原創作品， 轉載請注明來源👉https://www.cnblogs.com/sogeisetsu/p/12933370.html
8 一個真實的開發總結
8.1 網站地址
8.2 代碼文件
https://github.com/sogeisetsu/springstudyy/tree/master/sptumvc-07
sql建表
show databases ;
create database if not exists springstudy character set utf8;
use springstudy;
create table `User` (
`uid` int primary key ,
`username` varchar(20) not null ,
`password` varchar(20) not null ,
`status` char(1),
`code` varchar(50),
constraint check_status check ( status='Y'or 'N')
);
show tables ;
desc User;
alter table User modify uid int auto_increment;
alter table User modify uid int auto_increment;
alter table User modify username varchar(20) unique not null ;
alter table User add `date` DATETIME;
alter table User add `email` varchar(25);
表格結構
| Field | Type | Null | Key | Default | Extra |
|---|---|---|---|---|---|
| uid | int(11) | NO | PRI | NULL | auto_increment |
| username | varchar(20) | NO | UNI | NULL | |
| password | varchar(20) | NO | NULL | ||
| status | char(1) | YES | NULL | ||
| code | varchar(50) | YES | NULL | ||
| date | datetime | YES | NULL | ||
| varchar(25) | YES | NULL |
配置文件關系圖
導包
web.xml
<?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_4_0.xsd"
version="4.0">
<!--靜態資源的名字和controller的路徑名字相同，需要特殊配置讓其走tomcat默認的servlet-->
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/login.html</url-pattern>
<url-pattern>/regist.html</url-pattern>
</servlet-mapping>
<!-- 配置spring的DispatcherServlet-->
<servlet>
<servlet-name>springmvc06</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:Beans.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc06</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置字符編碼-->
<filter>
<filter-name>filterForCharSet</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>filterForCharSet</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置session存活時間-->
<session-config>
<session-timeout>40</session-timeout>
</session-config>
<!-- 配置初始頁面-->
<welcome-file-list>
<welcome-file>login.html</welcome-file>
</welcome-file-list>
<error-page>
<error-code>404</error-code>
<location>/error/sea-404page.html</location>
</error-page>
<error-page>
<error-code>405</error-code>
<location>/error/405.html</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/error/500.html</location>
</error-page>
</web-app>
springmvc 配置（springmvcconfig.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<context:annotation-config/>
<context:component-scan base-package="org.suyuesheng.spring7"/>
<!-- @Response亂碼問題解決-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter" >
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/plain;charset=utf-8</value>
<value>text/html;charset=UTF-8</value>
<value>applicaiton/*;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
<mvc:default-servlet-handler/>
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
數據庫配置(mybatisBean.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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd">
<context:component-scan base-package="org.suyuesheng.spring7"/>
<context:annotation-config/>
<import resource="springmvcconfig.xml"/>
<!-- 引入配置文件-->
<context:property-placeholder location="classpath:druid.properties"/>
<!-- datasource-->
<!-- 連接池 druid-->
<bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSource">
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.name}"/>
<property name="password" value="${jdbc.password}"/>
<property name="initialSize" value="${jdbc.initialSize}"/>
<property name="minIdle" value="${jdbc.minIdle}"/>
