springboot多模块项目打war包
一、父模块配置
1，指定pakaging:pom
2，指定编译的版本：如下图：
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
</properties>
3，屏蔽内置的tomcat:
（1）这个内置的tomcat是在spring-boot-starter-web这个start中引入的，所以说：
1）如果你的项目里面用到了这个starter（如下），就加上下面蓝色框中的代码将内置的tomcat屏蔽掉
2）如果你的项目里面没用到这个starter，就不会有内置的tomcat，这一条就可以跳过。
3）在大多数项目中都是有用到这个starter中的，而且可能很多子模块中也用到了这个starter，所以可以在父模块中添加（子模块中不需要在添加），并屏蔽内置tomcat，如下：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<!--忽略内嵌tomcat，打包部署到tomcat。注*本地运行的时候要把这一段忽略引入个注释掉，要不然项目启动不了 -->
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
4， 关于对子模块的依赖:
（1）没有用到子模块可以不写
（2）用到哪个配哪个：如下：
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-static</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-infrasture</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-user</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-service-autho</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
5，子模块配置：
<modules>
<module>micro-service-static</module>
<module>micro-service-infrasture</module>
<module>micro-servcice-user</module>
<module>micro-service-autho</module>
<module>micro-service-run</module>
</modules>
6，配置文件配置（该设置可在父模块中统一设置，也可以在子模块中单独设置）
在没有配置的时候报错，找不到transaction.xml。
出错原因：配置文件没有打进war包
需要做如下配置：
<!-- 解决读不到配置文件的问题，将指定的文件打进war包 -->
<resources>
<resource>
<!-- 要打进war包的文件所在的目录 -->
<directory>src/main/resorce</directory>
<includes>
<include>**.*</include>
<include>**/*.*</include>
<include>**/*/*.*</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
7，父模块完整的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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.18.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.googosoft.microservice</groupId>
<artifactId>googosoft-micro-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>googosoft-micro-service</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
</properties>
<!-- 只配置依赖到的即可 -->
<!-- <dependencyManagement>
<dependencies>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-static</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-infrasture</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-user</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-service-autho</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
</dependencyManagement> -->
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 在父模块中配置，子模块无需在配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<!--忽略内嵌tomcat，打包部署到tomcat。注*本地运行的时候要把这一段忽略引入个注释掉，要不然项目启动不了 -->
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!--用于编译jsp -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<!-- 子模块配置 -->
<modules>
<module>micro-service-static</module>
<module>micro-service-infrasture</module>
<module>micro-servcice-user</module>
<module>micro-service-autho</module>
<module>micro-service-run</module>
</modules>
</project>
二、子模块-启动模块配置
1，指定父模块：
<parent>
<groupId>com.googosoft.microservice</groupId>
<artifactId>googosoft-micro-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
2，packaging设置：
这里我需要一个war包，所i一指定成war
<packaging>war</packaging>
3，指定依赖的子模块
如果依赖的模块的packaging为war，就必须配置type，classifier,否则会报下错：
正确的配置：
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-user</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-service-autho</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-infrasture</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
4,打war包插件设置
<plugins>
<!-- war包插件 -->
<plugin>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<!-- 把class打包jar作为附件 -->
<attachClasses>true</attachClasses>
</configuration>
</plugin>
<!-- 指定启动入口 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>com.googosoft.UserBootApplication</mainClass>
</configuration>
</plugin>
</plugins>
5，指定启动入口
<!-- 指定启动入口 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>com.googosoft.UserBootApplication</mainClass>
</configuration>
</plugin>
除了上面的配置还需要加Initializer继承SpringBootServletInitializer重写SpringApplicationBuilder方法，如下：
package com.googosoft; import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer; public class ServletInitializer extends SpringBootServletInitializer { @Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(UserBootApplication.class);
}
}
不重写报错：
重写后：
6，启动模块完整pom.xml
<?xml version="1.0"?>
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.googosoft.microservice</groupId>
<artifactId>googosoft-micro-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-service-run</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>micro-service-run</name>
<packaging>war</packaging>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-user</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-service-autho</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-infrasture</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
</dependencies>
<build>
<!-- 为jar包取名 -->
<finalName>micro-service-run</finalName>
<plugins>
<!-- war包插件 -->
<plugin>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<!-- 把class打包jar作为附件 -->
<attachClasses>true</attachClasses>
</configuration>
</plugin>
<!-- 指定启动入口 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>com.googosoft.UserBootApplication</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
三、子模块-packaging为war的模块设置
1，packaging设置：war
设置为war后必须添加plugin
<plugin>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<!-- 把class打包jar作为附件 -->
<attachClasses>true</attachClasses>
</configuration>
</plugin>
2，模块依赖设置
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-infrasture</artifactId>
<type>jar</type>
<classifier>classes</classifier>
<version>0.0.1-SNAPSHOT</version>
<scope>provided</scope>
</dependency>
3，packaging为war的子模块的完整的pom.xml
<?xml version="1.0"?>
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.googosoft.microservice</groupId>
<artifactId>googosoft-micro-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<artifactId>micro-servcice-user</artifactId>
<name>micro-servcice-user</name>
<url>http://maven.apache.org</url>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.15</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.xmlbeans/xmlbeans -->
<dependency>
<groupId>org.apache.xmlbeans</groupId>
<artifactId>xmlbeans</artifactId>
<version>3.1.0</version>
</dependency>
<!-- poi-ooxml XSSF is our port of the Microsoft Excel XML (2007+) file
format (OOXML) to pure Java -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.15</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.15</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/net.sf.ezmorph/ezmorph -->
<dependency>
<groupId>net.sf.ezmorph</groupId>
<artifactId>ezmorph</artifactId>
<version>1.0.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.wso2.apache.httpcomponents/httpclient -->
<dependency>
<groupId>org.wso2.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.1.wso2v1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/net.sourceforge.jexcelapi/jxl -->
<dependency>
<groupId>net.sourceforge.jexcelapi</groupId>
<artifactId>jxl</artifactId>
<version>2.6.12</version>
</dependency>
<!-- https://mvnrepository.com/artifact/at.bestsolution.efxclipse.eclipse/com.google.gson -->
<!-- <dependency> -->
<!-- <groupId>at.bestsolution.efxclipse.eclipse</groupId> -->
<!-- <artifactId>com.google.gson</artifactId> -->
<!-- <version>2.2.4</version> -->
<!-- <scope>system</scope> -->
<!-- <systemPath>${basedir}/lib/com.google.gson-2.2.4.jar</systemPath> -->
<!-- </dependency> -->
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/eu.bitwalker/UserAgentUtils -->
<dependency>
<groupId>eu.bitwalker</groupId>
<artifactId>UserAgentUtils</artifactId>
<version>1.21</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<!-- <version>1.9.4</version> -->
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
<!-- <dependency> -->
<!-- <groupId>org.apache.commons</groupId> -->
<!-- <artifactId>commons-collections4</artifactId> -->
<!-- <version>4.4</version> -->
<!-- </dependency> -->
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<!-- <dependency> -->
<!-- <groupId>org.apache.commons</groupId> -->
<!-- <artifactId>commons-lang3</artifactId> -->
<!-- <version>3.9</version> -->
<!-- </dependency> -->
<!-- https://mvnrepository.com/artifact/net.sf.json-lib/json-lib -->
<!-- <dependency> -->
<!-- <groupId>net.sf.json-lib</groupId> -->
<!-- <artifactId>json-lib</artifactId> -->
<!-- <version>2.2.3</version> -->
<!-- <scope>system</scope> -->
<!-- <systemPath>${basedir}/lib/json-lib-2.2.3-jdk13.jar</systemPath> -->
<!-- </dependency> --> <!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-core -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.4.2</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-service-static</artifactId>
<version>${project.version}</version>
</dependency>
<!--单测 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--jdbc -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- mysql驱动 -->
<!-- <dependency> -->
<!-- <groupId>mysql</groupId> -->
<!-- <artifactId>mysql-connector-java</artifactId> -->
<!-- </dependency> -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.jslsolucoes</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.1.0</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.2</version>
</dependency>
<dependency>
<groupId>com.googosoft.microservice</groupId>
<artifactId>micro-servcice-infrasture</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- 该模块的packaging为war，所以下面两项必须设置，否则打包会出出错 -->
<type>jar</type>
<classifier>classes</classifier>
</dependency>
</dependencies>
<build>
<!-- 为jar包取名 -->
<finalName>micro-servcice-user</finalName>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<!-- 把class打包jar作为附件 -->
<attachClasses>true</attachClasses>
</configuration>
</plugin>
<!-- 热布署 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<!-- <configuration> -->
<!-- fork : 如果没有该项配置，这个devtools不会起作用，即应用不会restart -->
<!-- <fork>true</fork> -->
<!-- <mainClass>com.googosoft.UserBootApplication</mainClass> -->
<!-- <layout>ZIP</layout> -->
<!-- </configuration> -->
<!-- <executions> -->
<!-- <execution> -->
<!-- <goals> -->
<!-- <goal>repackage</goal>可以把依赖的包都打包到生成的Jar包中 -->
<!-- </goals> -->
<!-- </execution> -->
<!-- </executions> -->
</plugin>
</plugins>
</build>
</project>
四、其他设置
（1）依赖中尽量不要引用外部jar包
（我在开始使用的下面的方式，打包）
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.15</version>
<scope>system</scope>
<systemPath>${basedir}/lib/poi-ooxml-schemas-3.15.jar</systemPath>
</dependency>
项目运行时报错：classNotFound
将后两行去掉，项目就可以正常运行了，引用外部jar包应该是可以使用的，但是可能需要额外的配置，最好不要使用。
springboot多模块项目打war包的更多相关文章
- SpringBoot webmvc项目导出war包并在外部tomcat运行产生的诸多问题以及解决方案
背景: 有需求要将原来的Spring(3.2.6) + Springmvc + Hibernate项目重构为Springboot(1.5.2)项目 描述: 记录重构过程,以及期间遇到的种种问题和对应的 ...
