idea开发javaweb搭建与配置采坑之旅

list集合常用方法

https://www.cnblogs.com/xiaostudy/p/9503199.html

1.javaweb环境搭建

https://blog.csdn.net/wangxiaoan1234/article/details/76409210

2maven搭建参考(这里的tomcat配置有问题，tomcat可以参考上面)

https://www.cnblogs.com/crazyeagle/p/6665066.html

3.@controller或者需要用到的注解无法使用或找到的时候如图

直接选择第三个add maven。如果发现maven无法找到内容的时候可以这样解决

https://blog.csdn.net/w605283073/article/details/80065566

如果上面方法不能解决，那么还有个方法。将需要导入的依赖copy下来，然后百度搜索

如图：

红色字体是需要导入的包，然后直接百度搜这个包的maven依赖

然后将想下面这样的代码考入pom.xml文件夹下面即可（pom.xml是用来导入依赖的存在，相当于android的依赖库）

<dependency>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-war-plugin</artifactId>
   <version>3.2.0</version>
</dependency>

如果觉得这样实在麻烦，那么下面文件中总结了平时开发所需的开发依赖，直接导入到pom.xml即可，然后构建几遍就可以使用（注意的是groupid和artifactid改成自己创建时候的）：

https://blog.csdn.net/sky_dsy/article/details/52658542?utm_source=blogxgwz0

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.jmgg2</groupId>
    <artifactId>jmgg2-web</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>
    <properties>
        <sping-version>4.0.0.RELEASE</sping-version>
        <mybatis-version>3.2.5</mybatis-version>
    </properties>
    <!-- https://mvnrepository.com/artifact/com.google.code.kaptcha/kaptcha -->
    <repositories>
        <!-- <repository> <id>osc</id> <name>oschina</name> <url>http://maven.oschina.net/content/groups/public/</url>
            <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository>
            <id>central</id> <name>Central Repository</name> <url>http://repo.maven.apache.org/maven2</url>
            <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository>
            <id>spy</id> <name>Spy Repository</name> <url>http://files.couchbase.com/maven2/</url>
            <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository>
            <id>xerces</id> <name>xerces</name> <url>https://xerces.apache.org/xerces2-j/</url>
            <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository>
            <id>proxool</id> <name>proxool</name> <url>http://proxool.cvs.sourceforge.net/viewvc/proxool/</url>
            <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository>
            <id>oschinaMavenThirdparty</id> <name>oschinaMavenThirdparty</name> <url>http://maven.oschina.net/content/repositories/thirdparty/</url>
            <snapshots> <enabled>false</enabled> </snapshots> </repository> -->
    </repositories>
    <dependencies>
        <!-- 极光推送 -->
        <!--<dependency>-->
            <!--<groupId>cn.jpush.api</groupId>-->
            <!--<artifactId>jiguang-common</artifactId>-->
            <!--<version>1.0.1</version>-->
        <!--</dependency>-->
        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
            <version>4.1.6.Final</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.3</version>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>cn.jpush.api</groupId>-->
            <!--<artifactId>jpush-client</artifactId>-->
            <!--<version>3.2.15</version>-->
        <!--</dependency>-->
        <dependency>
            <groupId>com.jolbox</groupId>
            <artifactId>bonecp</artifactId>
            <version>0.8.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-net</groupId>
            <artifactId>commons-net</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>net.sf.ehcache.internal</groupId>
            <artifactId>ehcache-core</artifactId>
            <version>2.8.3</version>
        </dependency>
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.20</version>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>14.0.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.2.3</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.2.3</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.2.3</version>
        </dependency>
        <dependency>
            <groupId>com.sun.mail</groupId>
            <artifactId>javax.mail</artifactId>
            <version>1.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>1.7.5</version>
        </dependency>
        <dependency>
            <groupId>org.jdom</groupId>
            <artifactId>jdom2</artifactId>
            <version>2.0.5</version>
        </dependency>
        <dependency>
            <groupId>org.jsoup</groupId>
            <artifactId>jsoup</artifactId>
            <version>1.7.3</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.6.1</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis-version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.caches</groupId>
            <artifactId>mybatis-ehcache</artifactId>
            <version>1.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.26</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>1.8.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-all</artifactId>
            <version>1.2.2</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.5</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${sping-version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>jexcelapi</groupId>
            <artifactId>jxl</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>fluent-hc</artifactId>
            <version>4.4.1</version>
        </dependency>
        <dependency>
            <groupId>com.memetix</groupId>
            <artifactId>microsoft-translator-java-api</artifactId>
            <version>0.6.2</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.8.0</version>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>net.sf.ezmorph</groupId>
            <artifactId>ezmorph</artifactId>
            <version>1.0.6</version>
        </dependency>
        <dependency>
            <groupId>cn.dreampie</groupId>
            <artifactId>jfinal-shiro-freemarker</artifactId>
            <version>0.1</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/com.github.penggle/kaptcha -->
        <dependency>
            <groupId>com.github.penggle</groupId>
            <artifactId>kaptcha</artifactId>
            <version>2.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.9</version>
        </dependency>
        <dependency>
            <groupId>org.apache.ant</groupId>
            <artifactId>ant</artifactId>
            <version>1.9.4</version>
        </dependency>

        <dependency>
            <groupId>com.github.junrar</groupId>
            <artifactId>junrar</artifactId>
            <version>0.7</version>
        </dependency>
        <!-- config redis data and client jar -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.0.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.1.0</version>
        </dependency>
        <!-- aliyun -->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.6</version>
        </dependency>

        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.6</version>
        </dependency>
        <!-- mongdb -->
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongo-java-driver</artifactId>
            <version>3.0.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>3.2.0</version>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <configuration>
                    <!-- 对丢失web.xml检测机制进行忽略， Dynamic Web Module 3.0 工程时代不需要web.xml文件注册相关内容的，所以工程默认不生成web.xml。-->
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <executions>
                    <execution>
                        <id>default-compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!-- 使用jdk1版本时使用该配置，如果要使用jdk1.8，则下面2行要修改为1.8 -->
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

4.报错看网页错误都是卵的，看编辑器的控制台吧

5.如果对配置文件不感兴趣或者是初学者建议学spring boot吧