我的REST服务出现问题。 问题是我的实体之间存在关系,当这个实体将被编写为JSON时,JBoss无法做到这一点。 以下是代码:
儿童班:
@XmlRootElement
class Child implements Serializable {
private static final long serialVersionUID = -6058827989172575778L;
private String childName;
private Parent parent;
public String getChildName() {
return childName;
}
public void setChildName(String childName) {
this.childName = childName;
}
public Parent getParent() {
return parent;
}
public void setParent(Parent parent) {
this.parent = parent;
}
}
父类:
@XmlRootElement
class Parent implements Serializable {
private static final long serialVersionUID = -8280071521315889541L;
private String parentName;
private List<Child> childs = new ArrayList<Child>();
public String getParentName() {
return parentName;
}
public void setParentName(String parentName) {
this.parentName = parentName;
}
public List<Child> getChilds() {
return childs;
}
public void setChilds(List<Child> childs) {
this.childs = childs;
}
}
REST方法
@GET
@Path("/test")
@Produces("application/json")
public Response test() {
final Parent parent = new Parent();
parent.setParentName("Parent name");
Child child = new Child();
child.setChildName("Child name");
child.setParent(parent);
parent.getChilds().add(child);
ResponseBuilder rb = Response.ok(parent);
return rb.build();
}
JBoss生成了这个破解的JSON:
{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":{"parentName":"Parent name","childs":[{"childName":"Child name","parent":
如何忽略Child上的“parent”字段?有没有办法在不重写我的实体的情况下做到这一点,例如“自定义编写者”或类似的东西?
答案 0 :(得分:1)
好吧,@damo帮我看了正确的事情。 当我使用JBoss时,我看起来JBoss内部使用什么API来使用JAX-RS。
我发现JBoss 7.1.1.Final使用RESTeasy 2.3.2.Final,因此,它在内部使用了jackson-jaxrs版本1.9.2。
通过了解这一点,我导入了我的应用程序提供的那些库并使用了@JsonIgnore
注释,因为@XmlTransient
在提供XML时有效,但如果生成JSON则API会忽略。
如果您使用JBoss 7.1.1.Final并使用maven,只需将其添加到您的依赖项中:
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-jaxrs</artifactId>
<version>1.9.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>2.3.2.Final</version>
<scope>provided</scope>
</dependency>
我的Child课程的结果如下:
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder = { "childName" })
class Child implements Serializable {
private static final long serialVersionUID = -6058827989172575778L;
private String childName;
@XmlTransient
@JsonIgnore
private Parent parent;
public String getChildName() {
return childName;
}
public void setChildName(String childName) {
this.childName = childName;
}
public Parent getParent() {
return parent;
}
public void setParent(Parent parent) {
this.parent = parent;
}
}