在服务器中检测到未知hk2故障，并且在使用ajax时请求的资源上不存在“access control allow origin”标头

ybzsozfc  于 2021-07-08  发布在  Java
关注(0)|答案(0)|浏览(488)

我使用java创建了普通的get和post方法apd。为了检查，我尝试了postman和java客户机，结果很好。但是当我在一个普通的html页面中使用ajax时，它在console enter image description中显示了下面的错误消息

  1. Access to fetch at 'http://localhost:****/*****/' from origin 'http://127.0.0.1:5500' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
  2. Ajax.html:23 GET 'http://localhost:****/*****/' net::ERR_FAILED
  3. (anonymous) @ Ajax.html:23
  4. Ajax.html:26 error TypeError: Failed to fetch
  5. Ajax.html:23 Fetch failed loading: GET 'http://localhost:****/*****/'.

在tomcat中还显示异常（multiexception）

  1. org.glassfish.jersey.internal.Errors logErrors
  2. WARNING: The following warnings have been detected: WARNING: Unknown HK2 failure detected:
  3. MultiException stack 1 of 2
  4. javax.ws.rs.ProcessingException: Error creating a JAXBContext for wadl processing.
  5. atorg.glassfish.jersey.server.wadl.internal.WadlApplicationContextImpl.<init>(WadlApplicationContextImpl.java:144)
  6. ...............................
  7. MultiException stack 2 of 2
  8. java.lang.IllegalStateException: Unable to perform operation: create on org.glassfish.jersey.server.wadl.internal.WadlApplicationContextImpl
  9. at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:393)
  10. at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:487)
  11. at org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:83)
  12. at org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:71)
  13. at..................
  15. WARNING: Unknown HK2 failure detected:
  16. MultiException stack 1 of 4
  17. javax.ws.rs.ProcessingException: Error creating a JAXBContext for wadl processing.
  18. at org.glassfish.jersey.server.wadl.internal.WadlApplicationContextImpl.<init>(WadlApplicationContextImpl.java:144)
  19. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  20. at......................
  21. Caused by: javax.xml.bind.JAXBException: Implementation of JAXB-API has not been found on module path or classpath.
  22. - with linked exception:
  23. [java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory]
  24. at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:177)
  25. at javax.xml.bind.ContextFinder.find(ContextFinder.java:364)
  26. at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:508)
  27. at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:465)
  28. at.....................
  30. MultiException stack 2 of 4
  31. java.lang.IllegalStateException: Unable to perform operation: create on org.glassfish.jersey.server.wadl.internal.WadlApplicationContextImpl
  32. at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:393)
  33. at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:487)
  34. at org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:83)
  35. at org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:71)
  36. at ...............
  37. MultiException stack 3 of 4
  38. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of org.glassfish.jersey.server.wadl.processor.WadlModelProcessor$OptionsHandler errors were found
  39. at org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:247)
  40. at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:358)
  41. at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:487)
  42. at org.glassfish.jersey.hk2.RequestContext.findOrCreate(RequestContext.java:83)
  43. at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2126)
  44. at.........................
  45. MultiException stack 4 of 4
  46. java.lang.IllegalStateException: Unable to perform operation: resolve on org.glassfish.jersey.server.wadl.processor.WadlModelProcessor$OptionsHandler
  47. at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:387)
  48. at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:487)
  49. at org.glassfish.jersey.hk2.RequestContext.findOrCreate(RequestContext.java:83)
  50. at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2126)
  51. at..............
  53. Aug 21, 2020 3:01:36 PM org.apache.catalina.core.StandardWrapperValve invoke
  54. SEVERE: Servlet.service() for servlet [Jersey Web Application] in context with path [/onlineshop] threw exception [A MultiException has 4 exceptions.  They are:
  55. 1. javax.ws.rs.ProcessingException: Error creating a JAXBContext for wadl processing.
  56. 2. java.lang.IllegalStateException: Unable to perform operation: create on org.glassfish.jersey.server.wadl.internal.WadlApplicationContextImpl
  57. 3. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of org.glassfish.jersey.server.wadl.processor.WadlModelProcessor$OptionsHandler errors were found
  58. 4. java.lang.IllegalStateException: Unable to perform operation: resolve on org.glassfish.jersey.server.wadl.processor.WadlModelProcessor$OptionsHandler
  59. ] with root cause
  60. java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory
  61. at....................

