Question

我使用spring-data-solr将spring-data-jpa与solr集成，但是当我使用SolrOperations来保存bundle（org.domain.Article）时，会抛出异常：

org.springframework.data.solr.UncategorizedSolrException：无法从类型org.kb.domain.Article转换为类型org.apache.solr.common.SolrInputDocument的值'Article [id = 1，title = test-1 ，description = test-1，content = test-1，author = test-1，link = test-1，attachment = test-1，date = Sat Jan 05 20:06:12 CST 2013，category = org.kb。 domain.Category@67e6cf07]';嵌套异常是org.apache.solr.client.solrj.beans.BindingException：无效的setter方法。必须有一个且只有一个参数;嵌套异常是org.springframework.core.convert.ConversionFailedException：无法从类型org.kb.domain.Article转换为类型org.apache.solr.common.SolrInputDocument为值'Article [id = 1，title = test-1 ，description = test-1，content = test-1，author = test-1，link = test-1，attachment = test-1，date = Sat Jan 05 20:06:12 CST 2013，category = org.kb。 domain.Category@67e6cf07]';嵌套异常是org.apache.solr.client.solrj.beans.BindingException：无效的setter方法。必须有一个且只有一个参数

这是我的豆子：

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import org.apache.solr.client.solrj.beans.Field;
import com.fasterxml.jackson.annotation.JsonFormat;
@Entity
@Table(name="article")
public class Article extends IdEntity{

private static final long serialVersionUID = -5170398606065544445L;

private String title;

private String description;

private String content;

private String author;

private String link;

private String attachment;

private Date date;

private Category category;

public Article() {
    super();
}

@ManyToOne
@JoinColumn(name="category_id")
public Category getCategory() {
    return category;
}
public void setCategory(Category category) {
    this.category = category;
}

@Column(name="title")
@Field("title")
public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

@Column(name="description")
@Field("description")
public String getDescription() {
    return description;
}
public void setDescription(String description) {
    this.description = description;
}

@Column(name="content")
@Field("content")
public String getContent() {
    return content;
}
public void setContent(String content) {
    this.content = content;
}

@Column(name="author")
@Field("author")
public String getAuthor() {
    return author;
}
public void setAuthor(String author) {
    this.author = author;
}

@Column(name="link")
@Field("link")
public String getLink() {
    return link;
}
public void setLink(String link) {
    this.link = link;
}

@Column(name="attachment")
@Field("attachment")
public String getAttachment() {
    return attachment;
}

public void setAttachment(String attachment) {
    this.attachment = attachment;
}

@Column(name="date")
@JsonFormat(pattern="yyyy-MM-dd", timezone="GMT+08:00")
public Date getDate() {
    return date;
}
public void setDate(Date date) {
    this.date = date;
}

@Override
public String toString() {
    return "Article [id=" + id + ",title=" + title + ", description=" +     description
            + ", content=" + content + ", author=" + author + ", link="
            + link + ", attachment=" + attachment + ", date=" + date
            + ", category=" + category + "]";
}

}

import java.io.Serializable;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import org.apache.solr.client.solrj.beans.Field;

@MappedSuperclass
public abstract class IdEntity implements Serializable{

/**
 * 
 */
private static final long serialVersionUID = -5676694680777491651L;
protected Long id;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Field("id")
public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}
}

Answer 1

问题出在你的solrj Field注释中。看看documentation：

@Field注释可以应用于字段或setter方法。

您应该将Field注释移动到setId setter方法或id字段本身。您甚至可以删除id限定符，因为字段名称已经是id，这就足够了：

@Field
protected Long id;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

org.springframework.data.solr.UncategorizedSolrException：无法转换为类型org.apache.solr.common.SolrInputDocument

1 个答案: