0

我正在将我的系统从 Jersey 1 迁移到 Jersey 2。在我的代码中，我有来自和来自的@Inject注释。我已将这些更改为and 。com.sun.jersey.spi.inject.Inject@Singletoncom.sun.jersey.spi.resource.Singletonjavax.inject.Injectjavax.inject.Singleton

由于此更改，我在注入任何用它注释的对象时遇到错误。我的错误是这个

javax.servlet.ServletException: A MultiException has 4 exceptions.  They are:
1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=APIConnectorHandler,parent=BarcodeSearchClient,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1090224052)
2. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=APIConnectorHandler,parent=RSearchClient,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1247004825)
3. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of com.search.barcode.BarcodeSearchClient errors were found
4. java.lang.IllegalStateException: Unable to perform operation: resolve on com.search.barcode.BarcodeSearchClient

    org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:423)
    org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:386)
    org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:334)
    org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    com.filter.MetricsEmittingFilter.doFilter(MetricsEmittingFilter.java:89)

被APIConnectorHandler注入RSearchClient和BarcodeSearchClient。我首先调用了在流程中击中 RSearchClient 的端点，然后调用了 BarcodeSearchClient，因为 RSearchClient 也显示为异常 #2。

我的 web.xml 看起来像这样

<?xml version="1.0"?>
<!--
When modifying this file, DO NOT FORGET to also modify workspace-web.xml
if necessary so that "brazil-build server" will work.
-->
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">

    <context-param>
        <description>Spring Expression Language Support</description>
        <param-name>springJspExpressionSupport</param-name>
        <param-value>false</param-value>
    </context-param>
    <listener>
        <listener-class>com.abc.listener.ContextListener</listener-class>
    </listener>


    <servlet>
        <servlet-name>JerseyServlet</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>
                com.search, com.fasterxml.jackson.jaxrs.json
            </param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>JerseyServlet</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

    <filter-mapping>
        <filter-name>MetricsEmittingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

我确实发现了一些 Hk2 无法找到豆子和东西的东西，但我无法理解的是它在 Jersey 1 中是如何工作的。 Jersey 1 是从哪里@Inject得到豆子的？

PS。这是一个超级遗留代码，我真的不知道为什么，但它具有弹簧集成，但没有一个对象被创建为 bean。它们只是在多个地方用 new 初始化。Spring 仅用于初始化特定于区域的 bean。

4

1 回答 1

0

得到它的工作。我必须创建一个活页夹类和应用程序类并将其链接到 web.xml。binder 类需要绑定我通过 @Inject 注入的所有类及其依赖项。

关注https://www.appsdeveloperblog.com/dependency-injection-hk2-jersey-jax-rs/

于 2021-11-30T11:00:30.830 回答