Question

我正在为我的公司开发一组REST Web服务。我们正在努力解决我们想要使用的技术。当我使用Jackson JSON提供程序时，我有一个与JAX-RS Jersey 2.6一起使用的模板Web服务，但是当我使用Moxy提供程序时似乎没有正确编组@QueryParam。

搜索可能包含多种“类型”，例如type = keyword＆amp; type = product_number＆amp; type = fubar 它们映射到包含所有“类型”QueryParam的List类型。当我使用Jackson构建项目时，类型的值被正确地收集到List中，当我使用MOXy时，List为null。 MOXy确实映射了BeanParam中的所有其他Query和Path Params。

问题似乎在于JERSEY是怎样的当我使用杰克逊时，服务很有效：

http://XXX:8080/SearchTermJersey/search/1/as/wat?type=product_number&type=keyword&count=4&lang=en_US

这是它返回的JSON：

{"autoSuggestions":{"product_number":{"<span>wat</span>21000":34},"keyword":{"<span>wat</span>er":100,"<span>wat</span>er solution":50,"<span>wat</span>er purity":100}},"language":"en_US","requestDate":1393623225135,"responseDate":1393623225135,"term":"wat","version":"1"}

Moxy版本服务的URL返回：

{"language":"en_US","requestDate":1393622174166,"responseDate":1393622174166,"term":"wat","version":"1"}

MOXy和Jackson版本之间的Java代码是相同的这是BeanParam：

public class AutoSuggestParam {
@PathParam("version")
private String version;

@PathParam("term")
private String term;

private List<String>types;

private Integer count;

String language;

public AutoSuggestParam(@QueryParam("count")int count, @QueryParam("type")List<String>types, @QueryParam("lang")String language) {
    this.types = types;
    this.count = count;
    this.language = language;
}
public String getVersion() {
    return version;
}

public void setVersion(String version) {
    this.version = version;
}

public String getTerm() {
    return term;
}

public void setTerm(String term) {
    this.term = term;
}


public Integer getCount() {
    return count;
}


public String getLanguage() {
    return language;
}

public List<String>getTypes() {
    return types != null ? types : new ArrayList<String>();
}

问题似乎在于如何处理types参数。使用Jackson，QueryParams类型被正确编组到List中，但MOXy失败并返回null。所以getTypes返回一个空列表。简单的QueryParam计数和lang处理正确。这是泽西岛的一个错误，还是我需要用MOXy做其他事情？

这是我的资源类：

@javax.ws.rs.Path("/search/{version}/as/{term}")
public class AutoSuggestResource {
@GET
@Produces(MediaType.APPLICATION_JSON)
public AutoSuggestResponse getAutoSuggest(@BeanParam AutoSuggestParam autoSuggestParam) {
    System.out.printf("Request: term=%s version=%s lang=%s type=%s count=%d%n", 
            autoSuggestParam.getTerm(),autoSuggestParam.getVersion(), autoSuggestParam.getLanguage(), autoSuggestParam.getTypes().get(0), autoSuggestParam.getCount());
    return search(autoSuggestParam);
}



private AutoSuggestResponse search(AutoSuggestParam autoSuggestParam) {
    AutoSuggestResponse autoSuggestResponse = new AutoSuggestResponse();
    autoSuggestResponse.setRequestDate(new Date().getTime());
    autoSuggestResponse.setVersion(autoSuggestParam.getVersion());
    autoSuggestResponse.setTerm(autoSuggestParam.getTerm());
    autoSuggestResponse.setLanguage(autoSuggestParam.getLanguage());
    int cnt = 0;
    for (String type : autoSuggestParam.getTypes()) {
        if ("product_number".equals(type)) {
            Map<String, Object> values = autoSuggestResponse.getAutoSuggestions().get(type);
            if (values == null) {
                values = new LinkedHashMap<String, Object>();
                autoSuggestResponse.getAutoSuggestions().put(type, values);
            }
            String key = String.format("<span>%s</span>21000", autoSuggestParam.getTerm());
            values.put(key, 34);
            cnt++;
        }
        else if ("keyword".equals(type)) {
            Map<String, Object> values = autoSuggestResponse.getAutoSuggestions().get(type);
            if (values == null) {
                values = new LinkedHashMap<String, Object>();
                autoSuggestResponse.getAutoSuggestions().put(type, values);
            }
            String key = String.format("<span>%s</span>er", autoSuggestParam.getTerm());
            values.put(key, 100);
            cnt++;
            key = String.format("<span>%s</span>er solution", autoSuggestParam.getTerm());
            values.put(key, 50);
            cnt++;
            key = String.format("<span>%s</span>er purity", autoSuggestParam.getTerm());
            values.put(key, 100);
            cnt++;

        }
        if (cnt >= autoSuggestParam.getCount()) {
            break;
        }
    }
    autoSuggestResponse.setResponseDate(new Date().getTime());
    return autoSuggestResponse;
}

Response类：

public class AutoSuggestResponse {
private Long requestDate;
private Long responseDate;
private String version;
private String term;
private String language;

private Map<String, Map<String,Object>>autoSuggestions = new LinkedHashMap<String, Map<String,Object>>();

public Long getRequestDate() {
    return requestDate;
}
public void setRequestDate(Long requestDate ) {
    this.requestDate = requestDate;
}
public Long getResponseDate() {
    return responseDate;
}
public void setResponseDate(Long responseDate) {
    this.responseDate = responseDate;
}
public String getVersion() {
    return version;
}
public void setVersion(String version) {
    this.version = version;
}
public String getTerm() {
    return term;
}
public void setLanguage(String language) {
    this.language = language;
}
public String getLanguage() {
    return language;
}
public void setTerm(String term) {
    this.term = term;
}
public Map<String, Map<String,Object>>getAutoSuggestions() {
    return autoSuggestions;
}

}

web.xml

      <display-name>MoxyAS</display-name>
<servlet>
<servlet-name>MoxyAutoSuggest</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.sial.search.ws</param-value>
</init-param>
<load-on-startup>1</load-on-startup>

  <servlet-mapping>
<servlet-name>MoxyAutoSuggest</servlet-name>
<url-pattern>/*</url-pattern>
 </servlet-mapping>
</web-app>

Answer 1

默认情况下，EclipseLink JAXB (MOXy)不会封送只有getter的属性。您可以添加@XmlElement注释以使其成为映射：

@XmlElement
public Map<String, Map<String,Object>>getAutoSuggestions() {
    return autoSuggestions;
}

默认情况下，MOXy不使用映射键作为JSON键。以下是解释如何设置的示例的链接：

http://blog.bdoughan.com/2013/06/moxys-xmlvariablenode-using-maps-key-as.html

Answer 2

我弄明白了这个问题。它与MOXy无关，将genson-0.98.jar添加到路径修复了QueryParam没有在BeanParam中编组的问题。

将@XmlElement添加到资源确实使Moxy工作了。如果我将XmlElement添加到Response类中的Map，我现在会收到错误： javax.servlet.ServletException：org.glassfish.jersey.server.ContainerException：java.lang.NoClassDefFoundError：org / eclipse / persistence / internal / libraries / asm / ClassWriter

但这是一个新问题。

@BeanParam在使用MOXY时缺少Jersey 2.6 @QueryParam但在Jackson中没有

2 个答案: