本文主要是介绍基于Eclipse Maven的Spring4/Spring-MVC/Hibernate4整合之一 ： Maven的pom.xml环境配置及注意方面，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
先说下我们的开发环境，用的Eclipse版本为最新下载的Eclipse for JavaEE, Mars.2 Release (4.5.2)，已经内置了maven，因为外面maven越来越流行，而且管理库依赖非常方便，所以也顺便用学习学习，但这几天的使用感觉，eclipse下的maven有点傻，而且会无缘无故让项目的配置参数丢失，最后不知道动了什么修改的xml文件、java文件不会自动编译了亦不会同步到tomcat的调试目录，为此不得不重新恢复之前的备份。
用的框架版本：spring 4.2.0.RELEASE, hibernate-core/hibernate-entitymanager版本4.3.5.Final，postgresql jdbc版本9.4.1208
下面给出完整的pom.xml， pom配置对spring来说至关重要，因为一不小心配置里面有不同版本的依赖同时存在，就很可以让整个spring加载不起来！
(16/Jun/2016重新修改）
<!-- http://mvnrepository.com/ 想要什麽，通過這個URL查找 -->
<!-- -->
<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.freestyle.gpchat</groupId><artifactId>gpchat</artifactId><packaging>war</packaging><version>0.0.1-SNAPSHOT</version><name>gpchat Maven Webapp</name><url>http://maven.apache.org</url><properties><spring.version>4.2.0.RELEASE</spring.version><struts.version>2.3.28.1</struts.version><aspectj.version>1.8.7</aspectj.version><spring-hibernate.version>4.3.5.Final</spring-hibernate.version><hibernate.version>3.2.7.ga</hibernate.version></properties><dependencies><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><!-- Spring dependencies --><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-webmvc</artifactId><version>${spring.version}</version></dependency><!-- http://mvnrepository.com/artifact/org.springframework/spring-jdbc --><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><!-- http://mvnrepository.com/artifact/org.springframework/spring-orm --><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spring.version}</version></dependency><!-- http://mvnrepository.com/artifact/org.springframework/spring-aop --><!-- <dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency>--><dependency><groupId>org.aspectj</groupId><artifactId>aspectjrt</artifactId><version>${aspectj.version}</version></dependency> <!-- http://mvnrepository.com/artifact/org.aspectj/aspectjweaver --><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.9</version></dependency><!-- http://mvnrepository.com/artifact/javassist/javassist -->
<!--
<dependency><groupId>javassist</groupId><artifactId>javassist</artifactId><version>3.8.1.GA</version>
</dependency>--> <!-- Struts2 --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-core</artifactId><version>${struts.version}</version><exclusions><exclusion><groupId>javassist</groupId><artifactId>javassist</artifactId></exclusion><exclusion> <!-- we prefer our explicit version, though it should be the same --><groupId>asm</groupId><artifactId>asm</artifactId></exclusion><exclusion> <!-- we prefer our explicit version, though it should be the same --><groupId>asm</groupId><artifactId>asm-commons</artifactId></exclusion><exclusion> <!-- we prefer our explicit version, though it should be the same --><groupId>org.ow2.asm</groupId><artifactId>asm</artifactId></exclusion><exclusion> <!-- we prefer our explicit version, though it should be the same --><groupId>org.ow2.asm</groupId><artifactId>asm-commons</artifactId></exclusion></exclusions></dependency><!-- http://mvnrepository.com/artifact/org.apache.struts/struts2-spring-plugin --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-spring-plugin</artifactId><version>${struts.version}</version></dependency><!-- http://mvnrepository.com/artifact/org.apache.struts/struts2-convention-plugin --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-convention-plugin</artifactId><version>${struts.version}</version></dependency><!-- 添加Hibernate依赖 --><!-- http://mvnrepository.com/artifact/org.hibernate/hibernate-core --><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-core</artifactId><version>${spring-hibernate.version}</version><exclusions><exclusion><groupId>org.javassist</groupId><artifactId>javassist</artifactId></exclusion></exclusions> </dependency><!