无法使用 Worklight 适配器和 wink/jackson restful 发送/解析 JSON

Question

背景：我正在使用 Worklight 适配器来使用 restful 服务。 Apache wink 是我宁静的实现 servlet。我在我的服务中使用了jackson 相关的 jars。

问题：如果我尝试使用form-urlencoded 类型的服务，它运行顺利。但是，当我尝试使用 JSON 时，它会因适配器发送的 JSON 字符串的第一个字符出现解析异常而失败。

相关实现和异常，如下。

使用服务的适配器代码（在 Worklight 服务器中运行）：

var input = {
   method : 'post',
   returnedContentType : 'json',        
   path : loginRequestPath,

   headers : { 'Content-Type': 'application/json' },
   parameters:{“commonname": username, "password" : password }
 };
return WL.Server.invokeHttp(input);

杰克逊注册 (copied straight from IBM)。即使我完全删除了这段代码，也会发生同样的异常。

 public Set<Object> getSingletons() {
        Set<Object> s = new HashSet<Object>();

        // Register the Jackson provider for JSON

        // Make (de)serializer use a subset of JAXB and (afterwards) Jackson annotations
        // See http://wiki.fasterxml.com/JacksonJAXBAnnotations for more information
        ObjectMapper mapper = new ObjectMapper();

        AnnotationIntrospector primary = new JaxbAnnotationIntrospector();//new JacksonAnnotationIntrospector();
        AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
        AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
        mapper.getDeserializationConfig().setAnnotationIntrospector(pair);//setAnnotationIntrospector(pair);
        mapper.getSerializationConfig().setAnnotationIntrospector(pair);

        // Set up the provider
        JacksonJaxbJsonProvider jaxbProvider = new JacksonJaxbJsonProvider();
        jaxbProvider.setMapper(mapper);

        s.add(jaxbProvider);
        return s;
      }

我的构建路径中与杰克逊相关的 JAR 列表：

对于 Apache wink，我使用过：
wink、wink 客户端、wink 通用和 wink 服务器 jar (1.4)。

例外：

 16:39:18,143 INFO  [STDOUT] 16:39:18,142 ERROR [RequestProcessor] An unhandled exception occurred which will be propagated to the container.
org.codehaus.jackson.JsonParseException: Unexpected character ('c' (code 99)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: org.apache.wink.server.internal.log.Requests$LoggedServletInputStream@2ed482c6; line: 1, column: 2]
    at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1433)
    at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:521)
    at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:442)
    at org.codehaus.jackson.impl.Utf8StreamParser._handleUnexpectedValue(Utf8StreamParser.java:2090)
    at org.codehaus.jackson.impl.Utf8StreamParser._nextTokenNotInObject(Utf8StreamParser.java:606)
    at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:492)
    at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2761)
    at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2682)
    at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1308)
    at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:398)
    at org.apache.wink.server.internal.registry.ServerInjectableFactory$EntityParam.getValue(ServerInjectableFactory.java:200)
    at org.apache.wink.common.internal.registry.InjectableFactory.instantiate(InjectableFactory.java:68)
    at org.apache.wink.server.internal.handlers.CreateInvocationParametersHandler.handleRequest(CreateInvocationParametersHandler.java:44)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleResourceMethod(FindResourceMethodHandler.java:151)
    at org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleRequest(FindResourceMethodHandler.java:65)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.handlers.FindRootResourceHandler.handleRequest(FindRootResourceHandler.java:95)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.handlers.HeadMethodHandler.handleRequest(HeadMethodHandler.java:53)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.handlers.OptionsMethodHandler.handleRequest(OptionsMethodHandler.java:46)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.handlers.SearchResultHandler.handleRequest(SearchResultHandler.java:33)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.log.ResourceInvocation.handleRequest(ResourceInvocation.java:92)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.internal.log.Requests.handleRequest(Requests.java:76)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
    at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
    at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
    at org.apache.wink.server.handlers.AbstractHandlersChain.run(AbstractHandlersChain.java:48)
    at org.apache.wink.server.internal.RequestProcessor.handleRequestWithoutFaultBarrier(RequestProcessor.java:207)
    at org.apache.wink.server.internal.RequestProcessor.handleRequest(RequestProcessor.java:154)
    at org.apache.wink.server.internal.servlet.RestServlet.service(RestServlet.java:119)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Unknown Source)

需要考虑的事项：

在适配器代码中，在参数 parameters:{“commonname": username, "password" : password } 中，第一个字符总是失败。这次是 c ，因此它以 c 失败（代码 99 对应于 ASCII 的 c 值）。

如果是：parameters:{“username": username, "password" : password }，它将失败并显示u，并且相应的代码更改为它的ASCII 值，即 117。

我也试过用单引号代替双引号，没有引号和转义引号。每次在第一个字符上失败。
我还尝试显式创建 JSON 并将其作为参数传递，例如：

 var credentials = JSON.stringify({'username': username, 'password': password});

 parameters: {"credentials":credentials} //still fails in first char
 //also as parameters: {credentials} :
 //this fails in adapter itself for wrong type of parameter

我的想法是：
由于解析失败，我认为要么我尝试从适配器发送 JSON 的方式不是正确的方式，要么我没有正确注册 Jackson，因此它无法正确解析 JSON。但是我完全迷失了在哪里寻找这个问题。

非常感谢大家花时间阅读这个冗长的问题和任何有用的意见。

Answer 1

您的JSON 无效。考虑一下：

{
    "commonname": "username",
    "password": "password"
}

" 标记是真的需要。