- springboot项目打war包发布到外置tomcat
第一步:修改pom.xml 1. <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> ...
- 使用IDEA构建Spring-boot多模块项目配置流程
使用IDEA构建Spring-boot多模块项目配置流程 1.创建项目 点击Create New Project 在左侧选中Spring Initializer,保持默认配置,点击下一步. 在Grou ...
- SpringBoot多模块项目打包问题
项目结构图如下: 在SpringBoot多模块项目打包时遇见如下错误: 1.repackage failed: Unable to find main class -> [Help 1] 解决步 ...
- 关于传统项目打成war包的的分析
技术在不断的革新,以前的项目没有jar管理工具时,都是手动将依赖的jar拷贝到项目之下,然后Build Path,之后Maven出现了,出现了jar包中央仓库,所有的jar包资源集中在这里,免去频繁去 ...
- 如何将一个SpringBoot简便地打成一个war包（转）
为什么要把SpringBoot打成war包 正常情况下SpringBoot项目是以jar包的形式,通过命令行: java -jar demo.jar 来运行的,并且SpringBoot是内嵌Tomca ...
- SpringBoot简便地打成一个war包
正常情况下SpringBoot项目是以jar包的形式,通过命令行: java -jar demo.jar 来运行的,并且SpringBoot是内嵌Tomcat服务器,所以每次重新启动都是用的新的Tom ...
- 如何将一个SpringBoot简便地打成一个war包（亲测有效）
正常情况下SpringBoot项目是以jar包的形式,通过命令行: 来运行的,并且SpringBoot是内嵌Tomcat服务器,所以每次重新启动都是用的新的Tomcat服务器.正因如此,也出现了一个问 ...
- Springboot中，Tomcat启动war包的流程
将一个SpringBoot项目,打成war包 <!-- 1. 修改POM依赖 --> <dependency> <groupId>org.springframewo ...
随机推荐
- 转载：android audio flinger
https://blog.csdn.net/innost/article/details/6142812 https://blog.csdn.net/zyuanyun/article/details/ ...
- [一本通学习笔记] RMQ专题
傻傻地敲了好多遍ST表. 10119. 「一本通 4.2 例 1」数列区间最大值 #include <bits/stdc++.h> using namespace std; const i ...
- DeepLearningDTU: Building a RNN step by step
exercise 5: Week 5 - Recurrent Neural Networks Building your Recurrent Neural Network - Step by Step
- HTTP状态码详解【转】
HTTP状态码,我都是现查现用. 我以前记得几个常用的状态码,比如200,302,304,404, 503. 一般来说我也只需要了解这些常用的状态码就可以了. 如果是做AJAX,REST,网络爬虫, ...
- wap网站开发小记（转载）
一:网页的一些标记 1:声明 <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http ...
- AcWing 845. 八数码
https://www.acwing.com/problem/content/847/ #include<bits/stdc++.h> using namespace std; int b ...
- 10day 字符集优化 重点
什么是字符编码: 可以实现对非英文字符的支持 计算机操作系统是谁发明的? --美国人--英语 支持中文比较好的编码: UTF-8 比较通用 GBK 比较国际通用 出现乱码的原因: 01. 系统字符集设 ...
- Android开发实战——记账本（3）
开发日志(3)——适配器 昨天将bean类还有DatabaseHelper类写完.为了在MainActivity中调用,将数据保存到数据库中并显示出来.所以要先编写适配器CostListAdapter ...
- C++四种初始化方式
1. 直接初始化直接调用与实参匹配的构造函数,形式如“T t(u)”.2. 拷贝初始化:复制初始化首先使用指定构造函数创建一个临时对象,然后用复制构造函数将那个临时对象复制到正在创建的对象”,形式如“ ...
- android 使用系统级别权限
java.lang.SecurityException: Neither user 10027 nor current process has android.permission.MODIFY_PH ...