Jersey错误从JSON字符串反序列化ArrayList(Jersey error deserializing ArrayList from JSON string)

 这是重要的信息。 使用Jersey 1.6。 序列化同一类型的列表到前端没有问题，并且不同类型的列表不会导致应用程序中其他地方来回出现问题，所以我认为问题在于bean本身。 我已经尝试了这个没有额外的路径参数，我遵循所有的bean约定，数据在ajax之前看起来很好......真的不知道我的问题在哪里。 除了它是NPE之外，没有其他信息。 
 
 豆 
 
public class TheBean implements Serializable{

private static final long serialVersionUID = 1L;
private String beanId;
private String name;
private String beanType;
private Boolean group;

public TheBean(){}

public TheBean(String beanId, String name, String beanType, boolean isGroup) {
    super();
    this.beanId = beanId;
    this.name = name;
    this.beanType = beanType;
    this.group = isGroup;
}


public String getBeanId() {
    return beanId;
}
public void setBeanId(String beanId) {
    this.beanId = beanId;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getBeanType() {
    return beanType;
}
public void setBeanType(String beanType) {
    this.beanType = beanType;
}
public boolean isGroup() {
    return group;
}
public void setGroup(boolean group) {
    this.group = group;
}
}
 
 网络服务 
 
@POST
@Path("/update/{parentId}")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response updateTheBeanList(ArrayList<TheBean> routeList, @PathParam("parentId") String parentId){
    //code
}
 
 客户端代码 
 
var beanListArray = beanListTable.fnGetData();//looks good here
var json = JSON.stringify(beanListArray);//and here

$.ajax({
    dataType: 'text',
    type: "POST",
    data: json,
    url: '${pageContext.request.contextPath}/rest/beanList/update/' + parentId, //looks good here
});
 
 例外 
 
java.lang.NullPointerException
at org.codehaus.jackson.xc.JaxbAnnotationIntrospector.findAdapter(JaxbAnnotationIntrospector.java:1058)
at org.codehaus.jackson.xc.JaxbAnnotationIntrospector.findDeserializer(JaxbAnnotationIntrospector.java:644)
at org.codehaus.jackson.xc.JaxbAnnotationIntrospector.findDeserializer(JaxbAnnotationIntrospector.java:74)
at org.codehaus.jackson.map.AnnotationIntrospector.findDeserializer(AnnotationIntrospector.java:634)
at org.codehaus.jackson.map.AnnotationIntrospector$Pair.findDeserializer(AnnotationIntrospector.java:1286)
 
 有问题的依赖项 
 
<dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-bundle</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey.contribs</groupId>
        <artifactId>jersey-multipart</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.8.0</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-json</artifactId>
        <version>1.6</version>
    </dependency>

Here is the important information. Using Jersey 1.6. There is no issue serializing this same type of list going to the front end, and lists of different types aren't causing problems elsewhere in the application going back and forth, so I think the problem is with the bean itself. I've tried this without the additional path param, I'm following all of the bean conventions, the data looks fine before ajax... really have no clue where my problem is. No information is really given other than it's an NPE. 
 
Bean
 
public class TheBean implements Serializable{

private static final long serialVersionUID = 1L;
private String beanId;
private String name;
private String beanType;
private Boolean group;

public TheBean(){}

public TheBean(String beanId, String name, String beanType, boolean isGroup) {
    super();
    this.beanId = beanId;
    this.name = name;
    this.beanType = beanType;
    this.group = isGroup;
}


public String getBeanId() {
    return beanId;
}
public void setBeanId(String beanId) {
    this.beanId = beanId;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getBeanType() {
    return beanType;
}
public void setBeanType(String beanType) {
    this.beanType = beanType;
}
public boolean isGroup() {
    return group;
}
public void setGroup(boolean group) {
    this.group = group;
}
}
 
The web service
 
@POST
@Path("/update/{parentId}")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response updateTheBeanList(ArrayList<TheBean> routeList, @PathParam("parentId") String parentId){
    //code
}
 
The client side code
 
var beanListArray = beanListTable.fnGetData();//looks good here
var json = JSON.stringify(beanListArray);//and here

$.ajax({
    dataType: 'text',
    type: "POST",
    data: json,
    url: '${pageContext.request.contextPath}/rest/beanList/update/' + parentId, //looks good here
});
 
Exception
 
java.lang.NullPointerException
at org.codehaus.jackson.xc.JaxbAnnotationIntrospector.findAdapter(JaxbAnnotationIntrospector.java:1058)
at org.codehaus.jackson.xc.JaxbAnnotationIntrospector.findDeserializer(JaxbAnnotationIntrospector.java:644)
at org.codehaus.jackson.xc.JaxbAnnotationIntrospector.findDeserializer(JaxbAnnotationIntrospector.java:74)
at org.codehaus.jackson.map.AnnotationIntrospector.findDeserializer(AnnotationIntrospector.java:634)
at org.codehaus.jackson.map.AnnotationIntrospector$Pair.findDeserializer(AnnotationIntrospector.java:1286)
 
The dependencies in question
 
<dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-bundle</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey.contribs</groupId>
        <artifactId>jersey-multipart</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.8.0</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-json</artifactId>
        <version>1.6</version>
    </dependency>

原文：https://stackoverflow.com/questions/36294702