<property name="maxActive" value="${jdbc.maxActive}"/>
<property name="maxWait" value="${jdbc.maxWait}"/>
<property name="timeBetweenEvictionRunsMillis" value="${jbbc.timeBetweenEvictionRunsMillis}"/>
<property name="minEvictableIdleTimeMillis" value="${jdbc.minEvictableIdleTimeMillis}"/>
<property name="validationQuery" value="${jdbc.validationQuery}"/>
<property name="testWhileIdle" value="true"/>
</bean>
<!-- sqlsessionFactory-->
<bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatisConfig.xml"/>
<property name="mapperLocations" value="classpath:org/suyuesheng/spring7/mapper/*.xml"/>
</bean>
<!--sqlsession-->
<!-- MapperScannerConfigurer會自動代理，其實不用配置-->
<!-- <bean class="org.mybatis.spring.SqlSessionTemplate" id="sqlSessionTemplate" scope="prototype">-->
<!-- <constructor-arg index="0" ref="sqlSessionFactory"/>-->
<!-- </bean>-->
<!-- 自動代理mapper接口-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" id="mapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="org.suyuesheng.spring7.mapper"/>
</bean>
<bean class="org.suyuesheng.spring7.services.UserService" id="userservice">
<property name="userMapper" ref="userMapper"/>
</bean>
<!-- 配置事務管理器-->
<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<tx:advice transaction-manager="transactionManager" id="interceptor">
<tx:attributes >
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<aop:config proxy-target-class="true">
<aop:pointcut id="tx" expression="execution(* org.suyuesheng.spring7.services.*.*(..))"/>
<aop:advisor advice-ref="interceptor" pointcut-ref="tx"/>
</aop:config>
</beans>
druid連接池配置 （druid.properties）
jdbc.url=jdbc:mysql://106.14.162.154:3306/springstudy?characterEncoding=utf-8&useUnicode=true
jdbc.name=root
jdbc.password=密碼是常規密碼
jdbc.initialSize=5
jdbc.minIdle=5
jdbc.maxActive=10
jdbc.maxWait=10000
#配置間隔多久啟動一次DestroyThread，對連接池內的連接才進行一次檢測，單位是毫秒
#檢測時:1.如果連接空閑並且超過minIdle以外的連接，如果空閑時間超過minEvictableIdleTimeMillis設置的值則直接物理關閉。
# 2.在minIdle以內的不處理。
jbbc.timeBetweenEvictionRunsMillis=600000
#配置一個連接在池中最大空閑時間，單位是毫秒
jdbc.minEvictableIdleTimeMillis=300000
#用來檢測連接是否有效的sql，要求是一個查詢語句，常用select 'x'。如果validationQuery為null，testOnBorrow、testOnReturn、testWhileIdle都不會起作用。
#mysql select 1
#oracle select 1 from dual
jdbc.validationQuery=select 1
#建議配置為true，不影響性能，並且保證安全性。申請連接的時候檢測，如果空閑時間大於timeBetweenEvictionRunsMillis，執行validationQuery檢測連接是否有效。
jdbc.testWhileIdle=true
數據庫配置 （mybatisConfig.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>
<settings>
<setting name="logImpl" value="LOG4J"/>
<setting name="mapUnderscoreToCamelCase" value="true"/>
<setting name="cacheEnabled" value="true"/>
</settings>
<typeAliases>
<package name="org.suyuesheng.spring7.pojo"/>
</typeAliases>
</configuration>
Beans.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<context:annotation-config/>
<context:component-scan base-package="org.suyuesheng.spring7"/>
<import resource="mybatisBean.xml"/>
<import resource="springmvcconfig.xml"/>
<bean class="org.suyuesheng.spring7.pojo.User" id="user"/>
<!-- 配置攔截器-->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/"/>
<mvc:mapping path="/**"/>
<mvc:mapping path="/**/*.html"/>
<mvc:mapping path="/index.html"/>
<mvc:exclude-mapping path="/login*"/>
<mvc:exclude-mapping path="/regist*"/>
<mvc:exclude-mapping path="/**/*.js"/>
<mvc:exclude-mapping path="/**/*.css"/>
<mvc:exclude-mapping path="/bootstrap-3.3.7-dist/**"/>
<mvc:exclude-mapping path="/img/**"/>
<mvc:exclude-mapping path="/active"/>