下面的代码是javascript

  1. <script>
  3.         var myHeaders = new Headers();
  4.         myHeaders.append("Authorization", "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbElkIjoidXNlcjFAZWthcnQuY29tIiwicGFzc3dvcmQiOiJwYXNzd29yZCJ9.H_LMXrlp8gNCvXN7IRtLwQiTcSMyRczaSyuDfv8mlho");
  5.         myHeaders.append("Access-Control-Allow-Origin", "http://localhost:****/ ");
  6.         var requestOptions = {
  7.             // mode: 'no-cors',
  8.             method: 'GET',
  9.             headers: myHeaders,
  10.             redirect: 'follow'
  11.         };
  13.         fetch("http://localhost:9090/onlineshop/", requestOptions)
  14.             .then(response => response.text())
  15.             .then(result => console.log(result))
  16.             .catch(error => console.log('error', error));
  17.     </script>

如果我取消对模式的注解（mode:'no cors'），它不会显示错误和异常，但是get fetch不起作用。
你能解释什么是cors和没有cors吗？它的目的是什么？
pom.xml文件

  1. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  2.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>onlineshop-ajith-rest</groupId>
  7.     <artifactId>onlineshop</artifactId>
  8.     <packaging>war</packaging>
  9.     <version>0.0.1-SNAPSHOT</version>
  10.     <name>onlineshop</name>
  12.     <build>
  13.         <finalName>onlineshop</finalName>
  14.         <plugins>
  15.             <plugin>
  16.                 <groupId>org.apache.maven.plugins</groupId>
  17.                 <artifactId>maven-compiler-plugin</artifactId>
  18.                 <version>2.5.1</version>
  19.                 <inherited>true</inherited>
  20.                 <configuration>
  21.                     <source>1.7</source>
  22.                     <target>1.7</target>
  23.                 </configuration>
  24.             </plugin>
  25.         </plugins>
  26.     </build>
  28.     <dependencyManagement>
  29.         <dependencies>
  30.             <dependency>
  31.                 <groupId>org.glassfish.jersey</groupId>
  32.                 <artifactId>jersey-bom</artifactId>
  33.                 <version>${jersey.version}</version>
  34.                 <type>pom</type>
  35.                 <scope>import</scope>
  36.             </dependency>
  37.         </dependencies>
  38.     </dependencyManagement>
  40.      <dependencies>
  41.         <dependency>
  42.             <groupId>org.glassfish.jersey.containers</groupId>
  43.             <artifactId>jersey-container-servlet-core</artifactId>
  44.             <!-- use the following artifactId if you don't need servlet 2.x compatibility -->
  45.             <!-- artifactId>jersey-container-servlet</artifactId -->
  46.         </dependency>
  47.         <dependency>
  48.             <groupId>org.glassfish.jersey.inject</groupId>
  49.             <artifactId>jersey-hk2</artifactId>
  50.             <version>2.26</version>
  51.         </dependency>
  53.          <dependency>
  54.              <groupId>javax.activation</groupId>
  55.              <artifactId>activation</artifactId>
  56.              <version>1.1.1</version>
  57.          </dependency>
  58.         <!-- uncomment this to get JSON support-->
  59.         <dependency>
  60.             <groupId>org.glassfish.jersey.media</groupId>
  61.             <artifactId>jersey-media-json-jackson</artifactId>
  62.             </dependency>
  64.         <!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
  65.         <dependency>
  66.             <groupId>javax.xml.bind</groupId>
  67.             <artifactId>jaxb-api</artifactId>
  68.             <version>2.3.0</version>
  69.         </dependency>
  71.         <dependency> 
  72.            <groupId>com.google.code.gson</groupId> 
  73.            <artifactId>gson</artifactId> 
  74.            <version>2.6.2</version> 
  75.        </dependency>
  77.         <dependency>
  78.             <groupId>org.glassfish.jersey.security</groupId>
  79.             <artifactId>oauth2-client</artifactId>
  80.         </dependency>
  82.         <dependency>
  83.             <groupId>com.auth0</groupId>
  84.             <artifactId>java-jwt</artifactId>
  85.             <version>3.10.3</version>
  86.         </dependency>
  87.         <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
  88.         <dependency>
  89.             <groupId>com.fasterxml.jackson.core</groupId>
  90.             <artifactId>jackson-annotations</artifactId>
  91.             <version>2.11.2</version>
  92.         </dependency>
  94.         <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
  95.         <dependency>
  96.             <groupId>com.fasterxml.jackson.core</groupId>
  97.             <artifactId>jackson-databind</artifactId>
  98.             <version>2.11.0</version>
  99.         </dependency>
  101.     </dependencies>
  102.     <properties>
  103.         <jersey.version>2.26-b03</jersey.version>
  104.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  105.     </properties>
  106. </project>

仅供参考它只显示在浏览器中使用ajax时的错误

JavaMavenjersey

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