用@autowired弹簧注射不起作用

Question

我正在使用Jersey和Spring构建一个示例应用程序。

一切正常，我可以调用找到的控制器，但是当我尝试访问服务时，这是空的。但是它是用弹簧自动连接的，所以这不应该是空的。

这是我的 RESTController

@Path("/RESTExample")
@Component
@Scope("request")
@Produces({ MediaType.APPLICATION_JSON })
@Consumes({ MediaType.APPLICATION_JSON })
public class RESTResources {
@Autowired
protected RESTServices restServices;
@GET
@Path("/resource/{id}")
public Response getResourceWithID(@PathParam("id") Integer resourceID) {
return EOMUtils.BuildSuccessResponse(restServices.getData(resourceID));
}
}

这是我的休息服务类

@Service
public class RESTServicesImpl implements RESTServices {
@Autowired
protected RESTDao restDao;
@Override
public String getData(Integer resourceId) {
return restDao.getData(resourceId);
}
@Override
public String getData() {
return restDao.getData();
}

这是我的应用程序上下文 XML 配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/jee  http://www.springframework.org/schema/jee/spring-jee-3.2.xsd">

<!-- load the properties  -->
<context:property-placeholder location="classpath:properties/app.properties" />
<!--  load all the beans declared with @Component and child annotation into the Spring's IOC Container  -->
<context:annotation-config />
<context:component-scan base-package="com.ep.eom.poc.*" />
<!-- Load the Log4j bean into the IOC Container --> 
<bean id="eom_log_factory"
class="org.springframework.beans.factory.config.CommonsLogFactoryBean">
<property name="logName" value="eom_log_factory"/>
</bean>
<bean id="log4jInitialization"
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass" value="org.springframework.util.Log4jConfigurer" />
<property name="targetMethod" value="initLogging" />
<property name="arguments">
<list>
<value>classpath:/log4j/config/log4j_${envTarget}.xml</value>
</list>
</property>
</bean>   

</beans>

这是我的大师

<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>com.capgemini.poc</groupId>
<artifactId>EOM</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>EOM_POC</name>
<!-- main properties for the project -->
<properties>
<org.springframework-version>4.0.6.RELEASE</org.springframework-version>
<org.slf4j-version>1.6.6</org.slf4j-version>
<jersey-version>2.11</jersey-version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<!-- Support for profiles -->
<profiles>
<profile>
<id>dev</id>
<build>
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<id>default-clean</id>
<phase>initialize</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<phase>test</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<!-- config.properties -->
<copy todir="${project.build.outputDirectory}">
<fileset dir="src/main/resources/" includes="**" />
</copy>
<delete file="${project.build.outputDirectory}/log4j/config/log4j_TEST.xml" />
<delete file="${project.build.outputDirectory}/log4j/config/log4j_PRODUCTION.xml" />
<delete file="${project.build.outputDirectory}/log4j/config/log4j_STAGING.xml" />
<delete file="${project.build.outputDirectory}/properties/app_PROD.properties" />
<delete file="${project.build.outputDirectory}/properties/app_STAG.properties" />
<delete file="${project.build.outputDirectory}/properties/app_TEST.properties" />
<delete file="${project.build.outputDirectory}/properties/app_DEV.properties" />
<copy file="src/main/resources/properties/app_DEV.properties" tofile="${project.build.outputDirectory}/properties/app.properties" />
</tasks>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>

<!-- Repository for fetching the libraries -->
<repositories>
<repository>
<id>maven2-repository.java.net</id>
<name>Java.net Repository for Maven</name>
<url>http://download.java.net/maven/2/</url>
</repository>
</repositories>

<build>
<finalName>${artifactId}-${version}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<inherited>true</inherited>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
<executions>
<execution>
<id>default-testCompile</id>
<phase>test-compile</phase>
<goals>
<goal>testCompile</goal>
</goals>
<configuration>
<skip>true</skip>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.8</version>
<configuration>
<wtpversion>1.5</wtpversion>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
</manifest>
<archive>
<manifestEntries>
<Specification-Title>${project.name}</Specification-Title>
<Specification-Version>${project.artifactId}</Specification-Version>
<Implementation-Version>-${project.version}</Implementation-Version>
</manifestEntries>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!-- Spring Core FrameWork -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework-version}</version>
</dependency>

<!-- SLF4J -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>

<!-- Jersey  -->
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
<version>${jersey-version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>${jersey-version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-multipart</artifactId>
<version>${jersey-version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.ext</groupId>
<artifactId>jersey-entity-filtering</artifactId>
<version>${jersey-version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<!-- if your container implements Servlet API older than 3.0, use "jersey-container-servlet-core"  -->
<artifactId>jersey-container-servlet</artifactId>
<version>${jersey-version}</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0</version>
</dependency>
</dependencies>
</project>

我可以输入 RESTResource 类，但 RESTServices 类是 NULL。

我错在哪里？

Answer 1

我没有永远做春天，但我相信你的问题是你没有从 IoC 容器加载你的RESTResources类。

您需要在应用程序上下文中定义RESTResources，并从应用程序上下文加载它。

我看到你context:component-scancom.ep.eom.poc.*.RestResources是否在com.ep.eom.poc套餐下？

如果您只是想获取"原始"类，它不会将依赖项注入其中。