<bean class="org.suyuesheng.spring7.interceptor.Logininterceptor" id="logininterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
</beans>
8.3 開發過程中遇到的問題
druid配置相關資料
https://my.oschina.net/xzfx/blog/478482
https://www.jianshu.com/p/e75d73129f51
https://blog.csdn.net/sjtu_chenchen/article/details/77618967
MapperScannerConfigurer配置
https://www.cnblogs.com/daxin/p/3545040.html
aop中的propagation的7種配置的意思
https://my.oschina.net/wangyongzhi/blog/631200
下面是Spring中Propagation類的事務屬性詳解：
REQUIRED：支持當前事務，如果當前沒有事務，就新建一個事務。這是最常見的選擇。
SUPPORTS：支持當前事務，如果當前沒有事務，就以非事務方式執行。
MANDATORY：支持當前事務，如果當前沒有事務，就拋出異常。
REQUIRES_NEW：新建事務，如果當前存在事務，把當前事務掛起。
NOT_SUPPORTED：以非事務方式執行操作，如果當前存在事務，就把當前事務掛起。
NEVER：以非事務方式執行，如果當前存在事務，則拋出異常。
NESTED：支持當前事務，如果當前事務存在，則執行一個嵌套事務，如果當前沒有事務，就新建一個事務。
spring mvc路徑匹配原則
靜態資源和controller重名
靜態資源的名字和controller的路徑名字相同，需要特殊配置讓其走tomcat默認的servlet
比如說有個靜態資源叫hello.html 有個controller的路徑是/hello。那么訪問localhost/hello.html的時候會自動跳轉到localhost/hello。為了避免這種現像，需要在web.xml里面定義👇
<!--靜態資源的名字和controller的路徑名字相同，需要特殊配置讓其走tomcat默認的servlet-->
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/login.html</url-pattern>
<url-pattern>/regist.html</url-pattern>
</servlet-mapping>
mvc:interceptors攔截器的用法
阿里雲服務器25端口的問題
Could not connect to SMTP host: smtp.163.com, port: 25，阿里雲服務器封禁了25，解決辦法是使用465端口👇
package org.suyuesheng.spring7.util;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;
/**
* 發郵件工具類
*/
public final class MailUtils {
private static final String USER = "sys088519@163.com"; // 發件人稱號，同郵箱地址
private static final String PASSWORD = "授權碼"; // 如果是qq郵箱可以使戶端授權碼，或者登錄密碼
/**
*
* @param to 收件人郵箱
* @param text 郵件正文
* @param title 標題
*/
/* 發送驗證信息的郵件 */
public static boolean sendMail(String to, String text, String title){
try {
final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
final Properties props = new Properties();
props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
props.setProperty("mail.smtp.socketFactory.fallback", "false");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", "smtp.163.com");
props.setProperty("mail.smtp.port", "465");
props.setProperty("mail.smtp.socketFactory.port", "465");
// 發件人的賬號
props.put("mail.user", USER);
//發件人的密碼
props.put("mail.password", PASSWORD);
// 構建授權信息，用於進行SMTP進行身份驗證
Authenticator authenticator = new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
// 用戶名、密碼
String userName = props.getProperty("mail.user");
String password = props.getProperty("mail.password");
return new PasswordAuthentication(userName, password);
}
};
// 使用環境屬性和授權信息，創建郵件會話
Session mailSession = Session.getInstance(props, authenticator);
// 創建郵件消息
MimeMessage message = new MimeMessage(mailSession);
// 設置發件人
String username = props.getProperty("mail.user");
/**
* 發件人地址：sys088519@163.com
* 發件人姓名：節能減排小組
*/
InternetAddress form = new InternetAddress(username, "節能減排小組");
message.setFrom(form);
// 設置收件人
InternetAddress toAddress = new InternetAddress(to);
message.setRecipient(Message.RecipientType.TO, toAddress);
// 設置郵件標題
message.setSubject(title);
// 設置郵件的內容體
message.setContent(text, "text/html;charset=UTF-8");
// 發送郵件
Transport.send(message);
return true;
}catch (Exception e){
e.printStackTrace();
}
return false;
}
public static void main(String[] args) throws Exception { // 做測試用
MailUtils.sendMail("1446942825@qq.com","<h1>測試郵件，無須回復</h1><hr><p>這是一封測試郵件</p>","測試");
System.out.println("發送成功");
}
}
使用465端口還有一個證書的問題👉[javax.net.ssl.SSLException](http://javax.net.ssl.sslexception/): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty解決辦法是👉https://blog.csdn.net/yu849893679/article/details/86081562