无法找到XML架构命名空间的Spring NamespaceHandler [http://www.springframework.org/schema/integration/twitter]

时间：2014-12-29 09:17:00

标签： spring spring-integration

我正在尝试编写一个带有Twitter搜索流的应用程序。我的pom.xml看起来像这样：

<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>  
<groupId>co.edureka</groupId>  
<artifactId>Spring_Integration_Module_Examples</artifactId>  
<version>0.0.1-SNAPSHOT</version>  
<dependencies>  
<dependency>  
    <groupId>org.springframework</groupId>  
    <artifactId>spring-core</artifactId>  
    <version>4.1.1.RELEASE</version>  
</dependency>  
<dependency>  
    <groupId>org.springframework</groupId>  
    <artifactId>spring-context</artifactId>  
    <version>4.1.1.RELEASE</version>  
</dependency>  
<dependency>  
    <groupId>org.springframework</groupId>  
    <artifactId>spring-beans</artifactId>  
    <version>4.1.1.RELEASE</version>  
</dependency>  

  <dependency>  
 <groupId>org.springframework.social</groupId>  
 <artifactId>spring-social-twitter</artifactId>  
 <version>1.0.2.RELEASE</version>  
 </dependency> 

  <dependency>  
    <groupId>org.springframework.integration</groupId>  
    <artifactId>spring-integration-core</artifactId>  
    <version>3.0.0.RELEASE</version>  
  </dependency>  
</dependencies>  
</project>

我还有以下si-components配置代码：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:int="http://www.springframework.org/schema/integration"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:int-stream="http://www.springframework.org/schema/integration/stream"
xmlns:int-twitter="http://www.springframework.org/schema/integration/twitter"
xmlns:int-file="http://www.springframework.org/schema/integration/file"
xmlns:int-mail="http://www.springframework.org/schema/integration/mail"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
http://www.springframework.org/schema/integration/stream http://www.springframework.org/schema/integration/stream/spring-integration-stream.xsd
http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file.xsd
http://www.springframework.org/schema/integration/twitter http://www.springframework.org/schema/integration/twitter/spring-integration-twitter.xsd">

<int-twitter:search-inbound-channel-adapter
    query="#springintegration" channel="inboundTweets">
    <int:poller fixed-rate="5000" max-messages-per-poll="3" />
</int-twitter:search-inbound-channel-adapter>

<int:transformer input-channel="inboundTweets"
    output-channel="tweetsText" expression="payload.getText()" />

<int-file:outbound-channel-adapter channel="tweetsText" 
id="consumer-file-adapter" 
directory="file:C:\\Users\\sagio\\Documents\\workspace-sts-3.6.3.RELEASE\\tweeterStream\\data" />

<bean id="twitterTemplate" class="org.springframework.social.twitter.api.impl.TwitterTemplate">
    <constructor-arg value=.... />
    <constructor-arg value=.... />
    <constructor-arg value=.... />
    <constructor-arg value=.... />
</bean>

<int:channel id="inboundTweets" />
<int:channel id="tweetsText" />
</beans>

当我尝试运行它时，我得到以下异常： 配置问题：无法找到XML架构命名空间的Spring NamespaceHandler [http://www.springframework.org/schema/integration/twitter]

此问题的正确配置是什么？

1 个答案:

答案 0 :(得分：1)

在您的依赖项列表中，您缺少spring-integration-twitter依赖项。 

<dependency>  
    <groupId>org.springframework.integration</groupId>  
    <artifactId>spring-integration-core</artifactId>  
    <version>4.1.1.RELEASE</version>  
</dependency>

我建议升级到最新版本的Spring Integration，因为它比3.x分支更好地使用Spring 4.x功能。 

<?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>
    <groupId>co.edureka</groupId>
    <artifactId>Spring_Integration_Module_Examples</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <spring.version>4.1.3.RELEASE</spring.version>
        <spring-integration.version>4.1.1.RELEASE</spring-integration.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-core</artifactId>
            <version>${spring-integration.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-twitter</artifactId>
            <version>${spring-integration.version}</version>
        </dependency>
    </dependencies>
</project>

添加spring-core依赖项时已包含spring-beans和spring-context依赖项。

或者甚至更好，您可能希望使用Spring IO Platform来对齐所有版本。

<?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>
    <groupId>co.edureka</groupId>
    <artifactId>Spring_Integration_Module_Examples</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-twitter</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.spring.platform</groupId>
                <artifactId>platform-bom</artifactId>
                <version>1.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>
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