Java JsonXContentGenerator的Elasticsearch 2.0 NoClassDefFoundError

我正在尝试将elasticsearch java客户端api版本从1.4.2更新到2.0.0。我正在使用java 1.8。我使用以下代码：

   XContentBuilder builder = XContentFactory.jsonBuilder()

它以前在1.4.2中工作，但我在2.0.0中遇到了这个例外：

   Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.elasticsearch.common.xcontent.json.JsonXContentGenerator
   at org.elasticsearch.common.xcontent.json.JsonXContent.newXContentGenerator(JsonXContent.java:69) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.json.JsonXContent.createGenerator(JsonXContent.java:74) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.json.JsonXContent.createGenerator(JsonXContent.java:80) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.XContentBuilder.<init>(XContentBuilder.java:112) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.XContentBuilder.<init>(XContentBuilder.java:102) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.XContentBuilder.builder(XContentBuilder.java:80) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.json.JsonXContent.contentBuilder(JsonXContent.java:40) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.XContentFactory.contentBuilder(XContentFactory.java:122) ~[elasticsearch-2.0.0.jar:2.0.0]
   at org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder(XContentFactory.java:49) ~[elasticsearch-2.0.0.jar:2.0.0]

原因：java.lang.NoClassDefFoundError:无法初始化类org.elasticsearch.common.xcontent.json.JsonXContentGenerator
在org.elasticsearch.common.xcontent.json.JsonXContent.newXContentGenerator（JsonXContent.java:69）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.json.JsonXContent.createGenerator（JsonXContent.java:74）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.json.JsonXContent.createGenerator（JsonXContent.java:80）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.XContentBuilder.（XContentBuilder.java:112）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.XContentBuilder.（XContentBuilder.java:102）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.XContentBuilder.builder（XContentBuilder.java:80）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.json.JsonXContent.contentBuilder（JsonXContent.java:40）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.XContentFactory.contentBuilder（XContentFactory.java:122）~[elasticsearch-2.0.0.jar:2.0.0]
在org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder（XContentFactory.java:49）~[elasticsearch-2.0.0.jar:2.0.0]

在pom.xml中：

   <dependency>
       <groupId>org.elasticsearch</groupId>
       <artifactId>elasticsearch</artifactId>
       <version>2.0.0</version>
   </dependency>

org.elasticsearch
弹性搜索
2.0.0

原因是我的依赖项列表中没有com.fasterxml.jackson.core，因此导致

        java.lang.ClassNotFoundException: com.fasterxml.jackson.core.util.DefaultIndenter

我在pom.xml中添加了以下内容：

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.6.3</version>
        </dependency>

com.fasterxml.jackson.core
杰克逊核心
2.6.3

问题解决了