部門9', 'special_dept_nine');

-- ----------------------------
-- Table structure for employee
-- ----------------------------
DROP TABLE IF EXISTS `employee`;
CREATE TABLE `employee` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `name` varchar(10) NOT NULL,
  `age` tinyint(4) DEFAULT NULL,
  `email` varchar(30) DEFAULT NULL,
  `password` varchar(15) NOT NULL,
  `dept_id` int(11) NOT NULL,
  `admin` tinyint(4) NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=34 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of employee
-- ----------------------------
INSERT INTO `employee` VALUES ('17', 'xiaoxiao', '18', '[email protected]', '777', '10', '0');
INSERT INTO `employee` VALUES ('18', '777', '7', '[email protected]', '777', '7', '0');
INSERT INTO `employee` VALUES ('19', 'admin', '7', '[email protected]', '777', '7', '1');
INSERT INTO `employee` VALUES ('20', '111', '7', '[email protected]', '777', '1', '0');
INSERT INTO `employee` VALUES ('21', '222', '7', '[email protected]', '777', '2', '0');
INSERT INTO `employee` VALUES ('22', '333', '7', '[email protected]', '777', '3', '0');
INSERT INTO `employee` VALUES ('24', '555', '7', '[email protected]', '777', '5', '0');
INSERT INTO `employee` VALUES ('25', '666', '7', '[email protected]', '777', '6', '0');
INSERT INTO `employee` VALUES ('26', '888', '7', '[email protected]', '777', '7', '0');
INSERT INTO `employee` VALUES ('27', '999', '7', '[email protected]', '777', '8', '0');
INSERT INTO `employee` VALUES ('28', '101', '7', '[email protected]', '777', '9', '0');
INSERT INTO `employee` VALUES ('29', '102', '7', '[email protected]', '777', '2', '0');
INSERT INTO `employee` VALUES ('30', '103', '7', '[email protected]', '777', '4', '0');
INSERT INTO `employee` VALUES ('31', '104', '7', '[email protected]', '777', '6', '0');
INSERT INTO `employee` VALUES ('32', '105', '7', '[email protected]', '777', '0', '0');
INSERT INTO `employee` VALUES ('33', '106', '7', '[email protected]', '777', '7', '0');

-- ----------------------------
-- View structure for midview
-- ----------------------------
DROP VIEW IF EXISTS `midview`;
CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `midview` (`name`,`email`,`deptName`) AS select `e`.`name` AS `userName`,`e`.`email` AS `email`,`p`.`name` AS `department` from (`employee` `e` left join `department` `p` on((`e`.`dept_id` = `p`.`id`))) where ((`e`.`name` like '%10%') or (`p`.`name` like '%特別%')) ;
SET FOREIGN_KEY_CHECKS=1;

spring+springmvc+mybatis簡易學習demo+mybatis.generator

spring+springmvc+mybatis簡易學習demo+mybatis.generator

一、Maven搭建

1.1、pom.xml

1.2、Maven的規定的格式大致如下圖所示：

二、SSM配置xml

2.1、./resources/spring/applicationContext.xml

2.2、jdbc.properties （用的是新版的Mysql,驅動driver有所不同）

2.3、log4j.properties (借鑑他人配置，然後修改)

三、mybatis-generator的配置（插件執行自動生成entity、sqlmap等類和xml文件）

3.1、generator.properties

3.2、generatorConfig.xml (引入generator.properties的配置)

四、下面以登錄到主界面爲例貼一部分代碼：

4.1、login_in.jsp

4.2、LoginController.java

五、簡單使用界面截圖

六、代碼下載

6.1、百度雲免費下載：

6.2、csdn積分下載（不推薦，因爲積分多啊）：

7、sql文件（拷貝到一個新建的employee_manager.sql文件中）

CORS error 但是 status code 是200 OK

使用skopeo同步鏡像

spring+springmvc+mybatis簡易學習demo+mybatis.generator

簡單的使用騰訊X5內核瀏覽器替代Android原生的WebView

Android的架構模式的學習和使用（MVP/MVVM）

消費者生產者模式-Java

自定義具有縮放、旋轉、移動等操作功能的視圖容器

Mac下配置sublime實現LaTeX

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結