-- http://mvnrepository.com/artifact/org.hibernate.javax.persistence/hibernate-jpa-2.0-api --><!-- -<dependency><groupId>org.hibernate.javax.persistence</groupId><artifactId>hibernate-jpa-2.0-api</artifactId><version>1.0.1.Final</version></dependency>--><!-- http://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager --><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-entitymanager</artifactId><version>4.3.11.Final</version><!-- <exclusions><exclusion><groupId>org.javassist</groupId><artifactId>javassist</artifactId></exclusion></exclusions>--> </dependency><!-- http://mvnrepository.com/artifact/org.postgresql/postgresql --><dependency><groupId>org.postgresql</groupId><artifactId>postgresql</artifactId><version>9.4.1208</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version></dependency><!-- http://mvnrepository.com/artifact/com.cloudhopper.proxool/proxool --><dependency><groupId>com.cloudhopper.proxool</groupId><artifactId>proxool</artifactId><version>0.9.1</version></dependency><!-- http://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore --><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpcore</artifactId><version>4.3.2</version></dependency><!-- http://mvnrepository.com/artifact/org.apache.httpcomponents/httpmime --><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpmime</artifactId><version>4.3.2</version></dependency><!-- http://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.6.3</version></dependency><!-- http://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>2.6.3</version></dependency><!-- http://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-annotations</artifactId><version>2.6.3</version></dependency><!-- http://mvnrepository.com/artifact/log4j/log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><!-- http://mvnrepository.com/artifact/javax.mail/mail --><dependency><groupId>javax.mail</groupId><artifactId>mail</artifactId><version>1.4.7</version></dependency><!-- http://mvnrepository.com/artifact/commons-logging/commons-logging --><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.1.1</version></dependency><!-- http://mvnrepository.com/artifact/com.belerweb/pinyin4j --><dependency><groupId>com.belerweb</groupId><artifactId>pinyin4j</artifactId><version>2.5.0</version></dependency><!-- http://mvnrepository.com/artifact/com.google.zxing/core --><dependency><groupId>com.google.zxing</groupId><artifactId>core</artifactId><version>3.2.0</version></dependency><!-- http://mvnrepository.com/artifact/org.apache.commons/commons-lang3 --><dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>3.0</version></dependency><!-- http://mvnrepository.com/artifact/commons-beanutils/commons-beanutils --><dependency><groupId>commons-beanutils</groupId><artifactId>commons-beanutils</artifactId><version>1.9.2</version></dependency><!-- http://mvnrepository.com/artifact/cglib/cglib -->
<dependency><groupId>cglib</groupId><artifactId>cglib</artifactId><version>3.1</version>
</dependency></dependencies><build><finalName>gpchat</finalName><sourceDirectory>src/main/java</sourceDirectory> <testSourceDirectory>src/test/java</testSourceDirectory> <resources> <resource> <directory>src/main/resources</directory> </resource> </resources> <testResources> <testResource> <directory>src/test/resources</directory> </testResource> </testResources> <outputDirectory>src/main/webapp/WEB-INF/classes</outputDirectory> <testOutputDirectory>src/main/webapp/WEB-INF/classes</testOutputDirectory> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId> <version>3.2</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>2.5</version> <executions> <execution> <phase>compile</phase> </execution> </executions> </plugin> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>2.4.1</version> <configuration> <filesets> <fileset> <directory>src/main/webapp/WEB-INF/lib</directory> <followSymlinks>false</followSymlinks> </fileset> </filesets> </configuration> </plugin> </plugins> </build>
