maven web 应用配置

太久没有使用java有点生疏了，所以特意使用eclipse，通过maven 配置一下java web工程（本文仅用做个人查阅之用）。

安装jdk和eclipse

jdk的下载可以在360软件管家等地方下载，eclipse可以在官网下载（java ee版本）

eclipse自动补全

Windows -> Preferences -> Java -> Editor -> Content Asist -> Auto activation triggers for Java
添加.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

eclipse自动补全

eclipse maven 源配置

新建一个xml文件：

<settings xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
	    <mirrors>  
        <mirror>  
            <id>alimaven</id>  
            <mirrorOf>central</mirrorOf>  
            <name>aliyun maven</name>  
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>  
        </mirror>  
      
        <mirror>  
            <id>ui</id>  
            <mirrorOf>central</mirrorOf>  
            <name>Human Readable Name for this Mirror.</name>  
            <url>http://uk.maven.org/maven2/</url>  
        </mirror>  
      
        <mirror>  
            <id>jboss-public-repository-group</id>  
            <mirrorOf>central</mirrorOf>  
            <name>JBoss Public Repository Group</name>  
            <url>http://repository.jboss.org/nexus/content/groups/public</url>  
        </mirror>  
    </mirrors>  
</settings>

下图箭头输入的文件就是上面输入的文件路径

配置maven源

启动web服务

由于用了maven，所以不是以前那种安装一个tomcat，然后点击run。

而是先在run configuration配置，如下图：

运行配置

请注意默认是写tomcat:run，图上配置是使用了插件（默认是tomcat6运行）

然后在工程右击，run as -> maven build即可启动服务

使用tomcat7运行

首先在工程的pom.xml文件的build标签加入一段代码，如下表：

<build>
    <finalName>test</finalName>
    <plugins>  
             <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.1</version>
                <configuration>
                    <port>8080</port>
                    <path>/</path>
                    <uriEncoding>UTF-8</uriEncoding>
                    <finalName>test</finalName>
                    <server>tomcat7</server>
                </configuration>
            </plugin>
        </plugins>  
  </build>

path: 配置项目URL根目录
port：端口
finalName: 应该是工程名字

配置一个简单spring mvc工程

在pom.xml文件加入依赖，完整内容如下表：

<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>test</groupId>
  <artifactId>test</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>test Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
  <properties>  
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
        <spring.version>4.1.4.RELEASE</spring.version>  
        <jackson.version>2.5.0</jackson.version>  
    </properties>  
  
  <dependencies>
    
    <!-- junit -->  
        <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>4.12</version>  
            <scope>test</scope>  
        </dependency>  
  
        <!-- spring -->  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-beans</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context</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-web</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-jdbc</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-test</artifactId>  
            <version>${spring.version}</version>  
            <scope>test</scope>  
        </dependency>  
  
        <!-- log4j -->  
        <dependency>  
            <groupId>log4j</groupId>  
            <artifactId>log4j</artifactId>  
            <version>1.2.17</version>  
        </dependency>  
  
        <!-- mysql连接 -->  
        <dependency>  
            <groupId>mysql</groupId>  
            <artifactId>mysql-connector-java</artifactId>  
            <version>5.1.34</version>  
        </dependency>  
  
        <!-- c3p0数据源 -->  
        <dependency>  
            <groupId>com.mchange</groupId>  
            <artifactId>c3p0</artifactId>  
            <version>0.9.5-pre10</version>  
        </dependency>  
  
        <!-- json -->  
        <dependency>  
            <groupId>com.alibaba</groupId>  
            <artifactId>fastjson</artifactId>  
            <version>1.2.3</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-annotations</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-core</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-databind</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
  
        <!-- servlet -->  
        <dependency>  
            <groupId>javax.servlet</groupId>  
            <artifactId>servlet-api</artifactId>  
            <version>3.0-alpha-1</version>  
            <scope>provided</scope>  
        </dependency>  
  
        <dependency>  
            <groupId>javax.servlet</groupId>  
            <artifactId>jstl</artifactId>  
            <version>1.2</version>  
        </dependency>  
  
        <!-- 文件上传 -->  
        <dependency>  
            <groupId>commons-io</groupId>  
            <artifactId>commons-io</artifactId>  
            <version>2.4</version>  
        </dependency>  
  
        <dependency>  
            <groupId>commons-fileupload</groupId>  
            <artifactId>commons-fileupload</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
  </dependencies>
  <build>
    <finalName>test</finalName>
    <plugins>  
             <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.1</version>
                <configuration>
                    <port>8080</port>
                    <path>/</path>
                    <uriEncoding>UTF-8</uriEncoding>
                    <finalName>test</finalName>
                    <server>tomcat7</server>
                </configuration>
            </plugin>
        </plugins>  
  </build>
</project>

修改web.xml文件配置：

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  
     <!-- Spring的log4j监听器 -->  
    <listener>  
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>  
    </listener>  
      
    <!-- 核心控制器 -->  
    <servlet>  
        <servlet-name>springMVC</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>/WEB-INF/applicationContext.xml</param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
    </servlet> 
    <listener>  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
    </listener>  
    <servlet-mapping>  
        <servlet-name>springMVC</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
</web-app>

WEB-INF/applicationContext.xml文件配置：

<?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"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
                        http://www.springframework.org/schema/mvc 
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 
                        http://www.springframework.org/schema/context 
                        http://www.springframework.org/schema/context/spring-context-4.0.xsd 
                        http://www.springframework.org/schema/aop 
                        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
                        http://www.springframework.org/schema/tx 
                        http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
    <!-- 设置使用注解的类所在的jar包 -->
    <context:component-scan base-package="controller" />
</beans>

新建一个包，名字叫做controller。在这个包下面新建一个文件Welcome.java，代码如下：

package controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class Welcome {
	
	@RequestMapping("/welcome")
	public @ResponseBody String index(){
		return "welcome to visit !";
	}
	
}

然后启动服务，访问 http://127.0.0.1:8080/welcome 即可看到效果。

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