Unable to locate Spring NamespaceHandler for XML schema namespace tp://www.springframework.org/schem

背景:
创建的ssm项目，在eclipse中通过main函数运行正常，如下, 即可以正常加载spring上下文。

/**     * 加载spring配置文件和log4j日志文件     * @return boolean     */    public boolean initEnv() {        try {            context = new ClassPathXmlApplicationContext("spring.xml");            logger.info("Init env successfully!");            return true;        } catch (Exception e) {            logger.error("Init env occur exception[{}].", e.getMessage());            return false;        }    }

通过maven打包后，通过java -jar运行，报如下错误:

7-09-11 22:18:02.777 [main] ERROR com.ilucky.alg.data.export.ProductExportManual - Init env occur exception[Configuration problem: Unable to locate Spring NamespaceHandler for XML schema namespacetp://www.springframework.org/schema/context]

解决方案如下, 在pom文件中加入如下配置:

         <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">                                <resource>META-INF/spring.handlers</resource>                                </transformer>                                <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">                                    <resource>META-INF/spring.schemas</resource>                                </transformer>

完整的标签如下:

<build>        <finalName>${project.artifactId}</finalName>        <plugins>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-compiler-plugin</artifactId>                <version>3.1</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                    <encoding>UTF-8</encoding>                </configuration>            </plugin>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-shade-plugin</artifactId>                <version>2.3</version>                <configuration>                    <createDependencyReducedPom>true</createDependencyReducedPom>                    <filters>                        <filter>                            <artifact>*:*</artifact>                            <excludes>                                <exclude>META-INF/*.SF</exclude>                                <exclude>META-INF/*.DSA</exclude>                                <exclude>META-INF/*.RSA</exclude>                            </excludes>                        </filter>                    </filters>                    <encoding>UTF-8</encoding>                </configuration>                <executions>                    <execution>                        <phase>package</phase>                        <goals>                            <goal>shade</goal>                        </goals>                        <configuration>                            <transformers>                                <transformer                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />                                <transformer                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">                                    <mainClass>com.xxx.MainTest</mainClass>                                </transformer>                                 <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">                                <resource>META-INF/spring.handlers</resource>                                </transformer>                                <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">                                    <resource>META-INF/spring.schemas</resource>                                </transformer>                            </transformers>                        </configuration>                    </execution>                </executions>            </plugin>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-jar-plugin</artifactId>                <version>2.4</version>                <configuration>                    <archive>                        <manifest>                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>                        </manifest>                    </archive>                </configuration>            </plugin>        </plugins>    </build>