Re: CXF 2.7.0 webclient.getCollection()类型转换错误

[kevin liu]

原因找到了，不支持直接返回数组的JSO格式，需要将数组放到对象中就能正常解析了.

On Friday, March 8, 2013 9:43:49 AM UTC+8, kevin liu wrote:

大家好！

   我这边遇到了一个问题困扰了好久，不知道有那位兄弟遇到过，帮忙分析一下原因

   在浏览器中返回JSON数据是这样的:  [{"processCode":"inc-1","status":"一线处理中","title":"PC2001无线网络无法链接"},{"processCode":"inc-2","status":"经理审批中","title":"运维系统无法访问"}]

   客户端代码:

public static void  main(String args[]){

List<JSONProvider> providers=new ArrayList<JSONProvider>();

JSONProvider jsonProvider=new JSONProvider();

jsonProvider.setDropRootElement(true);

jsonProvider.setDropCollectionWrapperElement(true);

jsonProvider.setSerializeAsArray(true);

jsonProvider.setMarshallAsJaxbElement(true);

jsonProvider.setUnmarshallAsJaxbElement(true);

jsonProvider.setSupportUnwrapped(true);

providers.add(jsonProvider);

String endPoint="http://localhost:81/itsm/mobile/v1";

WebClient client = WebClient.create(endPoint,providers);

client.path("ssdservice").path("issuelist").header("accessToken", "hello world!").query("Username", "admin").query("start", 0).query("limit", 10); //设置查询参数

client.type("application/xml").accept("application/json");

client.getCollection(IssueListResult.class);//发送GET请求

}

IssueListResult 类定义:

public class IssueListResult {

/** 工单号 */

private String processCode;

/** 工单标题 */

private String title;//

/** 工单状态 */

private String status;

public String getProcessCode() {

return processCode;

}

public void setProcessCode(String processCode) {

this.processCode = processCode;

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public String getStatus() {

return status;

}

public void setStatus(String status) {

this.status = status;

}

}

异常堆是这样的：

2013-3-8 9:29:37 org.apache.cxf.jaxrs.client.AbstractClient reportMessageHandlerProblem

严重: .Problem with reading the response message, class : interface java.util.Collection, ContentType : application/json;charset=UTF-8.

Exception in thread "main" javax.ws.rs.client.ClientException: .Problem with reading the response message, class : interface java.util.Collection, ContentType : application/json;charset=UTF-8.

at org.apache.cxf.jaxrs.client.AbstractClient.reportMessageHandlerProblem(AbstractClient.java:662)

at org.apache.cxf.jaxrs.client.AbstractClient.readBody(AbstractClient.java:474)

at org.apache.cxf.jaxrs.client.WebClient.handleResponse(WebClient.java:960)

at org.apache.cxf.jaxrs.client.WebClient.doResponse(WebClient.java:944)

at org.apache.cxf.jaxrs.client.WebClient.doChainedInvocation(WebClient.java:894)

at org.apache.cxf.jaxrs.client.WebClient.doInvoke(WebClient.java:761)

at org.apache.cxf.jaxrs.client.WebClient.doInvoke(WebClient.java:748)

at org.apache.cxf.jaxrs.client.WebClient.invokeAndGetCollection(WebClient.java:403)

at org.apache.cxf.jaxrs.client.WebClient.getCollection(WebClient.java:479)

at com.test.main(BaseTestCase.java:244)

Caused by: javax.ws.rs.WebApplicationException: java.lang.ClassCastException: com.test.IssueListResult cannot be cast to org.apache.cxf.jaxrs.provider.AbstractJAXBProvider$CollectionWrapper

at org.apache.cxf.jaxrs.provider.json.JSONProvider.readFrom(JSONProvider.java:249)

at org.apache.cxf.jaxrs.utils.JAXRSUtils.readFromMessageBodyReader(JAXRSUtils.java:1141)

at org.apache.cxf.jaxrs.client.AbstractClient.readBody(AbstractClient.java:470)

... 8 more

Caused by: java.lang.ClassCastException: com.test.IssueListResult cannot be cast to org.apache.cxf.jaxrs.provider.AbstractJAXBProvider$CollectionWrapper

at org.apache.cxf.jaxrs.provider.json.JSONProvider.readFrom(JSONProvider.java:231)