</project>
另外，需要注意的是如果tomcat启动加载spring失败，提示spring组件类找不到，但如果复制这个类在ide里面随便打开个java文件用其定义变量又可以解析成功，这时候通常是maven的依赖库没有分发到tomcat的调试目录 ，而且是用着用着就丢失的，真不知道做错了什么动作，解决办法是右键打开project的properties,找到 deployment assembly，将maven依赖分发出去，如下图：
maven install后，请打开target\xxx\WEB-INF\lib，仔细检查是否有同一个jar是否有不同版本存在，如果有，则说明pom里面有重复配置，需要删除，按照上面的pom.xml运行，我的jar file list 如下：
2016/06/01 09:21 62,983 activation-1.1.jar
2015/09/11 10:56 445,288 antlr-2.7.7.jar
2015/09/11 10:56 4,467 aopalliance-1.0.jar
2016/06/16 11:59 47,895 asm-4.2.jar
2015/12/25 16:37 116,927 aspectjrt-1.8.7.jar
2016/06/14 11:53 1,864,922 aspectjweaver-1.8.9.jar
2016/01/18 17:35 32,112 avalon-framework-api-4.3.jar
2016/01/18 17:35 83,582 avalon-logkit-2.1.jar
2016/06/16 11:59 283,080 cglib-3.1.jar
2016/06/15 12:17 233,859 commons-beanutils-1.9.2.jar
2016/05/31 17:51 232,771 commons-codec-1.6.jar
2015/09/11 10:56 575,389 commons-collections-3.2.1.jar
2016/01/19 09:17 69,002 commons-fileupload-1.3.1.jar
2016/01/19 09:17 173,587 commons-io-2.2.jar
2016/06/15 12:14 306,008 commons-lang3-3.0.jar
2015/09/12 10:49 60,686 commons-logging-1.1.1.jar
2016/06/01 09:21 544,173 core-3.2.0.jar
2016/05/31 17:14 313,898 dom4j-1.6.1.jar
2016/05/31 17:42 1,300,487 freemarker-2.3.22.jar
2016/01/18 17:35 96,369 geronimo-spec-javamail-1.3.1-rc3.jar
2016/01/18 17:35 30,838 geronimo-spec-jms-1.1-rc4.jar
2016/06/14 10:46 75,311 hibernate-commons-annotations-4.0.4.Final.jar
2016/06/14 10:46 5,230,007 hibernate-core-4.3.5.Final.jar
2016/06/14 10:22 648,087 hibernate-entitymanager-4.3.11.Final.jar
2016/06/13 17:01 113,371 hibernate-jpa-2.1-api-1.0.0.Final.jar
2016/05/31 17:50 587,762 httpclient-4.3.2.jar
2016/05/31 17:49 282,269 httpcore-4.3.2.jar
2016/05/31 17:49 37,148 httpmime-4.3.2.jar
2016/05/31 17:53 46,989 jackson-annotations-2.6.3.jar
2016/05/31 17:53 258,875 jackson-core-2.6.3.jar
2016/05/31 17:52 1,170,801 jackson-databind-2.6.3.jar
2016/06/14 10:47 76,551 jandex-1.1.0.Final.jar
2016/06/14 10:47 714,194 javassist-3.18.1-GA.jar
2016/06/14 10:46 57,183 jboss-logging-3.1.3.GA.jar
2016/06/14 10:22 11,558 jboss-logging-annotations-1.2.0.Beta1.jar
2016/06/14 10:22 27,717 jboss-transaction-api_1.2_spec-1.0.0.Final.jar
2015/12/22 12:09 414,240 jstl-1.2.jar
2016/06/01 09:20 489,884 log4j-1.2.17.jar
2016/06/01 09:21 521,157 mail-1.4.7.jar
2016/05/31 17:33 230,352 ognl-3.0.14.jar
2016/06/01 09:21 209,862 pinyin4j-2.5.0.jar
2016/05/31 17:43 648,601 postgresql-9.4.1208.jar
2016/01/18 17:35 200,759 proxool-0.9.1.jar
2016/01/18 15:35 334,469 proxool-cglib-0.9.1.jar
2016/01/18 17:35 77,977 servlet-api-2.3.jar
2016/06/14 10:20 363,974 spring-aop-4.2.0.RELEASE.jar
2016/06/14 10:20 729,550 spring-beans-4.2.0.RELEASE.jar
2016/06/14 10:21 1,084,471 spring-context-4.2.0.RELEASE.jar
2016/06/14 10:19 1,052,383 spring-core-4.2.0.RELEASE.jar
2016/06/14 10:21 262,391 spring-expression-4.2.0.RELEASE.jar
2016/06/14 10:22 421,645 spring-jdbc-4.2.0.RELEASE.jar
2016/06/14 10:52 465,589 spring-orm-4.2.0.RELEASE.jar
2016/06/14 10:22 262,961 spring-tx-4.2.0.RELEASE.jar
2016/06/14 10:19 765,877 spring-web-4.2.0.RELEASE.jar
2016/06/14 10:21 865,404 spring-webmvc-4.2.0.RELEASE.jar
2016/05/31 17:33 67,524 struts2-convention-plugin-2.3.28.1.jar
2016/05/31 17:31 874,267 struts2-core-2.3.28.1.jar
2016/05/31 17:33 21,696 struts2-spring-plugin-2.3.28.1.jar
2016/05/31 17:15 109,318 xml-apis-1.0.b2.jar
2016/05/31 17:33 677,347 xwork-core-2.3.28.1.jar
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